package com.whyc.service;
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import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
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import com.baomidou.mybatisplus.core.toolkit.Wrappers;
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import com.whyc.dto.Response;
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import com.whyc.mapper.UserMapper;
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import com.whyc.pojo.User;
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import com.whyc.util.DigestsUtil;
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import com.whyc.util.ShiroUtil;
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import org.apache.shiro.SecurityUtils;
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import org.apache.shiro.authc.IncorrectCredentialsException;
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import org.apache.shiro.authc.UnknownAccountException;
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import org.apache.shiro.authc.UsernamePasswordToken;
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import org.apache.shiro.subject.Subject;
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import org.springframework.stereotype.Service;
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import javax.annotation.Resource;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpSession;
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import java.util.Map;
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@Service
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public class LoginService {
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@Resource
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private UserMapper userMapper;
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public Response login(String userName, String password, HttpServletRequest request) {
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UsernamePasswordToken userToken = new UsernamePasswordToken(userName, password);
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Subject subject = SecurityUtils.getSubject();
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try {
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subject.login(userToken);
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}catch (UnknownAccountException e) {
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return new Response<>().set(0,false,"账号不存在");
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}catch (IncorrectCredentialsException e) {
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return new Response<>().set(0,false,"密码错误");
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}catch (Exception e){
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e.printStackTrace();
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return new Response<>().set(0,false,"其他异常");
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}
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if (subject.isAuthenticated()){
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//每个登录的用户都有一个全局变量,里面存着对应的SessionId;
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//同一个账号,后面登录的,会挤掉之前登录的SessionId
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System.out.println("全局存储中当前SessionId为:"+request.getSession().getId());
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request.getServletContext().setAttribute(userName,request.getSession().getId());
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//存储当前用户
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request.getSession().setAttribute("user",userName);
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QueryWrapper<User> queryWrapper = Wrappers.query();
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queryWrapper.eq("name",userName);
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User user = userMapper.selectOne(queryWrapper);
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return new Response<>().set(1,user);
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}
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return new Response<>().set(0,false);
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}
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public void logout() {
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Subject subject = SecurityUtils.getSubject();
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subject.logout();
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}
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}
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