java之异常统一处理

spring-mvc.xml

1 <!-- aop -->
2   <aop:aspectj-autoproxy/>
3   <beans:bean id="controllerAop" class="com.financial.server.aop.ControllerAOP"/>
4   <aop:config><!-- 环绕通知 统一捕捉controller方法抛出的异常并进行处理  -->
5       <aop:aspect id="myAop" ref="controllerAop">
6           <aop:pointcut expression="@annotation (org.springframework.web.bind.annotation.RequestMapping)" id="target"/>
7           <aop:around method="handlerControllerMethod" pointcut-ref="target"/>
8       </aop:aspect>
9   </aop:config>  

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controller层拦截处理异常

 1 package com.financial.server.aop;
 2 
 3 import java.lang.reflect.Method;
 4 import java.util.Map;
 5 
 6 import org.apache.log4j.Logger;
 7 import org.aspectj.lang.ProceedingJoinPoint;
 8 import org.aspectj.lang.Signature;
 9 import org.aspectj.lang.reflect.MethodSignature;
10 import org.springframework.web.servlet.ModelAndView;
11 
12 import com.financial.server.util.ResultBean;
13 
14 public class ControllerAOP {
15 
16     private static final Logger logger = Logger.getLogger(ControllerAOP.class);
17 
18     public Object handlerControllerMethod(ProceedingJoinPoint pjp) {
19         long startTime = System.currentTimeMillis();
20         Object result;
21         Signature s = pjp.getSignature();
22         MethodSignature ms = (MethodSignature) s;
23         Method m = ms.getMethod();
24         try {
25             result = pjp.proceed();
26             logger.info
27 
28             (pjp.getSignature() + "接口用时:" + (System.currentTimeMillis() - startTime) + "毫秒");
29         } catch (Throwable e) {
30             result = handlerException(pjp, e, m.getReturnType().getSimpleName());
31         }
32         return result;
33     }
34 
35     private Object handlerException(ProceedingJoinPoint pjp, Throwable e, String returnName) {
36         e.printStackTrace();
37         if ("ModelAndView".equals(returnName)) {
38             ModelAndView mv = new ModelAndView("error");
39             return mv;
40         } else if ("ResultBean".equals(returnName)) {
41             ResultBean result = new ResultBean();
42             logger.error(pjp.getSignature() + " error ", e);
43             result.setMsg("服务器异常!请稍后重试!");
44             result.setCode(result.FAILTRUE);
45             // 异常这里可以做其他操作，如通知邮件，单独写到某个文件等等。
46             logger.info(e, e);
47             logger.error(e.getMessage(), e);
48             return result;
49         } else if ("String".equals(returnName)) {
50             return "error1";
51         }  else {
52             return "error";
53         }
54 
55     }
56 }

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测试方法

 1 @RequestMapping("/aa")
 2     public ModelAndView aa() throws Exception{
 3         throw new Exception("aa");
 4     }
 5     
 6     @RequestMapping("/bb")
 7     public String bb() throws Exception{
 8         throw new Exception("bb");
 9     }
10     
11     @RequestMapping("/cc")
12     @ResponseBody
13     public ResultBean cc() throws Exception{
14         throw new Exception("aa");
15     }

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