POM：
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<dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> <version>3.5.1</version></dependency><dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId></dependency><dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>2.1.4</version></dependency> |
如下图所示，mybatis-plus-boot-starter 已经引入了jdbc 所以无需在引入 jdbc的依赖
application.yaml:
只需要 填写数据源配置即可 。
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spring: datasource: url: jdbc:mysql://localhost:3306/kaoyan?serverTimezone=UTC password: admin username: root driver-class-name: com.mysql.cj.jdbc.Driver |
POJO：
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@Data@NoArgsConstructor@AllArgsConstructor@ToString@TableName(value = "user") // 指定查询的表名为 user public class UserPlus { // 以下为 mybatis-plus测试 private Integer id; private String name; private Integer age; private String email;} |
mapper接口：
特别简洁
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package com.hoan.demo03242.mapper;import com.baomidou.mybatisplus.core.mapper.BaseMapper;import com.hoan.demo03242.bean.UserPlus;public interface UserPlusMapper extends BaseMapper<UserPlus> {} |
包扫描：
测试：
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@SpringBootTestclass Demo03242ApplicationTests { @Autowired UserPlusMapper userPlusMapper; @Test void contextLoads() { UserPlus user = userPlusMapper.selectById(1); System.out.println(user.toString()); }} |
总结
本篇文章就到这里了，希望能够给你带来帮助，也希望您能够多多关注服务器之家的更多内容!
原文链接：https://blog.csdn.net/qq_44220795/article/details/123729806
