Springboot如何整合Mybatis框架呢？
SpringBoot整合Mybatis框架只需引入MyBatis起步依赖

一、引入MyBatis起步依赖

搭建好SpringBoot工程后，在pom.xml中引入起步依赖，以及mysql驱动（不同数据库需添加不同驱动包）

        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>3.0.0</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.30</version>
            <scope>runtime</scope>
        </dependency>

二、编写DataSource和MyBatis相关配置

1.在application.yml或者application.properties中编写DataSource

代码如下（示例）：

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/XXX?useSSL=false&useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai
    driver-class-name: com.mysql.cj.jdbc.Driver
    password: adminLp
    username: root

三.编写实体类

代码如下（示例）：

public class User {
    int id;
    String name;
    int age;

    public User() {
    }

    public User(int id, String name, int age) {
        this.id = id;
        this.name = name;
        this.age = age;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}

四、编写mapper接口

@Mapper
public interface UserDaoXml {
    List<User> findAll();
}

resources下建立xml文件 UserMapper.xml

<?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="org.elp.dao.UserDaoXml">

    <select id="findAll" resultType="org.elp.pojo.User">
        select * from user
    </select>
</mapper>

五、修改application.yml 新增如下配置

mybatis:
  mapper-locations: classpath:mapper/*

最后启动测试类即可