调用存储过程

 调用存储过程

delimiter $$
create procedure getUserCount (in userName varchar(200), out userCount int)
begin
if userName='shanshanbox' then
	select count(*) from users where name = 'shanshanbox' into userCount;
else
	select count(*) from users where name = 'hous' into userCount;
end if;
end
$$
delimiter ;

 

set @userCount=0;

call getUserCount('shanshanbox',@userCount);

select @userCount;

 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> 
<mapper namespace="com.hous.day7.userMapper">
	<select id="getUserCount" parameterMap="getParameterMap" statementType="CALLABLE">
		call mybatis.getUserCount(?,?)
	</select>
	
	<parameterMap type="java.util.Map" id="getParameterMap">
		<parameter property="username" mode="IN" jdbcType="VARCHAR"/>
		<parameter property="usercount" mode="OUT" jdbcType="INTEGER"/>
	</parameterMap>
</mapper>

 

package com.hous.day7;

import static org.junit.Assert.*;

import java.io.InputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Before;
import org.junit.Test;

public class MyTest {
	
	private SqlSessionFactory factory = null;
	
	@Before
	public void setUp() throws Exception {
		String resource = "day7/config.xml";
		InputStream config = MyTest.class.getClassLoader().getResourceAsStream(resource);
		factory = new SqlSessionFactoryBuilder().build(config);
	}

	@Test
	public void testGetUserCount() {
		SqlSession session = factory.openSession();
		String statement = "com.hous.day7.userMapper.getUserCount";
		Map<String, Object> map = new HashMap<>();
		map.put("username", "shanshanbox");
		map.put("usercount", -1);
		
		session.selectOne(statement, map);
		int userCount = (int) map.get("usercount");
		
		session.close();
		System.out.println("调用存储过程查询结果：" + userCount);
	}

}

 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
	
	<environments default="development">
		<environment id="development">
			<transactionManager type="JDBC"/>
			<dataSource type="POOLED">
				<property name="driver" value="com.mysql.jdbc.Driver"/>
				<property name="url" value="jdbc:mysql://localhost:3306/mybatis"/>
				<property name="username" value="root" />
				<property name="password" value="root" />
			</dataSource>
		</environment>
	</environments>
	
	<mappers>
		<mapper resource="com/hous/day7/userMapper.xml" />
	</mappers>
</configuration>