SpringBoot整合Mybatis入门案列
1、 创建SpringBoot工程,引入依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</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-web</artifactId>
</dependency>
2、创建配置文件
在resources目录下创建springboot的配置文件,application.yml
在该文件中写mysql和mybatis的配置信息。数据库的配置信息因人而异
server:
port: 8080
spring:
datasource:
username: root
password: root
url: jdbc:mysql://localhost:3306/crud?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC
driver-class-name: com.mysql.jdbc.Driver
mybatis:
mapper-locations: classpath:mapper/*Mapper.xml
type-aliases-package: com.jd.entity
3、建立目录
其中mapper目录下保存mybatis的sql配置文件。
<?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.jd.dao.DeptMapper">
<resultMap id="deptMap" type="com.jd.entity.Dept">
<id column="dept_id" property="deptId"/>
<result column="dept_name" property="deptName"/>
</resultMap>
<select id="findAll" resultMap="deptMap">
select * from dept;
</select>
</mapper>
4、 启动类上加扫描注解
扫描dao所在的包,也可以在dao接口上加@Mapper注解
@SpringBootApplication
@MapperScan("com.jd.dao")
public class Main {
public static void main(String[] args) {
SpringApplication.run(Main.class,args);
}
}
5、启动
访问8080端口,就ok了。