C# 日志记录工具类：（适用于不想使用log4j等第三方的Log工具的时候，希望自己写个简单类实现）
LogHelper.cs内容如下：
using System;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Threading;
using System.Collections.Generic; namespace Tools.Log
{
/// <summary>
/// 多线程安全Log记录工具20180314
/// </summary>
public class LogHelper
{
//为了使用DBGView进行在线调试：
//System.Diagnostics.Debug.WriteLine("Debug模式可见")
//System.Diagnostics.Trace.WriteLine("Debug、Release都可见"); private static Thread WriteThread;
private static readonly Queue<string> MsgQueue; private static readonly string FilePath; private static Boolean autoResetEventFlag = false;
private static AutoResetEvent aEvent = new AutoResetEvent(false);
private static bool flag = true;
public static bool LogFlag = true; static LogHelper()
{
FilePath = AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "App_Log\\";
WriteThread = new Thread(WriteMsg);
MsgQueue = new Queue<string>();
WriteThread.Start();
} public static void LogInfo(string msg)
{
Monitor.Enter(MsgQueue);
MsgQueue.Enqueue(string.Format("{0} {1} {2}", DateTime.Now.ToString("yyyy-MM-dd HH:mm:sss"), "Info", msg));
Monitor.Exit(MsgQueue);
if (autoResetEventFlag) {
aEvent.Set();
}
}
public static void LogError(string msg)
{
Monitor.Enter(MsgQueue);
MsgQueue.Enqueue(string.Format("{0} {1} {2}", DateTime.Now.ToString("yyyy-MM-dd HH:mm:sss"), "Error", msg));
Monitor.Exit(MsgQueue);
if (autoResetEventFlag)
{
aEvent.Set();
}
}
public static void LogWarn(string msg)
{
Monitor.Enter(MsgQueue);
MsgQueue.Enqueue(string.Format("{0} {1} {2}", DateTime.Now.ToString("yyyy-MM-dd HH:mm:sss"), "Warn", msg));
Monitor.Exit(MsgQueue);
if (autoResetEventFlag)
{
aEvent.Set();
}
} /// <summary>
/// ExitThread是退出日志记录线程的方法，一旦退出，无法开启，一般在程序关闭时执行
/// </summary>
public static void ExitThread() {
flag = false;
aEvent.Set();//恢复线程执行
}
private static void WriteMsg()
{
while (flag)
{
//进行记录
if (LogFlag)
{
autoResetEventFlag = false;
if (!Directory.Exists(FilePath))
{
Directory.CreateDirectory(FilePath);
}
string fileName = FilePath + DateTime.Now.ToString("yyyy-MM-dd") + "-Dic.log";
var logStreamWriter = new StreamWriter(fileName, true);
while (MsgQueue.Count > )
{
Monitor.Enter(MsgQueue);
string msg = MsgQueue.Dequeue();
Monitor.Exit(MsgQueue);
logStreamWriter.WriteLine(msg);
if (GetFileSize(fileName) > * )
{
logStreamWriter.Flush();
logStreamWriter.Close();
CopyToBak(fileName);
logStreamWriter = new StreamWriter(fileName, false);
logStreamWriter.Write("");
logStreamWriter.Flush();
logStreamWriter.Close();
logStreamWriter = new StreamWriter(fileName, true);
}
//下面用于DbgView.exe工具进行在线调试
System.Diagnostics.Debug.WriteLine("BS_Debug:"+msg);
System.Diagnostics.Trace.WriteLine("BS_Release:" + msg);
}
logStreamWriter.Flush();
logStreamWriter.Close();
autoResetEventFlag = true;
aEvent.WaitOne();
}
else {
autoResetEventFlag = true;
aEvent.WaitOne();
}
}
}
private static long GetFileSize(string fileName)
{
long strRe = ;
if (File.Exists(fileName))
{
var myFs=new FileInfo(fileName);
strRe = myFs.Length / ;
//Console.WriteLine(strRe);
}
return strRe;
}
private static void CopyToBak(string sFileName)
{
int fileCount = ;
string sBakName = "";
do
{
fileCount++;
sBakName = sFileName + "." + fileCount + ".BAK";
}
while (File.Exists(sBakName));
File.Copy(sFileName, sBakName);
}
}
}
该类由BS风华改编自网上一个类。实现了多线程下面安全记录日志的功能：
使用方法：
Tools.Log.LogHelper.LogFlag = true; //开启记录
Tools.Log.LogHelper.LogInfo("==========日志记录内容 Info====");
Tools.Log.LogHelper.LogWarn("==========日志记录内容 Warn====");
Tools.Log.LogHelper.LogError("==========日志记录内容 Error====");
Tools.Log.LogHelper.LogFlag = false;//停止记录 Tools.Log.LogHelper.ExitThread();// 退出日志记录线程，一般在程序退出时候调用。
如果有更好的方式，欢迎留言