3.3 用户注册

pom.xml

@@ -41,6 +41,11 @@
             <artifactId>knife4j-openapi2-spring-boot-starter</artifactId>
             <version>4.4.0</version>
         </dependency>
+        <!--密码BCrypt加密 -->
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-crypto</artifactId>
+        </dependency>
         <dependency>
             <groupId>com.mysql</groupId>
             <artifactId>mysql-connector-j</artifactId>

sql/create_table.sql

@@ -0,0 +1,23 @@
+-- 创建库
+create database if not exists `smile-picture`;
+
+-- 使用库
+use `smile-picture`;
+
+-- 用户表
+create table if not exists user
+(
+    id           bigint auto_increment comment 'id' primary key,
+    user_account  varchar(256)                           not null comment '账号',
+    user_password varchar(512)                           not null comment '密码',
+    user_name     varchar(256)                           null comment '用户昵称',
+    user_avatar   varchar(1024)                          null comment '用户头像',
+    user_profile  varchar(512)                           null comment '用户简介',
+    user_role     varchar(256) default 'user'            not null comment '用户角色：user/admin',
+    edit_time     datetime     default CURRENT_TIMESTAMP not null comment '编辑时间',
+    create_time   datetime     default CURRENT_TIMESTAMP not null comment '创建时间',
+    update_time   datetime     default CURRENT_TIMESTAMP not null on update CURRENT_TIMESTAMP comment '更新时间',
+    is_delete     tinyint      default 0                 not null comment '是否删除',
+    UNIQUE KEY uk_userAccount (user_account),
+    INDEX idx_userName (user_name)
+    ) comment '用户' collate = utf8mb4_unicode_ci;

src/main/java/edu/whut/smilepicturebackend/SmilePictureBackendApplication.java

@@ -1,9 +1,11 @@
 package edu.whut.smilepicturebackend;
 
+import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
 @SpringBootApplication
+@MapperScan("edu.whut.smilepicturebackend.mapper")
 public class SmilePictureBackendApplication {
 
     public static void main(String[] args) {

src/main/java/edu/whut/smilepicturebackend/config/SecurityConfig.java

@@ -0,0 +1,13 @@
+package edu.whut.smilepicturebackend.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+
+@Configuration
+public class SecurityConfig {
+    @Bean
+    public BCryptPasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder(12); // 10 是强度
+    }
+}

src/main/java/edu/whut/smilepicturebackend/controller/UserController.java

@@ -0,0 +1,34 @@
+package edu.whut.smilepicturebackend.controller;
+
+import edu.whut.smilepicturebackend.common.BaseResponse;
+import edu.whut.smilepicturebackend.common.ResultUtils;
+import edu.whut.smilepicturebackend.exception.ErrorCode;
+import edu.whut.smilepicturebackend.exception.ThrowUtils;
+import edu.whut.smilepicturebackend.model.dto.UserRegisterRequest;
+import edu.whut.smilepicturebackend.service.UserService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+
+@RestController
+@RequestMapping("/user")
+@RequiredArgsConstructor
+public class UserController {
+    private final UserService userService;
+
+    /**
+     * 用户注册
+     */
+    @PostMapping("/register")
+    public BaseResponse<Long> userRegister(@RequestBody UserRegisterRequest userRegisterRequest) {
+        ThrowUtils.throwIf(userRegisterRequest == null, ErrorCode.PARAMS_ERROR);
+        String userAccount = userRegisterRequest.getUserAccount();
+        String userPassword = userRegisterRequest.getUserPassword();
+        String checkPassword = userRegisterRequest.getCheckPassword();
+        long result = userService.userRegister(userAccount, userPassword, checkPassword);
+        return ResultUtils.success(result);
+    }
+}

src/main/java/edu/whut/smilepicturebackend/mapper/UserMapper.java

@@ -0,0 +1,18 @@
+package edu.whut.smilepicturebackend.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import edu.whut.smilepicturebackend.model.entity.User;
+
+/**
+* @author 张三
+* @description 针对表【user(用户)】的数据库操作Mapper
+* @createDate 2025-06-05 17:43:52
+*/
+
+public interface UserMapper extends BaseMapper<User> {
+
+}
+
+
+
+

src/main/java/edu/whut/smilepicturebackend/model/dto/UserRegisterRequest.java

@@ -0,0 +1,29 @@
+package edu.whut.smilepicturebackend.model.dto;
+
+import lombok.Data;
+
+import java.io.Serializable;
+
+/**
+ * 用户注册请求
+ */
+@Data
+public class UserRegisterRequest implements Serializable {
+
+    private static final long serialVersionUID = -1321880859645675653L;
+    /**
+     * 账号
+     */
+    private String userAccount;
+
+    /**
+     * 密码
+     */
+    private String userPassword;
+
+    /**
+     * 确认密码
+     */
+    private String checkPassword;
+
+}

src/main/java/edu/whut/smilepicturebackend/model/entity/User.java

@@ -0,0 +1,75 @@
+package edu.whut.smilepicturebackend.model.entity;
+
+import com.baomidou.mybatisplus.annotation.*;
+import lombok.Data;
+
+import java.io.Serializable;
+import java.util.Date;
+
+/**
+ * 用户
+ * @TableName user
+ */
+@TableName(value ="user")
+@Data
+public class User implements Serializable {
+    /**
+     * id
+     */
+    @TableId(type = IdType.ASSIGN_ID)
+    private Long id;
+
+    /**
+     * 账号
+     */
+    private String userAccount;
+
+    /**
+     * 密码
+     */
+    private String userPassword;
+
+    /**
+     * 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;
+
+    /**
+     * 是否删除
+     */
+    @TableLogic    //标记逻辑删除字段
+    private Integer isDelete;
+
+    @TableField(exist = false)
+    private static final long serialVersionUID = 1L;
+}

src/main/java/edu/whut/smilepicturebackend/model/enums/UserRoleEnum.java

@@ -0,0 +1,42 @@
+package edu.whut.smilepicturebackend.model.enums;
+
+import cn.hutool.core.util.ObjUtil;
+import lombok.Getter;
+
+/**
+ * 用户角色枚举
+ */
+@Getter
+public enum UserRoleEnum {
+
+    USER("用户", "user"),
+    VIP("会员", "vip"),
+    ADMIN("管理员", "admin");
+
+    private final String text;
+
+    private final String value;
+
+    UserRoleEnum(String text, String value) {
+        this.text = text;
+        this.value = value;
+    }
+
+    /**
+     * 根据 value 获取枚举
+     *
+     * @param value 枚举值的 value
+     * @return 枚举值
+     */
+    public static UserRoleEnum getEnumByValue(String value) {
+        if (ObjUtil.isEmpty(value)) {
+            return null;
+        }
+        for (UserRoleEnum userRoleEnum : UserRoleEnum.values()) {
+            if (userRoleEnum.value.equals(value)) {
+                return userRoleEnum;
+            }
+        }
+        return null;
+    }
+}

src/main/java/edu/whut/smilepicturebackend/service/UserService.java

@@ -0,0 +1,30 @@
+package edu.whut.smilepicturebackend.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import edu.whut.smilepicturebackend.model.entity.User;
+
+/**
+* @author 张三
+* @description 针对表【user(用户)】的数据库操作Service
+* @createDate 2025-06-05 17:43:52
+*/
+public interface UserService extends IService<User> {
+    /**
+     * 用户注册
+     *
+     * @param userAccount   用户账户
+     * @param userPassword  用户密码
+     * @param checkPassword 校验密码
+     * @return 新用户 id
+     */
+    long userRegister(String userAccount, String userPassword, String checkPassword);
+    /**
+     * 获取加密后的密码
+     *
+     * @param userPassword
+     * @return
+     */
+
+
+    String getEncryptPassword(String userPassword);
+}

src/main/java/edu/whut/smilepicturebackend/service/impl/UserServiceImpl.java

@@ -0,0 +1,86 @@
+package edu.whut.smilepicturebackend.service.impl;
+import cn.hutool.core.util.StrUtil;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import edu.whut.smilepicturebackend.exception.BusinessException;
+import edu.whut.smilepicturebackend.exception.ErrorCode;
+import edu.whut.smilepicturebackend.model.entity.User;
+import edu.whut.smilepicturebackend.model.enums.UserRoleEnum;
+import edu.whut.smilepicturebackend.service.UserService;
+import edu.whut.smilepicturebackend.mapper.UserMapper;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.stereotype.Service;
+
+/**
+* @author 张三
+* @description 针对表【user(用户)】的数据库操作Service实现
+* @createDate 2025-06-05 17:43:52
+*/
+@Service
+@RequiredArgsConstructor
+public class UserServiceImpl extends ServiceImpl<UserMapper, User>
+    implements UserService{
+    private final BCryptPasswordEncoder passwordEncoder;
+    /**
+     * 用户注册
+     *
+     * @param userAccount   用户账户
+     * @param userPassword  用户密码
+     * @param checkPassword 校验密码
+     * @return
+     */
+    @Override
+    public long userRegister(String userAccount, String userPassword, String checkPassword) {
+        // 1. 校验参数
+        if (StrUtil.hasBlank(userAccount, userPassword, checkPassword)) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR, "参数为空");
+        }
+        if (userAccount.length() < 4) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR, "用户账号过短");
+        }
+        if (userPassword.length() < 8 || checkPassword.length() < 8) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR, "用户密码过短");
+        }
+        if (!userPassword.equals(checkPassword)) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR, "两次输入的密码不一致");
+        }
+        // 2. 检查用户账号是否和数据库中已有的重复
+        QueryWrapper<User> queryWrapper = new QueryWrapper<>();
+        queryWrapper.eq("userAccount", userAccount);
+        long count = this.baseMapper.selectCount(queryWrapper);
+        if (count > 0) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR, "账号重复");
+        }
+        // 3. 密码一定要加密
+        String encryptPassword = getEncryptPassword(userPassword);
+        // 4. 插入数据到数据库中
+        User user = new User();
+        user.setUserAccount(userAccount);
+        user.setUserPassword(encryptPassword);
+        user.setUserName("无名");
+        user.setUserRole(UserRoleEnum.USER.getValue());
+        boolean saveResult = this.save(user);
+        if (!saveResult) {
+            throw new BusinessException(ErrorCode.SYSTEM_ERROR, "注册失败，数据库错误");
+        }
+        return user.getId();
+    }
+    /**
+     * 获取加密后的密码
+     *
+     * @param userPassword 用户密码
+     * @return 加密后的密码
+     */
+    @Override
+    public String getEncryptPassword(String userPassword) {
+        return passwordEncoder.encode(userPassword);
+//        // 加盐，混淆密码
+//        final String SALT = "smile12306";
+//        return DigestUtils.md5DigestAsHex((SALT + userPassword).getBytes());
+    }
+}
+
+
+
+

src/main/java/edu/whut/smilepicturebackend/utils/PasswordUtils.java

@@ -0,0 +1,23 @@
+package edu.whut.smilepicturebackend.utils;
+
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+
+//BCrypt加密工具类，不如Bean注入效率更高，已废弃。
+public class PasswordUtils {
+
+    private static final BCryptPasswordEncoder encoder = new BCryptPasswordEncoder();
+
+    /**
+     * 加密密码
+     */
+    public static String encode(String rawPassword) {
+        return encoder.encode(rawPassword);
+    }
+
+    /**
+     * 校验密码是否匹配
+     */
+    public static boolean matches(String rawPassword, String encodedPassword) {
+        return encoder.matches(rawPassword, encodedPassword);
+    }
+}