Spring aop ThrowsAdvice 监测一个返回list的方法提示 Object cannot be cast to java.util.List

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Spring aop ThrowsAdvice 监测一个返回list的方法提示 Object cannot be cast to java.util.List5

我想通过这个来集中处理代码中的异常，并将异常发送给指定的邮箱，发送邮件可以实现，但是测试的过程中出现一个问题，当要执行的一个方法返回的List<?>泛型的时候实现afterThrowing的方法会提示说 java.lang.ClassCastException: java.lang.Object cannot be cast to java.util.List

以下是SpringMVC controller 中的action
public ModelAndView query(HttpServletRequest request,HttpServletResponse response){
try {
request.setAttribute("users", UserService.query());
} catch (Exception e) {
e.printStackTrace();
}
return new ModelAndView(this.getSuccessView());
}

以下是service中的方法
public List<User> query()throws RuntimeException{
List<User>list=this.sqlSession.selectList("User.getUserList2");
return list;
}

/****
*实现 ThrowsAdvice的类
主要用于检测出现的Exception，然后发送给指定邮箱
******/
package com.mvc.aop;
import java.lang.reflect.Method;
import org.springframework.aop.ThrowsAdvice;
public class ExceptionLog implements ThrowsAdvice {
public void afterThrowing(Method method, Object[] args, Object target,Exception throwable) {
       System.out.println("产生异常的方法名称： " + method.getName());
       for(Object o:args){
           System.out.println("方法的参数：   " + o.toString());
       }
       System.out.println("代理对象：   " + target.getClass().getName());
       System.out.println("抛出的异常:    " + throwable.getMessage()+">>>>>>>"+ throwable.getCause());
       System.out.println("异常详细信息：　　　"+throwable.fillInStackTrace());
       //省略将异常信息发送给指定邮件的代码
   }
}

Spring配置文件内容
<bean id="logAdvice" class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
        <property name="beanNames">
            <list>
                <value>userService</value>
            </list>
        </property>
        <property name="interceptorNames">
        <list>
            <value>exceptionLog</value>
        </list>
        </property>
    </bean>

/**
*以下是输出的信息
**/
进入AOP,当前方法为:query
产生异常的方法名称： query
代理对象：   com.mvc.dao.impl.UserDAO$$EnhancerByCGLIB$$1a0673ec
抛出的异常:    java.lang.Object cannot be cast to java.util.List>>>>>>>null
异常详细信息：　　　java.lang.ClassCastException: java.lang.Object cannot be cast to java.util.List
java.lang.ClassCastException: java.lang.Object cannot be cast to java.util.List
at com.mvc.aop.ExceptionLog.afterThrowing(ExceptionLog.java:13)
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.aop.framework.adapter.ThrowsAdviceInterceptor.invokeHandlerMethod(ThrowsAdviceInterceptor.java:144)
at org.springframework.aop.framework.adapter.ThrowsAdviceInterceptor.invoke(ThrowsAdviceInterceptor.java:129)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at com.sun.proxy.$Proxy1.query(Unknown Source)
at com.mvc.web.controller.UserController.query(UserController.java:38)
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.web.servlet.mvc.multiaction.MultiActionController.invokeNamedMethod(MultiActionController.java:471)
at org.springframework.web.servlet.mvc.multiaction.MultiActionController.handleRequestInternal(MultiActionController.java:408)
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:552)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
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:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:879)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:600)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1703)
at java.lang.Thread.run(Thread.java:662)