利用IHttpModule接口实现系统出错处理

利用IHttpModule记录系统出错页面及出错信息,并转到错误页面.

代码如下:

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

using System.IO;

namespace H3CPLAM
{
    public class SystemErrorHttpModule:IHttpModule
    {
        #region IHttpModule 成员

        public void Dispose()
        {
            throw new NotImplementedException();
        }

        public void Init(HttpApplication httpApplication)
        {
            httpApplication.Error+=new EventHandler(httpApplication_Error);

          //  httpApplication.BeginRequest+=new EventHandler(httpApplication_BeginRequest);

         }

     

    /*  private void httpApplication_BeginRequest(object sender, EventArgs e)
        {
            HttpApplication httpApplication = (HttpApplication)sender;
            HttpContext httpContext = httpApplication.Context;

            string strPath1 = HttpContext.Current.Request.FilePath;

            string strFileEx = VirtualPathUtility.GetExtension(strPath1);

            if(strFileEx.Equals(".aspx"))
            {
                HttpContext.Current.Response.Write ("<h1>HelloWorldHttpModule</h1>");
            }
        }

     */
        private void httpApplication_Error(object sender, EventArgs e)
        {
            HttpApplication httpApplication = (HttpApplication)sender;

            string strMessage=httpApplication.Context.Error.InnerException.Message+"  "+httpApplication.Request.Path;

            string strPath = @"D:\Message.txt";

            if (File.Exists(strPath))
            {
                httpApplication.Response.Redirect("~\Error.aspx");

                StreamWriter sw=File.CreateText(strPath);
                sw.WriteLine(strMessage);

                sw.Flush();
                sw.Close();
           
            }
            else
            {
                httpApplication.Response.Redirect("~\Error.aspx");

                StreamWriter sw = File.AppendText(strPath);
                sw.WriteLine(strMessage);

                sw.Flush();
                sw.Close();              
            }     
        }

        #endregion
    }
}

注:要在web.config中的<httpModules>节添加如下处理行:

<add name ="SystemErrorHttpModule" type ="H3CPLAM.SystemErrorHttpModule"/>