Controller层aop

利用@Around通知修改Controller的返回值

自定义一个注解@OperationBtn

在切入点Controller上加上自定义注解

接下来就是重点了，AspectJ写切面类，对该Controller 1 @Component

 @Aspect
 public class OperationBtnAspect {

     @Autowired
     private AppTableOperationServiceI appTableOperationService;

     @Around(value = "@annotation(anno)", argNames = "anno")
     public AjaxJson aroundMthod(ProceedingJoinPoint point, OperationBtn anno) throws Throwable{
         RequestAttributes ra = RequestContextHolder.getRequestAttributes();
         ServletRequestAttributes sra = (ServletRequestAttributes) ra;
         HttpServletRequest request = sra.getRequest();

         String url = request.getRequestURL().toString(); // http://localhost:8080/5U/appDataController.do （URL：返回的是完整的url，包括Http协议，端口号，servlet名字和映射路径，但它不包含请求参数。）
         String method = request.getMethod();  // POST
         String uri = request.getRequestURI();  // /5U/appDataController.do
         String queryString = request.getQueryString();  // addOrUpdateData&operId=402881e8645f580501645f61202c0044&optId=402881e8645f580501645f61203d004c（返回url路径后面的查询字符串）
         queryString = queryString.substring(queryString.indexOf("operId"));
         queryString = queryString.substring(,queryString.indexOf("&"));
         AppTableOperationEntity operationEntity = appTableOperationService.getEntity(AppTableOperationEntity.class, queryString);
         AjaxJson json = (AjaxJson) point.proceed();  //执行Controller中方法，得到返回值json
         if(json.isSuccess() && operationEntity !=null && operationEntity.getCallbackSucMsg() !=null){
             json.setMsg(operationEntity.getCallbackSucMsg());
         }else if(!json.isSuccess() && operationEntity !=null && operationEntity.getCallbackSucMsg() !=null){
             json.setMsg(operationEntity.getCallbackFailMsg());
         }
         return json;
     }
 }