添加项目文件。
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using System;
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using System.Diagnostics;
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using System.IO;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Xml;
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using log4net;
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using log4net.Appender;
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using log4net.Config;
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namespace JY.Utility
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{
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/// <summary>
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/// LogHelper 用来记录系统的日志,包括异常等.
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/// </summary>
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public static class LogHelper
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{
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private static readonly ILog log;
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/// <summary>
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/// </summary>
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public static bool DebugMode = false;
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#region 构造函数
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/// <summary>
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/// 构造函数
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/// </summary>
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static LogHelper()
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{
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var repository = LogManager.CreateRepository("NETCoreRepository");
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var c = XmlConfigurator.Configure(repository, new FileInfo("Log4net.config"));
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log = LogManager.GetLogger(repository.Name, "Test");
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RunClearJob();
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}
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#endregion
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#region 清除过期日志
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/// <summary>
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/// 启动清除过期日志线程
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/// </summary>
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private static void RunClearJob()
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{
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Task.Run(() =>
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{
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try
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{
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while (true)
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{
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ClearOverdue();
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WriteLine("清除log4net过期日志");
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//24小时清一次
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Thread.Sleep(1000 * 60 * 60 * 24);
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}
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}
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catch (Exception e)
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{
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WriteException(e);
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}
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});
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}
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/// <summary>
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/// 定期清除过期日志
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/// </summary>
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private static void ClearOverdue()
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{
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var days = 7;
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if (File.Exists("Log4net.config"))
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{
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try
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{
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XmlDocument doc = new XmlDocument();
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doc.Load(@"Log4net.config");
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var node = doc.SelectSingleNode("/configuration/log4net");
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days = Convert.ToInt32(node.Attributes["OverdueDays"].Value);
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}
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catch
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{
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// ignored
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}
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}
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var apps = log.Logger.Repository.GetAppenders();
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if (apps.Length <= 0)
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{
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return;
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}
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var now = DateTime.UtcNow.AddDays(-days);
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foreach (var item in apps)
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{
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if (item is RollingFileAppender roll)
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{
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var dir = Path.GetDirectoryName(roll.File);
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var files = Directory.GetFiles(dir, "*.log.*");
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//var sample = "log.txt2017-10-23.txt";
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foreach (var filePath in files)
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{
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var file = new FileInfo(filePath);
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if (file.CreationTime < now || file.LastWriteTime < now)
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{
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try
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{
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file.Delete();
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}
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catch (Exception)
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{
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}
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}
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}
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}
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}
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}
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#endregion
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#region 公布的写日志函数
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/// <summary>
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/// 记录一条日志信息。注意：在记录时该程序会自动在左侧增加一格日期。
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/// </summary>
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/// <param name="strFormat">字符串的组成格式</param>
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/// <param name="args">参数</param>
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public static void WriteLine(string strFormat, params object[] args)
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{
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try
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{
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log.Info($"{string.Format(strFormat, args)}");
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}
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catch (Exception exp)
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{
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Trace.WriteLine("LOG ERROR: " + exp.Message);
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}
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}
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/// <summary>
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/// 记录一条日志信息。注意：在记录时该程序会自动在左侧增加一格日期。
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/// </summary>
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/// <param name="strLog">字符串的组成格式</param>
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public static void WriteLine(string strLog)
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{
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try
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{
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Debug.Assert(strLog != null);
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log.Info($"{strLog}");
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}
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catch (Exception exp)
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{
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Trace.WriteLine("LOG ERROR: " + exp.Message);
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}
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}
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/// <summary>
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/// 记录一条错误日志信息。注意：在记录时该程序会自动在左侧增加一格日期。
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/// </summary>
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/// <param name="strLog"></param>
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public static void WriteErrorLine(string strLog)
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{
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try
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{
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Debug.Assert(strLog != null);
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log.Error($"{strLog}");
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}
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catch (Exception exp)
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{
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Trace.WriteLine("LOG ERROR: " + exp.Message);
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}
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}
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/// <summary>
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/// 记录一条日志信息。注意：在记录时该程序会自动在左侧增加一格日期。
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/// </summary>
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/// <param name="strLog">字符串的组成格式</param>
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public static void WriteDebugLine(string strLog)
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{
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try
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{
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Debug.Assert(strLog != null);
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log.Debug($"{strLog}");
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}
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catch (Exception exp)
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{
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Trace.WriteLine("LOG ERROR: " + exp.Message);
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}
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}
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/// <summary>
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/// 记录异常（在调试模式）
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/// </summary>
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/// <param name="exp"></param>
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public static void WriteDebugException(Exception exp)
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{
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WriteDebugException(exp, null);
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}
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/// <summary>
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/// 记录异常（在调试模式）
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/// </summary>
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/// <param name="exp"></param>
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/// <param name="strFormat"></param>
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/// <param name="args"></param>
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public static void WriteDebugException(Exception exp, string strFormat, params object[] args)
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{
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try
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{
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Debug.Assert(exp != null);
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var sb = new StringBuilder();
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sb.AppendFormat("[{0}] DEBUG 找到 [{1}] 异常: {2}\r\n", DateTime.Now.ToString("HH:mm:ss"),
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exp.GetType().Name, exp.Message);
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// 附加信息
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if (strFormat != null) sb.AppendFormat(" Annex : {0}\r\n", string.Format(strFormat, args));
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// 调试信息
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sb.AppendFormat(" Source : {0}\r\n", exp.Source);
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sb.AppendFormat(" Time : {0}\r\n", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
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sb.AppendFormat(" OS/VER : {0} {1}\r\n", Environment.OSVersion.Platform,
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Environment.OSVersion.Version);
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sb.AppendFormat(" Thread : {0}\r\n", Thread.CurrentThread.Name);
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// 栈信息
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sb.AppendFormat(" Stack : {0}\r\n", exp.StackTrace);
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// 内部异常, 最多5级
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var inner = exp.InnerException;
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for (var i = 0; i < 5 && inner != null; i++)
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{
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// 显示内部异常
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sb.AppendFormat(" ----- InnerException ---------------------------\r\n");
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sb.AppendFormat(" ExceptionType: {0}\r\n", inner.GetType().Name);
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sb.AppendFormat(" Message: {0}\r\n", inner.Message);
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sb.AppendFormat(" Stack : {0}\r\n", inner.StackTrace);
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// 获取异常的内部异常
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inner = inner.InnerException;
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}
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log.Error(sb.ToString());
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}
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catch (Exception ex)
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{
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Trace.WriteLine("LOG ERROR: " + ex.Message);
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}
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}
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/// <summary>
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/// 记录下该异常
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/// </summary>
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/// <param name="exp">需要记录的异常对象</param>
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public static void WriteException(Exception exp)
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{
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WriteException(exp, null);
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}
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/// <summary>
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/// 记录下该异常
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/// </summary>
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/// <param name="exp">异常对象</param>
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/// <param name="strFormat">附加信息格式字符串,如果不需要,则该参数为 null</param>
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/// <param name="args">参数</param>
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public static void WriteException(Exception exp, string strFormat, params object[] args)
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{
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try
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{
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Debug.Assert(exp != null);
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var sb = new StringBuilder();
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{
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sb.AppendFormat("[{0}] 找到 [{1}] 异常: {2}\r\n", DateTime.Now.ToString("HH:mm:ss"), exp.GetType().Name,
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exp.Message);
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// 附加信息
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if (strFormat != null) sb.AppendFormat(" Annex : {0}\r\n", string.Format(strFormat, args));
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// 调试信息
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sb.AppendFormat(" Source : {0}\r\n", exp.Source);
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sb.AppendFormat(" Time : {0}\r\n", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
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sb.AppendFormat(" OS/VER : {0} {1}\r\n", Environment.OSVersion.Platform,
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Environment.OSVersion.Version);
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sb.AppendFormat(" Thread : {0}\r\n", Thread.CurrentThread.Name);
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// 栈信息
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sb.AppendFormat(" Stack : {0}\r\n", exp.StackTrace);
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// 内部异常, 最多5级
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var inner = exp.InnerException;
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for (var i = 0; i < 5 && inner != null; i++)
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{
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// 显示内部异常
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sb.AppendFormat(" ----- InnerException ---------------------------\r\n");
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sb.AppendFormat(" ExceptionType: {0}\r\n", inner.GetType().Name);
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sb.AppendFormat(" Message: {0}\r\n", inner.Message);
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sb.AppendFormat(" Stack : {0}\r\n", inner.StackTrace);
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// 获取异常的内部异常
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inner = inner.InnerException;
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}
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log.Error(sb.ToString());
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}
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}
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catch (Exception ex)
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{
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Trace.WriteLine("LOG ERROR: " + ex.Message);
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}
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}
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/// <summary>
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/// Dump 一个对象
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/// </summary>
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/// <param name="obj"></param>
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public static void WriteObject(object obj)
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{
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try
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{
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var sb = new StringBuilder();
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if (obj == null)
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{
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sb.AppendLine("-- The object is null\r\n");
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}
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else
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{
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sb.AppendFormat("[{0}] {1} has {2} property\r\n",
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DateTime.Now, obj.GetType().Name, obj.GetType().GetProperties().Length);
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var pis = obj.GetType().GetProperties();
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var iMaxLength = 0;
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foreach (var pi in pis)
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if (pi.CanRead && !pi.IsSpecialName)
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iMaxLength = Math.Max(pi.Name.Length, iMaxLength);
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foreach (var pi in pis)
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if (pi.CanRead && !pi.IsSpecialName)
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sb.AppendFormat(" {0} - {1}\r\n", pi.Name.PadRight(iMaxLength, ' '),
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pi.GetValue(obj, null));
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}
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}
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catch (Exception exp)
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{
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Trace.WriteLine("LOG ERROR: " + exp.Message);
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}
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}
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#endregion
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/// <summary>
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/// 错误日志带异常
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/// </summary>
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/// <param name="message"></param>
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/// <param name="ex"></param>
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public static void Error(string message,Exception ex)
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{
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ILog log = LogManager.GetLogger("Error");
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if (log.IsErrorEnabled)
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{
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log.Error(message,ex);
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}
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}
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// <summary>
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/// 错误日志不带异常
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/// </summary>
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/// <param name="message">错误日志</param>
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public static void Error(string message)
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{
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ILog log = LogManager.GetLogger("Error");
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if (log.IsErrorEnabled)
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{
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log.Error(message);
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}
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}
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}
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}
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