编写操作日志类的方法

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;

namespace Discuz.WebService
{
public class LogWrite
{
private string filePath = null;
public LogWrite()
{
try
{
string Dir = HttpContext.Current.Server.MapPath("~/Log/");
if (!Directory.Exists(Dir))
{
Directory.CreateDirectory(Dir);
}
filePath = Dir + DateTime.Now.ToString("yyyy-MM-dd") + ".log";
}
catch (Exception) { }
}
/// <summary>
/// 写入错误信息
/// </summary>
/// <param name="ex"></param>
public void WriteLog(Exception ex, string IP)
{
using (StreamWriter sw = new StreamWriter(filePath, true, System.Text.Encoding.UTF8))
{
sw.WriteLine(string.Format("时间:{0} 错误原因:{1}", DateTime.Now.ToString(), ex.Message));
sw.WriteLine(string.Format("用户IP:{0}", IP));
sw.WriteLine("错误信息:");
sw.WriteLine(ex.StackTrace);
sw.WriteLine("-----------------------------------------------------------------------------------------------");
sw.WriteLine("");
sw.Flush();
sw.Close();
}
}
/// <summary>
/// 写入错误信息
/// </summary>
/// <param name="ex"></param>
public void WriteLog(string msg, string IP)
{
using (StreamWriter sw = new StreamWriter(filePath, true, System.Text.Encoding.UTF8))
{
sw.WriteLine(string.Format("时间:{0} 错误原因:{1}", DateTime.Now.ToString(), msg));
sw.WriteLine(string.Format("用户IP:{0}", IP));
sw.WriteLine("-----------------------------------------------------------------------------------------------");
sw.WriteLine("");
sw.Flush();
sw.Close();
}
}
}
}