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• web.xml : URL mapping

  - by Devashish Dixit

  I have these two lines in my web.xml <url-pattern>/</url-pattern> : Index Servletand <url-pattern>/login</url-pattern> : Login Servlet but whem I open http://localhost:8084/login/, it goes to Index Servlet and when I open http://localhost:8084/login, it goes to Login Servlet. Is there any difference in http://localhost:8084/login/ and http://localhost:8084/login? My web.xml <servlet> <servlet-name>Index</servlet-name> <servlet-class>Index</servlet-class> </servlet> <servlet> <servlet-name>Login</servlet-name> <servlet-class>Login</servlet-class> </servlet> and <servlet-mapping> <servlet-name>Index</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>Login</servlet-name> <url-pattern>/login</url-pattern> </servlet-mapping>

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• CRM@Oracle Series: Web Marketing Integration

  - by tony.berk

  Who is visiting your website? How did they get there? Was it from a search engine? Email campaign? Are they downloading whitepapers, datasheets, presentations, software? Are they interested in attending one of your marketing events? Are you capturing these leads or which marketing campaign generated the lead? There are a lot of questions related to traffic on a website, and the answers to those questions can be found in your CRM system. Visitors who download marketing collateral are potential leads, so it is important to capture who they are, how they got there, where they went on the website and what they are looking for. Today's CRM@Oracle slidecast discusses how Oracle uses Siebel CRM to plan and execute marketing campaigns on our website, www.oracle.com, and capture the key information about who is downloading content or interested in attending one of our marketing events. The responses are captured, qualified, and if appropriate, a lead is generated. It all happens in Siebel CRM. CRM@Oracle Series: Web Marketing Integration Click here to learn more about Oracle CRM products and here to learn about other customers using Oracle CRM. Are you enjoying the CRM@Oracle Series? If you have a particular CRM area or function which you'd like to hear how Oracle implemented it internally, leave us a comment and we'll try to get it on our list.

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• Java RMI AccessControlException: access denied

  - by Gwilym

  Hey im getting a AccessControlException: access denied when attempting to start up a RMI app im writing, I cant work out why I get this exception if I open it on the default port 1099, or on another dynamic port, my policy file currently grants everything (will change when app is finished). I am stuck as to where It is going wrong, any help would but of great use My code public class Main { /** * @param args the command line arguments */ public static void main(String[] args) throws RemoteException, AlreadyBoundException, MalformedURLException { if (System.getSecurityManager() == null) { System.setSecurityManager ( new RMISecurityManager() ); } CreditCardServer ccs = new CreditCardServer(); int port = 1099; try { port = Integer.valueOf(args[0]); } catch (Exception e) { System.out.println("Invlaid Port"); } if (((port <= 65535) && (port >= 49152)) || port ==1099) { System.out.println("Valid Port"); } else { port = 1099; System.out.println("Port not in Dynamic Range 49152<-->65535"); } System.out.println(port); LocateRegistry.createRegistry(port); LocateRegistry.getRegistry().bind("CreditCardServer", ccs); while (true) { //hum? } } } The Stack Trace vega3 [ia32.linux] 23% java -Djava.security.policy=wideopen.policy -jar "BookStore-CreditCardServer.jar 65000" Valid Port 65000 Exception in thread "main" java.security.AccessControlException: access denied (java.net.SocketPermission 127.0.0.1:1099 connect,resolve) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:342) at java.security.AccessController.checkPermission(AccessController.java:553) at java.lang.SecurityManager.checkPermission(SecurityManager.java:549) at java.lang.SecurityManager.checkConnect(SecurityManager.java:1051) at java.net.Socket.connect(Socket.java:536) at java.net.Socket.connect(Socket.java:492) at java.net.Socket.<init>(Socket.java:389) at java.net.Socket.<init>(Socket.java:203) at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40) at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:146) at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613) at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216) at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202) at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:340) at sun.rmi.registry.RegistryImpl_Stub.bind(Unknown Source) at bookstorecreditcardserver.Main.main(Main.java:56) My Policy File grant { // Allow everything for now permission java.security.AllPermission; };

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• How to filter a mysql database with user input on a website and then spit the filtered table back to the website? [migrated]

  - by Luke

  I've been researching this on google for literally 3 weeks, racking my brain and still not quite finding anything. I can't believe this is so elusive. (I'm a complete beginner so if my terminology sounds stupid then that's why.) I have a database in mysql/phpmyadmin on my web host. I'm trying to create a front end that will allow a user to specify criteria for querying the database in a way that they don't have to know sql, basically just combo boxes and checkboxes on a form. Then have this form 'submit' a query to the database, and show the filtered tables. This is how the SQL looks in Microsoft Access: PARAMETERS TEXTINPUT1 Text ( 255 ), NUMBERINPUT1 IEEEDouble; // pops up a list of parameters for the user to input SELECT DISTINCT Table1.Column1, Table1.Column2, Table1.Column3,* // selects only the unique rows in these three columns FROM Table1 // the table where this query is happening WHERE (((Table1.Column1) Like TEXTINPUT1] AND ((Table1.Column2)<=[NUMBERINPUT1] AND ((Table1.Column3)>=[NUMBERINPUT1])); // the criteria for the filter, it's comparing the user input parameters to the data in the rows and only selecting matches according to the equal sign, or greater than + equal sign, or less than + equal sign What I don't get: WHAT IN THE WORLD AM I SUPPOSED TO USE (that isn't totally hard)!? I've tried google fusion tables - doesn't filter right with numerical data or empty cells in rows, can't relate tables I've tried DataTables.net, can't filter right with numerical data and can't use SQL without a bunch of indepth knowledge, not even sure it can if you have that.. I've looked into using jQuery with google spreadsheets, doesn't work at all either I have no idea how I'm supposed to build a front end with my database. Every place that looks promising (like zohocreator) is asking for money, and is far too simplified to be able to do the LIKE criteria or SELECT DISTINCT stuff.

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• Java WebApp: Loading resource from .jar located in WEB-INF

  - by shaman.sir

  There are a lot of similar questions, but, probably, mine is a little bit different: What is the right way to load resource from inside of .jar file located in WEB-INF/lib folder (if I know the jar file name and the name of the class it resource belongs to), while Web Application is running? Should I use getServletContext().getResourceAsStream(?) for this purpose or the <name-of-known-class>.getResourseAsStream(?), and what path do I need to specify there? So, the structure is: /WEB-INF /classes /some/package/name ?.class #some Java code or Servlet that tries to read 'required-file.xml' /lib /<jar-with-known-name>.jar /another/package/with/known/name SomeKnownClass.class required-file.xml

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• Java problem: Could not find main class HelloWorld

  - by Newbie

  I am new to java(a real novice). I installed Java 1.7.0 in the following folder C:\Program Files\Java The environment variable which I set are CLASSPATH : C:\Program Files\Java\jdk1.7.0\jre\lib\rt.jar; Path : C:\Program Files\Java\jdk1.7.0\bin; JAVA_HOME : C:\Program Files\Java; I have presented here the class names which are in my system. Next I wrote a program(HelloWorld.java) import java.io.*; class HelloWorld { public static void main(String[] args) { System.out.println("Hello World!"); } } When I am compiling using javac HelloWorld.java it is compiling fine. But after I issue java HelloWorld I am encountering the below error Error: Could not find main class HelloWorld Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:198) Caused by: java.lang.ClassNotFoundException: HelloWorld at java.net.URLClassLoader$1.run(URLClassLoader.java:299) at java.net.URLClassLoader$1.run(URLClassLoader.java:288) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:287) at java.lang.ClassLoader.loadClass(ClassLoader.java:422) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:325) at java.lang.ClassLoader.loadClass(ClassLoader.java:355) at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:195) After a bit of google search I found that may be something wrong in the environment variable. I tried to play with that but no luck. I know that it may be a very simple thing for the real java developers(actually basic) but for me as of now no luck! I even RESTARTED the machine and then again I tried to run but with same fate. OS: Windows XP(Version 2002) with Service pack 3 Help needed . Thanks .

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• Is there a recommended order to take the Oracle Java EE certification exams?

  - by Karl

  I recently passed the Oracle Certified Professional, Java SE 6 Programmer examination. Now, my boss would like me to take "the next step" to broaden my competence. I tried to explain that there is no equivalent Java EE 6 Programmer examination, but a number of different exams, such as Web Services, Web Components, and Enterprise JavaBeans. Is there a recommended path to follow for the various Oracle certifications in the Enterprise Edition of Java? Is it logical to take some exams prior to taking others because the content builds upon previous knowledge or are they all independent?

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• "MOZILLA_FIVE_HOME not set" zekr quran study software java error

  - by Acess Denied

  I have installed zekr Quran study software on ubuntu 12.04 and I upgraded to 12.10. then the zekr app has been giving me this error when ever I start it. org.eclipse.swt.SWTError: No more handles [Unknown Mozilla path (MOZILLA_FIVE_HOME not set)] at org.eclipse.swt.SWT.error(SWT.java:4387) at org.eclipse.swt.browser.Mozilla.initMozilla(Mozilla.java:1939) at org.eclipse.swt.browser.Mozilla.create(Mozilla.java:699) at org.eclipse.swt.browser.Browser.<init>(Browser.java:99) at net.sf.zekr.ui.QuranForm.makeFrame(QuranForm.java:628) at net.sf.zekr.ui.QuranForm.init(QuranForm.java:340) at net.sf.zekr.ui.QuranForm.<init>(QuranForm.java:319) at net.sf.zekr.ZekrMain.startZekr(ZekrMain.java:51) at net.sf.zekr.ZekrMain.main(ZekrMain.java:94) Please Advice me

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• ???? “Java?”???????? ?Java???????????!--Java Day Tokyo 2013????

  - by ???Y

  2013?5?14????????Java Day Tokyo 2013?????????????????????1????????Java??????????????JavaOne???????????????????????????Java????????????????????????????????????????????????????????????????????????????????????(????) JavaOne?????????Java Day Tokyo 2013??? ??????Java?????????Java????????(JJUG)??????????????????????????????JJUG????????????????????????????????????????????????????????????????? ???????????????(?????) ???????????????????????????????4???????????????????????"Java SE 8"???????????????????????????????????????????????????? ??????????????????????????????????????2???????????? ???BigDecimal?????equals????????? 1???????BigDecimal?????equals???????????????????????????????????(equity)???(liabilities)?????????(asset)??????1???????????????? ????????Java SE 8???????????????????????????????????????????2??????????????????????????????????????????????????????????????????????????????????????????????????????????0???1???2?????????????? ?????????????BigDecimal???????????????????????????"100"???????????????????????100.00??????????????????????"10000"?????????????????10000????? ??????????BigDecimal?????equals?????????????????????????????2??????????????"10000"??????10000?????????????1???????????"100"???100.00??????????????????? ????????????????equals?????????2???????????????????????????????????????1??????????????????????compareTo???????????????????????????? switch????????? ??????HTML???HTML5????????????????Map?????<Progress>???<tt>???<applet>????3???????????????(new=?????deprecated=????removed=??)???????????switch??????????????????????????????????? ????????????????????????(????applet)?????????????????????????????decorate????????????????????????StringBuilder?????????????????????????? ??????????????????"<applet>?HTML5?????????"??????????????????????????????????????????4????? ???????????????????? ????????????????????????switch???case?break??????????????????????????????????"<applet>?HTML5?????????"???????????????????? ???????????????????????????????????switch??????????????????????????Java SE 6???switch????????????????????????Java SE 7?????????????????????????????????????????? ?????????????????? ????????????????????????????????????????????decorate??????????StringBuilder?????????????????????????????char???????(<)??????????????StringBuilder?????????char????????????????????????????????????????????int???99????????????? ????????????????????????append???????????name???(applet)??>?????????????????????????applet>????????? ????????????Map?status??<applet>???????applet>???????????switch??????status.get(key)????????????status?????null??????????? ???????"??"?????Java?????switch???????null????????NullPointerException??????????? ????????????????????????????????????? ????char?????????????????????????????(IDE)??????????????????????????????????????switch?????????????null????????????????????? ???????2???????????????????Java????·?????????????????????????????????????????????????????????????????????????

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• Which web framework to use under Backbonejs?

  - by egidra

  For a previous project, I was using Backbonejs alongside Django, but I found out that I didn't use many features from Django. So, I am looking for a lighter framework to use underneath a Backbonejs web app. I never used Django built in templates. When I did, it was to set up the initial index page, but that's all. I did use the user management system that Django provided. I used the models.py, but never views.py. I used urls.py to set up which template the user would hit upon visiting the site. I noticed that the two features that I used most from Django was South and Tastypie, and they aren't even included with Django. Particularly, django-tastypie made it easy for me to link up my frontend models to my backend models. It made it easy to JSONify my front end models and send them to Tastypie. Although, I found myself overriding a lot of tastypie's methods for GET, PUT, POST requests, so it became useless. South made it easy to migrate new changes to the database. Although, I had so much trouble with South. Is there a framework with an easier way of handling database modifications than using South? When using South with multiple people, we had the worse time keeping our databases synced. When someone added a new table and pushed their migration to git, the other two people would spend days trying to use South's automatic migration, but it never worked. I liked how Rails had a manual way of migrating databases. Even though I used Tastypie and South a lot, I found myself not actually liking them because I ended up overriding most Tastypie methods for each Resource, and I also had the worst trouble migrating new tables and columns with South. So, I would like a framework that makes that process easier. Part of my problem was that they are too "magical". Which framework should I use? Nodejs or a lighter Python framework? Which works best with my above criteria?

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• Reuse Business Logic between Web and API

  - by fesja

  We have a website and two mobile apps that connect through an API. All the platforms do the exactly same things. Right now the structure is the following: Website. It manages models, controllers, views for the website. It also executes all background tasks. So if a user create a place, everything is executed in this code. API. It manages models, controllers and return a JSON. If a user creates a place on the mobile app, the place is created here. After, we add a background task to update other fields. This background task is executed by the Website. We are redoing everything, so it's time to improve the approach. Which is the best way to reuse the business logic so I only need to code the insert/edit/delete of the place & other actions related in just one place? Is a service oriented approach a good idea? For example: Service. It has the models and gets, adds, updates and deletes info from the DB. Website. It send the info to the service, and it renders HTML. API. It sends info to the service, and it returns JSON. Some problems I have found: More initial work? Not sure.. It can work slower. Any experience? The benefits: We only have the business logic in one place, both for web and api. It's easier to scale. We can put each piece on different servers. Other solutions Duplicate the code and be careful not to forget anything (do tests!) DUplicate some code but execute background tasks that updates the related fields and executes other things (emails, indexing...) A "small" detail is we are 1.3 person in backend, for now ;)

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• Java Spotlight Episode 35: JVM Performance and Quality

  - by Roger Brinkley

  Tweet Interview with Vladimir Ivanov, Ivan Krylov, Sergey Kuksenko on the JDK 7 Java Virtual Machine performance and quality. Joining us this week on the Java All Star Developer Panel are Dalibor Topic, Java Free and Open Source Software Ambassador, and Alexis Moussine-Pouchkine, Java EE Developer Advocate. Right-click or Control-click to download this MP3 file. You can also subscribe to the Java Spotlight Podcast Feed to get the latest podcast automatically. If you use iTunes you can open iTunes and subscribe with this link: Java Spotlight Podcast in iTunes. Show Notes News Java 7 Launch Event GlassFish 3.1.1 re-planning done, first RC on July 7th, lots of component updates following customer and community feedback Mojarra 2.1.2 is here, just a little ahead of the GlassFish 3.1.1 release. In other JSF-related news, JSF 2.0 has a first expert draft New OpenJDK Project proposed: JDK 7 Update Events June 20-23 JAX, San Jose, CA June 21 Java + MySQL Webinar at 9:00 AM PDT June 21-23 JaZoon, Zurich, Switzerland June 22nd and 28th GlassFish Webinars (one in Portuguese) June 29-July 2 12th Forum Internatioal Software Livre, Porto Alegre, Brazil July 3, Sao Jose do Rio Preto, Brazil July 5, Brasilia, Brazil (DFJUG) July 6, Goiania, Brazil (GOJava) July 6-10 The Developers Conference, Sao Paulo, Brazil July 7 Java 7 Launch Event live in Redwood Shores, CA; Sao Paulo, BR; London, England. July 9, Joao Pessoa, Brazil (PBJUG) July 11, Natal, Brazil (JavaRN) July 14, Fortaleza, Brazil (CEJUG) July 16, Salvador, Brazil (JavaBahia) July 19, Toledo, Brazil (UNIPAR) July 21, Maringa, Brazil (RedFoot) Feature interview This weeks feature interview is with Vladimir Ivanov, HotSpot JVM Quality Engingeer;  Ivan Krylov, Licensee Engineering;  and Sergey Kuksenko, Java SE Performance Team on the JDK 7 Java Virtual Machine peformance and quality. What's Cool Ongoing OpenJDK Bylaws ratification results Show Transcripts Transcript for this show is available here when available

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• Java language book for an experienced programmer?

  - by Andrew

  I am looking for book to get up to speed with (start with) a Java language. I am experienced (more than 15 years) C# and C++ programmer with a bit of Python, so I don't need a book which starts with a programming concepts for a beginner. In fact I think I need a "Java language specification" sort of book. I checked the answers to questions similar to mine and found that there two books which is being recommended most: "Effective Java" and "Sun Certified Java Programmer". After a quick look at the "Effective Java" I realised it should not be a book to start with, it is a good book (I read all books in Effective C++, STL series and liked them but they are more "good practices" books, rather than a book for a beginners) "Sun Certified Java Programmer" looks closer to what I am after - but goes too slow for me. So I did some more search and found these two books: The Java(TM) Language Specification by Gosling himself Java™ Programming Language, The (4th Edition) by Ken Arnold I gather the first one a little bit dated and the second one is the best Java Language Reference books up to date, but I am not sure - as I am not a Java person to make such judgements. After reading the language reference book I will start learning the basic libraries / packages / namespaces (collections, algorithms, IO, etc) and then something about UI architecture. But that will come later. Question: - which Java Language reference book for an experienced programmer you can recomend ? and why? Cheers.

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• Java Components Landing Page and Documentation Updates

  - by joni g.

  The new Java Components page provides access to the documentation for tools that are available for monitoring, managing, and testing Java applications. Documentation for the new versions of the following tools is available: JavaTest Harness 4.6. The JavaTest harness is a general purpose, fully-featured, flexible, and configurable test harness that is suited for most types of unit testing. See the JavaTest tab for documentation. SigTest 3.1. SigTest is a collection of tools that can be used to compare APIs and to measure the test coverage of an API. See the SigTest tab for documentation. The following tools are part of Oracle Java SE Advanced and Oracle Java SE Suite. Java Mission Control and Java Flight Control 5.4 are supported in JDK 8u20. Java Flight Recorder and Java Mission Control together create a complete tool chain to continuously collect low level and detailed runtime information enabling after-the-fact incident analysis. See the JMC tab for documentation. Advanced Management Console 1.0 is a new tool that is now available. AMC can be used to view information about the Java applets and Java Web Start applications running in your enterprise, and create deployment rules and rule sets to manage the execution of these applications. See the AMC tab for documentation. Usage Tracker tracks how Java Runtime Environments (JREs) are being used in your systems. See the Usage Tracker tab for documentation.

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• Are there good replacements for client-side java in web programming? [closed]

  - by varesa

  Now since the latest java exploit, and many others in the past, people are again recommended to get rid of java on their computers for good. I, as a java web applications developer, am think about possible alternatives. Many seem to have gotten rid of java, so I would not like to develop for an environmet, that users do not have on their computers, and that they are not willing to install for security reasons. Are there any other real options that HTML5 + JS? (Don't take me wrong about not wanting HTML5+JS, I just want to know the options)

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• bidirectional OneToOne Mapping : From Entity to subclass and from superclass to Entity?

  - by Teocali

  I'm trying to establish a tricky bidirectional OneToOne mapping in hibernate. I got the following classes : @Entity @Inheritance(strategy = InheritanceType.JOINED) public class Parent { @OneToOne private AnotherEntity anotherEntity; } @Entity public class Child1 extends Parent{} @Entity public class Child2 extends Parent{} @Entity public class AnotherEntity { @OneToOne(mappedBy = "anotherEntity") private Child1 child1; @OneToOne(mappedBy = "anotherEntity") private Child1 child2; } The problem here is when I'm launching the application : I got the following message : org.hibernate.MappingException: property [anotherEntity] not found on entity [Child1] at org.hibernate.mapping.PersistentClass.getRecursiveProperty(PersistentClass.java:429) at org.hibernate.mapping.PersistentClass.getReferencedProperty(PersistentClass.java:369) at org.hibernate.cfg.Configuration.originalSecondPassCompile(Configuration.java:1614) at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1362) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1727) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1778) at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.java:189) at org.springframework.orm.hibernate4.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:350) at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:335) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645) at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508) at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449) at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133) at javax.servlet.GenericServlet.init(GenericServlet.java:160) at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1080) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5015) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5302) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:962) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:536) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1471) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761) at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1436) at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:673) at org.apache.catalina.manager.ManagerServlet.doPut(ManagerServlet.java:431) at javax.servlet.http.HttpServlet.service(HttpServlet.java:644) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:581) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) One obvious solution would be to move the anotherEntity field to Child1 and Child2, but it would mean lose the link from Parent to AnotherEntity. Any help welcome.

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• JBoss5: Cannot deploy due to java.util.zip.ZipException: error in opening zip file

  - by Andreas

  I have a web client and a EJB project, which I created with Eclipse 3.4. When I want to deploy it on Jboss 5.0.1, I receive the error below. I searched a lot but I wasn't able to find a solution to this. 18:21:21,899 INFO [ServerImpl] Starting JBoss (Microcontainer)... 18:21:21,900 INFO [ServerImpl] Release ID: JBoss [Morpheus] 5.0.1.GA (build: SVNTag=JBoss_5_0_1_GA date=200902231221) 18:21:21,900 INFO [ServerImpl] Bootstrap URL: null 18:21:21,900 INFO [ServerImpl] Home Dir: /Applications/jboss-5.0.1.GA 18:21:21,900 INFO [ServerImpl] Home URL: file:/Applications/jboss-5.0.1.GA/ 18:21:21,901 INFO [ServerImpl] Library URL: file:/Applications/jboss-5.0.1.GA/lib/ 18:21:21,901 INFO [ServerImpl] Patch URL: null 18:21:21,901 INFO [ServerImpl] Common Base URL: file:/Applications/jboss-5.0.1.GA/common/ 18:21:21,902 INFO [ServerImpl] Common Library URL: file:/Applications/jboss-5.0.1.GA/common/lib/ 18:21:21,902 INFO [ServerImpl] Server Name: default 18:21:21,902 INFO [ServerImpl] Server Base Dir: /Applications/jboss-5.0.1.GA/server 18:21:21,902 INFO [ServerImpl] Server Base URL: file:/Applications/jboss-5.0.1.GA/server/ 18:21:21,902 INFO [ServerImpl] Server Config URL: file:/Applications/jboss-5.0.1.GA/server/default/conf/ 18:21:21,902 INFO [ServerImpl] Server Home Dir: /Applications/jboss-5.0.1.GA/server/default 18:21:21,902 INFO [ServerImpl] Server Home URL: file:/Applications/jboss-5.0.1.GA/server/default/ 18:21:21,903 INFO [ServerImpl] Server Data Dir: /Applications/jboss-5.0.1.GA/server/default/data 18:21:21,903 INFO [ServerImpl] Server Library URL: file:/Applications/jboss-5.0.1.GA/server/default/lib/ 18:21:21,903 INFO [ServerImpl] Server Log Dir: /Applications/jboss-5.0.1.GA/server/default/log 18:21:21,903 INFO [ServerImpl] Server Native Dir: /Applications/jboss-5.0.1.GA/server/default/tmp/native 18:21:21,903 INFO [ServerImpl] Server Temp Dir: /Applications/jboss-5.0.1.GA/server/default/tmp 18:21:21,903 INFO [ServerImpl] Server Temp Deploy Dir: /Applications/jboss-5.0.1.GA/server/default/tmp/deploy 18:21:22,669 INFO [ServerImpl] Starting Microcontainer, bootstrapURL=file:/Applications/jboss-5.0.1.GA/server/default/conf/bootstrap.xml 18:21:23,535 INFO [VFSCacheFactory] Initializing VFSCache [org.jboss.virtual.plugins.cache.CombinedVFSCache] 18:21:23,541 INFO [VFSCacheFactory] Using VFSCache [CombinedVFSCache[real-cache: null]] 18:21:23,942 INFO [CopyMechanism] VFS temp dir: /Applications/jboss-5.0.1.GA/server/default/tmp 18:21:23,943 INFO [ZipEntryContext] VFS force nested jars copy-mode is enabled. 18:21:26,263 INFO [ServerInfo] Java version: 1.5.0_16,Apple Inc. 18:21:26,264 INFO [ServerInfo] Java Runtime: Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_16-b06-284) 18:21:26,264 INFO [ServerInfo] Java VM: Java HotSpot(TM) Server VM 1.5.0_16-133,Apple Inc. 18:21:26,264 INFO [ServerInfo] OS-System: Mac OS X 10.5.6,i386 18:21:26,336 INFO [JMXKernel] Legacy JMX core initialized 18:21:30,432 INFO [ProfileServiceImpl] Loading profile: default from: org.jboss.system.server.profileservice.repository.SerializableDeploymentRepository@e1d5d9(root=/Applications/jboss-5.0.1.GA/server, key=org.jboss.profileservice.spi.ProfileKey@143b82c3[domain=default,server=default,name=default]) 18:21:30,436 INFO [ProfileImpl] Using repository:org.jboss.system.server.profileservice.repository.SerializableDeploymentRepository@e1d5d9(root=/Applications/jboss-5.0.1.GA/server, key=org.jboss.profileservice.spi.ProfileKey@143b82c3[domain=default,server=default,name=default]) 18:21:30,436 INFO [ProfileServiceImpl] Loaded profile: ProfileImpl@ae002e{key=org.jboss.profileservice.spi.ProfileKey@143b82c3[domain=default,server=default,name=default]} 18:21:32,935 INFO [WebService] Using RMI server codebase: http://localhost:8083/ 18:21:42,572 INFO [NativeServerConfig] JBoss Web Services - Stack Native Core 18:21:42,573 INFO [NativeServerConfig] 3.0.5.GA 18:21:52,836 ERROR [AbstractKernelController] Error installing to ClassLoader: name=vfsfile:/Applications/jboss-5.0.1.GA/server/default/deploy/TwitterEAR.ear/ state=Describe mode=Manual requiredState=ClassLoader org.jboss.deployers.spi.DeploymentException: Error creating classloader for vfsfile:/Applications/jboss-5.0.1.GA/server/default/deploy/TwitterEAR.ear/ at org.jboss.deployers.spi.DeploymentException.rethrowAsDeploymentException(DeploymentException.java:49) at org.jboss.deployers.structure.spi.helpers.AbstractDeploymentContext.createClassLoader(AbstractDeploymentContext.java:576) at org.jboss.deployers.structure.spi.helpers.AbstractDeploymentUnit.createClassLoader(AbstractDeploymentUnit.java:159) at org.jboss.deployers.spi.deployer.helpers.AbstractClassLoaderDeployer.deploy(AbstractClassLoaderDeployer.java:53) at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171) at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439) at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157) at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098) at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348) at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1598) at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934) at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1062) at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984) at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822) at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553) at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:781) at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:698) at org.jboss.system.server.profileservice.ProfileServiceBootstrap.loadProfile(ProfileServiceBootstrap.java:304) at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:205) at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:405) at org.jboss.Main.boot(Main.java:209) at org.jboss.Main$1.run(Main.java:547) at java.lang.Thread.run(Thread.java:613) Caused by: java.lang.Error: Error visiting FileHandler@5567366[path=TwitterEAR.ear/TwitterPoCEJB.jar context=file:/Applications/jboss-5.0.1.GA/server/default/deploy/ real=file:/Applications/jboss-5.0.1.GA/server/default/deploy/TwitterEAR.ear/TwitterPoCEJB.jar/] at org.jboss.classloading.plugins.vfs.PackageVisitor.determineAllPackages(PackageVisitor.java:98) at org.jboss.deployers.vfs.plugins.classloader.VFSDeploymentClassLoaderPolicyModule.determineCapabilities(VFSDeploymentClassLoaderPolicyModule.java:108) at org.jboss.classloading.spi.dependency.Module.getCapabilities(Module.java:654) at org.jboss.classloading.spi.dependency.Module.determinePackageNames(Module.java:713) at org.jboss.classloading.spi.dependency.Module.getPackageNames(Module.java:698) at org.jboss.deployers.vfs.plugins.classloader.VFSDeploymentClassLoaderPolicyModule.determinePolicy(VFSDeploymentClassLoaderPolicyModule.java:129) at org.jboss.deployers.vfs.plugins.classloader.VFSDeploymentClassLoaderPolicyModule.determinePolicy(VFSDeploymentClassLoaderPolicyModule.java:48) at org.jboss.classloading.spi.dependency.policy.ClassLoaderPolicyModule.getPolicy(ClassLoaderPolicyModule.java:195) at org.jboss.deployers.vfs.plugins.classloader.VFSDeploymentClassLoaderPolicyModule.getPolicy(VFSDeploymentClassLoaderPolicyModule.java:122) at org.jboss.deployers.vfs.plugins.classloader.VFSDeploymentClassLoaderPolicyModule.getPolicy(VFSDeploymentClassLoaderPolicyModule.java:48) at org.jboss.classloading.spi.dependency.policy.ClassLoaderPolicyModule.registerClassLoaderPolicy(ClassLoaderPolicyModule.java:131) at org.jboss.deployers.plugins.classloading.AbstractLevelClassLoaderSystemDeployer.createClassLoader(AbstractLevelClassLoaderSystemDeployer.java:120) at org.jboss.deployers.structure.spi.helpers.AbstractDeploymentContext.createClassLoader(AbstractDeploymentContext.java:562) ... 21 more Caused by: java.lang.RuntimeException: java.util.zip.ZipException: error in opening zip file at org.jboss.virtual.plugins.context.AbstractExceptionHandler.handleZipEntriesInitException(AbstractExceptionHandler.java:39) at org.jboss.virtual.plugins.context.helpers.NamesExceptionHandler.handleZipEntriesInitException(NamesExceptionHandler.java:63) at org.jboss.virtual.plugins.context.zip.ZipEntryContext.ensureEntries(ZipEntryContext.java:610) at org.jboss.virtual.plugins.context.zip.ZipEntryContext.checkIfModified(ZipEntryContext.java:757) at org.jboss.virtual.plugins.context.zip.ZipEntryContext.getChildren(ZipEntryContext.java:829) at org.jboss.virtual.plugins.context.zip.ZipEntryHandler.getChildren(ZipEntryHandler.java:159) at org.jboss.virtual.plugins.context.DelegatingHandler.getChildren(DelegatingHandler.java:121) at org.jboss.virtual.plugins.context.AbstractVFSContext.getChildren(AbstractVFSContext.java:211) at org.jboss.virtual.plugins.context.AbstractVFSContext.visit(AbstractVFSContext.java:328) at org.jboss.virtual.plugins.context.AbstractVFSContext.visit(AbstractVFSContext.java:298) at org.jboss.virtual.VFS.visit(VFS.java:433) at org.jboss.virtual.VirtualFile.visit(VirtualFile.java:437) at org.jboss.virtual.VirtualFile.getChildren(VirtualFile.java:386) at org.jboss.virtual.VirtualFile.getChildren(VirtualFile.java:367) at org.jboss.classloading.plugins.vfs.PackageVisitor.visit(PackageVisitor.java:200) at org.jboss.virtual.plugins.vfs.helpers.WrappingVirtualFileHandlerVisitor.visit(WrappingVirtualFileHandlerVisitor.java:62) at org.jboss.virtual.plugins.context.AbstractVFSContext.visit(AbstractVFSContext.java:353) at org.jboss.virtual.plugins.context.AbstractVFSContext.visit(AbstractVFSContext.java:298) at org.jboss.virtual.VFS.visit(VFS.java:433) at org.jboss.virtual.VirtualFile.visit(VirtualFile.java:437) at org.jboss.classloading.plugins.vfs.PackageVisitor.determineAllPackages(PackageVisitor.java:94) ... 33 more Caused by: java.util.zip.ZipException: error in opening zip file at java.util.zip.ZipFile.open(Native Method) at java.util.zip.ZipFile.<init>(ZipFile.java:203) at java.util.zip.ZipFile.<init>(ZipFile.java:234) at org.jboss.virtual.plugins.context.zip.ZipFileWrapper.ensureZipFile(ZipFileWrapper.java:175) at org.jboss.virtual.plugins.context.zip.ZipFileWrapper.acquire(ZipFileWrapper.java:245) at org.jboss.virtual.plugins.context.zip.ZipEntryContext.initEntries(ZipEntryContext.java:470) at org.jboss.virtual.plugins.context.zip.ZipEntryContext.ensureEntries(ZipEntryContext.java:603) ... 51 more 18:21:56,772 INFO [JMXConnectorServerService] JMX Connector server: service:jmx:rmi://localhost/jndi/rmi://localhost:1090/jmxconnector 18:21:56,959 INFO [MailService] Mail Service bound to java:/Mail 18:21:59,450 WARN [JBossASSecurityMetadataStore] WARNING! POTENTIAL SECURITY RISK. It has been detected that the MessageSucker component which sucks messages from one node to another has not had its password changed from the installation default. Please see the JBoss Messaging user guide for instructions on how to do this. 18:21:59,489 WARN [AnnotationCreator] No ClassLoader provided, using TCCL: org.jboss.managed.api.annotation.ManagementComponent 18:21:59,789 INFO [TransactionManagerService] JBossTS Transaction Service (JTA version) - JBoss Inc. 18:21:59,789 INFO [TransactionManagerService] Setting up property manager MBean and JMX layer 18:22:00,040 INFO [TransactionManagerService] Initializing recovery manager 18:22:00,160 INFO [TransactionManagerService] Recovery manager configured 18:22:00,160 INFO [TransactionManagerService] Binding TransactionManager JNDI Reference 18:22:00,184 INFO [TransactionManagerService] Starting transaction recovery manager 18:22:01,243 INFO [Http11Protocol] Initializing Coyote HTTP/1.1 on http-localhost%2F127.0.0.1-8080 18:22:01,244 INFO [AjpProtocol] Initializing Coyote AJP/1.3 on ajp-localhost%2F127.0.0.1-8009 18:22:01,244 INFO [StandardService] Starting service jboss.web 18:22:01,247 INFO [StandardEngine] Starting Servlet Engine: JBoss Web/2.1.2.GA 18:22:01,336 INFO [Catalina] Server startup in 161 ms 18:22:01,360 INFO [TomcatDeployment] deploy, ctxPath=/invoker 18:22:02,014 INFO [TomcatDeployment] deploy, ctxPath=/web-console 18:22:02,459 INFO [TomcatDeployment] deploy, ctxPath=/jbossws 18:22:02,570 INFO [RARDeployment] Required license terms exist, view vfszip:/Applications/jboss-5.0.1.GA/server/default/deploy/jboss-local-jdbc.rar/META-INF/ra.xml 18:22:02,586 INFO [RARDeployment] Required license terms exist, view vfszip:/Applications/jboss-5.0.1.GA/server/default/deploy/jboss-xa-jdbc.rar/META-INF/ra.xml 18:22:02,645 INFO [RARDeployment] Required license terms exist, view vfszip:/Applications/jboss-5.0.1.GA/server/default/deploy/jms-ra.rar/META-INF/ra.xml 18:22:02,663 INFO [RARDeployment] Required license terms exist, view vfszip:/Applications/jboss-5.0.1.GA/server/default/deploy/mail-ra.rar/META-INF/ra.xml 18:22:02,705 INFO [RARDeployment] Required license terms exist, view vfszip:/Applications/jboss-5.0.1.GA/server/default/deploy/quartz-ra.rar/META-INF/ra.xml 18:22:02,801 INFO [SimpleThreadPool] Job execution threads will use class loader of thread: main 18:22:02,850 INFO [QuartzScheduler] Quartz Scheduler v.1.5.2 created. 18:22:02,857 INFO [RAMJobStore] RAMJobStore initialized. 18:22:02,858 INFO [StdSchedulerFactory] Quartz scheduler 'DefaultQuartzScheduler' initialized from default resource file in Quartz package: 'quartz.properties' 18:22:02,858 INFO [StdSchedulerFactory] Quartz scheduler version: 1.5.2 18:22:02,859 INFO [QuartzScheduler] Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED started. 18:22:03,888 INFO [ConnectionFactoryBindingService] Bound ConnectionManager 'jboss.jca:service=DataSourceBinding,name=DefaultDS' to JNDI name 'java:DefaultDS' 18:22:04,530 INFO [ServerPeer] JBoss Messaging 1.4.1.GA server [0] started 18:22:04,624 INFO [QueueService] Queue[/queue/DLQ] started, fullSize=200000, pageSize=2000, downCacheSize=2000 18:22:04,632 WARN [ConnectionFactoryJNDIMapper] supportsFailover attribute is true on connection factory: jboss.messaging.connectionfactory:service=ClusteredConnectionFactory but post office is non clustered. So connection factory will *not* support failover 18:22:04,632 WARN [ConnectionFactoryJNDIMapper] supportsLoadBalancing attribute is true on connection factory: jboss.messaging.connectionfactory:service=ClusteredConnectionFactory but post office is non clustered. So connection factory will *not* support load balancing 18:22:04,742 INFO [ConnectionFactory] Connector bisocket://localhost:4457 has leasing enabled, lease period 10000 milliseconds 18:22:04,742 INFO [ConnectionFactory] org.jboss.jms.server.connectionfactory.ConnectionFactory@6af9ad started 18:22:04,746 INFO [QueueService] Queue[/queue/ExpiryQueue] started, fullSize=200000, pageSize=2000, downCacheSize=2000 18:22:04,747 INFO [ConnectionFactory] Connector bisocket://localhost:4457 has leasing enabled, lease period 10000 milliseconds 18:22:04,747 INFO [ConnectionFactory] org.jboss.jms.server.connectionfactory.ConnectionFactory@5ac953 started 18:22:04,750 INFO [ConnectionFactory] Connector bisocket://localhost:4457 has leasing enabled, lease period 10000 milliseconds 18:22:04,750 INFO [ConnectionFactory] org.jboss.jms.server.connectionfactory.ConnectionFactory@e8fa3a started 18:22:05,050 INFO [ConnectionFactoryBindingService] Bound ConnectionManager 'jboss.jca:service=ConnectionFactoryBinding,name=JmsXA' to JNDI name 'java:JmsXA' 18:22:05,073 INFO [TomcatDeployment] deploy, ctxPath=/ 18:22:05,178 INFO [TomcatDeployment] deploy, ctxPath=/jmx-console 18:22:05,290 ERROR [ProfileServiceBootstrap] Failed to load profile: Summary of incomplete deployments (SEE PREVIOUS ERRORS FOR DETAILS): DEPLOYMENTS IN ERROR: Deployment "vfsfile:/Applications/jboss-5.0.1.GA/server/default/deploy/TwitterEAR.ear/" is in error due to the following reason(s): java.util.zip.ZipException: error in opening zip file 18:22:05,301 INFO [Http11Protocol] Starting Coyote HTTP/1.1 on http-localhost%2F127.0.0.1-8080 18:22:05,364 INFO [AjpProtocol] Starting Coyote AJP/1.3 on ajp-localhost%2F127.0.0.1-8009 18:22:05,373 INFO [ServerImpl] JBoss (Microcontainer) [5.0.1.GA (build: SVNTag=JBoss_5_0_1_GA date=200902231221)] Started in 43s:467ms The mentioned ear and war file are both in the deploy directory. Does anybody have hints?

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• Java Errors with jRuby on Rails on Google App Engine

  - by John Wang

  I followed all of the instructions so far from: http://code.google.com/p/appengine-jruby/wiki/RunningRails and http://gist.github.com/268192 Currently, I'm just trying to get to hello world. I'm getting these errors when I just run the dev_appserver.rb 238:hello-world jwang392$ dev_appserver.rb . => Booting DevAppServer => Press Ctrl-C to shutdown server => Generating configuration files 2010-04-08 09:16:51.961 java[411:1707] [Java CocoaComponent compatibility mode]: Enabled 2010-04-08 09:16:51.964 java[411:1707] [Java CocoaComponent compatibility mode]: Setting timeout for SWT to 0.100000 Apr 8, 2010 7:17:05 PM com.google.appengine.tools.development.ApiProxyLocalImpl log SEVERE: [1270754225387000] javax.servlet.ServletContext log: Warning: error application could not be initialized org.jruby.rack.RackInitializationException: no such file to load -- time from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25:in `boot!' from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/boot/rack.rb:10 from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1:in `load' from <script>:1 at org.jruby.rack.DefaultRackApplicationFactory $4.init(DefaultRackApplicationFactory.java:169) at org.jruby.rack.DefaultRackApplicationFactory.newErrorApplication(DefaultRac kApplicationFactory.java: 118) at org.jruby.rack.DefaultRackApplicationFactory.init(DefaultRackApplicationFac tory.java: 37) at org.jruby.rack.SharedRackApplicationFactory.init(SharedRackApplicationFacto ry.java: 26) at org.jruby.rack.RackServletContextListener.contextInitialized(RackServletCon textListener.java: 40) at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java: 530) at org.mortbay.jetty.servlet.Context.startContext(Context.java:135) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java: 1218) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java: 500) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java: 448) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java: 117) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java: 117) at org.mortbay.jetty.Server.doStart(Server.java:217) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at com.google.appengine.tools.development.JettyContainerService.startContainer (JettyContainerService.java: 188) at com.google.appengine.tools.development.AbstractContainerService.startup(Abs tractContainerService.java: 147) at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerI mpl.java: 219) at com.google.appengine.tools.development.DevAppServerMain $StartAction.apply(DevAppServerMain.java:162) at com.google.appengine.tools.util.Parser $ParseResult.applyArgs(Parser.java:48) at com.google.appengine.tools.development.DevAppServerMain.<init>(DevAppServer Main.java: 113) at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMa in.java: 89) Caused by: org.jruby.exceptions.RaiseException: no such file to load -- time at (unknown).new(file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25) at Kernel.require(file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25) at JRuby::Rack::Booter.boot!(file:/Users/jwang392/hello-world/WEB-INF/ lib/jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:10) at (unknown).(unknown)(file:/Users/jwang392/hello-world/WEB-INF/lib/ jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1) at (unknown).(unknown)(file:/Users/jwang392/Dhello-world/WEB-INF/lib/ jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1) at Kernel.load(<script>:1) at (unknown).(unknown)(:1) Apr 8, 2010 7:17:05 PM com.google.appengine.tools.development.ApiProxyLocalImpl log SEVERE: [1270754225913000] javax.servlet.ServletContext log: unable to create shared application instance org.jruby.rack.RackInitializationException: no such file to load -- time from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25:in `boot!' from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/boot/rack.rb:10 from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1:in `load' from <script>:1 at org.jruby.rack.DefaultRackApplicationFactory $4.init(DefaultRackApplicationFactory.java:169) at org.jruby.rack.DefaultRackApplicationFactory.getApplication(DefaultRackAppl icationFactory.java: 51) at org.jruby.rack.SharedRackApplicationFactory.init(SharedRackApplicationFacto ry.java: 27) at org.jruby.rack.RackServletContextListener.contextInitialized(RackServletCon textListener.java: 40) at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java: 530) at org.mortbay.jetty.servlet.Context.startContext(Context.java:135) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java: 1218) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java: 500) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java: 448) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java: 117) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java: 117) at org.mortbay.jetty.Server.doStart(Server.java:217) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at com.google.appengine.tools.development.JettyContainerService.startContainer (JettyContainerService.java: 188) at com.google.appengine.tools.development.AbstractContainerService.startup(Abs tractContainerService.java: 147) at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerI mpl.java: 219) at com.google.appengine.tools.development.DevAppServerMain $StartAction.apply(DevAppServerMain.java:162) at com.google.appengine.tools.util.Parser $ParseResult.applyArgs(Parser.java:48) at com.google.appengine.tools.development.DevAppServerMain.<init>(DevAppServer Main.java: 113) at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMa in.java: 89) Caused by: org.jruby.exceptions.RaiseException: no such file to load -- time at (unknown).new(file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25) at Kernel.require(file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25) at JRuby::Rack::Booter.boot!(file:/Users/jwang392/hello-world/WEB-INF/ lib/jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:10) at (unknown).(unknown)(file:/Users/jwang392/hello-world/WEB-INF/lib/ jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1) at (unknown).(unknown)(file:/Users/jwang392/hello-world/WEB-INF/lib/ jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1) at Kernel.load(<script>:1) at (unknown).(unknown)(:1) Apr 8, 2010 7:17:05 PM com.google.appengine.tools.development.ApiProxyLocalImpl log SEVERE: [1270754225915000] javax.servlet.ServletContext log: Error: application initialization failed org.jruby.rack.RackInitializationException: unable to create shared application instance at org.jruby.rack.SharedRackApplicationFactory.init(SharedRackApplicationFacto ry.java: 39) at org.jruby.rack.RackServletContextListener.contextInitialized(RackServletCon textListener.java: 40) at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java: 530) at org.mortbay.jetty.servlet.Context.startContext(Context.java:135) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java: 1218) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java: 500) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java: 448) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java: 117) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java: 117) at org.mortbay.jetty.Server.doStart(Server.java:217) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at com.google.appengine.tools.development.JettyContainerService.startContainer (JettyContainerService.java: 188) at com.google.appengine.tools.development.AbstractContainerService.startup(Abs tractContainerService.java: 147) at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerI mpl.java: 219) at com.google.appengine.tools.development.DevAppServerMain $StartAction.apply(DevAppServerMain.java:162) at com.google.appengine.tools.util.Parser $ParseResult.applyArgs(Parser.java:48) at com.google.appengine.tools.development.DevAppServerMain.<init>(DevAppServer Main.java: 113) at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMa in.java: 89) Caused by: org.jruby.rack.RackInitializationException: no such file to load -- time from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25:in `boot!' from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/boot/rack.rb:10 from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1:in `load' from <script>:1 at org.jruby.rack.DefaultRackApplicationFactory $4.init(DefaultRackApplicationFactory.java:169) at org.jruby.rack.DefaultRackApplicationFactory.getApplication(DefaultRackAppl icationFactory.java: 51) at org.jruby.rack.SharedRackApplicationFactory.init(SharedRackApplicationFacto ry.java: 27) ... 19 more Caused by: org.jruby.exceptions.RaiseException: no such file to load -- time at (unknown).new(file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25) at Kernel.require(file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25) at JRuby::Rack::Booter.boot!(file:/Users/jwang392/hello-world/WEB-INF/ lib/jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:10) at (unknown).(unknown)(file:/Users/jwang392/hello-world/WEB-INF/lib/ jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1) at (unknown).(unknown)(file:/Users/jwang392/hello-world/WEB-INF/lib/ jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1) at Kernel.load(<script>:1) at (unknown).(unknown)(:1) The server is running at http://localhost:8080/ I'm at a loss at what step I may have missed. I checked my ruby version (1.8.7) and rails version (2.3.5), gem version (1.3.6) and google-appengine-0.0.10.1 ran: sudo gem install google-appengine curl -O http://appengine-jruby.googlecode.com/hg/demos/rails2/rails2_appengine.rb ruby rails2_appengine.rb sudo gem install rails_dm_datastore sudo gem install activerecord-nulldb-adapter put this in my config.ru file: run lambda { |env| Rack::Response.new('Hello World!').finish } and finally ran $ dev_appserver.rb .

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• High performance web (-services) applications

  - by User Friendly

  Hi, I'd like to become a guru in high performance web & web-services applications. What technologies/patterns/skills do you reccomend to look at? Basically, I have good skills at ASP.NET/.NET based web development, but I'd like to know how big things are built (on any platform, not depending on .net technology stack). Thank you.

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• Web Safe Area (optimal resolution) for web app design

  - by M.A.X

  I'm in the process of designing a new web app and I'm wondering for what 'web safe area' should I optimize the app layout and design. I did some investigation and thinking on my own but wanted to share this to see what the general opinion is. Here is what I found: Optimal Display Resolution: w3schools web stats seems to be the most referenced source (however they state that these are results from their site and is biased towards tech savvy users) http://www.w3counter.com/globalstats.php (aggregate data from something like 15,000 different sites that use their tracking services) StatCounter Global Stats Display Resolution (Stats are based on aggregate data collected by StatCounter on a sample exceeding 15 billion pageviews per month collected from across the StatCounter network of more than 3 million websites) NetMarketShare Screen Resolutions (marketshare.hitslink.com) (a web analytics consulting firm, they get data from browsers of site visitors to their on-demand network of live stats customers. The data is compiled from approximately 160 million visitors per month) Display Resolution Summary: There is a bit of variation between the above sources but in general as of Jan 2011 looks like 1024x768 is about 20%, while ~85% have a higher resolution of at least 1280x768 (1280x800 is the most common of these with 15-20% of total web, depending on the source; 1280x1024 and 1366x768 follow behind with 9-14% of the share). My guess would be that the higher resolution values will be even more common if we filter on North America, and even higher if we filter on N.American corporate users (unfortunately I couldn't find any free geographically filtered statistics). Another point to note is that the 1024x768 desktop user population is likely lower than the aforementioned 20%, seeing as the iPad (1024x768 native display) is likely propping up those number. My recommendation would be to optimize around the 1280x768 constraint (*note: 1280x768 is actually a relatively rare resolution, but I think it's a valid constraint range considering that 1366x768 is relatively common and 1280 is the most common horizontal resolution). Browser + OS Constraints: To further add to the constraints we have to subtract the space taken up by the browser (assuming IE, which is the most space consuming) and the OS (assuming WinXP-Win7): Win7 has the biggest taskbar footprint at a height of 40px (XP's and Vista's is 30px) The default IE8 view uses up 25px at the bottom of the screen with the status bar and a further 120px at the top of the screen with the windows title bar and the browser UI (assuming the default 'favorites' toolbar is present, it would instead be 91px without the favorites toolbar). Assuming no scrollbar, we also loose a total of 4px horizontally for the window outline. This means that we are left with 583px of vertical space and 1276px of horizontal. In other words, a Web Safe Area of 1276 x 583 Is this a correct line of thinking? I tried to Google some design best practices but most still talk about designing around 1024x768 which seems to be quickly disappearing. Any help on this would be greatly appreciated! Thanks.

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• Asp.net web site and web service hosting

  - by Razvi

  I have a web site and a web service and I would like to host them somewhere. I need to use it mostly for testing and so that a some friends who are developing some applications to use the service have access to it. Also the service is using a MS SQL 2008 database. Could you suggest any good free or cheap web hosting service for this. I would need about 1-2 months of hosting.

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• TechCast Live: "Java and Oracle, One Year Later" Replay Now Available

  - by Justin Kestelyn

  Earlier this week I had the opportunity to chat with Ajay Patel, Oracle's VP leading the Java Evangelist team, about "the state of the union" wrt Oracle and Java. Take a look: And here are some choice quotes, some paraphrased, as helpfully transcribed by Java evangelist Terrence Barr: "One key thing we have learned ... Java is not just a platform, it is also an ecosystem, and you can't have an ecosystem without a community." "The objectives, strategically [for Java at Oracle] have been pretty clear: How do we drive adoption, how do we build a larger, stronger developer community, how do we really make the platform much more competitive." "It's about transparency, involvement. IBM, RedHat, Apple have all agreed to working with us to make OpenJDK the best platform for open source development ... it is a sign that the community has been waiting to move the Java platform forward." "It's not just about Oracle anymore, it's about Java, the technology, the community, the developer base, and how we work with them to move the innovation forward." "Java is strategic to Oracle, and the community is strategic for Java to be successful ... it is critical to our business." On JavaFX 2.0: "... is coming to beta soon, with a release planned in second half [of 2011] ... will give you a new, high-performance graphics engine, the new API for JavaFX ... you will see a very strong, relevant platform for levering rich media platforms." On the JDK and SE: "... aggressively moving forward, JDK 7 is now code complete ... looking good for getting JDK 7 out by summer as we promised. Started work on JDK 8, Jigsaw and Lambda are moving along nicely, on track for JDK 8 release next year ... good progress." On Java EE and Glassfish: "... Very excited to have Glassfish 3.1 released, with clustering and management capabilities ... working with the JCP to shortly submit a number of JSRs for Java EE 7 ... You'll see Java EE 7 becoming the platform for cloud-based development." "You will see Oracle continue to step up to this role of Java steward, making sure that the language, the technology, the platform ... is competitive, relevant, and widely adopted." Making progress!

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• Java 8???????????????

  - by OTN-J Master

  ???????????Java Developer Newsletter(US?)9????????????????OTN?????Java Community Lead?Tori Wieldt?????????????????Oracle?Java?????????Jim Weaver???????????????????? Normal 0 0 2 false false false EN-US JA X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0mm 5.4pt 0mm 5.4pt; mso-para-margin:0mm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Century","serif"; mso-ascii-font-family:Century; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"MS ??"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Century; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;} ? Java Developer Newsletter (US?)9?????  ??JDK 8????????????????????OpenJDK??????????????????????????????????????????"????"(???????)?????????????????Project Lambda??????Early Access????????·????????????????????????????Java 8?????????????????Project Jigsaw??????????????????????????????Project Lambda?Early Access??????·????·??????????????????Java?????????Jim Weaver????????????????????????????????????????????????????Weaver??????????????—Oracle Technology Network Team?Tori Wieldt James Weaver?????Jim Weaver’s Rich-Client Java Blog ?????????? Java 8??????????????? "?????????????????????????????????????????"- Robert FrostJDK 8???????????????????????????????????????????????????????????????¦ ?????????? ??1??JDK 8????????????????????????Web?????????????????????????????????????????OpenJDK????JDK 8????????????¦ ?????????? ??2Project Jigsaw?????????????????????????????????????????????????????????????·????·???????????????????·????????????????????????Project Jigsaw?????JDK 8?Early Access????????????????????¦ ?????????? ??3????(??????????)??JavaFX????·?????????????????????OpenJDK????Project Lambda???????????????????Early Access????????·????????????????????JDK???????????????????????????? James Weaver ?OTN Japan??????? Java Magazine???????????????????????????????????Java???????????Java?????????????????????????????????? Java Developer Newsletter????????????????????????????! (???1000????Java&Duke??????????????????) >> ?????????????

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• ??????!?Java??????????

  - by rika.tokumichi

  Text by ?? ??(?????????? Fusion Middleware?????? - ???????????) IT??????????????????????????? ????????? ???????????? ???????????????????????????1??????????????????????????????????????????????? ???:?????????? Oracle Direct Seminar ?Java ?????????????????????????(2009?) ?????????????????·???????????????????????????????????????????????????????????????????????????????????????????????????????????? ???????????????????????????? ??????????????Java???????????????????? ???????????Java??????? ??????????????????????Java???????????????? ¦Apache Struts Java ?Web?????????????????????????????????????????????????? ???????????????????????????????????????????????? >????? ¦Spring Framework Dependency Injection(DI; ??????)?????????????????????????? DI???????????????????????????????????????????????Java????????????????????????????????????????? >????? >Oracle and Spring(??) ¦Apache log4j ?????????????????? ??????(???????)????????????????????????????????Apache log4j????????????????????????????????????????? ???Microsoft .Net(log4Net)?C++(log4cxx)?PHP(log4php)??Java??????????????????????????? >????? ¦JUnit JUnit?Java????????????????????????????????????????????????????????? Eclipse?NetBeans?JDeveloper??????????????????????????????????????????????????????????? >????? ?????????Java??????? ??????????????Java?????????????????? ¦Oracle TopLink ?????????Java???????????????????????????????????????????????????????????????????????????????????????? ??????????????????????O/R(Object/Relational)?????·?????????Oracle TopLink???????? O/R???????????Java Persistence API(JPA)???Java?????????????????Oracle TopLink????????????????????????????????????????? >????:Oracle TopLink >??????? ¦Oracle Application Development Framework(ADF) Web??????/?????????????????(???????)?????????????????????????????????? ?????????????????????????????????????????????????? Oracle ADF????????????·????????????????????????????Oracle TopLink?Apache Struts?EJB?JavaServer Faces???????????????????????????????????????????????? >????:Oracle Application Development Framework >??????? >Oracle ADF Overview Demo(??) ¦Oracle ADF Faces Oracle ADF Faces??JavaServer Faces(JSF)?????????·???????????????????????????? Ajax????????150???UI????????ADF Faces Rich Client??????????·?????????ADF Data Visualization Components???????????????? >????:Oracle ADF Faces Rich Client Components >??????? >Oracle ADF Faces Components Hosted Demo >Oracle JDeveloper 11g??????? ¦Oracle WebCenter Framework Oracle ADF?????????·????????Enterprise 2.0???????????????????Oracle WebCenter Framework??? ????????????????????????????????????????????????????????????????????????????? >????:Oracle WebCenter Suite >??????? ??????????????WebLogic Server?????

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• Integrate openid4java to GWT Project

  - by Slyker

  Hi, I created an GWT project in eclipse. Now I tried to implement openId with using the openid4java library. I imported the .jar files via properties--java build path: openid4java-0.9.5.jar lib/*.jar In addition I copied the .jar files into the war/WEB-INF/lib directory. The problem at hand comes up when I call the authenticate() method. Then I get a: HTTP ERROR 500 Problem accessing /openid/openid. Reason: access denied (java.lang.RuntimePermission modifyThreadGroup)Caused by:java.security.AccessControlException: access denied (java.lang.RuntimePermission modifyThreadGroup) at java.security.AccessControlContext.checkPermission(Unknown Source) at java.security.AccessController.checkPermission(Unknown Source) at java.lang.SecurityManager.checkPermission(Unknown Source) at com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkPermission(DevAppServerFactory.java:166) at com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkAccess(DevAppServerFactory.java:191) at java.lang.ThreadGroup.checkAccess(Unknown Source) at java.lang.Thread.init(Unknown Source) at java.lang.Thread.<init>(Unknown Source) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$ReferenceQueueThread.<init>(MultiThreadedHttpConnectionManager.java:1039) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager.storeReferenceToConnection(MultiThreadedHttpConnectionManager.java:164) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager.access$900(MultiThreadedHttpConnectionManager.java:64) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$ConnectionPool.createConnection(MultiThreadedHttpConnectionManager.java:750) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager.doGetConnection(MultiThreadedHttpConnectionManager.java:469) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager.getConnectionWithTimeout(MultiThreadedHttpConnectionManager.java:394) at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:152) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:324) at org.openid4java.util.HttpCache.head(HttpCache.java:296) at org.openid4java.discovery.yadis.YadisResolver.retrieveXrdsLocation(YadisResolver.java:360) at org.openid4java.discovery.yadis.YadisResolver.discover(YadisResolver.java:229) at org.openid4java.discovery.yadis.YadisResolver.discover(YadisResolver.java:221) at org.openid4java.discovery.yadis.YadisResolver.discover(YadisResolver.java:179) at org.openid4java.discovery.Discovery.discover(Discovery.java:134) at org.openid4java.discovery.Discovery.discover(Discovery.java:114) at org.openid4java.consumer.ConsumerManager.discover(ConsumerManager.java:527) at auth.openid.server.OpenIDServlet.authenticate(OpenIDServlet.java:138) at auth.openid.server.OpenIDServlet.doGet(OpenIDServlet.java:101) at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166) at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:51) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:122) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418) at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:70) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:349) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) Here my servlet source: import com.google.gwt.user.client.rpc.RemoteService; import org.openid4java.OpenIDException; import org.openid4java.consumer.ConsumerException; import org.openid4java.consumer.ConsumerManager; import org.openid4java.consumer.VerificationResult; import org.openid4java.discovery.DiscoveryInformation; import org.openid4java.discovery.Identifier; import org.openid4java.message.AuthRequest; import org.openid4java.message.ParameterList; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.text.MessageFormat; import java.util.List; public final class OpenIDServlet extends HttpServlet implements RemoteService { private final ConsumerManager manager; public OpenIDServlet() { try { manager = new ConsumerManager(); } catch (ConsumerException e) { throw new RuntimeException("Error creating consumer manager", e); } } ... private void authenticate(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { final String loginString = request.getParameter(nameParameter); try { // perform discovery on the user-supplied identifier List discoveries = manager.discover(loginString); // attempt to associate with the OpenID provider // and retrieve one service endpoint for authentication DiscoveryInformation discovered = manager.associate(discoveries); // obtain a AuthRequest message to be sent to the OpenID provider AuthRequest authReq = manager.authenticate(discovered, "openid", null); // redirect to OpenID for authentication response.sendRedirect(authReq.getDestinationUrl(true)); } catch (OpenIDException e) { throw new ServletException("Login string probably caused an error. loginString = " + loginString, e); } } My question now is: What could be my fault? Did I make any mistakes in importing the openid4java library? (which?) All other methods in the servlet which do not use the openid4java implementation work fine. Thanks, Andreas

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