一篇超详细的Spring Boot整合Mybatis文章
作者:牛哄哄的柯南 时间:2022-01-27 10:02:58
配置文件形式
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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.4</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.keafmd</groupId>
<artifactId>spring-boot-09-mybatis</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-boot-09-mybatis</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<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>1.3.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
配置数据源
在yml文件中配置数据源。
application.yml:
server:
port: 80
# 配置数据源
spring:
datasource:
url: jdbc:mysql://127.0.0.1:3306/ssm-java1?useSSL=false
driver-class-name: com.mysql.cj.jdbc.Driver
username: root
password: 18044229
# 整合mybatis
mybatis:
# typeAliasesPackage: com.neuedu.entity
mapper-locations: classpath*:com/neuedu/boot/mapper/*.xml
UserMapper.xml
这里注意!!!:一定是和UserMapper相同的目录,是个 * 目录,创建时仿照这样创建com/keafm/mapper(正确的) 别这样com.keafam.mapper(错误的),这样错误的创建的话,是个一级目录,不是 * 的,后面运行的时候可能会提示找不到Mapper。
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.keafmd.mapper.UserMapper">
<select id="list" resultType="map">
select * from user
</select>
</mapper>
UserMapper
package com.keafmd.mapper;
import org.apache.ibatis.annotations.Mapper;
import java.util.List;
/**
* Keafmd
*
* @ClassName: UserMapper
* @Description:
* @author: 牛哄哄的柯南
* @Date: 2021-04-08 16:09
* @Blog: https://keafmd.blog.csdn.net/
*/
public interface UserMapper {
List list();
}
配置springboot整合mybatis
在application.yml中配置:
# 整合mybatis
mybatis:
# typeAliasesPackage: com.neuedu.entity
mapper-locations: classpath*:com/neuedu/boot/mapper/*.xml
在运行类上添加@MapperScan注解
SpringBoot09MybatisApplication:
package com.keafmd;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
@MapperScan("com.keafmd.mapper")
public class SpringBoot09MybatisApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBoot09MybatisApplication.class, args);
}
}
测试类
UserMapperTest :
package com.keafmd.mapper;
import com.keafmd.SpringBoot09MybatisApplication;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import java.util.List;
import static org.junit.jupiter.api.Assertions.*;
@SpringBootTest(classes = SpringBoot09MybatisApplication.class)
class UserMapperTest {
@Autowired
UserMapper userMapper;
@Test
void list(){
List list = userMapper.list();
for (Object o : list) {
System.out.println(o);
}
}
}
效果
来源:https://blog.csdn.net/weixin_43883917/article/details/115528174
标签:SpringBoot,Mybatis
![](/images/zang.png)
![](/images/jiucuo.png)
猜你喜欢
java HashMap和HashTable的区别详解
2023-08-10 18:41:56
Java NIO中四大核心组件的使用详解
2023-10-19 17:05:13
Java String类字符串的理解与认知
2022-05-10 17:27:12
![](https://img.aspxhome.com/file/2023/5/60825_0s.png)
Java实现调用外部程序的示例代码
2023-11-10 06:43:12
![](https://img.aspxhome.com/file/2023/2/59212_0s.png)
Android基于TextView实现跑马灯效果
2023-07-25 06:32:45
基于WebClient实现Http协议的Post与Get对网站进行模拟登陆和浏览实例
2022-06-24 08:07:48
Java线程创建的四种方式总结
2023-10-29 19:36:03
![](https://img.aspxhome.com/file/2023/7/58697_0s.png)
关于Mybatis-Plus Wrapper是否应该出现在Servcie类中
2023-11-28 22:04:56
Java SpringBoot整合SpringCloud
2022-11-11 15:07:46
![](https://img.aspxhome.com/file/2023/2/63002_0s.png)
Servlet中/和/*的区别详解
2022-07-11 03:21:33
![](https://img.aspxhome.com/file/2023/2/65772_0s.png)
安卓GreenDao框架一些进阶用法整理
2023-06-17 03:27:21
java 线程方法join简单用法实例总结
2022-10-26 19:27:38
java中sleep方法和wait方法的五个区别
2023-08-27 18:37:23
![](https://img.aspxhome.com/file/2023/5/61035_0s.webp)
java list随机抽取元素的案例
2023-12-22 22:21:59
![](https://img.aspxhome.com/file/2023/0/71920_0s.jpg)
Java高性能序列化工具Kryo详情
2021-11-02 16:42:00
![](https://img.aspxhome.com/file/2023/9/68499_0s.png)
java日期操作工具类(获取指定日期、日期转换、相隔天数)
2023-11-28 06:42:53
SpringMVC用JsonSerialize日期转换方法
2021-12-06 10:59:59
![](https://img.aspxhome.com/file/2023/2/70332_0s.jpg)
SpringBoot如何进行对象复制的实践
2023-11-23 03:40:19
![](https://img.aspxhome.com/file/2023/5/59935_0s.jpg)
Java 8实现图片BASE64编解码
2022-08-22 05:35:05
![](https://img.aspxhome.com/file/2023/1/68521_0s.png)
5分钟快速学会spring boot整合JdbcTemplate的方法
2022-04-01 15:56:11
![](https://img.aspxhome.com/file/2023/6/61296_0s.jpg)