利用spring aop拦截并获取@ResponseBody数据

拦截请求有很多种方法，最简单的用拦截器，但是拦截器并不能获取返回的数据（比如@ResponseBody），上网找了一段时间，可以利用spring的AOP特性拦截并获取，还能修改返回的数据。

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• 准备

<dependency>  <groupId>org.aspectj</groupId>  <artifactId>aspectjrt</artifactId>  <version>1.8.9</version></dependency><dependency>  <groupId>org.aspectj</groupId>  <artifactId>aspectjweaver</artifactId>  <version>1.8.9</version></dependency>

• 拦截代码

package com.jujin.riskmanager.interceptor;import org.aopalliance.intercept.MethodInterceptor;import org.aopalliance.intercept.MethodInvocation;import com.fasterxml.jackson.databind.ObjectMapper;import com.jujin.common.JsonList;public class ResultInterceptor implements MethodInterceptor {    private final static ObjectMapper jsonMapper = new ObjectMapper();      @Override    public Object invoke(MethodInvocation invocation) throws Throwable {         Object result = invocation.proceed();           // 随意处理结果吧         System.out.println("After: result: "+ jsonMapper.writeValueAsString(result));          return result;    }}

• spring配置

<!-- AOP --><bean id="controllerMethodInterceptor"          class="com.jujin.riskmanager.interceptor.ResultInterceptor"/>  <aop:config proxy-target-class="true">     <aop:pointcut id="controllerMethodPointcut" expression="execution(* com.jujin.riskmanager.controller..*(..)) and @annotation(org.springframework.web.bind.annotation.RequestMapping)"/>     <aop:advisor advice-ref="controllerMethodInterceptor" pointcut-ref="controllerMethodPointcut" />  </aop:config>