Spring HttpInvoker & EOFException

 

配置完服务端Spring
HttpInvoker后（Tomcat中），使用Web Browser访问资源地址收到如下错误：
 
  图1
 


 
图1中的java.io.EOFException是因为我是使用浏览器直接访问HttpInvokerServiceExporter，此时没有传递任何有意义的参数，但是HttpInvokerServer仍然已假设正确的方式读取。
 
分析图1中出现的异常情况后，接下来便配置了一个<
span lang="EN-US">Spring
HttpInvoker Client并再次访问服务器，但是却收到java.net.SocketTimeoutException: Read timed out异常：
 
光看客户端SocketTimeoutException有些迷惑，这时可以去查看 Tomcat/logs/ 目录下的localhost日志。在日志中此时可以看到如下异常：
 

2010-11-12 11:32:19 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet citation threw exception
java.lang.ClassNotFoundException: biz.model.BusiFlow
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1516)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1361)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:604)
at org.springframework.remoting.rmi.CodebaseAwareObjectInputStream.resolveClass(CodebaseAwareObjectInputStream.java:104)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1575)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at org.springframework.remoting.rmi.RemoteInvocationSerializingExporter.doReadRemoteInvocation(RemoteInvocationSerializingExporter.java:124)
at org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter.readRemoteInvocation(HttpInvokerServiceExporter.java:117)
at org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter.readRemoteInvocation(HttpInvokerServiceExporter.java:96)
at org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter.handleRequest(HttpInvokerServiceExporter.java:73)
at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:49)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:874)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:808)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:523)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:463)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
at java.lang.Thread.run(Thread.java:619)

 
 
从上面异常可以看出，原来是客户端项目中的biz.model.BusiFlow出了问题。因为之前为了省事便没有将HttpInvokerService打成JAR包，而是直接把它以及相关类复制到客户端项目中，并且没有按照服务端的package规程组织类路径，所以服务端中会抛出java.lang.ClassNotFoundException。
将biz.model.BusiFlow改成与服务器对应的格式（com.xxx.biz.model.BusiFlow）以及其他相关类的路径后，HttpInvoker工作正常。