我在调用远程ejb时遇到问题。我已经成功部署了远程EJB：
public interface IHelloWordlHome extends EJBHome {
mybeans.IHelloWordl create() throws RemoteException, javax.ejb.CreateException;
}
public interface IHelloWordl extends javax.ejb.EJBObject {
public String hello(String name) throws RemoteException;
}
@javax.ejb.Stateless(name = "HelloWordlEJB")
public class HelloWordlBean implements Serializable {
public HelloWordlBean() {
}
public String hello(String name) {
return "asd" + name;
}
public void ejbCreate() throws CreateException {
}
}
ejb-jar.xml中：
<enterprise-beans>
<session>
<ejb-name>HelloWordlEJB</ejb-name>
<home>mybeans.IHelloWordlHome</home>
<remote>mybeans.IHelloWordl</remote>
<ejb-class>mybeans.HelloWordlBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
</session>
</enterprise-beans>
现在我正在尝试运行独立客户端。这意味着它完全不同的应用程序现在在与服务器（localhost）相同的机器上运行，但稍后它将在不同的机器上运行。由于glassfish描述（没有链接atm）说我使用了没有参数的InitialContext，在服务器日志中我找到了我的bean的JNDI名称（＆＃34; java：global / ear_ear_exploded / ejb / HelloWordlEJB！mybeans.HelloWordlBean＆＃34;并试图查找它。我使用gl-client.jar lib，我在classpath上有它。请注意，我没有复制.jar，我在glassfish安装文件夹中使用.jar（我知道这可能是问题因为它链接其他.jars）我复制了（ctrl + c＆amp; ctrl + v）bean接口（IHelloWordl） ）从服务器到客户端。
客户代码：
public static void main(String[] args) throws NamingException, RemoteException {
IHelloWordl foo = (IHelloWordl) new InitialContext().lookup("java:global/ear_ear_exploded/ejb/HelloWordlEJB!mybeans.HelloWordlBean");
foo.hello("Martin");
}
这是我运行的IDE：
P:\Java\jdk1.8.0\bin\java -Didea.launcher.port=7534 "-Didea.launcher.bin.path=P:\IntelliJ IDEA 13.1.1\bin" -Dfile.encoding=UTF-8 -classpath "P:\Java\jdk1.8.0\jre\lib\charsets.jar;P:\Java\jdk1.8.0\jre\lib\deploy.jar;P:\Java\jdk1.8.0\jre\lib\javaws.jar;P:\Java\jdk1.8.0\jre\lib\jce.jar;P:\Java\jdk1.8.0\jre\lib\jfr.jar;P:\Java\jdk1.8.0\jre\lib\jfxswt.jar;P:\Java\jdk1.8.0\jre\lib\jsse.jar;P:\Java\jdk1.8.0\jre\lib\management-agent.jar;P:\Java\jdk1.8.0\jre\lib\plugin.jar;P:\Java\jdk1.8.0\jre\lib\resources.jar;P:\Java\jdk1.8.0\jre\lib\rt.jar;P:\Java\jdk1.8.0\jre\lib\ext\access-bridge.jar;P:\Java\jdk1.8.0\jre\lib\ext\cldrdata.jar;P:\Java\jdk1.8.0\jre\lib\ext\dnsns.jar;P:\Java\jdk1.8.0\jre\lib\ext\jaccess.jar;P:\Java\jdk1.8.0\jre\lib\ext\jfxrt.jar;P:\Java\jdk1.8.0\jre\lib\ext\localedata.jar;P:\Java\jdk1.8.0\jre\lib\ext\nashorn.jar;P:\Java\jdk1.8.0\jre\lib\ext\sunec.jar;P:\Java\jdk1.8.0\jre\lib\ext\sunjce_provider.jar;P:\Java\jdk1.8.0\jre\lib\ext\sunmscapi.jar;P:\Java\jdk1.8.0\jre\lib\ext\sunpkcs11.jar;P:\Java\jdk1.8.0\jre\lib\ext\zipfs.jar;D:\projects\self\dt-reservation-system-for-doctors\project-ejbclient\out\production\project-ejbclient;D:\projects\self\dt-reservation-system-for-doctors\project-ejbclient\lib\javax.annotation.jar;D:\projects\self\dt-reservation-system-for-doctors\project-ejbclient\lib\javax.ejb.jar;D:\projects\self\dt-reservation-system-for-doctors\project-ejbclient\lib\javax.jms.jar;D:\projects\self\dt-reservation-system-for-doctors\project-ejbclient\lib\javax.transaction.jar;D:\projects\self\dt-reservation-system-for-doctors\project-ejbclient\lib\javax.persistence.jar;D:\projects\self\dt-reservation-system-for-doctors\project-ejbclient\lib\javax.servlet.jar;D:\projects\self\dt-reservation-system-for-doctors\project-ejbclient\lib\javax.resource.jar;D:\projects\self\dt-reservation-system-for-doctors\project-ejbclient\lib\javax.servlet.jsp.jar;D:\projects\self\dt-reservation-system-for-doctors\project-ejbclient\lib\javax.servlet.jsp.jstl.jar;P:\glassfish4\glassfish\lib\gf-client.jar;P:\glassfish4\glassfish\lib\appserv-rt.jar;P:\IntelliJ IDEA 13.1.1\lib\idea_rt.jar" com.intellij.rt.execution.application.AppMain mybeans.Main
当我运行客户端时，我遇到了异常情况，我无法理解并且没有在线帮助：
Exception in thread "main" javax.naming.CommunicationException: Communication exception for SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.url.pkgs=com.sun.enterprise.naming, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl} [Root exception is java.rmi.MarshalException: CORBA BAD_PARAM 1398079494 Maybe; nested exception is:
java.io.NotSerializableException: ----------BEGIN server-side stack trace----------
org.omg.CORBA.BAD_PARAM: WARNING: 00100006: Class mybeans.__EJB31_Generated__HelloWordlBean__Intf____Bean__ is not Serializable vmcid: SUN minor code: 6 completed: Maybe
at com.sun.proxy.$Proxy153.notSerializable(Unknown Source)
at com.sun.corba.ee.impl.misc.ORBUtility.throwNotSerializableForCorba(ORBUtility.java:783)
at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.writeAny(Util.java:360)
at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl$10.write(DynamicMethodMarshallerImpl.java:306)
at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl.writeResult(DynamicMethodMarshallerImpl.java:488)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:177)
at com.sun.corba.ee.impl.protocol.ServerRequestDispatcherImpl.dispatchToServant(ServerRequestDispatcherImpl.java:528)
at com.sun.corba.ee.impl.protocol.ServerRequestDispatcherImpl.dispatch(ServerRequestDispatcherImpl.java:199)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequestRequest(MessageMediatorImpl.java:1549)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequest(MessageMediatorImpl.java:1425)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleInput(MessageMediatorImpl.java:930)
at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:213)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequest(MessageMediatorImpl.java:694)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.dispatch(MessageMediatorImpl.java:496)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.doWork(MessageMediatorImpl.java:2222)
at com.sun.corba.ee.impl.threadpool.ThreadPoolImpl$WorkerThread.performWork(ThreadPoolImpl.java:497)
at com.sun.corba.ee.impl.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:540)
----------END server-side stack trace----------]
at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:513)
at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:438)
at javax.naming.InitialContext.lookup(InitialContext.java:417)
at mybeans.Main.main(Main.java:10)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.rmi.MarshalException: CORBA BAD_PARAM 1398079494 Maybe; nested exception is:
java.io.NotSerializableException: ----------BEGIN server-side stack trace----------
org.omg.CORBA.BAD_PARAM: WARNING: 00100006: Class mybeans.__EJB31_Generated__HelloWordlBean__Intf____Bean__ is not Serializable vmcid: SUN minor code: 6 completed: Maybe
at com.sun.proxy.$Proxy153.notSerializable(Unknown Source)
at com.sun.corba.ee.impl.misc.ORBUtility.throwNotSerializableForCorba(ORBUtility.java:783)
at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.writeAny(Util.java:360)
at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl$10.write(DynamicMethodMarshallerImpl.java:306)
at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl.writeResult(DynamicMethodMarshallerImpl.java:488)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:177)
at com.sun.corba.ee.impl.protocol.ServerRequestDispatcherImpl.dispatchToServant(ServerRequestDispatcherImpl.java:528)
at com.sun.corba.ee.impl.protocol.ServerRequestDispatcherImpl.dispatch(ServerRequestDispatcherImpl.java:199)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequestRequest(MessageMediatorImpl.java:1549)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequest(MessageMediatorImpl.java:1425)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleInput(MessageMediatorImpl.java:930)
at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:213)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequest(MessageMediatorImpl.java:694)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.dispatch(MessageMediatorImpl.java:496)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.doWork(MessageMediatorImpl.java:2222)
at com.sun.corba.ee.impl.threadpool.ThreadPoolImpl$WorkerThread.performWork(ThreadPoolImpl.java:497)
at com.sun.corba.ee.impl.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:540)
----------END server-side stack trace----------
at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.mapSystemException(Util.java:300)
at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.privateInvoke(StubInvocationHandlerImpl.java:211)
at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:150)
at com.sun.corba.ee.impl.presentation.rmi.codegen.CodegenStubBase.invoke(CodegenStubBase.java:226)
at com.sun.enterprise.naming.impl._SerialContextProvider_DynamicStub.lookup(com/sun/enterprise/naming/impl/_SerialContextProvider_DynamicStub.java)
at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:478)
... 8 more
Caused by: java.io.NotSerializableException: ----------BEGIN server-side stack trace----------
org.omg.CORBA.BAD_PARAM: WARNING: 00100006: Class mybeans.__EJB31_Generated__HelloWordlBean__Intf____Bean__ is not Serializable vmcid: SUN minor code: 6 completed: Maybe
at com.sun.proxy.$Proxy153.notSerializable(Unknown Source)
at com.sun.corba.ee.impl.misc.ORBUtility.throwNotSerializableForCorba(ORBUtility.java:783)
at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.writeAny(Util.java:360)
at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl$10.write(DynamicMethodMarshallerImpl.java:306)
at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl.writeResult(DynamicMethodMarshallerImpl.java:488)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:177)
at com.sun.corba.ee.impl.protocol.ServerRequestDispatcherImpl.dispatchToServant(ServerRequestDispatcherImpl.java:528)
at com.sun.corba.ee.impl.protocol.ServerRequestDispatcherImpl.dispatch(ServerRequestDispatcherImpl.java:199)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequestRequest(MessageMediatorImpl.java:1549)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequest(MessageMediatorImpl.java:1425)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleInput(MessageMediatorImpl.java:930)
at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:213)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequest(MessageMediatorImpl.java:694)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.dispatch(MessageMediatorImpl.java:496)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.doWork(MessageMediatorImpl.java:2222)
at com.sun.corba.ee.impl.threadpool.ThreadPoolImpl$WorkerThread.performWork(ThreadPoolImpl.java:497)
at com.sun.corba.ee.impl.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:540)
----------END server-side stack trace----------
at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.mapSystemException(Util.java:292)
... 13 more
Caused by: org.omg.CORBA.BAD_PARAM: ----------BEGIN server-side stack trace----------
org.omg.CORBA.BAD_PARAM: WARNING: 00100006: Class mybeans.__EJB31_Generated__HelloWordlBean__Intf____Bean__ is not Serializable vmcid: SUN minor code: 6 completed: Maybe
at com.sun.proxy.$Proxy153.notSerializable(Unknown Source)
at com.sun.corba.ee.impl.misc.ORBUtility.throwNotSerializableForCorba(ORBUtility.java:783)
at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.writeAny(Util.java:360)
at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl$10.write(DynamicMethodMarshallerImpl.java:306)
at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl.writeResult(DynamicMethodMarshallerImpl.java:488)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:177)
at com.sun.corba.ee.impl.protocol.ServerRequestDispatcherImpl.dispatchToServant(ServerRequestDispatcherImpl.java:528)
at com.sun.corba.ee.impl.protocol.ServerRequestDispatcherImpl.dispatch(ServerRequestDispatcherImpl.java:199)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequestRequest(MessageMediatorImpl.java:1549)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequest(MessageMediatorImpl.java:1425)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleInput(MessageMediatorImpl.java:930)
at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:213)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequest(MessageMediatorImpl.java:694)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.dispatch(MessageMediatorImpl.java:496)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.doWork(MessageMediatorImpl.java:2222)
at com.sun.corba.ee.impl.threadpool.ThreadPoolImpl$WorkerThread.performWork(ThreadPoolImpl.java:497)
at com.sun.corba.ee.impl.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:540)
----------END server-side stack trace---------- vmcid: SUN minor code: 6 completed: Maybe
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
at com.sun.corba.ee.impl.protocol.giopmsgheaders.MessageBase.getSystemException(MessageBase.java:813)
at com.sun.corba.ee.impl.protocol.giopmsgheaders.ReplyMessage_1_2.getSystemException(ReplyMessage_1_2.java:131)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.getSystemExceptionReply(MessageMediatorImpl.java:594)
at com.sun.corba.ee.impl.protocol.ClientRequestDispatcherImpl.processResponse(ClientRequestDispatcherImpl.java:519)
at com.sun.corba.ee.impl.protocol.ClientRequestDispatcherImpl.marshalingComplete(ClientRequestDispatcherImpl.java:393)
at com.sun.corba.ee.impl.protocol.ClientDelegateImpl.invoke(ClientDelegateImpl.java:272)
at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.privateInvoke(StubInvocationHandlerImpl.java:198)
... 12 more
我被解雇了：/任何人都可以帮忙吗？
答案 0 :(得分：0)
我不确定你从哪里得到这个，但看起来你混淆了什么。在 EJB 3 中，您不必扩展EJBHome或EJBObject。您不需要HomeInterface。
你应该这样做：
import javax.ejb.Remote;
@Remote
public interface HelloWorldRemote {
public String hello(String name);
}
和
@javax.ejb.Stateless(name = "HelloWorldEJB")
public class HelloWorldBean implements HelloWorldRemote {
public String hello(String name) {
return "asd" + name;
}
}
PS：HelloWorld（HelloWordl）中有拼写错误。
您不需要ejb-jar.xml中的任何声明。
客户端代码看起来应该类似于：
InitialContext con = new InitialContext();
HelloWorldBean foo = (HelloWorldBean) con.lookup("java:global/ear_ear_exploded/HelloWorldEJB");
另见：
答案 1 :(得分：0)
您的类必须是可序列化的，这意味着您的EJB需要实现Serializable