08_调用存储过程

create table p_user(  
	id int primary key auto_increment,  
	name varchar(10),
	sex char(2)
); 
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0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=0 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 = 0;
CALL mybatis.ges_user_count(1, @user_count);
SELECT @user_count;

public class PUser {
	private String id;
	private String name;
	private String sex;
｝

<mapper namespace="cn.imentors.mybatis.test8.userMapper">
	<!-- 
		查询得到男性或女性的数量, 如果传入的是0就女性否则是男性
		CALL mybatis.get_user_count(1, @user_count);
	 -->
	 <select id="getCount" statementType="CALLABLE" parameterMap="getCountMap">
	 	call mybatis.get_user_count(?,?)
	 </select>
	 <parameterMap type="java.util.Map" id="getCountMap">
	 	<parameter property="sexid" mode="IN" jdbcType="INTEGER"/>
	 	<parameter property="usercount" mode="OUT" jdbcType="INTEGER"/>
	 </parameterMap>
</mapper>

• <select>
  
• parameterMap:引用<parameterMap>
• statementType:指定statement的真实类型，CALLABLE执行调用存储过程的语句。
• <parameterMap>：定义多个参数的键值对
  
• type:需要传递的参数的真实类型,java.util.Map
• <parameter>：指定一个参数的key--value值，它的property对应的值是Map中的key值

@Test
	public void test() {
		SqlSessionFactory factory = MybatisUtils.getFactory();
		SqlSession session = factory.openSession();
		
		String statement = "cn.imentors.mybatis.test8.userMapper.getCount";
		
		Map<String, Integer> parameterMap = new HashMap<String, Integer>();
		parameterMap.put("sexid", 1);
		parameterMap.put("usercount", -1);
		session.selectOne(statement, parameterMap);
		//取值
		Integer result = parameterMap.get("usercount");
		System.out.println(result);
		session.close();
	}