用户模块：用户登录接口

src/main/java/com/huangge1199/picture/constant/UserConstant.java

@@ -0,0 +1,30 @@
+package com.huangge1199.picture.constant;
+
+/**
+ * UserConstant
+ *
+ * @author huangge1199
+ * @since 2025/6/30 15:31:22
+ */
+public interface UserConstant {
+
+    /**
+     * 用户登录态键
+     */
+    String USER_LOGIN_STATE = "user_login";
+
+    //  region 权限
+
+    /**
+     * 默认角色
+     */
+    String DEFAULT_ROLE = "user";
+
+    /**
+     * 管理员角色
+     */
+    String ADMIN_ROLE = "admin";
+
+    // endregion
+}
+

src/main/java/com/huangge1199/picture/controller/UserController.java

@@ -3,7 +3,9 @@ package com.huangge1199.picture.controller;
 import com.huangge1199.picture.common.R;
 import com.huangge1199.picture.exception.ErrorCode;
 import com.huangge1199.picture.exception.ThrowUtils;
+import com.huangge1199.picture.model.dto.user.UserLoginRequest;
 import com.huangge1199.picture.model.dto.user.UserRegisterRequest;
+import com.huangge1199.picture.model.vo.LoginUserVO;
 import com.huangge1199.picture.service.UserService;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
@@ -11,6 +13,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
 import javax.annotation.Resource;
+import javax.servlet.http.HttpServletRequest;
 
 /**
  * 用户
@@ -37,5 +40,18 @@ public class UserController {
         long result = userService.userRegister(userAccount, userPassword, checkPassword);
         return R.ok(result);
     }
+
+    /**
+     * 用户登录
+     */
+    @PostMapping("/login")
+    public R<LoginUserVO> userLogin(@RequestBody UserLoginRequest userLoginRequest, HttpServletRequest request) {
+        ThrowUtils.throwIf(userLoginRequest == null, ErrorCode.PARAMS_ERROR);
+        String userAccount = userLoginRequest.getUserAccount();
+        String userPassword = userLoginRequest.getUserPassword();
+        LoginUserVO loginUserVO = userService.userLogin(userAccount, userPassword, request);
+        return R.ok(loginUserVO);
+    }
+
 }
 

src/main/java/com/huangge1199/picture/model/dto/user/UserLoginRequest.java

@@ -0,0 +1,28 @@
+package com.huangge1199.picture.model.dto.user;
+
+import lombok.Data;
+
+import java.io.Serializable;
+
+/**
+ * UserLoginRequest
+ *
+ * @author huangge1199
+ * @since 2025/6/30 15:24:45
+ */
+@Data
+public class UserLoginRequest implements Serializable {
+
+    private static final long serialVersionUID = 3191241716373120793L;
+
+    /**
+     * 账号
+     */
+    private String userAccount;
+
+    /**
+     * 密码
+     */
+    private String userPassword;
+}
+

src/main/java/com/huangge1199/picture/model/vo/LoginUserVO.java

@@ -0,0 +1,63 @@
+package com.huangge1199.picture.model.vo;
+
+import lombok.Data;
+
+import java.io.Serializable;
+import java.util.Date;
+
+/**
+ * 已登录用户视图（脱敏）
+ *
+ * @author huangge1199
+ * @since 2025/6/30 15:27:08
+ */
+@Data
+public class LoginUserVO implements Serializable {
+
+    /**
+     * id
+     */
+    private Long id;
+
+    /**
+     * 账号
+     */
+    private String userAccount;
+
+    /**
+     * 用户昵称
+     */
+    private String userName;
+
+    /**
+     * 用户头像
+     */
+    private String userAvatar;
+
+    /**
+     * 用户简介
+     */
+    private String userProfile;
+
+    /**
+     * 用户角色：user/admin
+     */
+    private String userRole;
+
+    /**
+     * 编辑时间
+     */
+    private Date editTime;
+
+    /**
+     * 创建时间
+     */
+    private Date createTime;
+
+    /**
+     * 更新时间
+     */
+    private Date updateTime;
+
+    private static final long serialVersionUID = 1L;
+}

src/main/java/com/huangge1199/picture/service/UserService.java

@@ -2,6 +2,9 @@ package com.huangge1199.picture.service;
 
 import com.huangge1199.picture.model.entity.User;
 import com.baomidou.mybatisplus.extension.service.IService;
+import com.huangge1199.picture.model.vo.LoginUserVO;
+
+import javax.servlet.http.HttpServletRequest;
 
 /**
  * @author hyy
@@ -28,4 +31,22 @@ public interface UserService extends IService<User> {
      */
     String getEncryptPassword(String userPassword);
 
+    /**
+     * 用户登录
+     *
+     * @param userAccount  用户账户
+     * @param userPassword 用户密码
+     * @param request      请求
+     * @return 脱敏后的用户信息
+     */
+    LoginUserVO userLogin(String userAccount, String userPassword, HttpServletRequest request);
+
+    /**
+     * 获得脱敏后的登录用户信息
+     *
+     * @param user 用户
+     * @return 脱敏后的登录用户信息
+     */
+    LoginUserVO getLoginUserVO(User user);
+
 }

src/main/java/com/huangge1199/picture/service/impl/UserServiceImpl.java

@@ -1,23 +1,30 @@
 package com.huangge1199.picture.service.impl;
 
+import cn.hutool.core.bean.BeanUtil;
 import cn.hutool.core.util.StrUtil;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.huangge1199.picture.constant.UserConstant;
 import com.huangge1199.picture.exception.ErrorCode;
 import com.huangge1199.picture.exception.MyException;
 import com.huangge1199.picture.model.entity.User;
 import com.huangge1199.picture.model.enums.UserRoleEnum;
+import com.huangge1199.picture.model.vo.LoginUserVO;
 import com.huangge1199.picture.service.UserService;
 import com.huangge1199.picture.mapper.UserMapper;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.util.DigestUtils;
 
+import javax.servlet.http.HttpServletRequest;
+
 /**
  * @author hyy
  * @description 针对表【user(用户)】的数据库操作Service实现
  * @createDate 2025-06-30 10:27:45
  */
 @Service
+@Slf4j
 public class UserServiceImpl extends ServiceImpl<UserMapper, User>
         implements UserService {
     @Override
@@ -64,6 +71,50 @@ public class UserServiceImpl extends ServiceImpl<UserMapper, User>
         return DigestUtils.md5DigestAsHex((salt + userPassword).getBytes());
     }
 
+    @Override
+    public LoginUserVO userLogin(String userAccount, String userPassword, HttpServletRequest request) {
+        // 1. 校验
+        if (StrUtil.hasBlank(userAccount, userPassword)) {
+            throw new MyException(ErrorCode.PARAMS_ERROR, "参数为空");
+        }
+        if (userAccount.length() < 4) {
+            throw new MyException(ErrorCode.PARAMS_ERROR, "账号错误");
+        }
+        if (userPassword.length() < 8) {
+            throw new MyException(ErrorCode.PARAMS_ERROR, "密码错误");
+        }
+        // 2. 加密
+        String encryptPassword = getEncryptPassword(userPassword);
+        // 查询用户是否存在
+        QueryWrapper<User> queryWrapper = new QueryWrapper<>();
+        queryWrapper.eq("userAccount", userAccount);
+        queryWrapper.eq("userPassword", encryptPassword);
+        User user = this.baseMapper.selectOne(queryWrapper);
+        // 用户不存在
+        if (user == null) {
+            log.info("user login failed, userAccount cannot match userPassword");
+            throw new MyException(ErrorCode.PARAMS_ERROR, "用户不存在或密码错误");
+        }
+        // 3. 记录用户的登录态
+        request.getSession().setAttribute(UserConstant.USER_LOGIN_STATE, user);
+        return this.getLoginUserVO(user);
+    }
+
+    /**
+     * 获取脱敏类的用户信息
+     *
+     * @param user 用户
+     * @return 脱敏后的用户信息
+     */
+    @Override
+    public LoginUserVO getLoginUserVO(User user) {
+        if (user == null) {
+            return null;
+        }
+        LoginUserVO loginUserVO = new LoginUserVO();
+        BeanUtil.copyProperties(user, loginUserVO);
+        return loginUserVO;
+    }
 
 }