package com.github.carter659.spring13;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.InterceptorRegistration;import org.springframework.web.servlet.config.annotation.InterceptorRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;/** * 登录配置 博客出处：http://www.cnblogs.com/GoodHelper/ * */@Configurationpublic class WebSecurityConfig extends WebMvcConfigurerAdapter { ???/** ????* 登录session key ????*/ ???public final static String SESSION_KEY = "user"; ???@Bean ???public SecurityInterceptor getSecurityInterceptor() { ???????return new SecurityInterceptor(); ???} ???public void addInterceptors(InterceptorRegistry registry) { ???????InterceptorRegistration addInterceptor = registry.addInterceptor(getSecurityInterceptor()); ???????// 排除配置 ???????addInterceptor.excludePathPatterns("/error"); ???????addInterceptor.excludePathPatterns("/login**"); ???????// 拦截配置 ???????addInterceptor.addPathPatterns("/**"); ???} ???private class SecurityInterceptor extends HandlerInterceptorAdapter { ???????@Override ???????public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) ???????????????throws Exception { ???????????HttpSession session = request.getSession(); ???????????if (session.getAttribute(SESSION_KEY) != null) ???????????????return true; ???????????// 跳转登录 ???????????String url = "/login"; ???????????response.sendRedirect(url); ???????????return false; ???????} ???}}排除配置那里，千万别把，发送过去验证登录的网址，也给拦截了，这个原因，折腾了我大半个小时
// 排除配置
addInterceptor.excludePathPatterns("/login**");
https://www.cnblogs.com/GoodHelper/p/6343190.html
使用WebMvcConfigurerAdapter ?做登录，失效的一个小小原因
原文地址：https://www.cnblogs.com/kaka666/p/8353427.html