RmiServiceExporter exception

[muinjava]

hi, i use code sample in pro-spring, chp16.
if i set serviceUrl=localhost and both server and client code run locally(on one machine), client code can access romote service. but if i try to run them on two different machine, i got error as:
java.io.InvalidClassException: org.springframework.remoting.support.RemoteInvocat ion; local class incompatible: stream classdesc serialVersionUID = 6876024250231820554, local class serialVersionUID = -7379940429104417144


client xml file as followings:
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="helloWorldService" class="org.springframework.remoting.rmi.RmiProxyFa ctoryBean">
<property name="serviceUrl">
<value>rmi://179.31.168.173:9000/HelloWorld</value>
</property>
<property name="serviceInterface">
<value>com.apress.prospring.ch16.remoting.HelloWor ld</value>
</property>
</bean>

<bean id="helloWorldClient" class="com.apress.prospring.ch16.remoting.rmi.Hell oWorldClient">
<property name="helloWorldService">
<ref local="helloWorldService"/>
</property>
</bean>
</beans>

could sb meet the same problem? and how to fix it? thanks!

[sjivan]

Try using the same version of the Spring jars on your second machine.

Sanjiv

[muinjava]

thanks a lot.

[bluedolphincp]

I'm studying the same example from "Pro Spring" . If I run both client and server on the same machine, everything's ok, here is the print out from the server application:

信息: Looking for RMI registry at port '1099'
Host Started...
2006-6-28 15:25:22 org.springframework.aop.framework.DefaultAopProxyFactory <clinit>
信息: CGLIB2 available: proxyTargetClass feature enabled
2006-6-28 15:25:22 org.springframework.remoting.rmi.RmiServiceExporter afterPropertiesSet
信息: Binding RMI service 'HelloWorld' to registry at port '1099'

And here is the print out from the client application running on the same machine with the server application:

2006-6-28 15:33:27 org.springframework.remoting.rmi.RmiClientInterceptor prepare
信息: RMI stub [rmi://172.16.6.108:1099/HelloWorld] is an RMI invoker
Hello World

Yet when I run the client application on another machine, i got following exception:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'helloWorldService' defined in class path resource [rmi/HellowWorldClient.xml]: Initialization of bean failed; nested exception is java.rmi.ConnectException: Connection refused to host: 172.16.6.108; nested exception is: 
	java.net.ConnectException: Connection timed out: connect
java.rmi.ConnectException: Connection refused to host: 172.16.6.108; nested exception is: 
	java.net.ConnectException: Connection timed out: connect
	at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)
	at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source)
	at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source)

Can somebody please tell me what's going wrong here?
Thanks very much.

[bluedolphincp]

I'm studying the same example from "Pro Spring" . If I run both client and server on the same machine, everything's ok, here is the print out from the server application:

信息: Looking for RMI registry at port '1099'
Host Started...
2006-6-28 15:25:22 org.springframework.aop.framework.DefaultAopProxyFactory <clinit>
信息: CGLIB2 available: proxyTargetClass feature enabled
2006-6-28 15:25:22 org.springframework.remoting.rmi.RmiServiceExporter afterPropertiesSet
信息: Binding RMI service 'HelloWorld' to registry at port '1099'

And here is the print out from the client application running on the same machine with the server application:

2006-6-28 15:33:27 org.springframework.remoting.rmi.RmiClientInterceptor prepare
信息: RMI stub [rmi://172.16.6.108:1099/HelloWorld] is an RMI invoker
Hello World

Yet when I run the client application on another machine, i got following exception:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'helloWorldService' defined in class path resource [rmi/HellowWorldClient.xml]: Initialization of bean failed; nested exception is java.rmi.ConnectException: Connection refused to host: 172.16.6.108; nested exception is: 
	java.net.ConnectException: Connection timed out: connect
java.rmi.ConnectException: Connection refused to host: 172.16.6.108; nested exception is: 
	java.net.ConnectException: Connection timed out: connect
	at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)
	at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source)
	at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source)

Can somebody please tell me what's going wrong here?
Thanks very much.