Asp.net ajax server proxy

Capture the weather forecast on Netease and view the www.163.com homepage. The weather forecast is stored in xml format:
Http://www.163.com/inc/weatherxml/56294.xml
The last string of numbers is the province code.

Refer to Netease's code to change it to your own (in fact, it is copy). in ie6, it is normal, ie7 has no permission, firefox1.5 has no permission ......
The cross-origin problem is found online. The solution is "server proxy". The code is not found, and an asp:

1
2 <% @ LANGUAGE = "VBSCRIPT" CODEPAGE = "936" %>
3 <%
4 Function send_request (url)
5 Set Retrieval = CreateObject ("Microsoft. XMLHTTP ")
6 With Retrieval
7. Open "Get", url, False ,"",""
8. Send
9 send_request =. ResponseBody
10End
11Response. ContentType = "text/xml"
12 Set Retrieval = Nothing
13End Function
14
15url = Request ("url ")
16Response. BinaryWrite send_request (url)
17Response. Flush
18%>
19

Concise and terrible.

I did not use xmlhttp by referring to the previous code, so I wrote: 1 <% @ OutputCache Duration = "600" VaryByParam = "*" %>
2 <script language = "C #" runat = "server">
3 override protected void OnInit (EventArgs e)
4 {
5 string strUrl, strXml;
6 strUrl = Server. UrlDecode (Request. QueryString ["url"]);
7 strXml = this. GetUrlToHtml (strUrl );
8
9 Response. ContentType = "text/xml ";
10 Response. BinaryWrite (System. Text. Encoding. Default. GetBytes (strXml ));
11 Response. Flush ();
12
13}
14
15 public string GetUrlToHtml (string url)
16 {
17 if (url = "" | url = null) return "";
18
19 try
20 {
21 Uri uri = new Uri (url );
22 System. Net. WebRequest wReq = System. Net. WebRequest. CreateDefault (uri );
23 System. Net. WebResponse wResp = wReq. GetResponse ();
24 System. IO. Stream respStream = wResp. GetResponseStream ();
25 System. IO. StreamReader reader = new System. IO. StreamReader (respStream, System. Text. Encoding. GetEncoding ("gb2312 "));
26 string strHtml = reader. ReadToEnd ();
27 reader. Close ();
28 return strHtml;
29}
30 catch
31 {
32 return "";
33}
34}
35 </script>

I think it is complicated. And the Encoding is like a time bomb...

The test passed. It's too late to change.

This is what the half-pull project does. Modify the settings on another day.