Java开发网 - 开发ejb出现的问题。高手求助~!~

Topic: 开发ejb出现的问题。高手求助~!~

1.开发ejb出现的问题。高手求助~!~

Posted by: etrustzhang2004
Posted on: 2004-11-03 11:41

java.rmi.MarshalException: error marshalling arguments; nested exception is:
java.io.NotSerializableException: org.postgresql.jdbc2.Connection
at sun.rmi.server.UnicastRef.invoke(Unknown Source)
at org.jboss.invocation.jrmp.server.JRMPInvoker_Stub.invoke(Unknown Sour
ce)
at org.jboss.invocation.jrmp.interfaces.JRMPInvokerProxy.invoke(JRMPInvo
kerProxy.java:138)
at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.jav
a:108)
at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.
java:77)
at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:8
0)
at org.jboss.proxy.ejb.HomeInterceptor.invoke(HomeInterceptor.java:198)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:76)
at $Proxy0.create(Unknown Source)
at com.ets.mgtph1.db.Client.main(Client.java:30)
Caused by: java.io.NotSerializableException: org.postgresql.jdbc2.Connection
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.writeArray(Unknown Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.writeObject(Unknown Source)
at org.jboss.invocation.MarshalledValue.<init>(MarshalledValue.java:57)
at org.jboss.invocation.MarshalledInvocation.writeExternal(MarshalledInv
ocation.java:343)
at java.io.ObjectOutputStream.writeExternalData(Unknown Source)
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.writeObject(Unknown Source)
at sun.rmi.server.UnicastRef.marshalValue(Unknown Source)

2.Re:开发ejb出现的问题。高手求助~!~ [Re: etrustzhang2004]	Copy to clipboard
Posted by: heaven Posted on: 2004-11-03 12:13 ejb容器需要将参数序列化后才能传递，因此传递的参数需要实现Serializable接口

3.Re:开发ejb出现的问题。高手求助~!~ [Re: etrustzhang2004]	Copy to clipboard
Posted by: etrustzhang2004 Posted on: 2004-11-03 13:05 不太明白,请说的再详细点.最好举个例子. 谢谢