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