mybatis调用存储过程

#表
DROP TABLE IF EXISTS `p_user`;
CREATE TABLE `p_user` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(10) DEFAULT NULL,
`sex` char(2) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;

#模拟数据
INSERT INTO `p_user` VALUES ('1', 'A', '男');
INSERT INTO `p_user` VALUES ('2', 'B', '女');
INSERT INTO `p_user` VALUES ('3', 'C', '男');
#存储过程
CREATE PROCEDURE ges_user_count(OUT user_count int)
BEGIN
IF sex_id=0 THEN
SELECT COUNT(*) FROM p_user WHERE p_user.sex='女' INTO user_count;
ELSE
SELECT COUNT(*) FROM p_user WHERE p_user.sex='男' INTO user_count;
END IF;
END

<!-- parameterMap.put("sexid", 0); parameterMap.put("usercount", -1); -->
<parameterMap type="java.util.Map" id="getUserCountMap">
<parameter property="sexid" mode="IN" jdbcType="INTEGER" />
<parameter property="usercount" mode="OUT" jdbcType="INTEGER" />
</parameterMap>
<!-- 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 statementType="CALLABLE"存储过程类型 -->
<select id="getUserCount" parameterMap="getUserCountMap"
statementType="CALLABLE">
CALL ges_user_count(?,?)
</select>

//接口
public interface UserMapper {
public int getUserCount();
}
//实现类 我用spring的自动注入 也可以通过实例化来new SqlSessionFactory
package com.dw.user.dao;

import java.util.HashMap;
import java.util.Map;

import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
@Repository("userMapper")
public class UserMapperImpl implements UserMapper{
//注入SqlSessionFactory
@Autowired
SqlSessionFactory sessionFactory;

public void setSessionFactory(SqlSessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
@Override
public int getUserCount() {
SqlSession sqlSession = sessionFactory.openSession();
Map<String, Integer> parameterMap = new HashMap<String, Integer>();
//设置参数
parameterMap.put("sexid", 1);
parameterMap.put("usercount", -1);
//Integer i =
sqlSession.selectOne("com.dw.user.dao.UserMapper.getUserCount",parameterMap);
Integer i = parameterMap.get("usercount");
System.out.println(i);
sqlSession.close();
return i;
}
}