spring boot如何使用spring AOP实现拦截器

<dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-aop</artifactId> </dependency> 

/**  * 拦截器：记录用户操作日志，检查用户是否登录……  * @author XuJijun  */ @Aspect @Component public class ControllerInterceptor {   private static final Logger logger = LoggerFactory.getLogger(ControllerInterceptor.class);      @Value("${spring.profiles}")   private String env;      /**    * 定义拦截规则：拦截com.xjj.web.controller包下面的所有类中，有@RequestMapping注解的方法。    */   @Pointcut("execution(* com.xjj.web.controller..*(..)) and @annotation(org.springframework.web.bind.annotation.RequestMapping)")   public void controllerMethodPointcut(){}      /**    * 拦截器具体实现    * @param pjp    * @return JsonResult（被拦截方法的执行结果，或需要登录的错误提示。）    */   @Around("controllerMethodPointcut()") //指定拦截器规则；也可以直接把“execution(* com.xjj.........)”写进这里   public Object Interceptor(ProceedingJoinPoint pjp){     long beginTime = System.currentTimeMillis();     MethodSignature signature = (MethodSignature) pjp.getSignature();     Method method = signature.getMethod(); //获取被拦截的方法     String methodName = method.getName(); //获取被拦截的方法名          Set<Object> allParams = new LinkedHashSet<>(); //保存所有请求参数，用于输出到日志中          logger.info("请求开始，方法：{}", methodName);          Object result = null;      Object[] args = pjp.getArgs();     for(Object arg : args){       //logger.debug("arg: {}", arg);       if (arg instanceof Map<?, ?>) {         //提取方法中的MAP参数，用于记录进日志中         @SuppressWarnings("unchecked")         Map<String, Object> map = (Map<String, Object>) arg;          allParams.add(map);       }else if(arg instanceof HttpServletRequest){         HttpServletRequest request = (HttpServletRequest) arg;         if(isLoginRequired(method)){           if(!isLogin(request)){             result = new JsonResult(ResultCode.NOT_LOGIN, "该操作需要登录！去登录吗？/n/n（不知道登录账号？请联系老许。）", null);           }         }                  //获取query string 或 posted form data参数         Map<String, String[]> paramMap = request.getParameterMap();         if(paramMap!=null && paramMap.size()>0){           allParams.add(paramMap);         }       }else if(arg instanceof HttpServletResponse){         //do nothing...       }else{         //allParams.add(arg);       }     }          try {       if(result == null){         // 一切正常的情况下，继续执行被拦截的方法         result = pjp.proceed();       }     } catch (Throwable e) {       logger.info("exception: ", e);       result = new JsonResult(ResultCode.EXCEPTION, "发生异常："+e.getMessage());     }          if(result instanceof JsonResult){       long costMs = System.currentTimeMillis() - beginTime;       logger.info("{}请求结束，耗时：{}ms", methodName, costMs);     }          return result;   }      /**    * 判断一个方法是否需要登录    * @param method    * @return    */   private boolean isLoginRequired(Method method){     if(!env.equals("prod")){ //只有生产环境才需要登录       return false;     }          boolean result = true;     if(method.isAnnotationPresent(Permission.class)){       result = method.getAnnotation(Permission.class).loginReqired();     }          return result;   }      //判断是否已经登录   private boolean isLogin(HttpServletRequest request) {     return true;     /*String token = XWebUtils.getCookieByName(request, WebConstants.CookieName.AdminToken);     if("1".equals(redisOperator.get(RedisConstants.Prefix.ADMIN_TOKEN+token))){       return true;     }else {       return false;     }*/   } } 

2016-07-26 11:58:12,057:INFO http-nio-8082-exec-1 (ControllerInterceptor.java:58) - 请求开始，方法：login 2016-07-26 11:58:12,061:INFO http-nio-8082-exec-1 (ControllerInterceptor.java:103) - login请求结束，耗时：8ms