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JSP proxy for JavaScript applications

/ Published in: Java
Save to your folder(s)
*save as proxy.jsp and put it in your servlet container
*consider using other methods to circumvent XSS: JSONP, dojox.io.xhrWindowNamePlugin, etc.

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Copy this code and paste it in your HTML 
  1. <%@page session="false"%>
  2. <%@page import="java.net.*,java.io.*" %>
  3. <%
  4. try {
  5. 	String reqUrl = request.getQueryString();
  6.  
  7. 	URL url = new URL(reqUrl);
  8. 	HttpURLConnection con = (HttpURLConnection)url.openConnection();
  9. 	con.setDoOutput(true);
  10. 	con.setRequestMethod(request.getMethod());
  11. 	int clength = request.getContentLength();
  12. 	if(clength > 0) {
  13. 		con.setDoInput(true);
  14. 		byte[] idata = new byte[clength];
  15. 		request.getInputStream().read(idata, 0, clength);
  16. 		con.getOutputStream().write(idata, 0, clength);
  17. 	}
  18. 	response.setContentType(con.getContentType());
  19.  
  20. 	BufferedReader rd = new BufferedReader(new InputStreamReader(con.getInputStream()));
  21. 	String line;
  22. 	while ((line = rd.readLine()) != null) {
  23. 		out.println(line); 
  24. 	}
  25. 	rd.close();
  26.  
  27. } catch(Exception e) {
  28. 	response.setStatus(500);
  29. }
  30. %>

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