MyBatis-Plus初试锋芒！！！！太强大了！！！

怼烎@ 2024-03-23 18:24 60阅读 0赞

代码：

连接数据库的配置文件

pojo包下

dao包下

测试

运行结果

数据库中的数据

--------------------

## MyBatis-Plus初试锋芒！！！！太强大了！！！ ##

### 代码： ###

#### 连接数据库的配置文件 ####

spring:
      datasource:
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://localhost:3306/test # ?serverTimezone=UTC
        username: root
        password: root

#### pojo包下 ####

package com.dong.domian;
    
    public class User {
        private int userid;
        private String username;
        private String sex;
    
        @Override
        public String toString() {
            return "User{" +
                    "userid=" + userid +
                    ", username='" + username + '\'' +
                    ", sex='" + sex + '\'' +
                    '}';
        }
    
        public int getUserid() {
            return userid;
        }
    
        public void setUserid(int userid) {
            this.userid = userid;
        }
    
        public String getUsername() {
            return username;
        }
    
        public void setUsername(String username) {
            this.username = username;
        }
    
        public String getSex() {
            return sex;
        }
    
        public void setSex(String sex) {
            this.sex = sex;
        }
    }

#### dao包下 ####

package com.dong.dao;
    
    import com.baomidou.mybatisplus.core.mapper.BaseMapper;
    import com.dong.domian.User;
    import org.apache.ibatis.annotations.Mapper;
    
    @Mapper
    public interface UserDao extends BaseMapper<User> {
    }

#### 测试 ####

package com.dong;
    
    import com.dong.dao.UserDao;
    import com.dong.domian.User;
    import org.junit.jupiter.api.Test;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    
    import java.util.List;
    
    @SpringBootTest
    class MybatisPlus01QuikstartApplicationTests {
    
        @Autowired
        private UserDao userDao;
        @Test
        void testGetAll() {
            List<User> users = userDao.selectList(null);
            System.out.println(users);
        }
    
    }

### 运行结果 ###

![77ec50ee99294ce7b53cf4b0c18a9183.png][]

#### 数据库中的数据 ####

![f41d72686e6c4425b8e8fb685be4b311.png][]

[77ec50ee99294ce7b53cf4b0c18a9183.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/6040150cc056473cb99a21933b0653b5.png
[f41d72686e6c4425b8e8fb685be4b311.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/d027006abba04476bedf8bc32f0f616d.png