SpringBoot学习：整合shiro（rememberMe记住我后自动登录session失效解决办法）

项目下载地址：http://download.csdn.NET/detail/aqsunkai/9805821

定义一个拦截器，判断用户是通过记住我登录时，查询数据库后台自动登录，同时把用户放入session中。

配置拦截器也很简单，Spring 为此提供了基础类WebMvcConfigurerAdapter ，我们只需要重写addInterceptors 方法添加注册拦截器。

实现自定义拦截器只需要3步：

1、创建我们自己的拦截器类并实现 HandlerInterceptor 接口。

2、创建一个Java类继承WebMvcConfigurerAdapter，并重写 addInterceptors 方法。

3、实例化我们自定义的拦截器，然后将对像手动添加到拦截器链中（在addInterceptors方法中添加）。

package com.sun.configuration;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.core.io.support.PropertiesLoaderUtils;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

import java.io.IOException;
import java.util.Enumeration;
import java.util.Properties;

/**
 * Created by sun on 2017-3-21.
 */
@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {

    /**
     * 此方法把该拦截器实例化成一个bean,否则在拦截器里无法注入其它bean
     * @return
     */
    @Bean
    SessionInterceptor sessionInterceptor() {
        return new SessionInterceptor();
    }
    /**
     * 配置拦截器
     * @param registry
     */
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(sessionInterceptor())
                .addPathPatterns("/**")
                .excludePathPatterns("/login","/permission/userInsert",
                        "/error","/tUser/insert","/gif/getGifCode");
    }

}

package com.sun.configuration;

import com.sun.permission.model.User;
import com.sun.permission.service.PermissionService;
import org.apache.log4j.Logger;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.Subject;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

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

/**
 * Created by sun on 2017-4-9.
 */
public class SessionInterceptor implements HandlerInterceptor{
    private final Logger logger = Logger.getLogger(SessionInterceptor.class);
    @Resource
    private PermissionService permissionService;
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object o) throws Exception {
        logger.info("---preHandle---");
        System.out.println(request.getContextPath());
        Subject currentUser = SecurityUtils.getSubject();
        //判断用户是通过记住我功能自动登录,此时session失效
        if(!currentUser.isAuthenticated() && currentUser.isRemembered()){
            try {
                User user = permissionService.findByUserEmail(currentUser.getPrincipals().toString());
                //对密码进行加密后验证
                UsernamePasswordToken token = new UsernamePasswordToken(user.getEmail(), user.getPswd(),currentUser.isRemembered());
                //把当前用户放入session
                currentUser.login(token);
                Session session = currentUser.getSession();
                session.setAttribute("currentUser",user);
                //设置会话的过期时间--ms,默认是30分钟，设置负数表示永不过期
                session.setTimeout(-1000l);
            }catch (Exception e){
                //自动登录失败,跳转到登录页面
                response.sendRedirect(request.getContextPath()+"/login");
                return false;
            }
            if(!currentUser.isAuthenticated()){
                //自动登录失败,跳转到登录页面
                response.sendRedirect(request.getContextPath()+"/login");
                return false;
            }
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
        logger.info("---postHandle---");
    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
        logger.info("---afterCompletion---");
    }
}