Java SpringMVC实现自定义拦截器_java

public class MyInterceptor implements HandlerInterceptor {
    /**
     *         preHandle: 在目标方法执行之前 进行拦截   return false:不放行
     */
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("preHandle1....");
        return true;
    }
    /**
     *       postHandle: 在目标方法执行之后，视图对象返回之前，执行的方法
     */
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("postHandle1....");
    }
    /**
     *        afterCompletion：在流程都执行完成后，执行的方法
     */
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("afterCompletion1....");
    }

}

    @RequestMapping("/target")
    public String targetMethed(){
        System.out.println("目标方法执行了");
        return "interceptor";
    }

    


    
success~~~~~~
    <% System.out.println("视图执行了....");%>