MyBatis学习教程(六)-调用存储过程

create table p_user( 
id int primary key auto_increment, 
name varchar(),
sex char()
); 
insert into p_user(name,sex) values('A',"男"); 
insert into p_user(name,sex) values('B',"女"); 
insert into p_user(name,sex) values('C',"男"); 
-- 创建存储过程(查询得到男性或女性的数量, 如果传入的是就女性否则是男性)
DELIMITER $
CREATE PROCEDURE mybatis.ges_user_count(IN sex_id INT, OUT user_count INT)
BEGIN 
IF sex_id= THEN
SELECT COUNT(*) FROM mybatis.p_user WHERE p_user.sex='女' INTO user_count;
ELSE
SELECT COUNT(*) FROM mybatis.p_user WHERE p_user.sex='男' INTO user_count;
END IF;
END 
$
-- 调用存储过程
DELIMITER ;
SET @user_count = ;
CALL mybatis.ges_user_count(, @user_count);
SELECT @user_count; 

<!-- 
查询得到男性或女性的数量, 如果传入的是就女性否则是男性
-->
<select id="getUserCount" parameterMap="getUserCountMap" statementType="CALLABLE">
CALL mybatis.ges_user_count(?,?)
</select>
<!--
parameterMap.put("sexid", );
parameterMap.put("usercount", -);
-->
<parameterMap type="java.util.Map" id="getUserCountMap">
<parameter property="sexid" mode="IN" jdbcType="INTEGER"/>
<parameter property="usercount" mode="OUT" jdbcType="INTEGER"/>
</parameterMap> 

package me.gacl.test;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import me.gacl.custom.model.ConditionUser;
import me.gacl.domain.User;
import me.gacl.util.MyBatisUtil;
import org.apache.ibatis.session.SqlSession;
import org.junit.Test;
/**
* @author gacl
* 测试调用存储过程
*/
public class Test {
@Test
public void testGetUserCount(){
SqlSession sqlSession = MyBatisUtil.getSqlSession();
/**
* 映射sql的标识字符串，
* me.gacl.mapping.userMapper是userMapper.xml文件中mapper标签的namespace属性的值，
* getUserCount是select标签的id属性值，通过select标签的id属性值就可以找到要执行的SQL
*/
String statement = "me.gacl.mapping.userMapper.getUserCount";//映射sql的标识字符串
Map<String, Integer> parameterMap = new HashMap<String, Integer>();
parameterMap.put("sexid", );
parameterMap.put("usercount", -);
sqlSession.selectOne(statement, parameterMap);
Integer result = parameterMap.get("usercount");
System.out.println(result);
sqlSession.close();
}
}