120 lines
3.8 KiB
C#
120 lines
3.8 KiB
C#
using System;
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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.Collections.Generic;
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using System.Runtime.InteropServices;
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namespace JY.Inspection
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{
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public class ServiceLog
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{
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public void Start()
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{
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Thread thread = new Thread(Init);
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thread.IsBackground = true;
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thread.Start();
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}
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private void Init()
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{
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while (true)
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{
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try
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{
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DeleteFile(System.Environment.CurrentDirectory + @"\Logs\", 30); //删除该目录下 超过 30天的文件
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}
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catch (Exception err)
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{
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Console.WriteLine(err.Message, err.StackTrace);
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}
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finally
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{
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Thread.Sleep(100000);
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}
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}
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}
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private void DeleteFile(string fileDirect, int saveDay)
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{
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try
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{
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DateTime nowTime = DateTime.Now;
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string[] files = Directory.GetFiles(fileDirect, "*.txt", SearchOption.AllDirectories); //获取该目录下所有 .txt文件
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foreach (string file in files)
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{
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FileInfo fileInfo = new FileInfo(file);
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TimeSpan t = DateTime.Now - fileInfo.CreationTime; //当前时间 减去 文件创建时间
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int day = t.Days;
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if (day > saveDay) //保存的时间，单位：天
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{
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if (IsOccupy(fileInfo.FullName)) //判断文件是否被占用
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{
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System.IO.File.Delete(fileInfo.FullName); //删除文件
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}
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else
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{
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Log4Helper.WriteLog("文件被占用，无法操作!","错误提示");
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}
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}
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}
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}
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catch (Exception err)
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{
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Log4Helper.WriteLog("文件被占用，无法操作!",err);
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}
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}
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[DllImport("kernel32.dll")]
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public static extern IntPtr _lopen(string lpPathName, int iReadWrite);
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[DllImport("kernel32.dll")]
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public static extern bool CloseHandle(IntPtr hObject);
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public const int OF_READWRITE = 2;
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public const int OF_SHARE_DENY_NONE = 0x40;
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public readonly IntPtr HFILE_ERROR = new IntPtr(-1);
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/// <summary>
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/// 判断文件是否被占用
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/// </summary>
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/// <param name="file"></param>
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/// <returns></returns>
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private bool IsOccupy(string file)
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{
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bool result = true; //默认状态此文件未被占用
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try
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{
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//string vFileName = @"c:\temp\temp.bmp";
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string vFileName = file;
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if (!System.IO.File.Exists(vFileName))
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{
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//Logger.Info("文件都不存在!");
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result = false;
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}
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IntPtr vHandle = _lopen(vFileName, OF_READWRITE | OF_SHARE_DENY_NONE);
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if (vHandle == HFILE_ERROR)
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{
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Log4Helper.WriteLog("文件被占用！", "错误提示");
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result = false;
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}
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CloseHandle(vHandle);
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Log4Helper.WriteLog("没有被占用！", "错误提示");
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}
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catch (Exception err)
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{
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result = false;
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Log4Helper.WriteLog("判断文件是否被占用", err);
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}
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return result;
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}
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}
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} |