初始化
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176
ErrorLog/ApplicationLog.vb
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176
ErrorLog/ApplicationLog.vb
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Imports System.Data.SqlClient
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Imports System.IO
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Imports System.Text
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Namespace AdminLog
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''' <summary>
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''' 应用程序日志
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''' </summary>
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Public NotInheritable Class ApplicationLog
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''' <summary>
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''' 日志类型
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''' </summary>
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Public Enum LogType
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''' <summary> 堆栈跟踪信息 </summary>
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Trace
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''' <summary> 警告信息 </summary>
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Warning
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''' <summary> 错误信息应该包含对象名、发生错误点所在的方法名称、具体错误信息 </summary>
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[Error]
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''' <summary> 与数据库相关的信息 </summary>
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Database
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End Enum
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''' <summary>
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''' 日志文件所在父文件夹路径
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''' </summary>
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Private Shared _logPath As String = My.Application.Info.DirectoryPath
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''' <summary>
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''' 日志文件名前缀
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''' </summary>
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Private Shared _logFilePrefix As String = "Log"
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''' <summary>
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''' 日志文件所在路径
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''' </summary>
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Private Shared _logFilePath As String = $"{LogDirPath}{Path.DirectorySeparatorChar}{LogFilePrefix}_{Date.Now:yyyyMMdd}.Log"
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''' <summary>
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''' 保存日志的文件夹完整路径
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''' </summary>
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Public Shared Property LogDirPath As String
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Get
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If Equals(_logPath, String.Empty) Then
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_logPath = My.Application.Info.DirectoryPath
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End If
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Return _logPath
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End Get
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Set(ByVal value As String)
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_logPath = value
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_logFilePath = $"{LogDirPath}{Path.DirectorySeparatorChar}{LogFilePrefix}_{Date.Now:yyyyMMdd}.Log"
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End Set
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End Property
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''' <summary>
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''' 日志文件前缀
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''' </summary>
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Public Shared Property LogFilePrefix As String
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Get
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Return _logFilePrefix
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End Get
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Set(value As String)
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_logFilePrefix = value
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_logFilePath = $"{LogDirPath}{Path.DirectorySeparatorChar}{LogFilePrefix}_{Date.Now:yyyyMMdd}.Log"
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End Set
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End Property
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''' <summary>
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''' 日志文件路径
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''' </summary>
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''' <returns></returns>
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Public Shared ReadOnly Property LogFilePath() As String
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Get
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Return _logFilePath
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End Get
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End Property
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''' <summary>
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''' 写入错误信息记录日志
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''' </summary>
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''' <param name="ex"></param>
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Public Shared Sub WriteErrorLog(ex As Exception)
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Dim msg As New StringBuilder
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msg.Append($"ErrorMessage:{ex.Message}{vbNewLine}")
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msg.Append($"ErrorTime:{Now}{vbNewLine}")
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msg.Append($"ErrorSource:{ex.Source}{vbNewLine}")
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msg.Append($"ErrorType:{ex.GetType}{vbNewLine}")
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msg.Append($"ErrorTargetSite:{ex.TargetSite}{vbNewLine}")
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msg.Append($"ErrorStackTrace:{ex.StackTrace}{vbNewLine}")
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WriteLog(LogType.Error, msg.ToString())
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End Sub
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''' <summary>
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''' 写入错误信息记录日志
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''' </summary>
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''' <param name="msg"></param>
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Public Shared Sub WriteErrorLog(msg As String)
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WriteLog(LogType.Error, msg.ToString())
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End Sub
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''' <summary>
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''' 写入流程信息记录日志
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''' </summary>
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''' <param name="msg"></param>
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Public Shared Sub WriteTraceLog(msg As String)
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WriteLog(LogType.Trace, msg.ToString())
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End Sub
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''' <summary>
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''' 写入警告信息记录日志
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''' </summary>
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''' <param name="msg"></param>
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Public Shared Sub WriteWarningLog(msg As String)
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WriteLog(LogType.Warning, msg.ToString())
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End Sub
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''' <summary>
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''' 写入数据库信息记录日志
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''' </summary>
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''' <param name="msg"></param>
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Public Shared Sub WriteDatabaseLog(msg As String)
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WriteLog(LogType.Database, msg.ToString())
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End Sub
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''' <summary>
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''' 日志锁,防止多线程同时写日志导致冲突
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''' </summary>
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Private Shared ReadOnly LogLock As New Object()
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''' <summary>
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''' 将信息入到日志
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''' </summary>
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''' <param name="logType">日志类型</param>
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''' <param name="msg">日志内容</param>
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Public Shared Sub WriteLog(logType As String, msg As String)
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'写入记录入日志文件
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SyncLock LogLock
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Try
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Dim logString As New StringBuilder
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logString.Append($"[{Date.Now.ToString("yyyy-MM-dd HH:mm:ss:fff ")}]")
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logString.Append($"[{logType.PadRight(8)}]")
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logString.Append(msg)
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Using sw As StreamWriter = File.AppendText($"{LogDirPath}{Path.DirectorySeparatorChar}{LogFilePrefix}_{Date.Now:yyyyMMdd}.Log")
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sw.WriteLine(logString.ToString())
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End Using
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Catch ex As Exception
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Console.WriteLine($"Uts WriteLog Error:{ex.Message}")
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End Try
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End SyncLock
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End Sub
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''' <summary>
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''' 写入日志到本地
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''' </summary>
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Public Shared Sub WriteLog(type As LogType, ByVal msg As String)
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WriteLog(type.ToString(), msg)
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End Sub
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End Class
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End Namespace
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