修改登录逻辑，配合前后端联调

src/main/java/com/rj/service/sys/impl/UserServiceImpl.java

@@ -1,11 +1,22 @@
 package com.rj.service.sys.impl;
 
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.rj.common.PasswordUtil;
 import com.rj.entity.sys.User;
 import com.rj.mapper.sys.UserMapper;
+import com.rj.pojo.sys.LoginRequest;
+import com.rj.pojo.sys.LoginResponse;
 import com.rj.service.sys.IUserService;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.stereotype.Service;
 
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.List;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
 /**
  * <p>
  * 用户表 服务实现类
@@ -17,4 +28,58 @@ import org.springframework.stereotype.Service;
 @Service
 public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {
 
+    @Override
+    public LoginResponse login(LoginRequest loginRequest) {
+        // 根据用户名查询用户
+        User user = getUserByUserName(loginRequest.getUserName());
+        
+        if (user == null) {
+            throw new RuntimeException("用户不存在");
+        }
+        
+        // 验证密码
+        if (!PasswordUtil.verifyPassword(loginRequest.getPassword(), user.getPassword())) {
+            throw new RuntimeException("密码错误");
+        }
+        
+        // 生成token
+        String token = UUID.randomUUID().toString().replace("-", "");
+        
+        // 更新用户的token
+        user.setToken(token);
+        this.updateById(user);
+        
+        // 构建登录响应
+        LoginResponse loginResponse = new LoginResponse();
+        loginResponse.setUserId(user.getUserId());
+        loginResponse.setUserName(user.getUserName());
+        loginResponse.setEmail(user.getEmail());
+        loginResponse.setAvatar(user.getAvatar());
+        loginResponse.setToken(token);
+        loginResponse.setLoginTime(LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
+        
+        return loginResponse;
+    }
+
+    @Override
+    public User getUserByUserName(String userName) {
+        LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
+        queryWrapper.eq(User::getUserName, userName);
+        return this.getOne(queryWrapper);
+    }
+
+    @Override
+    public User getUserByToken(String token) {
+        LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
+        queryWrapper.eq(User::getToken, token);
+        return this.getOne(queryWrapper);
+    }
+
+    @Override
+    public User getUserInfoByToken(String token) {
+        LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
+        queryWrapper.eq(User::getToken, token);
+        return this.getOne(queryWrapper);
+    }
+
 }