You should read these troubleshooting tips if you receive a Java Servlet Output Binary Error Code.

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    I am trying to write a huge Java Servlet retrieved from binary result requests and respond to them by eliminating the use of HttpServletRequest.getOutputStream () and HttpServletResponse.getInputStream () . This affects project a, which sends the actual request from the Silverlight borrower, to which this servlet responds over an HTTP POST connection. To test this servlet, I first implement a Java client that I know better than Silverlight.

    The problem is that in my test project I am sending certain data from a servlet client because I have a byte array and I expect you to get a byte array of the same length - only that will never happen, and instead I am getting a new single byte. So I am definitely posting relevant pieces in the drawings that you can show me where I am wrong and hopefully provide relevant bibliography to help us further.

    The client servlet handles POST requests outside of a very simple HTML page with a pretty form that I am using in this frontend. I'm not too concerned about using JSP etc., but rather defining communication between servlets.

      // HttpServlet client calls this method away from doPost (request, response)private cancellation request, process (HttpServletRequest response HttpServletResponse)throws ServletException, IOException  String firstName = (String) request.getParameter ("name");  String lastName = (string) request. getparameter ("last name"); String xmlRequest = " 

    "; OutputStream-Writer = zero; InputStream-Reader = zero; try Weblink url = new url ("http: // localhost: 8080 / project / server"); URLConnection conn = url.openConnection (); conn.setDoInput (true); conn.setDoOutput (true); Writer means comp. getoutputstream (); byte [] baXml is xmlRequest.getBytes ("UTF-8"); write.write (baXml, 0, baXml.length); write.flush (); // Can I wait here? How? "Or" What? matches the player conn.getInputStream (); int = disk is available. accessible(); byte [] data = young byte [available]; reader.read (data, 0, available); String xmlResponse = String (data, "UTF-8"); Substitution PrintWriter print implies response.getWriter (); print.write (" Answer:


    ");    print.write (xmlResponse);    print.write ("

    "); Hurry. Close(); finally if (writer! = zero) Writer.close (); If (disk! = Null) Reader.close ();
    java servlet output binary file

    The server handles HTTP POST requests from the servlet. To do this, the above requests are handled by the servlet client for testing purposes, but in the future I intend to finally use it for clients in other languages ​​(especially Silverlight).

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  •   // Server-side HttpServlet creates this method from doPost (request, response)private rejection process (HttpServletRequest, HttpServetResponse response)throws ServletException, IOException ServletInputStream sis = null;  To think about    sis is the same as request.getInputStream ();    // I should probably use a large BufferedInputStream    // but straight from an InputStream?   Int available implies sis.available ();    a byte [] entry implies a new byte [available];   int readBytes = sis.read (input, 0, available);    if (readBytes! = available)      throw a new ServletException ("Oops! readBytes! = availableBytes");        // I ONLY RECEIVE 1 BYTE OF DATA !!!    // This is the actual client byte, message '<'.    The msg string matches "Read" + Read Bytes + "Bytes From"                 + available + "available + available upon request by InputStream." ;    System.err.println ("Server.process (HttpServletRequest, HttpServletResponse):" + message);    String xmlReply = " " + msg + " ";    byte personalX data [] = xmlReply.getBytes ("UTF-8");    ServletOutputStream sos = response.getOutputStream ();    sos.write (data, 0, data length);    sos.flush ();    SOS. Close();  finally    if (sis! = zero)      sis.close ();   

    So far I've been content with byte arrays instead of running BufferInputStream as I haven't yet determined if I'll base64 encode strings, for example, to convey information and facts. , or if I was using unmodified binary data.

    java servlet output binary file

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