springMVC_05拦截器

实现interface HandlerInterceptor

继承class HandlerInterceptorAdapter

自定义拦截器

package com.gc.springmvc.controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

public class MyInterceptor extends HandlerInterceptorAdapter {

	@Override
	public boolean preHandle(HttpServletRequest request,
			HttpServletResponse response, Object handler) throws Exception {
		
		System.out.println(request.getRequestURL());
		
		if("".equals("")) {
			response.sendRedirect("/login");
		}
		
		return super.preHandle(request, response, handler);
	}
	
}

 

配置拦截器，加入到springMVC.xml中

    <mvc:interceptors>
    	<!-- 拦截所有请求 -->
    	<bean class="com.gc.springmvc.controller.MyInterceptor"/>
    	<!-- 拦截指定请求
    	<mvc:interceptor>
    		<mvc:mapping path=""/>
    		<bean class=""/>
    	</mvc:interceptor>
    	 -->
    </mvc:interceptors>