SpringBoot整合Mybatis

1、依赖在上一篇随笔中已经导入，这里不再展示

2、数据源信息也上一篇随笔中已经配置过

3、编写pojo对象MUser

package com.offcn.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import javax.persistence.*;

@Entity
@Data
@NoArgsConstructor
@AllArgsConstructor
@Table(name = "user")
public class MUser {

   @Id
   @GeneratedValue(strategy = GenerationType.IDENTITY)
   private Integer uid;
   private String uname;
   private String pwd;
   private String gender;
   private String phone;
}

4、MUserMapper接口

package com.offcn.mapper;

import com.offcn.pojo.MUser;

import java.util.List;

public interface MUserMapper {
   List<MUser> getUserList();
}

5、MUserMapper.xml映射文件

<?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.offcn.mapper.MUserMapper">
    <select id="getUserList" resultType="com.offcn.pojo.MUser">
    select * from user
  </select>
</mapper>

6、在主启动类上配置扫描mybatis的包

package com.offcn;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * @author yy
 * @date 2019/11/5 9:56
 */
@MapperScan("com.offcn.mapper")
@SpringBootApplication
public class HelloApplication {
   public static void main(String[] args) {
      SpringApplication.run(HelloApplication.class,args);
   }
}

如果启动错误可以将映射文件放在resources文件目录下试试