本文主要讲解如何在Springboot中逐步实现对mybatis的集成应用。
1、引入依赖
在pom.xml文件中引入mybatis依赖
// pom.xml
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
</dependency>
2、参数配置
mybatis:
mapper-locations: classpath:mybatis/mapper/**/*.xml #注意：一定要对应mapper映射xml文件的所在路径
type-aliases-package: com.knight.ygtcloud.base.entity # 注意：对应实体类的路径
# spring boot集成mybatis的方式打印sql
configuration:
log-impl: org.apache.ibatis.logging.nologging.NoLoggingImpl #不打印SQL
map-underscore-to-camel-case: true #开启自动下划线格式转驼峰格式
3、mapper文件
编写mapper文件如下：
public interface SysUserMapper {
int deleteByPrimaryKey(Long id);
int insert(SysUser record);
int insertSelective(SysUser record);
SysUser selectByPrimaryKey(Long id);
int updateByPrimaryKeySelective(SysUser record);
int updateByPrimaryKey(SysUser record);
}
4、MapperScan注解
在主应用Application上通过@MapperScan注解指定mapper文件的扫描路径
@MapperScan("com.myApp.dao")
public class MyApplication {
public static void main(String[] args) {
SpringApplication.run(MyApplication .class, args);
}
}
5、xml映射文件
在配置文件指定路径（classpath:mybatis/mapper/**/*.xml）下编写mapper对应的xml映射文件，参考内容如下：
<?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.knight.ygtcloud.base.dao.SysUserMapper">
<resultMap id="BaseResultMap" type="com.knight.ygtcloud.base.entity.SysUser">
<id column="id" jdbcType="BIGINT" property="id" />
<result column="login_name" jdbcType="VARCHAR" property="loginName" />
<result column="mix_pd" jdbcType="VARCHAR" property="mixPd" />
<result column="user_name" jdbcType="VARCHAR" property="userName" />
<
</resultMap>
<sql id="Base_Column_List">
id, login_name, mix_pd, user_name, user_type, user_code, sex, note, mobile, dept_first_id,
dept_first_name, dept_second_id, dept_second_name, org_id, org_name, email, state,
openId, userId, create_time, create_id, create_name, head_image, phone_image, lock_times,
lock_time, account_type, tech_title_key, tech_title_value, is_expert, sickness_id_list,
sickness_name_list, duty_key, duty_value, education_key, education_value, create_org_id,
create_org_name, wx_nick_name, wx_country, wx_province, wx_city, belong_org_province_id,
belong_org_province_name, belong_org_city_id, belong_org_city_name, belong_org_county_id,
belong_org_county_name, belong_org_town_id, belong_org_town_name, belong_org_village_id,
belong_org_village_name, online_state
</sql>
<select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
select
<include refid="Base_Column_List" />
from sys_user
where id = #{id,jdbcType=BIGINT}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
delete from sys_user
where id = #{id,jdbcType=BIGINT}
</delete>
</mapper>
