记录log类

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

namespace CommHelper
{
    public class ErrorFileLog
    {
        /// <summary>
        /// 写日志信息
        /// </summary>
        /// <param name="asWriteInfo"></param>
        public static void WriteInfo(string asWriteInfo)
        {
            string sPath = AppConfig.GetString("LogPath") ;
            if (sPath == null || sPath == "")
            {
                sPath = "C:\\Log";
            }
            sPath = sPath.TrimEnd('\\');
            FileStream fs = null;
            try
            {
                if (!Directory.Exists(sPath))
                {
                    Directory.CreateDirectory(sPath);
                }
                string path = sPath + "\\" + DateTime.Now.ToString("yyyyMMdd") + ".info";
                if (!File.Exists(path))
                {
                    using (fs = File.Create(path)) { }
                }
                using (fs = File.Open(path, System.IO.FileMode.Append))
                {
                    Byte[] info =
                        new System.Text.UTF8Encoding(true).GetBytes(DateTime.Now.ToString() + " 记录:\r\n" + asWriteInfo + "\r\n");
                    fs.Write(info, 0, info.Length);
                }
            }
            finally
            {
                if (fs != null)
                {
                    fs.Close();
                }
            }
        }

        /// <summary>
        /// 写入异常信息
        /// </summary>
        /// <param name="exception"></param>
        /// <param name="error"></param>
        public static void WriteError(Exception exception, string error)
        {
            string sPath = AppConfig.GetString("LogPath");
            if (sPath == null || sPath == "")
            {
                sPath = "C:\\Log";
            }
            sPath = sPath.TrimEnd('\\');
   if (!Directory.Exists(sPath))
   {
    Directory.CreateDirectory(sPath);
   }
            error = string.Format("{0} {1} \r\n", DateTime.Now, GetExceptionFullError(exception, error));
            byte[] bytes = UTF8Encoding.UTF8.GetBytes(error);
            int length = bytes.Length;
            string logfile = Path.Combine(sPath ,DateTime.Now.ToString("yyyyMMdd") + ".log");
   FileStream w = null;
   if (!File.Exists(logfile))
   {
    using (w = File.Create(logfile)) { }
   }
            try
            {
                w = File.Open(logfile, FileMode.OpenOrCreate, FileAccess.Write, FileShare.ReadWrite);
                w.Position = w.Length;
                w.Write(bytes, 0, length);
            }
            finally
            {
                if (w != null)
                {
                    w.Close();
                }
            }
        }
        /// <summary>
        /// 格式化异常信息
        /// </summary>
        /// <param name="exception"></param>
        /// <param name="error"></param>
        /// <returns></returns>
        private static string GetExceptionFullError(Exception exception, string error)
        {
            if (error == null)
            {
                error = string.Empty;
            }
            if (exception != null)
            {
                if (error.Length > 0)
                {
                    error += " ";// Environment.NewLine;
                }
                error += GetExceptionFullError(exception);
            }
            return error;
        }
        /// <summary>
        /// 格式化异常信息
        /// </summary>
        /// <param name="exception"></param>
        /// <returns></returns>
  private static string GetExceptionFullError(Exception exception)
        {
            string builder = "";
            while (exception != null)
            {
                builder += exception.Message;
                builder += "  ";
                exception = exception.InnerException;
            }
            if (builder.Length > 0)
            {
                return builder.ToString();
            }
            else
            {
                return null;
            }
        }
    }
}