springmvc登录拦截器

楽焫旒璡

已于 2022-06-24 16:40:55 修改

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分类专栏： Spring 文章标签： spring mvc filter SSM 登录拦截

于 2018-01-31 09:45:24 首次发布

原文链接：www.baidu.com

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本文介绍了一个登录拦截器的实现方式，该拦截器用于检查用户的登录状态，并定义了一系列不需要拦截的URL路径。通过Spring的OncePerRequestFilter实现了高效的过滤机制。

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1. 拦截类

package com.pro.huanbao.filter;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

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

import org.springframework.web.filter.OncePerRequestFilter;

/**
 * @Title   NotLoginedFilter.java
 * @Package com.wanpu.filter
 * @author  wanpu_ly
 * @dade    2017年12月26日 上午11:33:37
 * @version V1.0
 * 类说明:	
 */
public class NotLoginedFilter extends OncePerRequestFilter{

	@Override
	protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
			throws ServletException, IOException {
		// 不过滤的uri
		System.err.println("请求过滤器启动,开始过滤请求...");
		List<String> notFilter = new ArrayList<>();
		notFilter.add("/");
		notFilter.add("/login");
		
        notFilter.add("/sadr/**");
        notFilter.add("/search/**");
        notFilter.add("/shop/**");
        notFilter.add("/product/**");
        notFilter.add("/information/**");
        
        notFilter.add("/company/thirdlogin/*");
        notFilter.add("/company/thirdnone/*");
        notFilter.add("/company/updatePasswordPage/*");
        notFilter.add("/company/updatePassword/*");
        
        notFilter.add("/company/loginByQQIndex");
        notFilter.add("/company/loginByQQ");
        notFilter.add("/company/loginByWeixin");
        notFilter.add("/company/loginByPassword");
        notFilter.add("/company/loginBycode");
        notFilter.add("/company/confirmPasswordExistence");
        notFilter.add("/company/sendRegisterCode");
        notFilter.add("/company/sendLoginCode");
        notFilter.add("/company/selectByName");
        notFilter.add("/company/selectByPhone");
        notFilter.add("/register");
        notFilter.add("/register.html");
        notFilter.add("/company/saveReferUrl");
        notFilter.add("/company/selectByEmail");
        notFilter.add("/company/sendValidateMail");
        notFilter.add("/getImageBase");
        notFilter.add("/updateProduceBrandAndAddress");
        notFilter.add("/index_img/transfer/*");
        notFilter.add("/deleteIndexCache");
        notFilter.add("/deleteCategoryCache");
        notFilter.add("/myhb/toCipherback");
		
		boolean doFilter = true;
		// 请求的uri
		String uri = request.getRequestURI();
		// 排除请求
		if (notFilter.indexOf(uri) != -1) {
			doFilter = false;
		}else if (uri.indexOf("sadr") != -1) {
			doFilter = false;
		}else if (uri.indexOf("search") != -1) {
			doFilter = false;
		}else if (uri.indexOf("shop") != -1) {
			doFilter = false;
		}else if (uri.indexOf("product") != -1) {
			doFilter = false;
		}else if (uri.indexOf("information") != -1) {
			doFilter = false;
		}else if (uri.indexOf("/company/thirdlogin/") != -1) {
			doFilter = false;
		}else if (uri.indexOf("/company/thirdnone/") != -1) {
			doFilter = false;
		}else if (uri.indexOf("/company/updatePasswordPage/") != -1) {
			doFilter = false;
		// 不拦截css,js,图片等
		}else if (uri.indexOf("js") != -1) {
			doFilter = false;
		}else if (uri.indexOf("style") != -1) {
			doFilter = false;
		}
		else if (uri.indexOf("assets") != -1) {
			doFilter = false;
		}
		else if (uri.indexOf("im") != -1) {
			doFilter = false;
		}
		
		
		if (doFilter) {
			// 执行过滤
			// 从session中获取登录实体
			Object obj = request.getSession().getAttribute("name");
			if (obj == null) {
				// 如果session中不存在登录者实体,则弹出框提示需要登录
				response.sendRedirect("/login");
			}else {
				filterChain.doFilter(request, response);
			}
			
		}else {
			filterChain.doFilter(request, response);
		}
	}

}

2. web.xml 配置

<!-- 登录拦截器 -->
	<filter>
		<filter-name>NotLoginedFilter</filter-name>
		<filter-class>com.pro.huanbao.filter.NotLoginedFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>NotLoginedFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>