From b726dc97538b7d4ba71fd06c14161017dd67c2b7 Mon Sep 17 00:00:00 2001
From: xubinbin <1323875150@qq.com>
Date: 星期三, 10 五月 2023 15:38:22 +0800
Subject: [PATCH] "@schedule"是Spring框架提供的一种定时任务执行机制，默认情况下它是单线程执行，项目中多次使用fixedRate按指定频率执行任务(不管前面任务是否已经完成)，在同时执行多个定时任务时可能会出现阻塞和性能问题，为了解决这种单线程瓶颈问题，将定时任务的执行机制改为支持多线程
---
src/main/java/com/genersoft/iot/vmp/storager/dao/DeviceAlarmMapper.java | 9 +++++----
1 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/src/main/java/com/genersoft/iot/vmp/storager/dao/DeviceAlarmMapper.java b/src/main/java/com/genersoft/iot/vmp/storager/dao/DeviceAlarmMapper.java
index f67e152..f927d51 100644
--- a/src/main/java/com/genersoft/iot/vmp/storager/dao/DeviceAlarmMapper.java
+++ b/src/main/java/com/genersoft/iot/vmp/storager/dao/DeviceAlarmMapper.java
@@ -1,9 +1,10 @@
package com.genersoft.iot.vmp.storager.dao;
import com.genersoft.iot.vmp.gb28181.bean.DeviceAlarm;
-import com.genersoft.iot.vmp.gb28181.bean.DeviceChannel;
-import com.genersoft.iot.vmp.vmanager.gb28181.platform.bean.ChannelReduce;
-import org.apache.ibatis.annotations.*;
+import org.apache.ibatis.annotations.Delete;
+import org.apache.ibatis.annotations.Insert;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;
import java.util.List;
@@ -20,7 +21,7 @@
int add(DeviceAlarm alarm);
- @Select(value = {" <script>" +
+ @Select( value = {" <script>" +
" SELECT * FROM device_alarm " +
" WHERE 1=1 " +
" <if test=\"deviceId != null\" > AND deviceId = #{deviceId}</if>" +
--
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