spring rmi

[Huntrees]

错误信息：
log4j:WARN No appenders could be found for logger (org.springframework.core.env.StandardEnvironment).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" org.springframework.remoting.RemoteLookupFailureException: Lookup of RMI stub failed; nested exception is java.rmi.ConnectException: Connection refused to host: localhost; nested exception is:
java.net.ConnectException: Connection refused: connect
at org.springframework.remoting.rmi.RmiClientInterceptor.lookupStub(RmiClientInterceptor.java:215)
at org.springframework.remoting.rmi.RmiClientInterceptor.getStub(RmiClientInterceptor.java:232)
at org.springframework.remoting.rmi.RmiClientInterceptor.invoke(RmiClientInterceptor.java:257)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy0.getPersonInfo(Unknown Source)
at net.dongchangzuo.rmi.test.SimpleTest.main(SimpleTest.java:18)
Caused by: java.rmi.ConnectException: Connection refused to host: localhost; nested exception is:
java.net.ConnectException: Connection refused: 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)
at sun.rmi.server.UnicastRef.newCall(Unknown Source)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at java.rmi.Naming.lookup(Unknown Source)
at org.springframework.remoting.rmi.RmiClientInterceptor.lookupStub(RmiClientInterceptor.java:200)
... 6 more
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown Source)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown Source)
... 13 more

client.xml 文件


<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans classpath:/org/springframework/beans/factory/xml/spring-beans-2.0.xsd"
default-lazy-init="true">
<bean id="PersonInfoService" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">
<property name="serviceUrl" value="rmi://localhost:8080/PersonInfo" />
<property name="serviceInterface" value="net.dongchangzuo.rmi.PersonInfo" />
<property name="refreshStubOnConnectFailure" value="true"/>
<property name="lookupStubOnStartup" value="false"/>
<property name="cacheStub" value="false"/>
</bean>
</beans>

server.xml 文件
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans classpath:/org/springframework/beans/factory/xml/spring-beans-2.0.xsd"
default-lazy-init="true">
<bean id="serviceExporter" class="org.springframework.remoting.rmi.RmiServiceExporter">
<property name="serviceName" value="PersonInfo"/>
<property name="service" ref="PersonInfoImple"/>
<property name="serviceInterface" value="net.dongchangzuo.rmi.PersonInfo"/>
<property name="registryPort" value="8000"/>
<property name="servicePort" value="8080"/>
</bean>
<bean id="PersonInfoImple" class="net.dongchangzuo.rmi.imple.PersonInfoImple"/>
</beans>


请问是什么原因