网站改版时404错误

来源：互联网发布：dota1618牛蛙淘宝店编辑：程序博客网时间：2024/05/21 10:37

1、在IIS中先看一下 404错误的页面，然后再根目录下创建 404.aspx

<%@ Page Language="C#"%>
<%@ Import Namespace="System.IO" %>
<%@ Import Namespace="System.Text" %>
<%@ Import Namespace="System.Net" %>
<%@ Import Namespace="System.Web" %>
<script runat="server">
    public string strUrl{
        get{return Request.Url.ToString().ToLower();}
    }

    string strSoureUrl = "http://www.sosuo8.com/";   //目的站地址
    string strTemp = string.Empty;

    protected void Page_Load(object sender, EventArgs e){

         if (strUrl.Contains("/article/show.asp?id=")){
            int id = 0;
            //对整型必须尝试转换，防止SQL注入
            try
            {
                id = int.Parse(GetParam("id"));
            }
            catch
            {

            }
            if (id != 0){
                strTemp = GetSourceTextByUrl(strSoureUrl + "/article/show-"+id+".aspx");
                outputResult(strTemp);
            }
        }

    }

    //根据返回东西输出结果
    public void outputResult(string str){
       if (str == ""){
           strTemp = GetSourceTextByUrl(strSoureUrl + "/error.html");
           outputResult(strTemp);
          //Response.Write("有错误发生");
       }else{
            Response.Write(str);
            Response.End();
       }
    }

    public string GetSourceTextByUrl(string url)
    {
        WebRequest request = WebRequest.Create(url);
        request.Timeout = 200000;//20秒超时
        WebResponse response = request.GetResponse();
        Stream resStream = response.GetResponseStream();
        StreamReader sr = new StreamReader(resStream);
        string tempstr = sr.ReadToEnd();
        return tempstr;

    }

    //取得参数值
    //add by ahuinan 2009-12-18
    public string GetParam(string parameName)
    {

            //取得从问号后面开始的部分
            string[] strs = strUrl.Split('?');
            if (strs.Length >= 3)
            {
                string[] strParams = strs[2].ToString().Split('&');
                string[] strParamValues = new string[2];
                for (int i = 0; i < strParams.Length; i++)
                {
                    strParamValues = strParams[i].Split('=');
                    if (strParamValues[0] == parameName)
                    {
                        return strParamValues[1];
                    }
                }
            }
            return "";

    }
</script>