好用的XML Log类

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好用的XML Log类

2012年12月23日 ⁄ 综合 ⁄ 共 15308字 ⁄ 字号小中大 ⁄ 评论关闭

最近做个轻量级的项目,觉得Log4net配置太烦琐找了个Log类跟大家分享下

Code
using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.IO;

namespace Utility
{
    public static class LogWriter
    {
        #region Private Fields
        private static XmlDocument xmlDocument = new XmlDocument();
        private static string xmlFileName = "";
        #endregion

        #region Private Methods
        private static bool HasChild(string name, XmlNode node)
        {

XmlNodeList xmlnodelist = node.ChildNodes;

foreach (XmlNode enode in xmlnodelist)
{

if (enode.Name.ToLower() == name.ToLower())
{

return true;

}

return false;

}

private static string FormatInt(int num)
{

string formattedString = "";

if (num <= 9)
{

formattedString = "0" + num.ToString();

}

else
{

formattedString = num.ToString();

}
return formattedString;

}

private static string GetFileName()
{

string year = DateTime.Now.Year.ToString();

string month = FormatInt(DateTime.Now.Month);

string day = FormatInt(DateTime.Now.Day);

string path = "./Logs/";

string file = path + "Log_" + year + month + day + ".xml";
return file;

}
/**/

/// <summary>

/// create log file path

        /// </summary>

        private static void CreateLogFile()
        {

string xmlRootElementStr = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\r\n\r\n";

xmlRootElementStr += "<Log>\r\n\r\n";

xmlRootElementStr += " <Server>\r\n\r\n";

xmlRootElementStr += " <Infomations>\r\n\r\n";

xmlRootElementStr += " </Infomations>\r\n\r\n";

xmlRootElementStr += " </Server>\r\n\r\n";

xmlRootElementStr += " <System>\r\n";

xmlRootElementStr += " <Exceptions>\r\n";

xmlRootElementStr += " </Exceptions>\r\n";

xmlRootElementStr += " </System>\r\n\r\n";

xmlRootElementStr += " <Sql>\r\n";

xmlRootElementStr += " <Exceptions>\r\n";

xmlRootElementStr += " </Exceptions>\r\n";

xmlRootElementStr += " </Sql>\r\n\r\n";

xmlRootElementStr += "</Log>\r\n";

xmlFileName = GetFileName();

try
{

                //if file inexistence,create a new log file and load this file

                if (!System.IO.Directory.Exists("Logs"))
                {

                    Directory.CreateDirectory("Logs");
                    // File.Create(xmlFileName);
                    byte[] xmlRootElementByte = System.Text.Encoding.Default.GetBytes(xmlRootElementStr);

System.IO.FileStream fileStream = new FileStream(xmlFileName, FileMode.Create, FileAccess.ReadWrite);

fileStream.Write(xmlRootElementByte, 0, xmlRootElementByte.Length);

fileStream.Close();

xmlDocument.Load(xmlFileName);

}

else
{

if (!System.IO.File.Exists(xmlFileName))
{

// File.Create(xmlFileName);

byte[] xmlRootElementByte = System.Text.Encoding.Default.GetBytes(xmlRootElementStr);

System.IO.FileStream fileStream = new System.IO.FileStream(xmlFileName, FileMode.OpenOrCreate, FileAccess.ReadWrite);

fileStream.Write(xmlRootElementByte, 0, xmlRootElementByte.Length);

fileStream.Close();

xmlDocument.Load(xmlFileName);

}

else
{

xmlDocument.Load(xmlFileName);

}

catch (Exception ex)
{

throw ex;

}

#endregion #region Public Methods

/**/

/// <summary>

/// record a system exception to log

/// </summary>

        /// <param name="ex"></param>

        public static void AddSystemException(Exception ex)
        {

try
{

                //Get

                CreateLogFile();
                XmlNode xmlNode = xmlDocument.SelectSingleNode("//System//Exceptions");

if (!HasChild("exception", xmlNode))
{

                    XmlElement exceptionNode = xmlDocument.CreateElement("exception");
                    XmlElement timeNode = xmlDocument.CreateElement("Time");
                    XmlElement messageNode = xmlDocument.CreateElement("Message");
                    XmlElement sourceNode = xmlDocument.CreateElement("Source");
                    XmlElement stacktraceNode = xmlDocument.CreateElement("StackTrace");
                    DateTime dateTime = DateTime.Now;
                    string messageString = ex.Message;
                    string sourceString = ex.Source;
                    string stacktrace = ex.StackTrace;
                    timeNode.InnerText = dateTime.ToString();
                    messageNode.InnerText = messageString;
                    sourceNode.InnerText = sourceString;
                    stacktraceNode.InnerText = stacktrace;
                    exceptionNode.AppendChild(timeNode);
                    exceptionNode.AppendChild(messageNode);
                    exceptionNode.AppendChild(sourceNode);
                    exceptionNode.AppendChild(stacktraceNode);
                    xmlNode.AppendChild(exceptionNode);

}

else
{

}

catch (Exception e)
{

throw e;

}

        }
        // record a sql exception to log

        public static void AddSqlException(Exception ex)
        {

            //Get

            try
            {

CreateLogFile();
XmlNode xmlNode = xmlDocument.SelectSingleNode("//Sql//Exceptions");

                if (!HasChild("exception", xmlNode))
                {
                    XmlElement exceptionNode = xmlDocument.CreateElement("exception");
                    XmlElement timeNode = xmlDocument.CreateElement("Time");
                    XmlElement messageNode = xmlDocument.CreateElement("Message");
                    XmlElement sourceNode = xmlDocument.CreateElement("Source");
                    XmlElement stacktraceNode = xmlDocument.CreateElement("StackTrace");
                    DateTime dateTime = DateTime.Now;
                    string messageString = ex.Message;
                    string sourceString = ex.Source;
                    string stacktrace = ex.StackTrace;
                    timeNode.InnerText = dateTime.ToString();
                    messageNode.InnerText = messageString;
                    sourceNode.InnerText = sourceString;
                    stacktraceNode.InnerText = stacktrace;
                    exceptionNode.AppendChild(timeNode);
                    exceptionNode.AppendChild(messageNode);
                    exceptionNode.AppendChild(sourceNode);
                    exceptionNode.AppendChild(stacktraceNode);
                    xmlNode.AppendChild(exceptionNode);

}

else
{

} xmlDocument.Save(xmlFileName);

}

catch (Exception e)
{

throw e;

}

        // record a sql exception to log

        public static void AddSqlException(Exception ex, string sqltxt)
        {

try
{

                //Get

                CreateLogFile();
                XmlNode xmlNode = xmlDocument.SelectSingleNode("//Sql//Exceptions");

if (!HasChild("exception", xmlNode))
{

XmlElement exceptionNode = xmlDocument.CreateElement("exception");

XmlElement timeNode = xmlDocument.CreateElement("Time");
XmlElement messageNode = xmlDocument.CreateElement("Message");

XmlElement sourceNode = xmlDocument.CreateElement("Source");

XmlElement stacktraceNode = xmlDocument.CreateElement("StackTrace");

XmlElement sqltxtNode = xmlDocument.CreateElement("SQL_Text"); DateTime dateTime = DateTime.Now;

string messageString = ex.Message;

string sourceString = ex.Source;

string stacktrace = ex.StackTrace;

timeNode.InnerText = dateTime.ToString();

messageNode.InnerText = messageString;

sourceNode.InnerText = sourceString;

stacktraceNode.InnerText = stacktrace;

sqltxtNode.InnerText = sqltxt;
exceptionNode.AppendChild(timeNode);

exceptionNode.AppendChild(messageNode);

exceptionNode.AppendChild(sourceNode);

exceptionNode.AppendChild(stacktraceNode);

exceptionNode.AppendChild(sqltxtNode);
xmlNode.AppendChild(exceptionNode);

}

else
{

XmlElement sourceNode = xmlDocument.CreateElement("Source");

XmlElement stacktraceNode = xmlDocument.CreateElement("StackTrace");

XmlElement sqltxtNode = xmlDocument.CreateElement("SQL_Text");
DateTime dateTime = DateTime.Now;

string messageString = ex.Message;

string sourceString = ex.Source;

                    string stacktrace = ex.StackTrace;
                    timeNode.InnerText = dateTime.ToString();
                    messageNode.InnerText = messageString;

sourceNode.InnerText = sourceString;

stacktraceNode.InnerText = stacktrace;

sqltxtNode.InnerText = sqltxt;
exceptionNode.AppendChild(timeNode);

exceptionNode.AppendChild(messageNode);

exceptionNode.AppendChild(sourceNode);

exceptionNode.AppendChild(stacktraceNode);

exceptionNode.AppendChild(sqltxtNode);
xmlNode.AppendChild(exceptionNode);

} xmlDocument.Save(xmlFileName);

}

catch (Exception e)
{

throw e;

}

public static void AddServerInfo(String msg, String src)
{

try
{

                //Get

                CreateLogFile();
                XmlNode xmlNode = xmlDocument.SelectSingleNode("//Server//Infomations");

if (!HasChild("Info", xmlNode))
{

XmlElement infoNode = xmlDocument.CreateElement("Info");

XmlElement timeNode = xmlDocument.CreateElement("Time");

XmlElement messageNode = xmlDocument.CreateElement("Message");

XmlElement sourceNode = xmlDocument.CreateElement("Source");
DateTime dateTime = DateTime.Now;

string messageString = msg;

string sourceString = src; timeNode.InnerText = dateTime.ToString();

messageNode.InnerText = messageString;

sourceNode.InnerText = sourceString; infoNode.AppendChild(timeNode);

infoNode.AppendChild(messageNode);

infoNode.AppendChild(sourceNode);
xmlNode.AppendChild(infoNode);

}

else
{

XmlElement infoNode = xmlDocument.CreateElement("Info");

XmlElement timeNode = xmlDocument.CreateElement("Time");

XmlElement messageNode = xmlDocument.CreateElement("Message");

XmlElement sourceNode = xmlDocument.CreateElement("Source");
DateTime dateTime = DateTime.Now;

string messageString = msg;

string sourceString = src;
timeNode.InnerText = dateTime.ToString();

messageNode.InnerText = messageString;

sourceNode.InnerText = sourceString; infoNode.AppendChild(timeNode);

infoNode.AppendChild(messageNode);

infoNode.AppendChild(sourceNode);

xmlNode.AppendChild(infoNode);

} xmlDocument.Save(xmlFileName);
}

catch (Exception e)
{

throw e;

}

}
}

【上篇】正则表达式30分钟入门教程 v2.1版
【下篇】顺序栈的实现C语言

作者: pinewood

该日志由 pinewood 于11年前发表在综合分类下，最后更新于 2012年12月23日.
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