Spring Boot基礎教程28-Spring Boot集成mybatis

一、 添加依賴 
<!-- mybatis -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.1.1</version>
</dependency> 
版本說明：最新 mybatis-spring-boot-starter 的版本爲 1.2.0-SNAPSHOT，依賴的是 spring 
boot 的 1.4.1，但是還不是 released 版本。教程的版本爲 1.1.1 依賴的 spring boot 的版本爲
1.3.3.RELEASE，兼容 spring boot 1.4.x。
GitHub: https://github.com/mybatis/spring-boot-starter
二、 基於 mybatis 註解的集成 
配置： 
#mysql
spring.datasource.url=jdbc:mysql://localhost/spring_boot_demo?
useUnicode=true&characterEncoding=utf-8
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
bean： 
package com.roncoo.example.bean;
import java.io.Serializable;
import java.util.Date;
public class RoncooUser implements Serializable {
private Integer id;
private String name;
private Date createTime;
private static final long serialVersionUID = 1L;
public Integer getId() {
return id;
}public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name == null ? null : name.trim();
}
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(getClass().getSimpleName());
sb.append(" [");
sb.append("Hash = ").append(hashCode());
sb.append(", id=").append(id);
sb.append(", name=").append(name);
sb.append(", createTime=").append(createTime);
sb.append(", serialVersionUID=").append(serialVersionUID);
sb.append("]");
return sb.toString();
}
}
mapper: 
package com.roncoo.example.mapper;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
import com.roncoo.example.bean.RoncooUser;@Mapper
public interface RoncooUserMapper {
@Insert(value = "insert into roncoo_user (name, 
create_time) values (#{name,jdbcType=VARCHAR}, 
#{createTime,jdbcType=TIMESTAMP})")
int insert(RoncooUser record);
@Select(value = "select id, name, create_time from 
roncoo_user where id = #{id,jdbcType=INTEGER}")
@Results(value = { @Result(column = "create_time", property 
= "createTime", jdbcType = JdbcType.TIMESTAMP) })
RoncooUser selectByPrimaryKey(Integer id);
}
test: 
package com.roncoo.example;
import java.util.Date;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import com.roncoo.example.bean.RoncooUser;
import com.roncoo.example.mapper.RoncooUserMapper;
@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringBootDemo281ApplicationTests {
@Autowired
private RoncooUserMapper mapper;
@Test
public void insert() {
RoncooUser roncooUser = new RoncooUser();
roncooUser.setName("測試");
roncooUser.setCreateTime(new Date());
int result = mapper.insert(roncooUser);
System.out.println(result);
}@Test
public void select() {
RoncooUser result = mapper.selectByPrimaryKey(2);
System.out.println(result);
}
}
三、 基於 mybatis xml 的集成 
配置: 
#mybatis
mybatis.mapper-locations: classpath:mybatis/*.xml
#mybatis.type-aliases-package: com.roncoo.example.bean
mapper: 
package com.roncoo.example.mapper;
import org.apache.ibatis.annotations.Mapper;
import com.roncoo.example.bean.RoncooUser;
@Mapper
public interface RoncooUserMapper {
int insert(RoncooUser record);
RoncooUser selectByPrimaryKey(Integer id);
}
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="com.roncoo.example.mapper.RoncooUserMapper" >
<resultMap id="BaseResultMap"
type="com.roncoo.example.bean.RoncooUser" >
<id column="id" property="id" jdbcType="INTEGER" />
<result column="name" property="name" jdbcType="VARCHAR" />
<result column="create_time" property="createTime"
jdbcType="TIMESTAMP" />
</resultMap><sql id="Base_Column_List" >
id, name, create_time
</sql>
<select id="selectByPrimaryKey" resultMap="BaseResultMap"
parameterType="java.lang.Integer" >
select 
<include refid="Base_Column_List" />
from roncoo_user
where id = #{id,jdbcType=INTEGER}
</select>
<insert id="insert"
parameterType="com.roncoo.example.bean.RoncooUser" >
insert into roncoo_user (id, name, create_time)
values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, 
#{createTime,jdbcType=TIMESTAMP})
</insert>
</mapper>
如何快速批量生成 bean，mapper，xml？ 
使用 mybatis generator，龍果開源了 roncoo-mybatis-generator，集成了多個插件 
GitHub: https://github.com/roncoo/roncoo-mybatis-generator