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  • Are application servers necessary? Advantages of using one? (And other JEE questions)

    - by Mike
    Apologies for the long question.. there seems to be other similar questions on here but none really clear up my confusion. I'd be really grateful if someone could confirm or correct my understanding: Java Enterprise Edition is a set of APIs for building enterprise applications, which take away the burden of developing parts of the system that aren't actually features of the application you are trying to build (i.e. messaging, transactions etc). To do this, you can use an application server, which implements these APIs. So you could use JBoss, Glassfish, WebSphere, WebLogic etc which would provide your application with these enterprise services. However, there are many other implementations of these individual services available such as ActiveMQ for messaging, Hibernate for persistence, OpenEJB etc. You can download these implementations as Java libraries and include them in your application, and use the services they provide in a similar way to using the services provided by an application server. So if my understanding is correct, my questions are: I've read a lot of places that application servers are necessary for JEE features like EJB, but can't you just use an implementation such as OpenEJB and not need an application server at all? Are there any features that an application server provides which you cannot get from another source? Why would/wouldn't I choose an application server over a custom stack such as Tomcat, OpenEJB, ActiveMQ, and Hibernate? Is Spring a complete alternative to JEE? Does it ever require an application server or always just a servlet container? Why would someone choose Spring over JEE? Any help would be much appreciated!

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  • Ability to switch Persistence Unit dynamically within the application (JPA)

    - by MVK
    My application data access layer is built using Spring and EclipseLink and I am currently trying to implement the following feature - Ability to switch the current/active persistence unit dynamically for a user. I tried various options and finally ended up doing the following. In the persistence.xml, declare multiple PUs. Create a class with as many EntityManagerFactory attributes as there are PUs defined. This will act as a factory and return the appropriate EntityManager based on my logic public class MyEntityManagerFactory { @PersistenceUnit(unitName="PU_1") private EntityManagerFactory emf1; @PersistenceUnit(unitName="PU_2") private EntityManagerFactory emf2; public EntityManager getEntityManager(int releaseId) { // Logic goes here to return the appropriate entityManeger } } My spring-beans xml looks like this.. <!-- First persistence unit --> <bean class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" id="emFactory1"> <property name="persistenceUnitName" value="PU_1" /> </bean> <bean class="org.springframework.orm.jpa.JpaTransactionManager" id="transactionManager1"> <property name="entityManagerFactory" ref="emFactory1"/> </bean> <tx:annotation-driven transaction-manager="transactionManager1"/> The above section is repeated for the second PU (with names like emFactory2, transactionManager2 etc). I am a JPA newbie and I know that this is not the best solution. I appreciate any assistance in implementing this requirement in a better/elegant way! Thanks!

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  • How to find all initializations of instance variables in a Java package?

    - by Hank Gay
    I'm in the midst of converting a legacy app to Spring. As part of the transition, we're converting our service classes from an "instantiate new ones whenever you need one" style to a Springleton style, so I need a way to make sure they don't have any state. I'm comfortable on the *nix command-line, and I have access to IntelliJ (this strikes me as a good fit for Structural Search and Replace, if I could figure out how to use it), and I could track down an Eclipse install, if that would help. I just want to make absolutely sure I've found all the possible problems. UPDATE: Sorry for the confusion. I don't have a problem finding places where the old constructor was being called. What I'm looking for is a "bullet-proof" why to search all 100+ service classes for any sort of internal state. The most obvious one I could think of (and the only one I've really found so far) is cases where we use memoization in the classes, so they have instance variables that get initialized internally instead of via Spring. This means that when the same Springleton gets used for different requests, data can leak between them. Thanks.

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  • What would be a better implementation of shared variable among subclass

    - by Churk
    So currently I have a spring unit testing application. And it requires me to get a session cookie from a foreign authentication source. Problem what that is, this authentication process is fairly expensive and time consuming, and I am trying to create a structure where I am authenticate once, by any subclass, and any subsequent subclass is created, it will reuse this session cookie without hitting the authentication process again. My problem right now is, the static cookie is null each time another subclass is created. And I been reading that using static as a global variable is a bad idea, but I couldn't think of another way to do this because of Spring framework setting things during run time and how I would set the cookie so that all other classes can use it. Another piece of information. The variable is being use, but is change able during run time. It is not a single user being signed in and used across the board. But more like a Sub1 would call login, and we have a cookie. Then multiple test will be using that login until SubX will come in and say, I am using different credential, so I need to login as something else. And repeats. Here is a outline of my code: public class Parent implements InitializingBean { protected static String BASE_URL; public static Cookie cookie; ... All default InitializingBean methods ... afterPropertiesSet() { cookie = // login process returns a cookie } } public class Sub1 extends Parent { @resource public String baseURL; @PostConstruct public void init() { // set parents with my baseURL; BASE_URL = baseURL; } public void doSomething() { // Do something with cookie, because it should have been set by parent class } } public class Sub2 extends Parent { @resource public String baseURL; @PostConstruct public void init() { // set parents with my baseURL; BASE_URL = baseURL; } public void doSomethingElse() { // Do something with cookie, because it should have been set by parent class } }

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  • How to model and handle presentation DTO's to abstract from complicated domain model?

    - by arrages
    Hi I am developing an application that needs to work with a complex domain model using Hibernate. This application uses Spring MVC and using the domain objects in the presentation layer is very messy so I think I should use DTO's that go to and from my service layer so that these match what I need in my views. Now lets assume I have a CarLease entity whose properties are not simple java primitives but it's composed with other entities like Make, Model, etc public class CarLease { private Make make; Private Model model; . . . } most properties are in this fashion and they are selectable using drop down selects on the jsp view, each will post back an ID to the controller. Now considering some standard use cases: create, edit, display How would you go about modeling the presentation DTO's to be used as form backing objects and communication between presentation and service layers?? Would you create a different DTO for each case (create, edit, display), would you make DTO's for the complex attributes? if so where would you translate the ID to entity? how and where would you handle validation, DTO/Domain assembly, what would you return from service layer methods? (create, edit, get) As you can see, I now I will benefit by separating my view from the domain objects (very complex with lots of stuff I don't need.) but I am having a hard time finding any real world examples and best practices for this. I need some architecture guidance from top to bottom, please keep in mind I will use Spring MVC in case that may leverage on your anwser. thanks in advance.

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  • Job queueing and execute Mechanism

    - by Calm Storm
    In my webservice all method calls submits jobs to a queue. Basically these operations take long time to execute, so all these operations submit a Job to a queue and return a status saying "Submitted". Then the client keeps polling using another service method to check for the status of the job. Presently, what I do is create my own Queue, Job classes that are Serializable and persist these jobs (i.e, their serialized byte stream format) into the database. So an UpdateLogistics operation just queues up a "UpdateLogisticsJob" to the queue and returns. I have written my own JobExecutor which wakes up every N seconds, scans the database table for any existing jobs, and executes them. Note the jobs have to persisted because these jobs have to survive app-server crashes. This was done a long time ago, and I used bespoke classes for my Queues, Jobs, Executors etc. But now, I would like to know has someone done something similar before? In particular, Are there frameworks available for this ? Something in Spring/Apache etc Any framework that is easy to adapt/debug and plays well along with libraries like Spring will be great.

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  • What is the meaning of @ModelAttribute annotation at method argument level?

    - by beemaster
    Spring 3 reference teaches us: When you place it on a method parameter, @ModelAttribute maps a model attribute to the specific, annotated method parameter I don't understand this magic spell, because i sure that model object's alias (key value if using ModelMap as return type) passed to the View after executing of the request handler method. Therefore when request handler method executes the model object's name can't be mapped to the method parameter. To solve this contradiction i went to stackoverflow and found this detailed example. The author of example said: // The "personAttribute" model has been passed to the controller from the JSP It seems, he is charmed by Spring reference... To dispel the charms i deployed his sample app in my environment and cruelly cut @ModelAttribute annotation from method MainController.saveEdit. As result the application works without any changes! So i conclude: the @ModelAttribute annotation is not needed to pass web form's field values to the argument's fields. Then i stuck to the question: what is the mean of @ModelAttribute annotation? If the only mean is to set alias for model object in View, then why this way better than explicitly adding of object to ModelMap?

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  • best way to avoid sql injection

    - by aauser
    I got similar domain model 1) User. Every user got many cities. @OneToMany(targetEntity=adv.domain.City.class...) 2) City. Every city got many districts @OneToMany(targetEntity=adv.domain.Distinct.class) 3) Distintc My goal is to delete distinct when user press delete button in browser. After that controller get id of distinct and pass it to bussiness layer. Where method DistinctService.deleteDistinct(Long distinctId) should delegate deliting to DAO layer. So my question is where to put security restrictions and what is the best way to accomplish it. I want to be sure that i delete distinct of the real user, that is the real owner of city, and city is the real owner of distinct. So nobody exept the owner can't delete ditinct using simple url like localhost/deleteDistinct/5. I can get user from httpSession in my controller and pass it to bussiness layer. After that i can get all cities of this user and itrate over them to be sure, that of the citie.id == distinct.city_id and then delete distinct. But it's rather ridiculous in my opinion. Also i can write sql query like this ... delete from t_distinct where t_distinct.city_id in (select t_city.id from t_city left join t_user on t_user.id = t_city.owner_id where t_user.id = ?) and t_distinct.id = ? So what is the best practice to add restrictions like this. I'm using Hibernate, Spring, Spring MVC by the way.. Thank you

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  • Choose 'better' or more familiar technologies for a new project?

    - by John
    I am looking to start work on a brand-new project, something I've been thinking about for a while as my first independent sellable project. It's broadly speaking a web-based service application, and my first choice, server-language is quite easy... I know Java pretty well from working on Java web-apps in the past. However my experience doing web-apps involved JSP, Servlets and JSTL... I know the ideas behind newer technologies like Hibernate/Spring but have never used them. So we wrote our own DAOs, handled AJAX by writing special mini-JSP pages that generated XML/JSON pages, etc. I'm not hugely into the idea that Spring/Hibernate are the 'only' or 'right' way to do any Java web-project, but they are widely used. On the other hand, not only would trying to learn these increase initial development time, but I'd be using my learning attempts to build a production system. I remember one of Joel's early articles said (I'll paraphrase since I can't find it) "regardless what's cool, always use the technologies that the lead developer (or dev team?) knows best" I wondered what people thought about that? ps: should this be CW?

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  • How to set the ActiveMQ redeliveryPolicy on a queue?

    - by edbras
    How do I set the redeliveryPolicy in ActiveMQ on a Queue? 1) In the doc, see: activeMQ Redelivery, the explain that you should set it on the ConnectionFactory or Connection. But I want to use different value's for different Queue's. 2) Apart from that, I don't seem to get it work. Setting it on the connection factory in Spring (I am using activemq 5.4.2. with Spring 3.0) like this don't seem to have any effect: <amq:connectionFactory id="amqConnectionFactory" brokerURL="${jms.factory.url}" > <amq:properties> <amq:redeliveryPolicy maximumRedeliveries="6" initialRedeliveryDelay="15000" useExponentialBackOff="true" backOffMultiplier="5"/> </amq:properties> </amq:connectionFactory> I also tried to set it as property on the defined Queue, but that also seem to be ignored as the redelivery occurs sooner that the defined values: <amq:queue id="jmsQueueDeclarationSnd" physicalName="${jms.queue.declaration.snd}" > <amq:properties> <amq:redeliveryPolicy maximumRedeliveries="6" initialRedeliveryDelay="15000" useExponentialBackOff="true" backOffMultiplier="5"/> </amq:properties> </amq:queue> Thanks

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  • Error using maven profiles

    - by user3127896
    I've added two profiles to my application and that how it looks: <profiles> <profile> <id>dev</id> <properties> <db.username>root</db.username> <db.password>root</db.password> <db.connectionURL>localhost:3306</db.connectionURL> <db.driverClass>com.mysql.jdbc.Driver</db.driverClass> </properties> </profile> <profile> <id>prod</id> <properties> <db.username>prodroot</db.username> <db.password>prodpass</db.password> <db.connectionURL>localhost:3306</db.connectionURL> <db.driverClass>com.mysql.jdbc.Driver</db.driverClass> </properties> </profile> </profiles> In my jdbc.properties file i changed values like this: jdbc.driverClassName=${db.driverClass} jdbc.dialect=org.hibernate.dialect.MySQLDialect jdbc.databaseurl=jdbc:mysql://${db.connectionURL}/dbname jdbc.username=${db.username} jdbc.password=${db.password} And here's bean from spring-container.xml <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" p:driverClassName="${jdbc.driverClassName}" p:url="${jdbc.databaseurl}" p:username="${jdbc.username}" p:password="${jdbc.password}" /> When i try to deploy my application i got following error: SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'dataSource' defined in ServletContext resource [/WEB-INF/spring-servlet.xml]: Could not resolve placeholder 'db.driverClass' Structure of project: Any ideas what i'm doing wrong? Thanks in advance!

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  • What is the mean of @ModelAttribute annotation at method argument level?

    - by beemaster
    Spring 3 reference teaches us: When you place it on a method parameter, @ModelAttribute maps a model attribute to the specific, annotated method parameter I don't understand this magic spell, because i sure that model object's alias (key value if using ModelMap as return type) passed to the View after executing of the request handler method. Therefore when request handler method executes the model object's name can't be mapped to the method parameter. To solve this contradiction i went to stackoverflow and found this detailed example. The author of example said: // The "personAttribute" model has been passed to the controller from the JSP It seems, he is charmed by Spring reference... To dispel the charms i deployed his sample app in my environment and cruelly cut @ModelAttribute annotation from method MainController.saveEdit. As result the application works without any changes! So i conclude: the @ModelAttribute annotation is not needed to pass web form's field values to the argument's fields. Then i stuck to the question: what is the mean of @ModelAttribute annotation? If the only mean is to set alias for model object in View, then why this way better than explicitly adding of object to ModelMap?

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  • why jQuery.parseJSON is not a function?

    - by Pandiya Chendur
    I use the following jquery statements and i am getting the error, jQuery.parseJSON is not a function my function is, function Iteratejsondata() {var HfJsonValue = { "Table": [{ "Emp_Id": "3", "Identity_No": "", "Emp_Name": "Jerome", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Supervisior", "Desig_Description": "Supervisior of the Construction", "SalaryBasis": "Monthly", "FixedSalary": "25000.00" }, { "Emp_Id": "4", "Identity_No": "", "Emp_Name": "Mohan", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Acc ", "Desig_Description": "Accountant", "SalaryBasis": "Monthly", "FixedSalary": "200.00" }, { "Emp_Id": "5", "Identity_No": "", "Emp_Name": "Murugan", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Mason", "Desig_Description": "Mason", "SalaryBasis": "Weekly", "FixedSalary": "150.00" }, { "Emp_Id": "6", "Identity_No": "", "Emp_Name": "Ram", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Mason", "Desig_Description": "Mason", "SalaryBasis": "Weekly", "FixedSalary": "120.00" }, { "Emp_Id": "7", "Identity_No": "", "Emp_Name": "Raja", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Mason", "Desig_Description": "Mason", "SalaryBasis": "Weekly", "FixedSalary": "135.00" }, { "Emp_Id": "8", "Identity_No": "", "Emp_Name": "Raja kumar", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Mason Helper", "Desig_Description": "Mason Helper", "SalaryBasis": "Weekly", "FixedSalary": "105.00" }, { "Emp_Id": "9", "Identity_No": "", "Emp_Name": "Lakshmi", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Mason Helper", "Desig_Description": "Mason Helper", "SalaryBasis": "Weekly", "FixedSalary": "100.00" }, { "Emp_Id": "10", "Identity_No": "", "Emp_Name": "Palani", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Carpenter", "Desig_Description": "Carpenter", "SalaryBasis": "Weekly", "FixedSalary": "200.00" }, { "Emp_Id": "11", "Identity_No": "", "Emp_Name": "Annamalai", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Carpenter", "Desig_Description": "Carpenter", "SalaryBasis": "Weekly", "FixedSalary": "220.00" }, { "Emp_Id": "12", "Identity_No": "", "Emp_Name": "David", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Steel Fixer", "Desig_Description": "Steel Fixer", "SalaryBasis": "Weekly", "FixedSalary": "220.00" }, { "Emp_Id": "13", "Identity_No": "", "Emp_Name": "Chandru", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Steel Fixer", "Desig_Description": "Steel Fixer", "SalaryBasis": "Weekly", "FixedSalary": "220.00" }, { "Emp_Id": "14", "Identity_No": "", "Emp_Name": "Mani", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Steel Helper", "Desig_Description": "Steel Helper", "SalaryBasis": "Weekly", "FixedSalary": "175.00" }, { "Emp_Id": "15", "Identity_No": "", "Emp_Name": "Karthik", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Wood Fixer", "Desig_Description": "Wood Fixer", "SalaryBasis": "Weekly", "FixedSalary": "195.00" }, { "Emp_Id": "16", "Identity_No": "", "Emp_Name": "Bala", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Wood Fixer", "Desig_Description": "Wood Fixer", "SalaryBasis": "Weekly", "FixedSalary": "185.00" }, { "Emp_Id": "17", "Identity_No": "", "Emp_Name": "Tamil arasi", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Wood Helper", "Desig_Description": "Wood Helper", "SalaryBasis": "Weekly", "FixedSalary": "185.00" }, { "Emp_Id": "18", "Identity_No": "", "Emp_Name": "Perumal", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Cook", "Desig_Description": "Cook", "SalaryBasis": "Weekly", "FixedSalary": "105.00" }, { "Emp_Id": "19", "Identity_No": "", "Emp_Name": "Andiappan", "Address": "Madurai", "Date_Of_Birth": "", "Desig_Name": "Watchman", "Desig_Description": "Watchman", "SalaryBasis": "Weekly", "FixedSalary": "150.00"}] }; //var jsonObj = eval('(' + HfJsonValue + ')'); var jsonObj = jQuery.parseJSON(HfJsonValue); and my page looks like this <div id="Pagination" class="page-numbers"></div> <br style="clear:both;" /> <div id="Searchresult"></div> <div id="hiddenresult" style="display:none;"> </div> <script type="text/javascript"> var pagination_options = { num_edge_entries: 2, num_display_entries: 8, callback: pageselectCallback, items_per_page: 3 } function pageselectCallback(page_index, jq) { var items_per_page = pagination_options.items_per_page; var offset = page_index * items_per_page; var new_content = $('#hiddenresult div.resultsdiv').slice(offset, offset + items_per_page).clone(); $('#Searchresult').empty().append(new_content); return false; } function initPagination() { var num_entries = $('#hiddenresult div.resultsdiv').length; // Create pagination element $("#Pagination").pagination(num_entries, pagination_options); } $(document).ready(function() { Iteratejsondata(); initPagination(); }); </script> I ve inspected through firebug and saw all jquery files have been downloaded but why this is hapenning? Any suggestion....

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  • REST api design to retrieve summary information

    - by Jacques René Mesrine
    I have a scenario in which I have REST API which manages a Resource which we will call Group. A Group is similar in concept to a discussion forum in Google Groups. Now I have two GET access method which I believe needs separate representations. The 1st GET access method retrieves the minimal amount of information about a Group. Given a *group_id* it should return a minimal amount of information like { group_id: "5t7yu8i9io0op", group_name: "Android Developers", is_moderated: true, number_of_users: 34, new_messages: 5, icon: "http://boo.com/pic.png" } The 2nd GET access method retrives summary information which are more statistical in nature like: { group_id: "5t7yu8i9io0op", top_ranking_users: { [ { user: "george", posts: 789, rank: 1 }, { user: "joel", posts: 560, rank: 2 } ...] }, popular_topics: { [ ... ] } } I want to separate these data access methods and I'm currently planning on this design: GET /group/:group_id/ GET /group/:group_id/stat Only the latter will return the statistical information about the group. What do you think about this ?

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  • Ext.data.JsonStore + Ext.DataView = not loading records

    - by Mulone
    Hi guys, I'm trying to make a DataView work (on Ext JS 2.3). Here is the jsonStore, which seems to be working (it calls the server and gets a valid response). Ext.onReady(function(){ var prefStore = new Ext.data.JsonStore({ autoLoad: true, //autoload the data url: 'getHighestUserPreferences', baseParams:{ userId: 'andreab', max: '50' }, root: 'preferences', fields: [ {name:'prefId', type: 'int'}, {name:'absInteractionScore', type:'float'} ] }); Then the xtemplate: var tpl = new Ext.XTemplate( '<tpl for=".">', '<div class="thumb-wrap" id="{name}">', '<div class="thumb"><img src="{url}" title="{name}"></div>', '<span class="x-editable">{shortName}</span></div>', '</tpl>', '<div class="x-clear"></div>' ); The panel: var panel = new Ext.Panel({ id:'geoPreferencesView', frame:true, width:600, autoHeight:true, collapsible:false, layout:'fit', title:'Geo Preferences', And the DataView items: new Ext.DataView({ store: prefStore, tpl: tpl, autoHeight:true, multiSelect: true, overClass:'x-view-over', itemSelector:'div.thumb-wrap', emptyText: 'No images to display' }) }); panel.render('extOutput'); }); What I get in the page is a blue frame with the title, but nothing in it. How can I debug this and see why it is not working? Cheers, Mulone

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  • JqGrid don't work in ASP .NET MVC2

    - by Raouf
    I have a project in ASP.NET MVC1 using VB.NET controlers and JqGrid. it works fine under MVC1. After migrating the project to ASP.NET MVC2, the grid is no longer populated. It seems that there is some new restrictions on returned Jsonresult in MVC2. How to solve this in VB.NET. Controler function populating the jqgrid is something like this : Function GetGridRecordset(ByVal qry As String) As JsonResult Dim result = New JsonResult() ... ... Return result End Function Is there anyone who have a solution? Thank you very much!

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  • ASP.NET MVC How to convert ModelState errors to json

    - by JK
    How do you get a list of all ModelState error messages? I found this code to get all the keys: ( http://stackoverflow.com/questions/888521/returning-a-list-of-keys-with-modelstate-errors) var errorKeys = (from item in ModelState where item.Value.Errors.Any() select item.Key).ToList(); But how would I get the error messages as a IList or IQueryable? I could go: foreach (var key in errorKeys) { string msg = ModelState[error].Errors[0].ErrorMessage; errorList.Add(msg); } But thats doing it manually - surely there is a way to do it using LINQ? The .ErrorMessage property is so far down the chain that I don't know how to write the LINQ...

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  • Python Class which checks input before passing to console (C) program

    - by Joseph Melettukunnel
    Hello, We are asked to write a web-frontend (in python) for a very complex (and old) console application, written in C. Since we have no access to the C Source Code, and we assume that there might be some unsafe methods, we'd like to check the input which will the passed to the console application. WebClient - Python Module - Console Application Do you have any suggestions or tips what we should check for? Right now we are only limiting the string length and filtering some (program specific) unallowed keywords. Thanks, Joseph EDIT: Will remove strings like %s because of format string attacks

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  • UTF-8 character encoding battles json_encode()

    - by Dave Jarvis
    Quest I am looking to fetch rows that have accented characters. The encoding for the column (NAME) is latin1_swedish_ci. The Code The following query returns Abord â Plouffe using phpMyAdmin: SELECT C.NAME FROM CITY C WHERE C.REGION_ID=10 AND C.NAME_LOWERCASE LIKE '%abor%' ORDER BY C.NAME LIMIT 30 The following displays expected values (function is called db_fetch_all( $result )): while( $row = mysql_fetch_assoc( $result ) ) { foreach( $row as $value ) { echo $value . " "; $value = utf8_encode( $value ); echo $value . " "; } $r[] = $row; } The displayed values: 5482 5482 Abord â Plouffe Abord â Plouffe The array is then encoded using json_encode: $rows = db_fetch_all( $result ); echo json_encode( $rows ); Problem The web browser receives the following value: {"ID":"5482","NAME":null} Instead of: {"ID":"5482","NAME":"Abord â Plouffe"} (Or the encoded equivalent.) Question The documentation states that json_encode() works on UTF-8. I can see the values being encoded from LATIN1 to UTF-8. After the call to json_encode(), however, the value becomes null. How do I make json_encode() encode the UTF-8 values properly? One possible solution is to use the Zend Framework, but I'd rather not if it can be avoided.

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  • json_encode with mysql content and umlauts in utf-8

    - by i3rutus
    Hey, i feel my beard growing while trying to find out the Problem here. Basic the Problem is, that Umlauts/Special Signs äöß ... don't work. I guess everyone is sick and tired of that questions but all the solutions found online don't seem to work. Im having utf-8 content in a utf-8 Mysql Database. I feel the Problem ist somewhere in the Database connection but i just can't figure out. character_set_client utf8 character_set_connection utf8 character_set_database utf8 character_set_filesystem binary character_set_results utf8 character_set_server latin1 character_set_system utf8 Im not sure if the problem is the latin1 for character_set_server because im not into that mysql stuff. I also dont know how to change cause i can't access the mysql server's config files. Whatever is confusing me, that if i get my results from the Database and echo it, print_r gives the right result. ini_set('default_charset','utf-8'); header('Content-Type: text/plain; > charset=utf-8'); Firefox says char encode is utf-8 but if when i output: print_r($listnew); echo json_encode($listnew[5]); print_r results everything right but json_encode does wrong. print_r: [5] => Array ( [id] => 5 [data] => U-Bahnhof Theresienstraße [size] => 17 ) json_encode: {"id":5,"data":"U-Bahnhof Theresienstra\u00dfe","size":17} i know json_encode needs a utf-8 string to work properly there and i feel im having a encode trouble here but i just can't firgure out where it is. Any help would be appreciated, thanks in advance. i3

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  • Three20 JSON problem: Can deploy to simulator but not device (extThree20JSON)

    - by wgpubs
    Everything builds and runs in the simulator fine ... but when I attempt to run on device I get: "arm-apple-darwin10-gcc-4.2.1: ..../three20/Build/Products/Debug-iphoneos/libextThree20JSON+YAJL.a: No such file or directory" I check that directory and indeed the file doesn't exist. It does exist in the "Debug-iphoneosimulator" though (which I guess explains why it works in the simulator). So what gives and what can I do to correct this? Thanks

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  • Post on a logged in users facebook wall

    - by Matt Nathanson
    Hey all, I've created a widget that will essentially unlock a music track, providing you post to either your twitter account, or facebook wall. I've signed up through facebook connect and I am able to successfully post onto my own wall... but the functionality I'm looking for is to be able to take ones username and password and automatically log in to facebook, and send my desired message. Like I said, it posts on my wall successfully, it's just not using the username and password from the field to log in to their respective facebooks and post. <?php $facename = $_POST['facename']; $facepass = $_POST['facepass']; define('FB_APIKEY', 'my_api_key'); define('FB_SECRET', 'my_secret_phrase_'); define('FB_SESSION', 'my_session_id'); require_once('facebook.php'); echo "post on wall"; try { $facebook = new Facebook(FB_APIKEY, FB_SECRET); $facebook->api_client->session_key = FB_SESSION; $fetch = array('friends' => array('pattern' => '.*', 'query' => "select uid2 from friend where uid1={$facename}")); echo $facebook->api_client->admin_setAppProperties(array('preload_fql' => json_encode($fetch))); $message = 'I downloaded Automatic Loveletter\'s new single \'To Die For\' here!'; if( $facebook->api_client->stream_publish($message)) echo "Added on FB Wall"; } catch(Exception $e) { echo $e . "<br />"; } ?> Any help in the right direction is greatly appreciated! Thanks, Matt

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