【Springboot】——从零开始带你搭建一个Springboot+MyBatisPlus+Redis+JWT初始工程

Y小夜

已于 2025-03-31 11:05:13 修改

阅读量900

点赞数 19

分类专栏： Springboot 文章标签： spring boot redis java

于 2025-03-31 10:42:33 首次发布

本文链接：https://blog.youkuaiyun.com/shsjssnn/article/details/145542962

版权

Springboot 专栏收录该内容

16 篇文章

订阅专栏

🎼个人主页：【Y小夜】

😎作者简介：一位双非学校的大三学生，编程爱好者，

专注于基础和实战分享，欢迎私信咨询！

🎆入门专栏：🎇【MySQL，Java基础，Rust】

🎈热门专栏：🎊【Python，Javaweb，Springboot】

感谢您的点赞、关注、评论、收藏、是对我最大的认可和支持！❤️

🎈创建工程引入依赖

首先自己先建立一个Springboot工程，直接引入一些所需要的依赖。

下面是我自己的依赖

<!--        自动添加的-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>3.0.4</version>
        </dependency>
        <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>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter-test</artifactId>
            <version>3.0.4</version>
            <scope>test</scope>
        </dependency>
<!--        MyBatisPlus核心库-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.5.5</version>
        </dependency>
<!--        SpringUtils工具-->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.5</version>
        </dependency>
<!--        redis工具-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
<!--        jwt依赖-->
        <dependency>
            <groupId>com.auth0</groupId>
            <artifactId>java-jwt</artifactId>
            <version>3.8.3</version>
        </dependency>
<!--        json工具-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.45</version>
        </dependency>

创建工程后，生成的格式

🎈进行配置

将配置文件改为application.yml

server:
  port: 8080
spring:
  application:
    name: one
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/one?useSSL=false&serverTimezone=UTC
    username: root
    password: 密码
  data:
    redis:
      host: localhost
      port: 6379
      password: 密码
      lettuce:
        pool:
          max-active: 10
          max-idle: 10
          min-idle: 1
          time-between-eviction-runs: 10s
      database: 1
  jackson:
    default-property-inclusion: non_null # JSON处理时忽略非空字段
mybatis-plus:
  type-aliases-package: com.hmdp.entity # 别名扫描包

🎈编写代码

🎉编写实体类

创建entity包，编写User类

package com.yan.one.entity;

import com.baomidou.mybatisplus.annotation.TableName;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.experimental.Accessors;

@Data
@AllArgsConstructor
@NoArgsConstructor
@TableName("user")
//允许链式调用set方法
@Accessors(chain = true)
public class User {
    private String id;
    private String name;
    private String password;
}

这里注意，有可能lombok这些注释后面没有办法使用，所以记得提前将pom.xml中的自动生成的lombok插件进行初始掉。

🎉编写工具类

✨Result类

package com.yan.one.utils;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.util.List;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Result {
    private  Boolean success;
    private  String errorMsg;
    private  Object data;
    private  Long total;

    public static  Result ok(){
        return new Result(true,null,null,null);
    }
    public static Result ok(Object data){
        return new Result(true, null, data, null);
    }
    public static Result ok(List<?> data, Long total){
        return new Result(true, null, data, total);
    }
    public static Result fail(String errorMsg){
        return new Result(false, errorMsg, null, null);
    }
}

✨JWTUtils类

package com.yan.one.utils;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.DecodedJWT;

import java.util.Calendar;
import java.util.Map;

public class JWTUtils {
    //设置签名常量
    private  static final  String SING="YSA";

    /**
     * 生成token
     * @param map
     * @return
     */
    public  static  String getToken(Map<String,String> map){
        //获取当前时间实例
        Calendar instance = Calendar.getInstance();
        //设置有效时间
        instance.add(Calendar.HOUR,10);
        //创建jWT构造器
        JWTCreator.Builder builder = JWT.create();
//        将传入的声明添加到payload
        map.forEach(builder::withClaim);
//        指定过期时间和签名算法
        String token = builder.withExpiresAt(instance.getTime()).sign(Algorithm.HMAC256(SING));
        return token;
    }

    /**
     * 验证token
     * @param token
     * @return
     */
    public  static DecodedJWT verify(String token){
        return JWT.require(Algorithm.HMAC256(SING)).build().verify(token);
    }

}

🎉编写业务类

✨IUserService类

package com.yan.one.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.yan.one.entity.User;
import com.yan.one.utils.Result;

public interface IUserService extends IService<User> {
//    登录功能开发
    Result login(User user);
}

✨UserMapper类

package com.yan.one.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.yan.one.entity.User;
import org.apache.ibatis.annotations.Mapper;

public interface UserMapper extends BaseMapper<User> {
}

✨UserServiceImpl类

package com.yan.one.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.yan.one.entity.User;
import com.yan.one.mapper.UserMapper;
import com.yan.one.service.IUserService;
import com.yan.one.utils.JWTUtils;
import com.yan.one.utils.Result;
import jakarta.annotation.Resource;
import lombok.extern.slf4j.Slf4j;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.concurrent.TimeUnit;

@Service
@Slf4j
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {
    @Resource
    private StringRedisTemplate stringRedisTemplate;
    //登录功能开发
    @Override
    public Result login(User user) {
        String name=user.getName();
        String password=user.getPassword();
        User user1=query().eq("name",name).eq("password",password).one();
        if (user1==null){
            return Result.fail("登录失败");
        }
        HashMap<String, String> map = new HashMap<>();
        map.put("name",name);
        map.put("password",password);
        //生成jwt令牌
        String token = JWTUtils.getToken(map);
        //将令牌存入redis中
        String id = user1.getId();
        stringRedisTemplate.opsForValue().set("Usr_"+id,token,2L, TimeUnit.HOURS);
        map.put("token",token);
        return Result.ok(map);
    }

}

🎉编写JWT测试类

package com.yan.one;

import com.yan.one.utils.JWTUtils;
import org.junit.jupiter.api.Test;

import java.util.HashMap;
import java.util.Map;

public class JWTTest {
    @Test
    public void test1(){
        Map<String, String> map=new HashMap<>();
        map.put("1","123456");
        String token= JWTUtils.getToken(map);
        System.out.println(token);
    }
    @Test
    public void  test2(){
        String s="eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyIxIjoiMTIzNDU2IiwiZXhwIjoxNzM5MTE0NjkyfQ.xy58bv16MwjrdaKUm44a14dkCs1M48jwrvPZV0XGKxs";
        System.out.println(JWTUtils.verify(s));
    }
}

🎈构建数据库

创建one数据库，然后创建user表，插入一条数据

最后使用apifox进行测试

{
    "name": "aaa",
    "password": "123"
}

测试成功！

redis中也有数据