how jsp opens a web page ?

[richardchaven]

I want to build a simple JSP to act as a proxt to retrieve web page
(xml documents, actually) for an AJAX page (which cannot request
documents outside its own domain).

Please point me at some examples or give me a class name to start
with.

Thanks

 

[=?ISO-8859-1?Q?Arne_Vajh=F8j?=]

I want to build a simple JSP to act as a proxt to retrieve web page
(xml documents, actually) for an AJAX page (which cannot request
documents outside its own domain).

Please point me at some examples or give me a class name to start
with.

Use a servlet instead of a JSP page.

Several JSP AJAX toolkits exist that comes with an
easy to extend servlet.

Arne

 

[Daniel Pitts]

I want to build a simple JSP to act as a proxt to retrieve web page
(xml documents, actually) for an AJAX page (which cannot request
documents outside its own domain).

Please point me at some examples or give me a class name to start
with.

Thanks

you would probably be better off getting a real proxy.

We use Resin for our webapps, and Apache as our webserver. Apache can
use ProxyPass to pass certain URLs to other sites.

Of course, there are plenty of other ways to do this .


Hope this helped,
Daniel.

 

[richardchaven]

Use a servlet instead of a JSP page.

I want to be able to deploy a minimum of files (ideally one) without
configuring anything. If I can use a jsp to get data from a different
page, that will be the simpliest.

I've seens a reference to a custom tag library that allows one to, for
instance, embed a quote from a different site in a JSP, so it seems
like this is theoretically possible.

Any ideas ?

 

[=?ISO-8859-1?Q?Arne_Vajh=F8j?=]

I want to be able to deploy a minimum of files (ideally one) without
configuring anything. If I can use a jsp to get data from a different
page, that will be the simpliest.

I've seens a reference to a custom tag library that allows one to, for
instance, embed a quote from a different site in a JSP, so it seems
like this is theoretically possible.

Any ideas ?

Try and take the body of servlet code below and copy
into a <% %> block in your JSP page.

But I warn you. You can easily get problems
with content type and blank lines when doing
what is servlet work in a JSP page.

Arne


================================================

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.net.*;

public class CopyServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
try {
URL url = new URL("http://www.foobar.dk/");
HttpURLConnection con = (HttpURLConnection)url.openConnection();
con.connect();
if(con.getResponseCode() == HttpURLConnection.HTTP_OK) {
InputStream is = con.getInputStream();
byte[] b = new byte[1000];
int n;
while((n = is.read(b)) >= 0) {
String s = new String(b,0,n);
response.getOutputStream().println(s);
}
is.close();
}
con.disconnect();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}