访问 EJB3 时 JBoss 类强制转换异常
我在使用 EJB3 时遇到了一个奇怪的问题。已部署 EJB3，并尝试从已部署的实例访问业务方法。 执行查找时出现以下错误：
- UserAuthenticationRemote 是远程 i/face
- UserAuthenticationBean 是 Bean
代码（失败）：
UserAuthenticationRemote remoteInterface = (UserAuthenticationRemote) context.lookup("UserAuthenticationBean/remote");
错误日志：
java.lang.ClassCastException: javax.naming.Reference cannot be cast to eds.enhancedqc.authentication.UserAuthenticationRemote
at eds.enhancedqc.client.application.LoginDialog$3.doInBackground(LoginDialog.java:220)
at org.jdesktop.swingworker.SwingWorker$1.call(Unknown Source)
Exception "java.lang.ClassNotFoundException: org.openide.loaders.DataObject"while constructing DataFlavor for: application/x-java-openide-dataobjectdnd; mask=1; class=org.openide.loaders.DataObject
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
Exception "java.lang.ClassNotFoundException: org.openide.loaders.DataObject"while constructing DataFlavor for: application/x-java-openide-dataobjectdnd; mask=1; class=org.openide.loaders.DataObject
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at org.jdesktop.swingworker.SwingWorker.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
请帮忙！
谢谢， 山姆
I am having a weird problem here with EJB3. Deployed and EJB3 and am trying to access the business method from the deployed instance.
I get the following error when the lookup is executed:
- UserAuthenticationRemote is the remote i/face
- UserAuthenticationBean is the Bean
Code (which fails):
UserAuthenticationRemote remoteInterface = (UserAuthenticationRemote) context.lookup("UserAuthenticationBean/remote");
Error log:
java.lang.ClassCastException: javax.naming.Reference cannot be cast to eds.enhancedqc.authentication.UserAuthenticationRemote
at eds.enhancedqc.client.application.LoginDialog$3.doInBackground(LoginDialog.java:220)
at org.jdesktop.swingworker.SwingWorker$1.call(Unknown Source)
Exception "java.lang.ClassNotFoundException: org.openide.loaders.DataObject"while constructing DataFlavor for: application/x-java-openide-dataobjectdnd; mask=1; class=org.openide.loaders.DataObject
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
Exception "java.lang.ClassNotFoundException: org.openide.loaders.DataObject"while constructing DataFlavor for: application/x-java-openide-dataobjectdnd; mask=1; class=org.openide.loaders.DataObject
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at org.jdesktop.swingworker.SwingWorker.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Please help!
Thanks,
Sam
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问题仅出在 jar 文件上。因此，从您的项目中删除所有 jar 文件，并从 jboss-6.0.0.Final\client 文件夹（这是您正在运行的服务器）中获取 jar 文件，并将其作为类路径，然后它将运行良好
The problem is with the jar file only. so remove all the jar file form you project and take the jar file from jboss-6.0.0.Final\client folder, which is your running server and put as class path then it will run fine
导入 jbossall-client.jar 并从类路径中删除 jboss-client.jar
import jbossall-client.jar and remove jboss-client.jar from your classpath