Spring Boot整合Mybatis 一篇超详细的Spring Boot整合Mybatis文章
牛哄哄的柯南 人气:0想了解一篇超详细的Spring Boot整合Mybatis文章的相关内容吗，牛哄哄的柯南在本文为您仔细讲解Spring Boot整合Mybatis的相关知识和一些Code实例，欢迎阅读和指正，我们先划重点：Spring,Boot,整合Mybatis，下面大家一起来学习吧。
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，是个三级目录，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，不是三级的，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
总结
本篇文章就到这里了，希望能给你带来帮助，也希望您能够多多关注的更多内容！
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