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;

   
     CALL mybatis.ges_user_count(?,?)
     
   
   
     
     
   

 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 Test6 {
   
   @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 parameterMap = new HashMap();
     parameterMap.put("sexid", 1);
     parameterMap.put("usercount", -1);
     sqlSession.selectOne(statement, parameterMap);
     Integer result = parameterMap.get("usercount");
     System.out.println(result);
     sqlSession.close();
   }
 }