c#寫日誌(.text)
阿新 • • 發佈:2019-01-24
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;
namespace BMCMInterface
{
public class LogFiles
{
private static string _fileName;
private static Dictionary<long, long> lockDic = new Dictionary<long, long>();
/// <summary>
/// 獲取或設定檔名稱
/// </summary>
public string FileName
{
get { return _fileName; }
set { _fileName = value; }
}
////<summary>
/// 建構函式
/// </summary>
/// <param name="byteCount">每次開闢位數大小,這個直接影響到記錄檔案的效率</param>
/// <param name="fileName">檔案全路徑名</param>
public LogFiles(string fileName)
{
_fileName = fileName;
}
/// <summary>
/// 建構函式
/// </summary>
public LogFiles()
{ }
/// <summary>
/// 建立檔案
/// </summary>
/// <param name="fileName"></param>
public void Create()
{
if (System.IO.File.Exists(_fileName))
{
FileInfo logfileinfo = new FileInfo(_fileName);
if (logfileinfo.Length > 10240000)
{
GenerateNewLogFileName();
}
}
}
/// <summary>
/// 寫入文字
/// </summary>
/// <param name="content">文字內容</param>
private void Write(string content, string newLine, string time)
{
if (string.IsNullOrEmpty(_fileName))
{
GenerateNewLogFileName();
}
Create();
using (System.IO.FileStream fs = new System.IO.FileStream(_fileName, System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.ReadWrite, System.IO.FileShare.ReadWrite, 8, System.IO.FileOptions.Asynchronous))
{
//Byte[] dataArray = System.Text.Encoding.ASCII.GetBytes(System.DateTime.Now.ToString() + content + "/r/n");
Byte[] dataArray = System.Text.Encoding.Default.GetBytes(time + " " + content + newLine);
bool flag = true;
long slen = dataArray.Length;
long len = 0;
while (flag)
{
try
{
if (len >= fs.Length)
{
fs.Lock(len, slen);
lockDic[len] = slen;
flag = false;
}
else
{
len = fs.Length;
}
}
catch (Exception ex)
{
while (!lockDic.ContainsKey(len))
{
len += lockDic[len];
}
}
}
fs.Seek(len, System.IO.SeekOrigin.Begin);
fs.Write(dataArray, 0, dataArray.Length);
fs.Close();
}
}
/// <summary>
/// 寫入檔案內容
/// </summary>
/// <param name="content"></param>
public void WriteLine(string content)
{
this.Write(content, System.Environment.NewLine, DateTime.Now.ToString());
}
/// <summary>
/// 寫入檔案
/// </summary>
/// <param name="content"></param>
public void Write(string content)
{
this.Write(content, "", "");
}
///<summary>
///構造log檔名
///</summary>
private void GenerateNewLogFileName()
{
//generate a new log file name
string strDateTimeString = string.Format("{0:yyyyMMddHHmm}", System.DateTime.Now);
string LogFile_Name = strDateTimeString + ".log";
_fileName = AppDomain.CurrentDomain.BaseDirectory + LogFile_Name;
}
}
}
//賦值:LogFile.FileName =AppDomain.CurrentDomain.BaseDirectory + "logText.log";
//呼叫:LogFile.WriteLine("獲取異常:" + ex.Message + sql);