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POClassNotFoundException using Spring RMI
 

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    <p>I have two projects (client and server) trying to exchange some objects thru Spring RMI in Eclipse Helios. The client only knows their interfaces. A similar program passing Strings works fine.</p> <p>I'm following <em>Spring In Action</em>'s 3rd edition examples, and instead of Spitter preferred Twitter :) The objects work fine at the server, and no one knows the implementations, just Spring. What is odd is that it throws a ClassNotFoundException, seeming that the client is complaining he doesn't know TwitterImpl!</p> <p>Thanks in advance for any help!</p> <p>Stack trace:</p> <pre><code>Exception in thread "main" org.springframework.remoting.RemoteAccessException: Could not access remote service [rmi://localhost/TwitterService]; nested exception is java.rmi.UnmarshalException: error unmarshalling return; nested exception is: java.lang.ClassNotFoundException: twitter.domain.TwitterImpl (no security manager: RMI class loader disabled) at org.springframework.remoting.rmi.RmiClientInterceptorUtils.convertRmiAccessException(RmiClientInterceptorUtils.java:193) at org.springframework.remoting.rmi.RmiClientInterceptor.doInvoke(RmiClientInterceptor.java:347) at org.springframework.remoting.rmi.RmiClientInterceptor.invoke(RmiClientInterceptor.java:259) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202) at $Proxy1.getTwitter(Unknown Source) at twitter.Retrieve.getTwits(Retrieve.java:31) at twitter.Main.main(Main.java:30) </code></pre> <p>Client rmi.xml</p> <pre><code>&lt;bean class="org.springframework.remoting.rmi.RmiProxyFactoryBean" id="twitterService"&gt; &lt;property name="serviceUrl" value="rmi://localhost/TwitterService"&gt; &lt;/property&gt; &lt;property name="serviceInterface" value="twitter.service.TwitterService"&gt; &lt;/property&gt; &lt;/bean&gt; &lt;bean id="retrieve" class="twitter.Retrieve"&gt; &lt;property name="twitterService" ref="twitterService"&gt;&lt;/property&gt; &lt;/bean&gt; </code></pre> <p>Server rmi.xml</p> <pre><code>&lt;bean class="org.springframework.remoting.rmi.RmiServiceExporter"&gt; &lt;property name="service" ref="twitterService" /&gt; &lt;property name="serviceName" value="TwitterService" /&gt; &lt;property name="serviceInterface" value="twitter.service.TwitterService" /&gt; &lt;/bean&gt; &lt;bean class="twitter.service.TwitterServiceImpl" id="twitterService"&gt; &lt;property name="twits"&gt; ... &lt;/property&gt; &lt;property name="twitters"&gt; ... &lt;/property&gt; &lt;/bean&gt; </code></pre>
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