mybatis--resultMap的insert使用

mybatis使用实体类，在插入的时候，可以返回刚插入的数据，这个功能比较灵活。

1、oracle数据连接

jdbc.properties

driver=oracle.jdbc.driver.OracleDriver
url=jdbc:oracle:thin:@localhost:1521:XE
username=hr
password=hr

#url=jdbc:oracle:thin:@localhost:1521:XE

2、mybatis-config.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!-- 读取properties文件 -->
<properties resource="jdbc.properties"/>

<!--别名 这个放在开头位置，不然可能会报错-->
<typeAliases>
<typeAlias alias="Jobs" type="com.test.bean.Jobs"/>
</typeAliases>

<!-- 配置数据源 oracle-->
<environments default="development">
<environment id="development">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<property name="driver" value="${driver}"/>
<property name="url" value="${url}"/>
<property name="username" value="${username}"/>
<property name="password" value="${password}"/>
</dataSource>
</environment>
</environments>

<mappers>
<mapper resource="com/test/config/resultMap.xml"/>
</mappers>

</configuration>

3、实体类Jobs

package com.test.bean;

public class Jobs {
public Jobs() {
super();
}
private String JOB_ID;//职业Id
private String JOB_TITLE;//职业名称
private String MIN_SALARY;//最少薪水
private String MAX_SALARY;//最多薪水
public String getJOB_ID() {
return JOB_ID;
}
public void setJOB_ID(String jOB_ID) {
JOB_ID = jOB_ID;
}
public String getJOB_TITLE() {
return JOB_TITLE;
}
public void setJOB_TITLE(String jOB_TITLE) {
JOB_TITLE = jOB_TITLE;
}
public String getMIN_SALARY() {
return MIN_SALARY;
}
public void setMIN_SALARY(String mIN_SALARY) {
MIN_SALARY = mIN_SALARY;
}
public String getMAX_SALARY() {
return MAX_SALARY;
}
public void setMAX_SALARY(String mAX_SALARY) {
MAX_SALARY = mAX_SALARY;
}

}

4、mapper的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.test.bean">
<!-- type别名	id标识 -->
<resultMap type="Jobs" id="Jobs_Map">
<!-- id主键
result其他属性

property实体属性
column表对应字段
-->
<id property="JOB_ID" column="JOB_ID"/>
<result  property="JOB_TITLE" column="JOB_TITLE"/>
<result  property="MIN_SALARY" column="MIN_SALARY"/>
<result  property="MAX_SALARY" column="MAX_SALARY"/>
</resultMap>

<!-- 注：使用实体类的方式可以取得主键	mybatis自增主键，并返回 【两种方法】-->
<insert id="INSERT_resultMap" parameterType="Jobs" useGeneratedKeys="true" keyProperty="JOB_ID">
<!-- mysql和oracle不同 数据库要设置自增
<selectKey keyProperty="ID" resultType="String" order="BEFORE">
select yoursequence.nextval as "JOB_ID" from dual
</selectKey>
-->
insert into
JOBS(
JOB_ID,
JOB_TITLE,
MIN_SALARY,
MAX_SALARY)
values(
#{JOB_ID,jdbcType=VARCHAR},
#{JOB_TITLE,jdbcType=VARCHAR},
#{MIN_SALARY,jdbcType=VARCHAR},
#{MAX_SALARY,jdbcType=VARCHAR})
</insert>
</mapper>

5、测试

public void main(String[] arg){
Jobs jobs = new Jobs();
jobs.setJOB_TITLE("测试");
jobs.setMAX_SALARY("999");
jobs.setMIN_SALARY("1");

SqlSession session = SessionFactoryUtil.getSqlSessionFactory().openSession();
session.insert("INSERT_resultMap",jobs);
session.commit();
session.close();

System.out.println(jobs.getJOB_ID());
System.out.println(jobs.getJOB_TITLE());
System.out.println(jobs.getMAX_SALARY());
System.out.println(jobs.getMIN_SALARY());

}