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  • Java error starting with "log4j:WARN No appenders could be found for logger" in ZuckerReports SugarC

    - by Tom McDonnell
    Greetings all. I apologise for posting this problem here, but I do so in desperation after receiving no response on the SugarCRM forums. Even if a reader is unfamiliar with ZuckerReports or SugarCRM some general advice on Java may be of use to me. I have installed ZuckerReports v1.12 in SugarCRM 5.5.1. When I attempt to run a report I get the following error message. cmdline: javaw -classpath "custom/ZuckerReports/resources/;custom/ZuckerReports/resources/contact_counts_by_first_name.jasper_files/;modules/ZuckerReports/jasper/ant-1.7.1.jar;modules/ZuckerReports/jasper/antlr-2.7.6.jar;modules/ZuckerReports/jasper/asm-attrs.jar;modules/ZuckerReports/jasper/asm.jar;modules/ZuckerReports/jasper/barbecue-1.5-beta1.jar;modules/ZuckerReports/jasper/barcode4j-2.0.jar;modules/ZuckerReports/jasper/batik-anim.jar;modules/ZuckerReports/jasper/batik-awt-util.jar;modules/ZuckerReports/jasper/batik-bridge.jar;modules/ZuckerReports/jasper/batik-css.jar;modules/ZuckerReports/jasper/batik-dom.jar;modules/ZuckerReports/jasper/batik-ext.jar;modules/ZuckerReports/jasper/batik-gvt.jar;modules/ZuckerReports/jasper/batik-parser.jar;modules/ZuckerReports/jasper/batik-script.jar;modules/ZuckerReports/jasper/batik-svg-dom.jar;modules/ZuckerReports/jasper/batik-svggen.jar;modules/ZuckerReports/jasper/batik-util.jar;modules/ZuckerReports/jasper/batik-xml.jar;modules/ZuckerReports/jasper/bcel-5.2.jar;modules/ZuckerReports/jasper/bsh-2.0b4.jar;modules/ZuckerReports/jasper/castor-1.2.jar;modules/ZuckerReports/jasper/cglib-2.1.jar;modules/ZuckerReports/jasper/cincom-jr-xmla.jar;modules/ZuckerReports/jasper/commons-beanutils-1.8.2.jar;modules/ZuckerReports/jasper/commons-collections-3.2.1.jar;modules/ZuckerReports/jasper/commons-dbcp-1.2.2.jar;modules/ZuckerReports/jasper/commons-digester-1.7.jar;modules/ZuckerReports/jasper/commons-javaflow-20060411.jar;modules/ZuckerReports/jasper/commons-logging-1.1.jar;modules/ZuckerReports/jasper/commons-math-1.0.jar;modules/ZuckerReports/jasper/commons-pool-1.3.jar;modules/ZuckerReports/jasper/commons-vfs-1.0.jar;modules/ZuckerReports/jasper/dom4j-1.6.jar;modules/ZuckerReports/jasper/ehcache-1.1.jar;modules/ZuckerReports/jasper/eigenbase-properties-1.1.0.10924.jar;modules/ZuckerReports/jasper/eigenbase-resgen-1.3.0.11873.jar;modules/ZuckerReports/jasper/eigenbase-xom-1.3.0.11999.jar;modules/ZuckerReports/jasper/ejb3-persistence.jar;modules/ZuckerReports/jasper/groovy-all-1.5.5.jar;modules/ZuckerReports/jasper/hibernate-annotations.jar;modules/ZuckerReports/jasper/hibernate-commons-annotations.jar;modules/ZuckerReports/jasper/hibernate3.jar;modules/ZuckerReports/jasper/hsqldb-1.8.0-10.jar;modules/ZuckerReports/jasper/iText-2.1.0.jar;modules/ZuckerReports/jasper/iTextAsian.jar;modules/ZuckerReports/jasper/jakarta-bcel-20050813.jar;modules/ZuckerReports/jasper/jasperreports-3.7.1.jar;modules/ZuckerReports/jasper/jasperreports-chart-themes-3.6.2.jar;modules/ZuckerReports/jasper/jasperreports-extensions-3.5.3.jar;modules/ZuckerReports/jasper/jasperreports-fonts-3.6.1.jar;modules/ZuckerReports/jasper/javacup.jar;modules/ZuckerReports/jasper/javassist-3.4.GA.jar;modules/ZuckerReports/jasper/jaxen-1.1.1.jar;modules/ZuckerReports/jasper/jcommon-1.0.15.jar;modules/ZuckerReports/jasper/jdt-compiler-3.1.1.jar;modules/ZuckerReports/jasper/jfreechart-1.0.12.jar;modules/ZuckerReports/jasper/jpa.jar;modules/ZuckerReports/jasper/js_activation-1.1.jar;modules/ZuckerReports/jasper/js_axis-1.4patched.jar;modules/ZuckerReports/jasper/js_commons-codec-1.3.jar;modules/ZuckerReports/jasper/js_commons-discovery-0.2.jar;modules/ZuckerReports/jasper/js_commons-httpclient-3.1.jar;modules/ZuckerReports/jasper/js_jasperserver-common-ws-3.5.0.jar;modules/ZuckerReports/jasper/js_jaxrpc.jar;modules/ZuckerReports/jasper/js_mail-1.4.jar;modules/ZuckerReports/jasper/js_saaj-api-1.3.jar;modules/ZuckerReports/jasper/js_wsdl4j-1.5.1.jar;modules/ZuckerReports/jasper/jta.jar;modules/ZuckerReports/jasper/jxl-2.6.jar;modules/ZuckerReports/jasper/log4j-1.2.15.jar;modules/ZuckerReports/jasper/mondrian-3.1.1.12687-Jaspersoft.jar;modules/ZuckerReports/jasper/mysql-connector-java-3.1.11-bin.jar;modules/ZuckerReports/jasper/olap4j-0.9.7.145.jar;modules/ZuckerReports/jasper/png-encoder-1.5.jar;modules/ZuckerReports/jasper/poi-3.2-FINAL-20081019.jar;modules/ZuckerReports/jasper/rex-20080421.jar;modules/ZuckerReports/jasper/rhino-1.7R1.jar;modules/ZuckerReports/jasper/saaj-api-1.3.jar;modules/ZuckerReports/jasper/slf4j-api.jar;modules/ZuckerReports/jasper/slf4j-log4j12.jar;modules/ZuckerReports/jasper/spring.jar;modules/ZuckerReports/jasper/sqleonardo-2007.03.jar;modules/ZuckerReports/jasper/swingx-2007_10_07.jar;modules/ZuckerReports/jasper/xml-apis-ext.jar;modules/ZuckerReports/jasper/xml-apis.jar;modules/ZuckerReports/jasper/zuckerreports-1.0.jar" at.go_mobile.zuckerreports.JasperBatchMain custom/ZuckerReports/temp/aff882c1-684b-d2de-403e-4be367bc2f5f/cmd.properties 2&1 JasperBatchMain :: loading jasper design custom/ZuckerReports/resources/contact_counts_by_first_name.jasper JasperBatchMain :: getParameterValue(REPORT_PARAMETERS_MAP, java.util.Map) = null JasperBatchMain :: getParameterValue(JASPER_REPORT, net.sf.jasperreports.engine.JasperReport) = null JasperBatchMain :: getParameterValue(REPORT_CONNECTION, java.sql.Connection) = null JasperBatchMain :: getParameterValue(REPORT_MAX_COUNT, java.lang.Integer) = null JasperBatchMain :: getParameterValue(REPORT_DATA_SOURCE, net.sf.jasperreports.engine.JRDataSource) = null JasperBatchMain :: getParameterValue(REPORT_SCRIPTLET, net.sf.jasperreports.engine.JRAbstractScriptlet) = null JasperBatchMain :: getParameterValue(REPORT_LOCALE, java.util.Locale) = null JasperBatchMain :: getParameterValue(REPORT_RESOURCE_BUNDLE, java.util.ResourceBundle) = null JasperBatchMain :: getParameterValue(REPORT_TIME_ZONE, java.util.TimeZone) = null JasperBatchMain :: getParameterValue(REPORT_FORMAT_FACTORY, net.sf.jasperreports.engine.util.FormatFactory) = null JasperBatchMain :: getParameterValue(REPORT_CLASS_LOADER, java.lang.ClassLoader) = null JasperBatchMain :: getParameterValue(REPORT_URL_HANDLER_FACTORY, java.net.URLStreamHandlerFactory) = null JasperBatchMain :: getParameterValue(REPORT_FILE_RESOLVER, net.sf.jasperreports.engine.util.FileResolver) = null JasperBatchMain :: getParameterValue(REPORT_VIRTUALIZER, net.sf.jasperreports.engine.JRVirtualizer) = null JasperBatchMain :: getParameterValue(IS_IGNORE_PAGINATION, java.lang.Boolean) = null JasperBatchMain :: getParameterValue(REPORT_TEMPLATES, java.util.Collection) = null log4j:WARN No appenders could be found for logger (net.sf.jasperreports.extensions.ExtensionsEnviron ment). log4j:WARN Please initialize the log4j system properly. Exception in thread "main" java.lang.IllegalArgumentException: Null 'key' argument. at org.jfree.data.DefaultKeyedValues.setValue(Default KeyedValues.java:229) at org.jfree.data.DefaultKeyedValues2D.setValue(Defau ltKeyedValues2D.java:337) at org.jfree.data.DefaultKeyedValues2D.addValue(Defau ltKeyedValues2D.java:303) at org.jfree.data.category.DefaultCategoryDataset.add Value(DefaultCategoryDataset.java:222) at net.sf.jasperreports.charts.fill.JRFillCategoryDat aset.customIncrement(JRFillCategoryDataset.java:14 3) at net.sf.jasperreports.engine.fill.JRFillElementData set.increment(JRFillElementDataset.java:175) at net.sf.jasperreports.engine.fill.JRCalculator.calc ulateVariables(JRCalculator.java:148) at net.sf.jasperreports.engine.fill.JRVerticalFiller. fillDetail(JRVerticalFiller.java:736) at net.sf.jasperreports.engine.fill.JRVerticalFiller. fillReportContent(JRVerticalFiller.java:272) at net.sf.jasperreports.engine.fill.JRVerticalFiller. fillReport(JRVerticalFiller.java:114) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill (JRBaseFiller.java:923) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill (JRBaseFiller.java:826) at net.sf.jasperreports.engine.fill.JRFiller.fillRepo rt(JRFiller.java:59) at at.go_mobile.zuckerreports.JasperBatchMain.main(Ja sperBatchMain.java:126) The same report runs correctly in another SugarCRM installation on the same server. The installation in which the report runs correctly is of the same version, and has the same version of the ZuckerReports module. The report previously ran correctly on both installations. I think that the only changes that have been made on the installation in which the report now does not work since the report was last successfully run are the additions of a few custom fields in the Contacts module. These changes should have nothing to do with ZuckerReports. I have tried uninstalling and reinstalling the ZuckerReports module, but the problem remains. A google search for the warnings given in the error message ie. * log4j:WARN No appenders could be found for logger (net.sf.jasperreports.extensions.ExtensionsEnviron ment). * log4j:WARN Please initialize the log4j system properly. Returns a few links (not specific to ZuckerReports) with tips similar to the following: * log4j.properties or log4j.xml needs to be on the classpath where log4j can find it. I cannot find a file with either of those names anywhere on my server, and yet the report can be run successfully on one of my SugarCRM installations. So I figure log4j must be being configured another way. Can anyone suggest a way to solve this problem? Or explain how I might discover how log4j is configured in ZuckerReports? Or explain how I might compare the working with the non-working installation in order to help find a solution? (I have tried searching for files containing "log4j" in both installations and comparing but all I can find are .jar files (nothing I can read with a text editor), and the .jar files found in each installation appear to be the same.)

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  • Strange Jmeter connection refuse on Tomcat

    - by Tommy
    I tried difference setting in Jmeter and Tomcat. If the Threads number in JMeter is 1~200, Then tomcat is okay. If It is 300, Then after serving few requests, tomcat starts to output errors. Here is the error show in JMeter java.net.ConnectException: Connection refused: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(Unknown Source) at java.net.PlainSocketImpl.connectToAddress(Unknown Source) at java.net.PlainSocketImpl.connect(Unknown Source) at java.net.SocksSocketImpl.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at sun.net.NetworkClient.doConnect(Unknown Source) at sun.net.www.http.HttpClient.openServer(Unknown Source) at sun.net.www.http.HttpClient.openServer(Unknown Source) at sun.net.www.http.HttpClient.<init>(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source) at org.apache.jmeter.protocol.http.sampler.HTTPJavaImpl.sample(HTTPJavaImpl.java:483) at org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:62) at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1018) at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1004) at org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:411) at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:297) at java.lang.Thread.run(Unknown Source) My tomcat server.xml in eclipse <!--The connectors can use a shared executor, you can define one or more named thread pools--> <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="2000" minSpareThreads="250" acceptCount="2000"/> <Connector executor="tomcatThreadPool" URIEncoding="UTF-8" connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443" /> Any idea why this is happening ? How do i check the server.xml is correctly used? It is a JSF2 application if it helps. Thanks in advance.

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  • C# 5.0 Async/Await Demo Code

    - by Paulo Morgado
    I’ve published the sample code I use to demonstrate the use of async/await in C# 5.0. You can find it here. Projects PauloMorgado.AyncDemo.WebServer This project is a simple web server implemented as a console application using Microsoft ASP.NET Web API self hosting and serves an image (with a delay) that is accessed by the other projects. This project has a dependency on Json.NET due to the fact the the Microsoft ASP.NET Web API hosting has a dependency on Json.NET. The application must be run on a command prompt with administrative privileges or a urlacl must be added to allow the use of the following command: netsh http add urlacl url=http://+:9090/ user=machine\username To remove the urlacl, just use the following command: netsh http delete urlacl url=http://+:9090/ PauloMorgado.AsyncDemo.WindowsForms This Windows Forms project contains three regions that must be uncommented one at a time: Sync with WebClient This code retrieves the image through a synchronous call using the WebClient class. Async with WebClient This code retrieves the image through an asynchronous call using the WebClient class. Async with HttpClient with cancelation This code retrieves the image through an asynchronous call with cancelation using the HttpClient class. PauloMorgado.AsyncDemo.Wpf This WPF project contains three regions that must be uncommented one at a time: Sync with WebClient This code retrieves the image through a synchronous call using the WebClient class. Async with WebClient This code retrieves the image through an asynchronous call using the WebClient class. Async with HttpClient with cancelation This code retrieves the image through an asynchronous call with cancelation using the HttpClient class.

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  • How does this method give me a -61 Error?

    - by prestonmarshall
    This is in an application I am using called Mirth, but it appears to be coming from inside an Apache Commons library from a method that checks if something is indeed Base64 encoded or not. All of the docs say the only return is true or false, so how am I getting -61? -61 org.apache.commons.codec.binary.Base64.isBase64(Base64.java:137) org.apache.commons.codec.binary.Base64.discardNonBase64(Base64.java:478) org.apache.commons.codec.binary.Base64.decodeBase64(Base64.java:374) org.apache.commons.codec.binary.Base64.decode(Base64.java:220) com.webreach.mirth.plugins.pdfviewer.PDFViewer.viewAttachments(PDFViewer.java:51) com.webreach.mirth.client.ui.browsers.message.MessageBrowser$16.doInBackground(MessageBrowser.java:1429) com.webreach.mirth.client.ui.browsers.message.MessageBrowser$16.doInBackground(MessageBrowser.java:1426) org.jdesktop.swingworker.SwingWorker$1.call(SwingWorker.java:276) java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) java.util.concurrent.FutureTask.run(FutureTask.java:138) org.jdesktop.swingworker.SwingWorker.run(SwingWorker.java:315) java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) java.lang.Thread.run(Thread.java:637)

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  • Consuming the Amazon S3 service from a Win8 Metro Application

    - by cibrax
    As many of the existing Http APIs for Cloud Services, AWS also provides a set of different platform SDKs for hiding many of complexities present in the APIs. While there is a platform SDK for .NET, which is open source and available in C#, that SDK does not work in Win8 Metro Applications for the changes introduced in WinRT. WinRT offers a complete different set of APIs for doing I/O operations such as doing http calls or using cryptography for signing or encrypting data, two aspects that are absolutely necessary for consuming AWS. All the I/O APIs available as part of WinRT are asynchronous, and uses the TPL model for .NET applications (HTML and JavaScript Metro applications use a model based in promises, which is similar concept).  In the case of S3, the http Authorization header is used for two purposes, authenticating clients and make sure the messages were not altered while they were in transit. For doing that, it uses a signature or hash of the message content and some of the headers using a symmetric key (That's just one of the available mechanisms). Windows Azure for example also uses the same mechanism in many of its APIs. There are three challenges that any developer working for first time in Metro will have to face to consume S3, the new WinRT APIs, the asynchronous nature of them and the complexity introduced for generating the Authorization header. Having said that, I decided to write this post with some of the gotchas I found myself trying to consume this Amazon service. 1. Generating the signature for the Authorization header All the cryptography APIs in WinRT are available under Windows.Security.Cryptography namespace. Many of operations available in these APIs uses the concept of buffers (IBuffer) for representing a chunk of binary data. As you will see in the example below, these buffers are mainly generated with the use of static methods in a WinRT class CryptographicBuffer available as part of the namespace previously mentioned. private string DeriveAuthToken(string resource, string httpMethod, string timestamp) { var stringToSign = string.Format("{0}\n" + "\n" + "\n" + "\n" + "x-amz-date:{1}\n" + "/{2}/", httpMethod, timestamp, resource); var algorithm = MacAlgorithmProvider.OpenAlgorithm("HMAC_SHA1"); var keyMaterial = CryptographicBuffer.CreateFromByteArray(Encoding.UTF8.GetBytes(this.secret)); var hmacKey = algorithm.CreateKey(keyMaterial); var signature = CryptographicEngine.Sign( hmacKey, CryptographicBuffer.CreateFromByteArray(Encoding.UTF8.GetBytes(stringToSign)) ); return CryptographicBuffer.EncodeToBase64String(signature); } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } The algorithm that determines the information or content you need to use for generating the signature is very well described as part of the AWS documentation. In this case, this method is generating a signature required for creating a new bucket. A HmacSha1 hash is computed using a secret or symetric key provided by AWS in the management console. 2. Sending an Http Request to the S3 service WinRT also ships with the System.Net.Http.HttpClient that was first introduced some months ago with ASP.NET Web API. This client provides a rich interface on top the traditional WebHttpRequest class, and also solves some of limitations found in this last one. There are a few things that don't work with a raw WebHttpRequest such as setting the Host header, which is something absolutely required for consuming S3. Also, HttpClient is more friendly for doing unit tests, as it receives a HttpMessageHandler as part of the constructor that can fake to emulate a real http call. This is how the code for consuming the service with HttpClient looks like, public async Task<S3Response> CreateBucket(string name, string region = null, params string[] acl) { var timestamp = string.Format("{0:r}", DateTime.UtcNow); var auth = DeriveAuthToken(name, "PUT", timestamp); var request = new HttpRequestMessage(HttpMethod.Put, "http://s3.amazonaws.com/"); request.Headers.Host = string.Format("{0}.s3.amazonaws.com", name); request.Headers.TryAddWithoutValidation("Authorization", "AWS " + this.key + ":" + auth); request.Headers.Add("x-amz-date", timestamp); var client = new HttpClient(); var response = await client.SendAsync(request); return new S3Response { Succeed = response.StatusCode == HttpStatusCode.OK, Message = (response.Content != null) ? await response.Content.ReadAsStringAsync() : null }; } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } You will notice a few additional things in this code. By default, HttpClient validates the values for some well-know headers, and Authorization is one of them. It won't allow you to set a value with ":" on it, which is something that S3 expects. However, that's not a problem at all, as you can skip the validation by using the TryAddWithoutValidation method. Also, the code is heavily relying on the new async and await keywords to transform all the asynchronous calls into synchronous ones. In case you would want to unit test this code and faking the call to the real S3 service, you should have to modify it to inject a custom HttpMessageHandler into the HttpClient. The following implementation illustrates this concept, In case you would want to unit test this code and faking the call to the real S3 service, you should have to modify it to inject a custom HttpMessageHandler into the HttpClient. The following implementation illustrates this concept, public class FakeHttpMessageHandler : HttpMessageHandler { HttpResponseMessage response; public FakeHttpMessageHandler(HttpResponseMessage response) { this.response = response; } protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) { var tcs = new TaskCompletionSource<HttpResponseMessage>(); tcs.SetResult(response); return tcs.Task; } } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } You can use this handler for injecting any response while you are unit testing the code.

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  • Consuming the Amazon S3 service from a Win8 Metro Application

    - by cibrax
    As many of the existing Http APIs for Cloud Services, AWS also provides a set of different platform SDKs for hiding many of complexities present in the APIs. While there is a platform SDK for .NET, which is open source and available in C#, that SDK does not work in Win8 Metro Applications for the changes introduced in WinRT. WinRT offers a complete different set of APIs for doing I/O operations such as doing http calls or using cryptography for signing or encrypting data, two aspects that are absolutely necessary for consuming AWS. All the I/O APIs available as part of WinRT are asynchronous, and uses the TPL model for .NET applications (HTML and JavaScript Metro applications use a model based in promises, which is similar concept).  In the case of S3, the http Authorization header is used for two purposes, authenticating clients and make sure the messages were not altered while they were in transit. For doing that, it uses a signature or hash of the message content and some of the headers using a symmetric key (That's just one of the available mechanisms). Windows Azure for example also uses the same mechanism in many of its APIs. There are three challenges that any developer working for first time in Metro will have to face to consume S3, the new WinRT APIs, the asynchronous nature of them and the complexity introduced for generating the Authorization header. Having said that, I decided to write this post with some of the gotchas I found myself trying to consume this Amazon service. 1. Generating the signature for the Authorization header All the cryptography APIs in WinRT are available under Windows.Security.Cryptography namespace. Many of operations available in these APIs uses the concept of buffers (IBuffer) for representing a chunk of binary data. As you will see in the example below, these buffers are mainly generated with the use of static methods in a WinRT class CryptographicBuffer available as part of the namespace previously mentioned. private string DeriveAuthToken(string resource, string httpMethod, string timestamp) { var stringToSign = string.Format("{0}\n" + "\n" + "\n" + "\n" + "x-amz-date:{1}\n" + "/{2}/", httpMethod, timestamp, resource); var algorithm = MacAlgorithmProvider.OpenAlgorithm("HMAC_SHA1"); var keyMaterial = CryptographicBuffer.CreateFromByteArray(Encoding.UTF8.GetBytes(this.secret)); var hmacKey = algorithm.CreateKey(keyMaterial); var signature = CryptographicEngine.Sign( hmacKey, CryptographicBuffer.CreateFromByteArray(Encoding.UTF8.GetBytes(stringToSign)) ); return CryptographicBuffer.EncodeToBase64String(signature); } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } The algorithm that determines the information or content you need to use for generating the signature is very well described as part of the AWS documentation. In this case, this method is generating a signature required for creating a new bucket. A HmacSha1 hash is computed using a secret or symetric key provided by AWS in the management console. 2. Sending an Http Request to the S3 service WinRT also ships with the System.Net.Http.HttpClient that was first introduced some months ago with ASP.NET Web API. This client provides a rich interface on top the traditional WebHttpRequest class, and also solves some of limitations found in this last one. There are a few things that don't work with a raw WebHttpRequest such as setting the Host header, which is something absolutely required for consuming S3. Also, HttpClient is more friendly for doing unit tests, as it receives a HttpMessageHandler as part of the constructor that can fake to emulate a real http call. This is how the code for consuming the service with HttpClient looks like, public async Task<S3Response> CreateBucket(string name, string region = null, params string[] acl) { var timestamp = string.Format("{0:r}", DateTime.UtcNow); var auth = DeriveAuthToken(name, "PUT", timestamp); var request = new HttpRequestMessage(HttpMethod.Put, "http://s3.amazonaws.com/"); request.Headers.Host = string.Format("{0}.s3.amazonaws.com", name); request.Headers.TryAddWithoutValidation("Authorization", "AWS " + this.key + ":" + auth); request.Headers.Add("x-amz-date", timestamp); var client = new HttpClient(); var response = await client.SendAsync(request); return new S3Response { Succeed = response.StatusCode == HttpStatusCode.OK, Message = (response.Content != null) ? await response.Content.ReadAsStringAsync() : null }; } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } You will notice a few additional things in this code. By default, HttpClient validates the values for some well-know headers, and Authorization is one of them. It won't allow you to set a value with ":" on it, which is something that S3 expects. However, that's not a problem at all, as you can skip the validation by using the TryAddWithoutValidation method. Also, the code is heavily relying on the new async and await keywords to transform all the asynchronous calls into synchronous ones. In case you would want to unit test this code and faking the call to the real S3 service, you should have to modify it to inject a custom HttpMessageHandler into the HttpClient. The following implementation illustrates this concept, In case you would want to unit test this code and faking the call to the real S3 service, you should have to modify it to inject a custom HttpMessageHandler into the HttpClient. The following implementation illustrates this concept, public class FakeHttpMessageHandler : HttpMessageHandler { HttpResponseMessage response; public FakeHttpMessageHandler(HttpResponseMessage response) { this.response = response; } protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) { var tcs = new TaskCompletionSource<HttpResponseMessage>(); tcs.SetResult(response); return tcs.Task; } } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } You can use this handler for injecting any response while you are unit testing the code.

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  • java.lang.NoClassDefFoundError: javax/servlet/http/HttpServletRequest

    - by pAkY88
    I'm developing a servlet that receives a multipart request with content of multiple files, and I'm using apache commons file upload libraries. When I call parseRequest(request); method servlet throws following exception: GRAVE: Servlet.service() for servlet DiffOntology threw exception java.lang.NoClassDefFoundError: javax/servlet/http/HttpServletRequest at org.apache.commons.fileupload.servlet.ServletRequestContext.getContentType(ServletRequestContext.java:73) at org.apache.commons.fileupload.FileUploadBase$FileItemIteratorImpl.(FileUploadBase.java:882) at org.apache.commons.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:331) at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:349) at org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:126) at DiffOntology.doPost(DiffOntology.java:38) at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:619) I put all libraries in WEB-INF/lib.

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  • C# 5 - asynch method callback with Task.ContinueWIth? [migrated]

    - by user1142433
    I have a method that pulls some HTML via the HttpClient like so: public static HttpClient web = new HttpClient(); public static async Task<string> GetHTMLDataAsync(string url) { string responseBodyAsText = ""; try { HttpResponseMessage response = await web.GetAsync(url); response.EnsureSuccessStatusCode(); responseBodyAsText = await response.Content.ReadAsStringAsync(); } catch (Exception e) { // Error handling } return responseBodyAsText; } I have another method that looks like so: private void HtmlReadComplete(string data) { // do something with the data } I would like to be able to call GetHTMLDataAsync and then have it call HtmlReadComplete on the UI thread when the html has been read. I naively thought this could somehow be done with something that looks like GetHTMLDataAsync(url).ContinueWith(HtmlReadComplete); But, I can't get the syntax correct, nor am I even sure that's the appropriate way to handle it. Thanks in advance!

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  • Download a file with DefaultHTTPClient and preemptive authentication

    - by Nils
    After I had a lot of problems with preemptive authentication , I got it finally working. Now the next problem. I want to get a file with it, but I don't know how. I thought the file data might be in the variable response, but it isn't. Any ideas how this might work? I'm trying it since days without success :( - Basically I'm trying to download an jpeg file, which is on a server protected by prem. auth. // BASIC AUTH /* * ==================================================================== * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. */ //http://svn.apache.org/repos/asf/httpcomponents/httpclient/branches/4.0.x/httpclient/src/examples/org/apache/http/examples/client/ClientPreemptiveBasicAuthentication.java httpclient = new DefaultHttpClient(); httpclient.getCredentialsProvider().setCredentials( new AuthScope(host, port), new UsernamePasswordCredentials(username, password)); // Generate BASIC scheme object and stick it to the local // execution context BasicHttpContext localcontext = new BasicHttpContext(); BasicScheme basicAuth = new BasicScheme(); localcontext.setAttribute("preemptive-auth", basicAuth); //first request interceptor httpclient.addRequestInterceptor(new PreemptiveAuth(), 0); HttpHost targetHost = new HttpHost(host, port, "http"); //HttpGet httpget = new HttpGet("/"); HttpGet httpget = new HttpGet(http.url); System.out.println("executing request" + httpget.getRequestLine()); /// !!! HttpResponse response = httpclient.execute(targetHost, httpget, localcontext); HttpEntity entity = response.getEntity(); System.out.println("----------------------------------------"); System.out.println("+"+response.getStatusLine()+"+"); ...

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  • Why does the the Java VM not recover after "Too many open files" errors?

    - by Michael
    In certain well-understood circumstances, our application will open too many sockets (database connections) and reach the maximum open files that the OS allows. We understand this; we are fixing the issue and also bumping up the limit. What we can't explain is why parts of our application don't recover even after the number of connections abates and we're well within the limit. In this case, it's an application running under Tomcat. When this happens, we first start seeing "Too many open files" errors: SEVERE: Socket accept failed java.net.SocketException: Too many open files at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:390) at java.net.ServerSocket.implAccept(ServerSocket.java:453) at java.net.ServerSocket.accept(ServerSocket.java:421) at org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:61) at org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run(JIoEndpoint.java:310) at java.lang.Thread.run(Thread.java:619) Eventually, we start seeing NoClassDefFoundErrors inside an application thread that's trying to open HTTP connections: java.lang.NoClassDefFoundError: org/apache/commons/httpclient/protocol/ControllerThreadSocketFactory at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:128) at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1349) [...] Caused by: java.lang.ClassNotFoundException: org.apache.commons.httpclient.protocol.ControllerThreadSocketFactory at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) ... 8 more When the errant connections go away, the server starts accepting connections again, and everything seems ok, but we're left with the latter error constantly being spewed to stderr. Although the application typically logs unloaded classes to stdout, I don't see any such logs just before, during or after the "Too many open files" errors. My initial theory was that the Hotspot JVM would unload seemingly unused classes when it encounters "Too many open files," but if so, it doesn't log the fact. I'd also expect it to recover if that were the case. Platform details: Java(TM) SE Runtime Environment (build 1.6.0_14-b08) Java HotSpot(TM) 64-Bit Server VM (build 14.0-b16, mixed mode) Apache Tomcat Version 6.0.18

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  • UnknownHostException while redirecting queries to google and getting results in JSon object

    - by shilpa
    Loading classifier from D:\PROJECT\classifiers\NERDemo\classifiers\ner-eng-ie.crf-3-all2008.ser.gz ... done [2.0 sec]. Original Query was riot in India. Parsing Queries and expanding tokens from the Ontologies.. {locations=[India], events=[riot]} Search query is null Something went wrong... java.net.UnknownHostException: ajax.googleapis.com at java.net.PlainSocketImpl.connect(Unknown Source) at java.net.SocksSocketImpl.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at sun.net.NetworkClient.doConnect(Unknown Source) at sun.net.www.http.HttpClient.openServer(Unknown Source) at sun.net.www.http.HttpClient.openServer(Unknown Source) at sun.net.www.http.HttpClient.<init>(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) at org.girs2.SearchHandler.makeQuery(SearchHandler.java:35) at org.girs2.GIRS.search(GIRS.java:37) at org.girs2.GIRS.main(GIRS.java:62) Exception in thread "main" java.lang.NullPointerException at org.girs2.GIRS.search(GIRS.java:44) at org.girs2.GIRS.main(GIRS.java:62)

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  • make include directive and dependency generation with -MM

    - by Robert S. Barnes
    I want a build rule to be triggered by an include directive if the target of the include is out of date or doesn't exist. Currently the makefile looks like this: program_NAME := wget++ program_H_SRCS := $(wildcard *.h) program_CXX_SRCS := $(wildcard *.cpp) program_CXX_OBJS := ${program_CXX_SRCS:.cpp=.o} program_OBJS := $(program_CXX_OBJS) DEPS = make.deps .PHONY: all clean distclean all: $(program_NAME) $(DEPS) $(program_NAME): $(program_OBJS) $(LINK.cc) $(program_OBJS) -o $(program_NAME) clean: @- $(RM) $(program_NAME) @- $(RM) $(program_OBJS) @- $(RM) make.deps distclean: clean make.deps: $(program_CXX_SRCS) $(program_H_SRCS) $(CXX) $(CPPFLAGS) -MM $(program_CXX_SRCS) > make.deps include $(DEPS) The problem is that it seems like the include directive is executing before the rule to build make.deps which effectively means make either getting no dependency list if make.deps doesn't exist or always getting the make.deps from the previous build and not the current one. For example: $ make clean $ make makefile:32: make.deps: No such file or directory g++ -MM addrCache.cpp connCache.cpp httpClient.cpp wget++.cpp > make.deps g++ -c -o addrCache.o addrCache.cpp g++ -c -o connCache.o connCache.cpp g++ -c -o httpClient.o httpClient.cpp g++ -c -o wget++.o wget++.cpp g++ addrCache.o connCache.o httpClient.o wget++.o -o wget++

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  • java applet won't work

    - by scoobi_doobi
    hey guys, this is homework stuff, but the question is not much about coding. the task is to write a java applet to work on an m-grid server. i have the server running on apache. it has a few sample applets in .jar and .class form. the .class versions work; the .jar versions work on appletviewer, but they break if I submit them as a job to the server with this: load: class examples/pixelcount/PixelCount.class not found. java.lang.ClassNotFoundException: examples.pixelcount.PixelCount.class at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source) at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source) at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.net.ConnectException: Connection refused: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(Unknown Source) at java.net.PlainSocketImpl.connectToAddress(Unknown Source) at java.net.PlainSocketImpl.connect(Unknown Source) at java.net.SocksSocketImpl.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at sun.net.NetworkClient.doConnect(Unknown Source) at sun.net.www.http.HttpClient.openServer(Unknown Source) at sun.net.www.http.HttpClient.openServer(Unknown Source) at sun.net.www.http.HttpClient.<init>(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) at java.net.HttpURLConnection.getResponseCode(Unknown Source) at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source) at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source) at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) ... 7 more Exception: java.lang.ClassNotFoundException: examples.pixelcount.PixelCount.class I'm not really sure where exactly is the problem in here, given that they work on appletviewer. any help would be appreciated.. EDIT: don't know if I wrote it clearly. by ".class version" i refer to html file with this content: <applet height="300" width="450" code="examples/pixelcount/PixelCount.class"></applet> and ".jar" with this content: <applet height="300" width="450" archive="PixelCount.jar" code="examples.pixelcount.PixelCount.class"></applet>

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  • HttpURLConnection getting locked

    - by Nayn
    Hi, I have a thread running under tomcat which creates a HttpUrlConnection and reads it through BufferedInputStream. After fetching data for some urls, it stalls. I got the jstack of the process which says HttpUrlConnection is locked and BufferedInputStream is also locked. "http-8080-1" daemon prio=10 tid=0x08683400 nid=0x79c9 runnable [0x8f618000] java.lang.Thread.State: RUNNABLE at java.net.SocketInputStream.socketRead0(Native Method) at java.net.SocketInputStream.read(SocketInputStream.java:129) at java.io.BufferedInputStream.fill(BufferedInputStream.java:218) at java.io.BufferedInputStream.read1(BufferedInputStream.java:258) at java.io.BufferedInputStream.read(BufferedInputStream.java:317) - locked <0x956ef8c0> (a java.io.BufferedInputStream) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:687) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:632) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1072) - locked <0x956ef910> (a sun.net.www.protocol.http.HttpURLConnection) Could somebody help here. Thanks

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  • Language Translation API

    - by kandarp
    How can i convert language in my Java? Is there any API exist, which convert any language to any other language? I am using Google Translate API, but it giving me below exception. java.lang.Exception: [google-api-translate-java] Error retrieving translation. at com.google.api.GoogleAPI.retrieveJSON(GoogleAPI.java:123) at com.google.api.translate.Translate.execute(Translate.java:69) at com.nextenders.client.beans.ruleengine.RuleEngineTest.main(RuleEngineTest.java:27) Caused by: java.net.ConnectException: Connection timed out: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(Unknown Source) at java.net.PlainSocketImpl.connectToAddress(Unknown Source) at java.net.PlainSocketImpl.connect(Unknown Source) at java.net.SocksSocketImpl.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at sun.net.NetworkClient.doConnect(Unknown Source) at sun.net.www.http.HttpClient.openServer(Unknown Source) at sun.net.www.http.HttpClient.openServer(Unknown Source) at sun.net.www.http.HttpClient.(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source) null at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(Unknown Source) at com.google.api.GoogleAPI.retrieveJSON(GoogleAPI.java:107) ... 2 more If anybody knows any API for translation, please tell me.

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  • Connecting to a web server over HTTP, code snippet

    - by Emanuil
    I'v got the following piece of code: try { HttpClient httpClient = new DefaultHttpClient(); HttpPost httpPost = new HttpPost("http://www.flashstall.com/json.txt"); HttpResponse httpResponse = httpClient.execute(httpPost); } catch (Exception e) { Log.e("m40", "Error in http connection " + e.toString()); } When I run it it logs "Error in http connection java.net.UnkownHostException: www.flashstall.com". What am I doing wrong?

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  • Castle Windsor Dependency Injection with MVC4

    - by Renso
    Problem:Installed MVC4 on my local and ran a MVC3 app and got an error where Castle Windsor was unable to resolve any controllers' constructor injections. It failed with "No component for supporting the service....".As soon as I uninstall MVC4 beta, the problem vanishes like magic?!I also tried to upgrade to NHibernate 3 and Castle and Castle Windsor to version 3 (from version 2), but since I use Rhino Commons, that is not possible as the Rhino Commons project looks like is no longer supported and requests to upgrade it to work with NHibernate version 3 two years ago has gone unanswered. The problem is that Rhino Commons (the older version) references a method in Castle version 2 that has been depreciated in version 3: "CreateContainer("windsor.boo")' threw an exception of type 'System.MissingMethodException."Hope this helps anyone else who runs into this issue. Btw I used NuGet package manager to install the correct packages so I know that is not the issue.

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  • How to upgrade all dependencies to a specific version

    - by Calm Storm
    Hi, I tried doing a mvn dependency:tree and I get a tree of dependencies. My question is, My project depends on many modules which internally depends on many spring artifacts. There are a few version clashes. I want to upgrade all spring related libraries to say the latest one (2.6.x or above). What is the preferred way to do this? Should I declare all the deps spring-context, spring-support (and 10 other artifacts) in my pom.xml and point them to 2.6.x ? Is there any other better method ? [INFO] +- com.xxxx:yyy-jar:jar:1.0-SNAPSHOT:compile [INFO] | +- com.xxxx:zzz-commons:jar:1.0-SNAPSHOT:compile [INFO] | | +- org.springframework:spring-dao:jar:2.0.7:compile [INFO] | | +- org.springframework:spring-jdbc:jar:2.0.7:compile [INFO] | | +- org.springframework:spring-web:jar:2.0.7:compile [INFO] | | +- org.springframework:spring-support:jar:2.0.7:compile [INFO] | | +- net.sf.ehcache:ehcache:jar:1.2:compile [INFO] | | +- commons-collections:commons-collections:jar:3.2:compile [INFO] | | +- aspectj:aspectjweaver:jar:1.5.3:compile [INFO] | | +- betex-commons:betex-commons:jar:5.5.1-2:compile [INFO] | | \- javax.servlet:servlet-api:jar:2.4:compile [INFO] | +- org.springframework:spring-beans:jar:2.0.7:compile [INFO] | +- org.springframework:spring-jmx:jar:2.0.7:compile [INFO] | +- org.springframework:spring-remoting:jar:2.0.7:compile [INFO] | +- org.apache.cxf:cxf-rt-core:jar:2.0.2-incubator:compile [INFO] | | +- org.apache.cxf:cxf-api:jar:2.0.2-incubator:compile [INFO] | | | +- org.apache.geronimo.specs:geronimo-activation_1.1_spec:jar:1.0-M1:compile [INFO] | | | +- org.codehaus.woodstox:wstx-asl:jar:3.2.1:compile [INFO] | | | +- org.apache.neethi:neethi:jar:2.0.2:compile [INFO] | | | \- org.apache.cxf:cxf-common-schemas:jar:2.0.2-incubator:compile UPDATE : I have removed the extra question about "\-" so my question is now what the subject asks for :)

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  • What does the \- mean in the mvn dependency tree output

    - by Calm Storm
    Hi, I tried doing a mvn dependency:tree and I get a tree of dependencies. The output looks like below. I want to know what is the "-" symbol that is shown at times and the "+-" symbol for other dependencies (it doesnt seem to be the scope) My actual question is, My project depends on many modules which internally depends on many spring artifacts. There are a few version clashes. I want to upgrade all spring related libraries to say the latest one (2.6.x or above). What is the preferred way to do this? Should I declare all the deps spring-context, spring-support (and 10 other artifacts) in my pom.xml and point them to 2.6.x ? Is there any other better method ? [INFO] +- com.xxxx:yyy-jar:jar:1.0-SNAPSHOT:compile [INFO] | +- com.xxxx:zzz-commons:jar:1.0-SNAPSHOT:compile [INFO] | | +- org.springframework:spring-dao:jar:2.0.7:compile [INFO] | | +- org.springframework:spring-jdbc:jar:2.0.7:compile [INFO] | | +- org.springframework:spring-web:jar:2.0.7:compile [INFO] | | +- org.springframework:spring-support:jar:2.0.7:compile [INFO] | | +- net.sf.ehcache:ehcache:jar:1.2:compile [INFO] | | +- commons-collections:commons-collections:jar:3.2:compile [INFO] | | +- aspectj:aspectjweaver:jar:1.5.3:compile [INFO] | | +- betex-commons:betex-commons:jar:5.5.1-2:compile [INFO] | | \- javax.servlet:servlet-api:jar:2.4:compile [INFO] | +- org.springframework:spring-beans:jar:2.0.7:compile [INFO] | +- org.springframework:spring-jmx:jar:2.0.7:compile [INFO] | +- org.springframework:spring-remoting:jar:2.0.7:compile [INFO] | +- org.apache.cxf:cxf-rt-core:jar:2.0.2-incubator:compile [INFO] | | +- org.apache.cxf:cxf-api:jar:2.0.2-incubator:compile [INFO] | | | +- org.apache.geronimo.specs:geronimo-activation_1.1_spec:jar:1.0-M1:compile [INFO] | | | +- org.codehaus.woodstox:wstx-asl:jar:3.2.1:compile [INFO] | | | +- org.apache.neethi:neethi:jar:2.0.2:compile [INFO] | | | \- org.apache.cxf:cxf-common-schemas:jar:2.0.2-incubator:compile

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  • Blocking on DBCP connection pool (open and close connnection). Is database connection pooling in OpenEJB pluggable?

    - by topchef
    We use OpenEJB on Tomcat (used to run on JBoss, Weblogic, etc.). While running load tests we experience significant performance problems with handling JMS messages (queues). Problem was localized to blocking on database connection pool getting or releasing connection to the pool. Blocking prevented concurrent MDB instances (threads) from running hence performance suffered 10-fold and worse. The same code used to run on application servers (with their respective connection pool implementations) with no blocking at all. Example of thread blocked: Name: JMS Resource Adapter-worker-23 State: BLOCKED on org.apache.commons.pool.impl.GenericObjectPool@1ea6b4a owned by: JMS Resource Adapter-worker-19 Total blocked: 18,426 Total waited: 0 Stack trace: org.apache.commons.pool.impl.GenericObjectPool.returnObject(GenericObjectPool.java:916) org.apache.commons.dbcp.PoolableConnection.close(PoolableConnection.java:91) - locked org.apache.commons.dbcp.PoolableConnection@1bcba8 org.apache.commons.dbcp.managed.ManagedConnection.close(ManagedConnection.java:147) com.xxxxx.persistence.DbHelper.closeConnection(DbHelper.java:290) .... Couple of questions. I am almost certain that some transactional attributes and properties contribute to this blocking, but MDBs are defined as non-transactional (we use both annotations and ejb-jar.xml). Some EJBs do use container-managed transactions though (and we can observe blocking there as well). Are there any DBCP configurations that may fix blocking? Is DBCP connection pool implementation replaceable in OpenEJB? How easy (difficult) to replace it with another library? Just in case this is how we define data source in OpenEJB (openejb.xml): <Resource id="MyDataSource" type="DataSource"> JdbcDriver oracle.jdbc.driver.OracleDriver JdbcUrl ${oracle.jdbc} UserName ${oracle.user} Password ${oracle.password} JtaManaged true InitialSize 5 MaxActive 30 ValidationQuery SELECT 1 FROM DUAL TestOnBorrow true </Resource>

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  • Rich faces3.3.2 is not working in WebSphear 7

    - by palakolanusrinu
    Hi, I'm new to this rich faces and JSF i have developed one sample app and its working fine in tomcat6 now same app i have moved to WebSphear7 here i'm facing the problem. Exception on console: Unable to locate the tag library for uri //richfaces.org/rich" List of jars in build path: Commons-beanutils-1.8.3.jar commons-codec-1.4.jar commons-collections-3.2.1.jar commons-digester-2.0.jar commons-discovery-0.4.jar conmmons-logging.jar jsf-api.jar jsf-impl.jar jstl-1.2.jar jstl-api-1.2.jar jst-impl-1.2.jar richfaces-api-3.3.2.SR1.jar richfaces-impl-3.3.2.SR1.jar richfaces-ui-3.3.2.SR1.jar Web.xml is http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5" bbh index.html index.htm index.jsp default.html default.htm default.jsp Faces Servlet javax.faces.webapp.FacesServlet 1 Faces Servlet *.jsf State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2 javax.faces.STATE_SAVING_METHOD client javax.servlet.jsp.jstl.fmt.localizationContext resources.application com.sun.faces.config.ConfigureListener Faces Servlet *.faces <context-param> <param-name>org.richfaces.SKIN</param-name> <param-value>blueSky</param-value> </context-param> <filter> <display-name>RichFaces Filter</display-name> <filter-name>richfaces</filter-name> <filter-class>org.ajax4jsf.Filter</filter-class> <init-param> <param-name>createTempFiles</param-name> true maxRequestSize 2000000 richfaces Faces Servlet REQUEST FORWARD INCLUDE My JSP including the tag libs are like <%@taglib uri="http://java.sun.com/jsf/core" prefix="f"% <%@taglib uri="http://java.sun.com/jsf/html" prefix="h"% <%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"% <%@ taglib uri="http://richfaces.org/a4j" prefix="a4j"% <%@ taglib uri="http://richfaces.org/rich" prefix="rich"% Please Help me and thx in advance

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  • assamble.xml with dependencies

    - by Blanca
    Hi! I would like to generate a .jar applicatio from a project made in Maven. am working in Eclipse, and I made: run as/Maven assembly:assembly This is the error message: [ERROR] Failed to execute goal org.apache.maven.plugins:maven-assembly-plugin:2.2-beta-4:assembly (default-cli) on project FeelIndexer: Error reading assemblies: No assembly descriptors found. - [Help 1] This is my assamble.xml exe jar false true runtime commons-lang:commons-lang commons-cli:commons-cli target/classes I think i have to include something else for adding the dependencies of muy project, but i don't know how to do it!! suggestions?? thank you!

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  • file upload in JSF using myfaces component

    - by prt
    Hi, all i am creating a JSF application where file uploading functionality is required.I have added all the required jar files in my /WEB-INF/lib folder. jsf-api.jar jsf-impl.jar jstl.jar standard.jar myfaces-extensions.jar commons-collections.jar commons-digester.jar commons-beanutils.jar commons-logging.jar commons-fileupload-1.0.jar but still when trying to deploy the application on apache 6.0.29 i am getting the following error. org.apache.catalina.core.StandardContext addApplicationListener INFO: The listener "com.sun.faces.config.ConfigureListener" is already configured for this context. The duplicate definition has been ignored. org.apache.catalina.core.StandardContext start SEVERE: Error listenerStart PM org.apache.catalina.core.StandardContext start SEVERE: Context [/jsfApplication] startup failed due to previous errors org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc The web application [/jsfApplication] registered the JBDC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered. org.apache.catalina.loader.WebappClassLoader clearReferencesThreads SEVERE: The web application [/jsfApplication] appears to have started a thread named [Timer-0] but has failed to stop it. This is very likely to create a memory leak. org.apache.catalina.loader.WebappClassLoader clearReferencesThreads SEVERE: The web application [/jsfApplication] appears to have started a thread named [MySQL Statement Cancellation Timer] but has failed to stop it. This is very likely to create a memory leak. log4j:ERROR LogMananger.repositorySelector was null likely due to error in class reloading, using NOPLoggerRepository. i am using also using hibernate and spring framework for this application. please help. thanks,

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  • Maven giving error Missing artifact

    - by newbie
    I'm adding Google App Engine, Spring and Tiles2 to same project, for some reason Apache Maven gives this error. Missing artifact org.apache.commons:com.springsource.org.apache.commons.collections:jar:3.2.1:compile here is my pom.xml where i include dependency: <dependency> <groupId>org.apache.commons</groupId> <artifactId>com.springsource.org.apache.commons.collections</artifactId> <version>3.2.1</version> <type>pom</type> </dependency>

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  • Adding Apache common dependency to Play Framework 2.0

    - by Mooh
    i want to import org.apache.commons.io but i'm getting this error: [info] Compiling 1 Java source to /home/ghost/Bureau/app/play-2.0.1/waf/target/scala-2.9.1/classes... [error] /home/ghost/Bureau/app/play-2.0.1/waf/app/controllers/Application.java:9: error: package org.apache.commons.io does not exist [error] import org.apache.commons.io.*; [error] ^ [error] /home/ghost/Bureau/app/play-2.0.1/waf/app/controllers/Application.java:41: error: cannot find symbol [error] FileUtils.copyFile(file, destinationFile); [error] ^ [error] symbol: variable FileUtils [error] location: class Application [error] 2 errors [error] {file:/home/ghost/Bureau/app/play-2.0.1/waf/}waf/compile:compile: javac returned nonzero exit code [error] application - Play can't find package org.apache.commons.io . How i can i add it as a dependency ?

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