spring boot2.0集成mybatis

新建

选择spring Initializr，选择mysql驱动和mybatis框架。

测试

• 准备数据库，创建user表，随便输入数据。

create database springboot_test;

create table person(
	id  int primary key auto_increment,
	name varchar(20),
	age int
)

• domain下Person类,需要get、set、无参方法和打印

public class Person {
    private int id;
    private String name;
    private int age;
}

• dao下PersonDao接口，里面编写一个全查方法：

public interface PersonDao {
    //全查
    List<Person> findAllPersons();
}

• 对应xml（映射文件，sql语句）

<?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.zsb.demo06mybatis.dao.PersonDao">
    <select id="findAllPersons" resultType="person">
        select * from person
    </select>
</mapper>

• 启动类中加接口地址

@MapperScan("com.zsb.demo06mybatis.dao")//存放接口

• application.yml配置文件

spring:
  datasource: # hikari
    driver-class-name: com.mysql.cj.jdbc.Driver # mysql 8
    username: root
    password:
    url: jdbc:mysql://localhost:3306/springboot_test?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8

mybatis:
  type-aliases-package: com.zsb.demo06mybatis.domain
  mapper-locations: classpath:com.zsb.demo06mybatis.dao/*.xml   #xml地址  可以写简洁点  可以不和接口对应
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

• 测试类

@Autowired
    PersonDao dao;
    //Alt+Enter修复  disabled inspection
    @Test
    void test01() {
        System.out.println(dao.findAllPersons());
    }