y
the servlet you wrote returns the QueryString (part after the question mark) of
the URL calling th servlet.
e.g.
if you call your servlet with www.domain.ext/servlet/GetData
it returns null
if you call it with www.domain.ext/servlet/GetData?Data
it returns Data
i hope i could help you
mike
Yang XIAO schrieb:
> Hi, there
>
> I wrote a servlet to talk to a URL, but I just got null from the URL.
> Appreciate it if anyone can tell me why?
>
> thanks!!
> Stella
> public class GetData extends HttpServlet {
> URLConnection connection;
>
> public void init() throws ServletException{
> try {
> URL url = new URL("http://yahoo.com");
> connection = url.openConnection();
> connection.setDoOutput(true);
> }catch(MalformedURLException me)
> {System.out.println("Could not find URL "+ me);}
> catch(IOException ie) {}
> }
>
> public void doGet (HttpServletRequest request,
> HttpServletResponse response)
> throws ServletException, IOException
> {
> // set content type and other response header fields first
> response.setContentType("text/html");
> PrintWriter out = response.getWriter();
>
> String pegReturn = request.getQueryString();
>
> // then write the response
> out.println("<html>" +
> "<head><title>Get Data Servlet</title></head>" +
> "<body bgcolor=\"#FFFFFF\">" +
> "<center>" +
> "<hr> <br> " +
> "<h1>" +
> "<font size=\"+3\" color=\"red\">Get Data </font>" +
> "<font size=\"+3\" color=\"purple\">Servlet</font>" +
> "</h1>" +
> "</center>");
>
> //Print out the information obtained
> out.println("<center>" +
> "<hr> <br> " +
> "<h2>pegreturn: " + pegReturn + "</h2>" +
> "</center>");
> out.println("</body></html>");
> out.close();
> }
> ...
> }
>
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