hessian 使用过程碰到的异常

flyer2010

今天在使用hessian时碰到了如下的问题：
org.springframework.remoting.RemoteAccessException: Cannot access Hessian remote service at [http://localhost:8080/logcenter/remoting/hessianQueryLog]; nested exception is com.caucho.hessian.io.HessianProtocolException: expected hessian reply at end of file?at org.springframework.remoting.caucho.HessianClientInterceptor.convertHessianAccessException(HessianClientInterceptor.java:254)at org.springframework.remoting.caucho.HessianClientInterceptor.invoke(HessianClientInterceptor.java:225)at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)at $Proxy1.queryLogItemByIdForHessian(Unknown Source)at com.xiu.log.qatest.LogHessianTest.main(LogHessianTest.java:55)Caused by: com.caucho.hessian.io.HessianProtocolException: expected hessian reply at end of file?at com.caucho.hessian.io.Hessian2Input.error(Hessian2Input.java:2701)at com.caucho.hessian.io.Hessian2Input.startReply(Hessian2Input.java:405)at com.caucho.hessian.client.HessianProxy.invoke(HessianProxy.java:218)at $Proxy0.queryLogItemByIdForHessian(Unknown Source)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)at java.lang.reflect.Method.invoke(Method.java:597)at org.springframework.remoting.caucho.HessianClientInterceptor.invoke(HessianClientInterceptor.java:219)... 4 more
这是因为接口中出现方法重载，在调用时，服务器端会跑出异常。
在整合spring中，在客户端的配置里面加上如下代码可以解决：
<property name="overloadEnabled" value="true"></property>

spring2.5.6 + hessian 4.0.1,采用remoting-servlet.xml的方式进行配置，客户端调用时出现如下错误，换成hessian 3.1.5就正常了。
Exception in thread "main" com.caucho.hessian.client.HessianRuntimeException: com.caucho.hessian.io.HessianProtocolException: '?' is an unknown codeat com.caucho.hessian.client.HessianProxy.invoke(HessianProxy.java:268)at $Proxy0.queryBusicardsTest(Unknown Source)at client.UserSimpleTest.main(UserSimpleTest.java:21)Caused by: com.caucho.hessian.io.HessianProtocolException: '?' is an unknown codeat com.caucho.hessian.client.HessianProxy.invoke(HessianProxy.java:266)... 2 more
spring2.5.6不支持hessian过高版本，最后只好换成在web.xml中配置hessian的访问地址