一篇超详细的Spring Boot整合Mybatis文章
大家都知道springboot搭建一个spring框架只需要秒秒钟。下面通过实例代码给大家介绍一下springboot与mybatis的完美融合，非常不错，具有参考借鉴价值，感兴趣的朋友一起看看吧配置文件形式
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CodeAE代码之家的更多内容！
原文链接：https://blog.csdn.net/weixin_43883917/article/details/115528174
http://www.zzvips.com/article/199549.html
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