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项目配景:项目需要 首检及格率 这个效果,但是sql实验非常慢,就想着利用redis来优化接口的速度。如今我需要将数据库查询效果存储到redis,但是就是这一小步,也非常困难。我是用定时使命来实现上面的目的。
- @Component
- @Slf4j
- public class FirstInspectionPassRateTask {
- @Autowired
- private CheckResultMapper checkResultMapper;
- @Autowired
- private InspectionStationInfoMapper inspectionStationInfoMapper;
- @Autowired
- private RedisTemplate redisTemplate;
- @Scheduled(cron = "0 32 13 * * ?")
- public void calculateFirstInspectionPassRate(){
- log.info("####### 定时任务开启......");
- ValueOperations<String ,String> operations = redisTemplate.opsForValue();
- NumberFormat numberFormat = NumberFormat.getPercentInstance();
- numberFormat.setMinimumFractionDigits(2);
- List<String> unitIdList = inspectionStationInfoMapper.selectUnitId();//单位id 集合
- unitIdList = Optional.ofNullable(unitIdList).orElse(new ArrayList<>());
- //这里只给2024表中的统计数据,因为首检合格率需要跨表,目前我也想不出如何编写 TODO
- List<String> monthList = new ArrayList<>(Arrays.asList("03"));
- unitIdList.forEach(unitId -> {
- monthList.forEach(month -> {
- List<String> bgList = new ArrayList<>();
- //查询指定机构的 首检报告列表
- bgList = checkResultMapper.getFirstInspectionReportCount(unitId, "2024", month);
- bgList = Optional.ofNullable(bgList).orElse(new ArrayList<>());
- //计算指定机构的 首检报告数量
- Long bgSum = (long) bgList.size();
- //首检合格率
- String rate = "0.00%";
- if(bgSum != 0){
- //计算异常的首检报告数量
- Long warnBgSum = checkResultMapper.getWarnFirstInspectionReportCount(unitId,"2024",month,bgList);
- rate = numberFormat.format((bgSum-warnBgSum)/bgSum.doubleValue());
- }
- rate = rate.substring(0,rate.length() -1 );//去除最后的 % 方便前端处理
- String key = String.format("SZJDC:CHECKRESULT:BGBH:%s",unitId+"-2024-"+month);
- operations.set(key,rate,20, TimeUnit.DAYS);
- });
- });
- }
- }
复制代码 就在实验这个定时使命,我出现了非常多的报错:Query execution was interrupted
- Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@6eaf527b]
- 10:45:18.655 [pool-2-thread-1] ERROR o.s.s.s.TaskUtils$LoggingErrorHandler - Unexpected error occurred in scheduled task
- org.springframework.dao.QueryTimeoutException:
- ### Error querying database. Cause: java.sql.SQLTimeoutException: Query execution was interrupted
- ### The error may exist in file [D:\workspace\IdeaProjects\szjdc-service\sz-warning-platform\target\classes\mappers\CheckResultMapper.xml]
- ### The error may involve com.iflytek.warning.mapper.CheckResultMapper.getFirstInspectionReportCount
- ### The error occurred while handling results
- ### SQL: select BGBH from check_result_2024 cr WHERE year(CHECK_DATE) = ? and month(CHECK_DATE) = ? and UNIT_ID = ? and NOT EXISTS ( select CHECK_ID from check_result_2024 pcr WHERE pcr.CHECK_DATE between DATE_SUB(cr.CHECK_DATE, INTERVAL 4 MONTH) and DATE_SUB(cr.CHECK_DATE , INTERVAL 1 DAY) and cr.VIN = pcr.VIN and UNIT_ID = ? )
- ### Cause: java.sql.SQLTimeoutException: Query execution was interrupted
复制代码 这里给出我的解决办法:

这上面处理完了之后照旧出现了该报错,然后我请教前辈

就解决了,不愧是前辈
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