JTW——03，springboot整合JWT-二、搭建环境

1、数据库

就是一个表，三个字段

创建一个springboot项目，省略了。。。。

2、导入依赖包

mysql，lombok，mybatis-plus，jwt

		<dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.0.5</version>
        </dependency>

        <dependency>
            <groupId>com.auth0</groupId>
            <artifactId>java-jwt</artifactId>
            <version>3.4.0</version>
        </dependency>

3、数据库配置文件

#数据库连接配置
spring.datasource.username=root
spring.datasource.password=123456
#mysql5~8 驱动不同driver-class-name     8需要增加时区的配置serverTimezone=UTC
#useSSL=false 安全连接
spring.datasource.url=jdbc:mysql://localhost:3306/mybatis_plus_study_one?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

4、封装JWT工具类

public class JWTUtils {
    private static String SECRET = "token!Q@W#E$R";

    /**
     * 生产token
     */
    public static String getToken(Map<String, String> map) {
        JWTCreator.Builder builder = JWT.create();

        //payload
        map.forEach((k, v) -> {
            builder.withClaim(k, v);
        });

        Calendar instance = Calendar.getInstance();
        instance.add(Calendar.DATE, 7); //默认7天过期

        builder.withExpiresAt(instance.getTime());//指定令牌的过期时间
        String token = builder.sign(Algorithm.HMAC256(SECRET));//签名
        return token;
    }

    /**
     * 验证token
     */
    public static DecodedJWT verify(String token) {
        //如果有任何验证异常，此处都会抛出异常
        DecodedJWT decodedJWT = JWT.require(Algorithm.HMAC256(SECRET)).build().verify(token);
        return decodedJWT;
    }

}

5、实体类

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Admin {

    @TableId(type = IdType.AUTO)
    private Integer id;
    private String name;
    private String password;
}

6、service

public interface AdminService extends IService<Admin> {
    /**
     * 登录接口
     *
     * @param admin 表单中的user
     * @return 数据库中查询到的User
     */
    Admin login(Admin admin);
}

7、servicelmpl

@Service
public class AdminServiceImpl extends ServiceImpl<AdminMapper, Admin> implements AdminService {

    @Autowired
    private AdminMapper adminMapper;

    @Override
    public Admin login(Admin admin) {
        QueryWrapper<Admin> wrapper = new QueryWrapper<>();
        wrapper.eq("name",admin.getName());
        wrapper.eq("password",admin.getPassword());
        System.out.println(admin.getName());
        System.out.println(admin.getPassword());
        //若出现多个结果使用list或map
        Admin adminDB = adminMapper.selectOne(wrapper); //查询一个数据，若出现多个结果使用list或map

        if (adminDB != null) {
            return adminDB;
        }
        throw new RuntimeException("认证失败");
    }

}

8、mapper

@Repository
public interface AdminMapper extends BaseMapper<Admin> {
}

完成的目录结构如下：