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SpringBoot+Mybatis+Swagger实现用户注册、登录功能

Sky飞羽 2022-04-13 阅读 106
ideaspring bootjavamysql

文章目录

1.实现流程图

在这里插入图片描述

2.后台业务开发

  • 添加实体类（entity、beans、pojo）

    • 使用Easy Code插件快速生成,参考：https://blog.csdn.net/yinwq/article/details/106028976（可自行修改生成模板）
    @ApiModel(value = "User实体类", description = "用户(Users)实体类")
@Data
public class Users implements Serializable{
	private static final longserialVersionUID = 624362698554707695L;
	/** 主键id */
	@ApiModelProperty(value = "主键id")
	private Integer userId;
	/** 用户名 */
	@ApiModelProperty(value = "用户名")
	private String username;
	/** 密码 */
	@ApiModelProperty(value = "密码")
	private String password;
	/** 头像 */
	@ApiModelProperty(value = "头像")
	private String userImg;
	/** 注册时间 */
	@ApiModelProperty(value = "注册时间")
	private Date userRegtime;
	/** 更新时间 */
	@ApiModelProperty(value = "更新时间")
	private Date userModtime;
}

  • 完成DAO层

    • 创建DAO接口、自定义操作方法
    public interface UserDAO {
	// 添加用户
    int addUser(Users user);
    // 根据用户名查询用户
    Users getUserByName(String name);
}
    • 创建DAO接口对应的Mapper.xml文件并完成配置
    <?xml version="1.0" encoding="utf-8"?>
<!DOCTYPEmapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.cy.dao.UserDAO">
    <insert id="addUser">
		insert into users(username, password, user_img, user_regtime, user_modtime) values (#{username}, #{password}, #{userImg}, #{userRegtime}, #{userModtime})
	</insert>

    <select id="getUserByName" resultType="com.cy.entity.Users">
		SELECT 
			user_id as userId,
            username,
            password,
            user_img as userImg,
            user_regtime as userRegtime,
            user_modtime as userModtime
        FROM 
			users
        WHERE 
			username = #{name}
	</select>
</mapper>

  • 完成Service层

    • 创建Service接口、自定义操作方法
    public interface UserService {
	// 添加用户
    ResultVo addUser(String name, String password);
    // 根据用户名查询用户
    ResultVo checkLogin(String name, String password);
}
    • 创建Service接口对应的ServiceImpl实现类
    @Service
public class UserServiceImpl implements UserService {

	@Resource
    private UserDAO userDAO;

    @Transactional
    public ResultVo addUser(String name, String password) {
		synchronized(this) {
	        // 1. 根据用户名查询用户是否存在
            Users user = userDAO.getUserByName(name);

            // 2. 如果用户不存在，则添加用户
            if(user == null) {
			    String pwd = MD5Utils.md5(password);
                user = new Users();
                user.setUsername(name);
                user.setPassword(pwd);
                user.setUserImg("img/default.jpg");
                user.setUserRegtime(new Date());
                user.setUserModtime(new Date());
                int addUser = userDAO.addUser(user);
                if(addUser > 0) {
				    return new ResultVo(200, "注册成功", user);
			    }else{
					return new ResultVo(500, "注册失败", null);
				}
	        }else{
				// 3. 如果用户存在，则返回用户已存在
			    return new ResultVo(500, "用户已存在", null);
			}
		}
   }

	@Override
    public ResultVo checkLogin(String name, String password) {
		// 1. 根据用户名查询用户是否存在
        Users user = userDAO.getUserByName(name);
        if(user == null) {
			return new ResultVo(500, "用户不存在", null);
		} else {
			// 2. 如果用户存在，则校验密码是否正确
            String pwd = MD5Utils.md5(password);
            if(pwd.equals(user.getPassword())) {
				return new ResultVo(200, "登录成功", user);
			} else {
				return new ResultVo(500, "密码错误", null);
			}
        }
    }
}

  • 完成Controller层

    • 创建Controller类
    @RestController
@RequestMapping("/user")
@Api(tags = "用户管理模块")
public class UserController{

	@Resource
    private UserService userService;

    @PostMapping("/register")
	@ApiOperation("用户注册")
	@ApiImplicitParams({
		@ApiImplicitParam(name = "username",value = "用户名",dataType = "String",required = true),
        @ApiImplicitParam(name = "password",value = "密码",dataType = "String",required = true)
    })
	public ResultVo register(@RequestParam("username")String username, @RequestParam("password")String password) {
		return userService.addUser(username, password);
	}
		
	@GetMapping("/login")
	@ApiOperation("用户登录")
	@ApiImplicitParams({
		@ApiImplicitParam(name = "username",value = "用户名",dataType = "String",required = true),
        @ApiImplicitParam(name = "password",value = "密码",dataType = "String",required = true)
    })
	public ResultVo login(@RequestParam("username")String username, @RequestParam("password")String password) {
		return userService.checkLogin(username, password);
	}
}

  • 其他类和配置

    • 公用返回结果Vo
    @ApiModel(value = "ResultVo", description = "公用返回结果Vo")
@Data
@NoArgsConstructor
@AllArgsConstructor
public class ResultVo{

	@ApiModelProperty(value = "状态码", example = "200")
	private Integer code;

    @ApiModelProperty(value = "返回信息", example = "success")
	private String msg;

    @ApiModelProperty(value = "返回数据", example = "data")
	private Object data;
}
    • MD5Utils工具类
    public class MD5Utils{
	public static String md5(String password) {
		//生成一个md5加密器
	    try{
			MessageDigest md = MessageDigest.getInstance("MD5");
	        //计算MD5 的值
	        md.update(password.getBytes());
	        //BigInteger 将8位的字符串 转成16位的字符串 得到的字符串形式是哈希码值
	        //BigInteger(参数1,参数2) 参数1 是 1为正数 0为0 -1为负数
	        return new BigInteger(1, md.digest()).toString(16);
		} catch (NoSuchAlgorithmException e) {
				e.printStackTrace();
		}
		return null;
	}
}
    • 配置数据源
    # 配置数据源
spring:
  datasource:
    druid:
      driver-class-name: com.mysql.jdbc.Driver
      url: jdbc:mysql://localhost:3306/数据库?characterEncoding=utf-8&useSSL=false
      username: 数据库用户名
      password: 数据库密码
      # 初始化容器大小
      initial-size: 1
      # 最小连接数
      min-idle: 1
      # 最大连接数
      max-active: 20

# 配置映射文件路径及实体类包名
mybatis:
  type-aliases-package: com.cy.entity
  mapper-locations: classpath:mapper/*Mapper.xml
    • 启动类
    @SpringBootApplication
@MapperScan("com.cy.dao")
@ComponentScan(basePackages ={"com.cy"})
public class ApiApplication{
	public static void main(String[]args) {
		SpringApplication.run(ApiApplication.class, args);
	}
}
    • pom.xml
    <?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.12</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>mapper</artifactId>
    <packaging>jar</packaging>

    <properties>
        <java.version>1.8</java.version>
        <mysql.version>5.1.47</mysql.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
            <scope>runtime</scope>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.2.2</version>
        </dependency>
				
				<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>3.0.0</version>
        </dependency>

        <dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>knife4j-spring-boot-starter</artifactId>
            <version>3.0.3</version>
        </dependency>
    </dependencies>
</project>

3.启动项目,测试结果

  • swagger接口文档地址：http://localhost:8080/doc.html

在这里插入图片描述

在这里插入图片描述

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