MyBatis学习总结(六)——调用存储过程详解编程语言

 1 create table p_user(   
 2     id int primary key auto_increment,   
 3     name varchar(10), 
 4     sex char(2) 
 5 );  
 6  
 7 insert into p_user(name,sex) values('A',"男");   
 8 insert into p_user(name,sex) values('B',"女");   
 9 insert into p_user(name,sex) values('C',"男");   
10  
11 -- 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) 
12 DELIMITER $ 
13 CREATE PROCEDURE mybatis.ges_user_count(IN sex_id INT, OUT user_count INT) 
14 BEGIN   
15 IF sex_id=0 THEN 
16 SELECT COUNT(*) FROM mybatis.p_user WHERE p_user.sex='女' INTO user_count; 
17 ELSE 
18 SELECT COUNT(*) FROM mybatis.p_user WHERE p_user.sex='男' INTO user_count; 
19 END IF; 
20 END  
21 $ 
22  
23 -- 调用存储过程 
24 DELIMITER ; 
25 SET @user_count = 0; 
26 CALL mybatis.ges_user_count(1, @user_count); 
27 SELECT @user_count;

 1 <!--  
 2         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 
 3      --> 
 4     <select id="getUserCount" parameterMap="getUserCountMap" statementType="CALLABLE"> 
 5         CALL mybatis.ges_user_count(?,?) 
 6     </select> 
 7      
 8     <!-- 
 9         parameterMap.put("sexid", 0); 
10         parameterMap.put("usercount", -1); 
11      --> 
12     <parameterMap type="java.util.Map" id="getUserCountMap"> 
13         <parameter property="sexid" mode="IN" jdbcType="INTEGER"/> 
14         <parameter property="usercount" mode="OUT" jdbcType="INTEGER"/> 
15     </parameterMap>

 1 package me.gacl.test; 
 2  
 3 import java.util.HashMap; 
 4 import java.util.List; 
 5 import java.util.Map; 
 6  
 7 import me.gacl.custom.model.ConditionUser; 
 8 import me.gacl.domain.User; 
 9 import me.gacl.util.MyBatisUtil; 
10 import org.apache.ibatis.session.SqlSession; 
11 import org.junit.Test; 
12  
13 /** 
14  * @author gacl 
15  * 测试调用存储过程 
16  */ 
17 public class Test6 { 
18      
19     @Test 
20     public void testGetUserCount(){ 
21         SqlSession sqlSession = MyBatisUtil.getSqlSession(); 
22         /** 
23          * 映射sql的标识字符串， 
24          * me.gacl.mapping.userMapper是userMapper.xml文件中mapper标签的namespace属性的值， 
25          * 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 
26          */ 
27         String statement = "me.gacl.mapping.userMapper.getUserCount";//映射sql的标识字符串 
28         Map<String, Integer> parameterMap = new HashMap<String, Integer>(); 
29         parameterMap.put("sexid", 1); 
30         parameterMap.put("usercount", -1); 
31         sqlSession.selectOne(statement, parameterMap); 
32         Integer result = parameterMap.get("usercount"); 
33         System.out.println(result); 
34         sqlSession.close(); 
35     } 
36 }