Can any SAP.LTD experts do a dynamic pdf download tutorial?

Question

Hi,SAP experts,
  I have tried to impletmente a dynmaic pdf download project ,say I have got pdf data like xstring type and try to download them at web dynpro side,but unluckly failed. Because the data I got are all dynmacly generated and could not easily used interactive form to display. So I tried to use xsting format and bin_file to transfer them to web dynpro side(Because some experts have implemented this successfully using this method),hoping that can work.But I did't get the good result. And I think this pdf download functionality without interactiveform  is quite importtant to many users.So I really hope anyone of SAP.LTD can produce an official turtorial about this topic!
   Thanks in advance!

Answer 1

I think he's just asking how to do that?  Not really Flex related so much as web-service, but since this is a Flex forum I'll steal code from the very Flex-related AlivePDF:
Sorry these crap forums trashed the formatting.  Now, I've never done what you're talking about via a web service (not a big fan) so this may not help at all, but hopefully - do you have access to an HttpServletResponse object to stream back your data?  If you do this should get you started I think.  If not you may need to do some web-service specific research.
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class CreatePDFServlet extends HttpServlet {
public void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
doGet(req, resp);
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
int i = 0;
int k = 0;
int maxLength = req.getContentLength();
byte[] bytes = new byte[maxLength];
String method = req.getParameter("method");
String name = req.getParameter("name");
ServletInputStream si = req.getInputStream();
while (true)
k = si.read(bytes,i,maxLength);
i += k;
if (k <= 0)
break;
if (bytes != null)
{ //Check out this part here
ServletOutputStream stream = resp.getOutputStream();
resp.setContentType("application/pdf");
resp.setContentLength(bytes.length);
resp.setHeader("Content-Disposition",method + ";filename=" + name);
stream.write(bytes);
stream.flush();
stream.close();
else
resp.setContentType("text");
resp.getWriter().write("bytes is null");