using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text;
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namespace Utility.Tools
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{
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public static class LogFile
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{
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/// <summary>写LOG到本地文件方法,message="存入信息",path="存储路径"</summary>
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public static void SaveLogToFile(string message, string path = "./log/defaultlog.txt")
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{
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FileInfo fi = null;
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StreamWriter logWriter = null;
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try
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{
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int fileLength = 1024 * 1024 * 5;//5MB
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fi = new FileInfo(path);
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if (!fi.Directory.Exists) { fi.Directory.Create(); }
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if (fi.Exists && fi.Length > fileLength)
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{
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string newpath = path.Insert(path.LastIndexOf('.'), "_" + DateTime.Now.ToString("HHmmss"));
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File.Move(path, newpath);
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}
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logWriter = new StreamWriter(path, true);
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logWriter.WriteLine(DateTime.Now.ToString() + ">>>" + message);
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logWriter.WriteLine("----->.");
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}
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catch (Exception ex)
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{
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//throw ex;
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}
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finally
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{
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fi = null;
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if (logWriter != null)
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{
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logWriter.Close();
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logWriter.Dispose();
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}
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}
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}
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//<summary>删除指定日期文件，保留7天</summary>
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public static void DeleteLogs(string Path, int days = 7)
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{
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//日志保留时长 单位：天
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if (days<7)
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{
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days = 7;
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}
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try
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{
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if (!Directory.Exists(Path))
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{
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return;
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}
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var now = DateTime.Now;
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foreach (var f in Directory.GetFileSystemEntries(Path).Where(f => File.Exists(f)))
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{
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var t = File.GetCreationTime(f);
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var elapsedTicks = now.Ticks - t.Ticks;
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var elaspsedSpan = new TimeSpan(elapsedTicks);
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if (elaspsedSpan.TotalDays > days)
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{
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File.Delete(f);
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}
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}
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}
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catch (Exception ex)
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{
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}
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}
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}
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}
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