using System;using System.IO;using System.Text;namespace Core{    public class LogHelper    {        private static void writeLog(string log)        {            string strFilePath = AppDomain.CurrentDomain.BaseDirectory + "logs\\log.txt";            string strDirPath = Path.GetDirectoryName(strFilePath);            if (!Directory.Exists(strDirPath))//Directory.Exists(dirPath)目录的路径                Directory.CreateDirectory(strDirPath);//Directory.CreateDirectory(path)创建目录            strFilePath = Path.Combine(strDirPath, "log" + string.Format("{0:yyyyMMdd}", DateTime.Now) + ".txt");//Path.Combine(strpath1,strpath2)            if (!File.Exists(strFilePath))//File.Exists(path)，指定路径的文件是否存在            {                //FileStream fsCreate = File.Create(strFilePath);//创建路径                FileStream fsCreate = new FileStream(strFilePath, FileMode.OpenOrCreate, FileAccess.ReadWrite);                fsCreate.Close();            }            FileStream fs = new FileStream(strFilePath, FileMode.Append,FileAccess.Write);//任何读取操作都会报异常            StreamWriter sw = new StreamWriter(fs, Encoding.Default);            sw.WriteLine("--------------------------------------------");            sw.WriteLine("Timestamp: "+DateTime.Now.ToString());            sw.WriteLine("Message: " + log);            sw.WriteLine("--------------------------------------------");            sw.Close();            fs.Close();        }        //打印普通信息        public static void WriteInfo(string objectName, string info)        {                        writeLog(objectName + ":" + info);                    }        public static void WriteInfo(string objectName, string info, int lines)        {            string strlines = "";            for (int i = 0; i < lines; i++)            {                strlines += "\r\n";            }            writeLog(objectName+":"+info);            //writeLog(strlines + DateTime.Now.ToString() + " INFO " + objectName + " " + info);        }        //打印错误信息        public static void WriteError(string objectName, string error)        {            writeLog(objectName+":"+error);            //writeLog(DateTime.Now.ToString() + " ERROR " + objectName + " " + error);        }        public static void WriteError(string objectName, string error, int lines)        {            string strlines = "";            for (int i = 0; i < lines; i++)            {                strlines += "\r\n";            }            writeLog(objectName + ":" + error);            //writeLog(strlines + DateTime.Now.ToString() + " ERROR " + objectName + " " + error);        }            }}