mybatis+mysql使用存储过程生成流水号的实现代码

CREATE DEFINER=`root`@`localhost` PROCEDURE `GetSerialNo`(IN tsCode VARCHAR(50),OUT result VARCHAR(200) )
BEGIN 
 DECLARE tsValue VARCHAR(50); 
 DECLARE tdToday VARCHAR(20); 
 DECLARE nowdate VARCHAR(20); 
 DECLARE tsQZ VARCHAR(50); 
 DECLARE t_error INTEGER DEFAULT 0; 
 DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SET t_error=1; 
 START TRANSACTION; 
 /* UPDATE sys_sno SET sValue=sValue WHERE sCode=tsCode; */
 SELECT sValue INTO tsValue FROM sys_sno WHERE sCode=tsCode; 
 SELECT sQz INTO tsQZ FROM sys_sno WHERE sCode=tsCode ; 
 -- 因子表中没有记录，插入初始值 
 IF tsValue IS NULL THEN 
 SELECT CONCAT(DATE_FORMAT(NOW(),'%y%m'),'0001') INTO tsValue; 
 UPDATE sys_sno SET sValue=tsValue WHERE sCode=tsCode ; 
 SELECT CONCAT(tsQZ,tsValue) INTO result; 
 ELSE 
 SELECT SUBSTRING(tsValue,1,4) INTO tdToday; 
 SELECT CONVERT(DATE_FORMAT(NOW(),'%y%m'),SIGNED) INTO nowdate;
 -- 判断年月是否需要更新
 IF tdToday = nowdate THEN 
 SET tsValue=CONVERT(tsValue,SIGNED) + 1; 
 ELSE 
 SELECT CONCAT(DATE_FORMAT(NOW(),'%y%m') ,'0001') INTO tsValue ; 
 END IF; 
 UPDATE sys_sno SET sValue =tsValue WHERE sCode=tsCode; 
 SELECT CONCAT(tsQZ,tsValue) INTO result; 
 END IF; 
 IF t_error =1 THEN 
 ROLLBACK; 
 SET result = 'Error'; 
 ELSE 
 COMMIT; 
 END IF; 
 SELECT result ; 
END;
dao
Integer getFaultNo(Map<String, String> parameterMap);

<update id="getFaultNo" parameterMap="getFaultMap" statementType="CALLABLE">
 CALL GetSerialNo(?,?)
 </update>
 <!--
 parameterMap.put("tsCode", 0);
 parameterMap.put("result", -1);
 -->
 <parameterMap type="java.util.Map" id="getFaultMap">
 <parameter property="tsCode" mode="IN" jdbcType="VARCHAR"/>
 <parameter property="result" mode="OUT" jdbcType="VARCHAR"/>
 </parameterMap>

Map<String, String> parameterMap = new HashMap<String, String>();
 parameterMap.put("tsCode", "a");
 parameterMap.put("result", "-1");
 faultMapper.getFaultNo(parameterMap);
 // insert 故障日志 (主表)
 if (!parameterMap.get("result").equals("-1") && 
 !parameterMap.get("result").equals("Error")) {
 //成功
 } else {
 throw new RuntimeException();
 }