#region
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using System;
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using System.IO;
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using System.Text;
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using System.Windows.Forms;
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#endregion
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namespace CSFrameworkV5.Common
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{
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/// <summary>
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/// 系统异常日志，存放本地文件
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/// </summary>
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public class LogLocalException : ILogUserOperate
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{
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private static LogLocalException _Instance;
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private string _LogFile;
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private int ITEM_COUNT = 3; //每行字符的项目数
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private string SEPERATOR = " | "; //分隔符
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private int TIME_INDEX = 0; //时间部分所在每行的序号
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public LogLocalException(string file)
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{
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_LogFile = file;
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}
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public static LogLocalException Log
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{
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get
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{
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if (_Instance == null)
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{
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var logFile = Application.StartupPath +
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Globals.DEF_LOCAL_LOG;
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_Instance = new LogLocalException(logFile);
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}
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return _Instance;
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}
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}
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#region IOperateLog Members
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public void WriteLog(LogTypeSystem type, string content)
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{
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WriteLog(type.ToStringEx() + ":" + content);
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}
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public void WriteLog(LogTypeSystem type, string content,
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string formName, string formCaption, string menuName)
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{
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//打开窗体不写入本地日志
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}
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public void ClearLog(string user, DateTime beginDate, DateTime endDate)
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{
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ClearLog(beginDate, endDate);
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}
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public void WriteLog(string content)
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{
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try
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{
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if (string.IsNullOrEmpty(content)) return;
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content = content.Replace("\r", " "); //去掉回车符
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content = content.Replace("\n", " "); //去掉新行
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//
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//日志格式：时间 | 日志内容 | 当前用户
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// 举例：2013-08-02 18:34:56 | 未将对象引用实例. | admin
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//
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var time = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
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var line =
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time + SEPERATOR + content + SEPERATOR + "\r\n"; //断行符
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//写入文件
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File.AppendAllText(_LogFile, line, Encoding.UTF8);
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}
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catch
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{
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//不处理异常
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}
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}
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public void ClearLog(DateTime beginDate, DateTime endDate)
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{
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try
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{
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var lines = File.ReadAllLines(_LogFile, Encoding.UTF8);
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DateTime date;
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string[] items;
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var sb = new StringBuilder();
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foreach (var line in lines)
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{
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items = line.Split(new[] { SEPERATOR },
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StringSplitOptions.None);
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if (items.Length == ITEM_COUNT)
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{
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//匹配时间
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if (DateTime.TryParse(items[TIME_INDEX], out date))
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if (date < beginDate || date > endDate)
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sb.AppendLine(line); //不在范围内，保留日志
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}
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else
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{
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sb.AppendLine(line);
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}
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}
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//写入文件
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File.WriteAllText(_LogFile, sb.ToStringEx(), Encoding.UTF8);
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}
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catch
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{
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//不处理异常
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}
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}
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public void ClearAll()
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{
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try
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{
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File.WriteAllText(_LogFile, "", Encoding.UTF8);
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}
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catch
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{
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//不处理异常
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}
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}
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#endregion
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}
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}
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