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博客园 - Gu

上位机开发人员真的需要物理 PLC 或博途吗?我们仅仅需要一个模拟 S7 通讯的工具 Web.INI vue前端项目,默认request 30秒超时,如何设置某个导出动作1分钟才超时 提示coreclr.dll 出错?栈溢出? .Net 6使用轻量级任务调度Coravel实践 Blazor 循环的迷思 Grafana 可视化图表 mysqldump 导出批量忽略某些表的bat脚本 cron表达式的讲解 若依 自定义注解@Log,实现aop java 处理日期时间有多个类,用哪个比较好 文件同步工具 西门子PLC Modus TCP通讯 thingsboard 接口 圆度和径向跳动,直线度的区别 安装thingsboard 3.7 dotNET_Reactor 混淆net程序时, 一些全局变量要加上volatile 修饰符, 不然优化到不会改变 Ant Design Blazor Table 组件的 自定义分页样式, 显示全部记录数,ShowTotal 安全可靠测评结果公告(2023年第1号) 2023-12-26 来源: 中国信息安全测评中心 Blazor 和Known 框架学习
检查采集程序心跳的程序挂了。看来得套娃,再来一个检测检测...
Gu · 2026-03-25 · via 博客园 - Gu

检查采集程序心跳的程序挂了。看来得套娃,再来一个检测检测程序的程序

Unhandled exception. MySql.Data.MySqlClient.MySqlException (0x80004005): Fatal error encountered during command execution.
---> MySql.Data.MySqlClient.MySqlException (0x80004005): Fatal error encountered attempting to read the resultset.
---> MySql.Data.MySqlClient.MySqlException (0x80004005): Reading from the stream has failed.
---> System.IO.IOException: Unable to read data from the transport connection: Connection timed out.
---> System.Net.Sockets.SocketException (110): Connection timed out
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 count)
--- End of inner exception stack trace ---
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at MySql.Data.MySqlClient.TimedStream.ReadAsync(Byte[] buffer, Int32 offset, Int32 count, Boolean execAsync)
at MySql.Data.MySqlClient.MySqlStream.ReadFullyAsync(Stream stream, Byte[] buffer, Int32 offset, Int32 count, Boolean execAsync)
at MySql.Data.MySqlClient.MySqlStream.LoadPacketAsync(Boolean execAsync)
at MySql.Data.MySqlClient.MySqlStream.LoadPacketAsync(Boolean execAsync)
at MySql.Data.MySqlClient.MySqlStream.ReadPacketAsync(Boolean execAsync)
at MySql.Data.MySqlClient.NativeDriver.GetResultAsync(Int32 affectedRow, Int64 insertedId, Boolean execAsync)
at MySql.Data.MySqlClient.Driver.GetResultAsync(Int32 statementId, Int32 affectedRows, Int64 insertedId, Boolean execAsync)
at MySql.Data.MySqlClient.Driver.NextResultAsync(Int32 statementId, Boolean force, Boolean execAsync)
at MySql.Data.MySqlClient.MySqlDataReader.NextResultAsync(Boolean execAsync, CancellationToken cancellationToken)
at MySql.Data.MySqlClient.MySqlDataReader.NextResultAsync(Boolean execAsync, CancellationToken cancellationToken)
at MySql.Data.MySqlClient.MySqlCommand.ExecuteReaderAsync(CommandBehavior behavior, Boolean execAsync, CancellationToken cancellationToken)
at MySql.Data.MySqlClient.MySqlCommand.ExecuteReaderAsync(CommandBehavior behavior, Boolean execAsync, CancellationToken cancellationToken)
at MySql.Data.MySqlClient.MySqlCommand.ExecuteReaderAsync(CommandBehavior behavior, Boolean execAsync, CancellationToken cancellationToken)
at MySql.Data.MySqlClient.MySqlCommand.ExecuteScalarAsync(Boolean execAsync, CancellationToken cancellationToken)
at MySql.Data.MySqlClient.MySqlCommand.ExecuteScalar()
at YCRMES.MySQLQuery.ExecuteScalar(String sql, Object param)
at CheckDAQ.Program.CheckDAQ()
at CheckDAQ.Program.Main(String[] args)
at CheckDAQ.Program.<Main>(String[] args)

posted on 2026-03-25 14:29  Gu  阅读(8)  评论()    收藏  举报