最近，有个开发提了个需求，希望中间件支持调用mysql存储过程时支持多结果集返回，因为某些原因我们使用了不少的存储过程，很多复杂的逻辑目前来看交互非常的多，所以从当前的现状来说，这个需求还是蛮合理的。中午抽空特地搜了下，整合完整示例如下：
1、创建测试存储过程
delimiter $$
CREATE PROCEDURE sp_multi_resultset(IN p_operator_company_no int,
IN p_operator_no int,
OUT p_error_code varchar(32),
OUT p_error_info varchar(255))
BEGIN
select 1 as col1,2 as col2;
select 11 as col11,22 as col21;
end $$ delimiter ; call sp_multi_resultset(1,1,@error_code,@error_info);
2、mapper文件
<?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="MultiResultset">
<resultMap type="test.Test" id="test1">
<result column="col1" property="col1" jdbcType="INTEGER" javaType="Integer" />
<result column="col2" property="col2" jdbcType="INTEGER" javaType="Integer" />
</resultMap> <resultMap type="test.Test2" id="test2">
<result column="col1" property="col1" jdbcType="INTEGER" javaType="Integer" />
<result column="col3" property="col3" jdbcType="INTEGER" javaType="Integer" />
</resultMap> <select id="getTests" statementType="CALLABLE" parameterType="Map" resultMap="test1,test2" >
{call sp_multi_resultset(#{param1,mode=IN,jdbcType=INTEGER},#{param2,mode=IN,jdbcType=INTEGER},#{errorCode,mode=OUT,jdbcType=VARCHAR},#{errorInfo,mode=OUT,jdbcType=VARCHAR})}
</select>
</mapper>
3、java代码
/**
*
*/
package com.medsoft.top10.dao; import java.util.HashMap;
import java.util.List;
import java.util.Map; import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service; import com.cyl.kernel.util.JsonUtils; /**
* @author zhjh256@163.com
* {@link} http://www.cnblogs.com/zhjh256
*/
@Service
public class TestMultiResultSet implements InitializingBean {
@Autowired
private SqlSessionTemplate sqlSession;
/* (non-Javadoc)
* @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet()
*/
@Override
public void afterPropertiesSet() throws Exception {
Map<String,String> map = new HashMap<String,String>();
map.put("param1", "1");
map.put("param2", "1");
map.put("errorCode", "");
map.put("errorInfo", "");
List<List<?>> multiResult = sqlSession.selectList("MultiResultset.getTests",map);
System.out.println(JsonUtils.toJson(multiResult.get(0)));
System.out.println(JsonUtils.toJson(multiResult.get(1)));
}
}
输出：
[{"col1":1,"col2":2}]
[{"col1":1,"col3":2}]
昨天测试的时候，漏掉了property="colX"导致返回的是[null]，罪过啊。。。。