HttpURLConnection - Posting XML to a servlet

[John Fairbairn]

Hi,
Ok... this is really frustrating me so I hope you can help.I'm trying to post XML to a servlet from a java client. The XML is never received by the servlet.I've posted the client and servlet code below. Any help is appreciated.
Thanks.
Java Client

 private void postMessage(TextMessage msg, String address, String subAddress)
                    throws Exception
    {
      System.out.println("RouterMDB/postMessage to address: " + address);
      try
      {
        // URL url = new URL("http://localhost:8080/xml_test/post");
        URL url = new URL(address);
        URLConnection uc = url.openConnection();
        HttpURLConnection conn = (HttpURLConnection) uc;
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("SOAPAction", SOAP_ACTION);
        OutputStream out = conn.getOutputStream();
        OutputStreamWriter wout = new OutputStreamWriter(out, "UTF-8");
        System.out.println("Writing message: " + msg.getText() + " to outputstream.");
        wout.write(msg.getText() );
        wout.flush();
        out.close();        
   
      }
      catch (Exception e)
      {
        e.printStackTrace();
      }
    }  

Servlet

 public void init() throws ServletException {
    System.out.println("OK we're in init method...");
  
    config = ConfigurationInfo.getInstance(); 
    this.globalMap = (HashMap) config.getConfigByBeanId(GLOBAL);
    this.queueName = (String) globalMap.get(QUEUE_NAME);
    this.cFactory = (String) globalMap.get(QUEUE_CONNECTION_FACTORY);
    logger = new Logger();        
  }
  public void doPost(HttpServletRequest req,
                    HttpServletResponse res)
      throws ServletException, IOException {
      try {
            System.out.println("OK we're in doPost method...");
            BufferedReader b = new BufferedReader(new InputStreamReader(req.getInputStream()));
            StringBuffer workBuffer = new StringBuffer();            
            while((workString = b.readLine()) != null) {
                   workBuffer.append(workString);
            }
            workString = workBuffer.toString();
            System.out.println("TransportHTTPServlet - Got XML: " + workString);
            if (workBuffer.length() > 0) {
              JMSHelper jms = new JMSHelper();
              // setup message delivery options
              jms.setQueueName(queueName.trim());
              jms.setConnectionFactoryName(cFactory);
              System.out.println("TransportHTTPServlet - Sending XML to queue: " + queueName.trim());
              jms.sendMessage(workString);
            }    
            else {
                 String sError = "No XML document was received - unable to process HTTP request";
                 throw new BusinessException(sError);    
            }
      } 

[John Fairbairn]

Oh yeah, I'm not getting any exceptions thrown in the java client either - so I'm not sure what the problem is.

[Maulin Vasavada]

hi
just try to post a simple String to the same servlet from the same java client program and see if it is working. if it doesn't then look at here
this helped the other person to solve the problem. i'm not sure if this can solve yours....
thanks
maulin

[John Fairbairn]

Thanks Maulin.
It worked. The thread you sent me helped.
I've posted my client and servlet code below.
Client

 
////////////////////////////////////////////////////////////////////////
    // Post message to URL
    ////////////////////////////////////////////////////////////////////////
    private void postMessage(TextMessage msg, String address, String subAddress)
                    throws Exception
    {
      System.out.println("RouterMDB/postMessage to address: " + address);
      try
      {
        URL url = new URL(address);
        URLConnection uc = url.openConnection();
        HttpURLConnection conn = (HttpURLConnection) uc;
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-type", "text/xml");        
        PrintWriter pw = new PrintWriter(conn.getOutputStream());
        pw.write(msg.getText());
        pw.close();
        BufferedInputStream bis = new BufferedInputStream(conn.getInputStream());
        bis.close();
   
      }
      catch (Exception e)
      {
        e.printStackTrace();
      }
    } 

Servlet

 public void doPost(HttpServletRequest req,
                    HttpServletResponse res)
      throws ServletException, IOException {
      try {
            System.out.println("OK we're in doPost method...");
            System.out.println("Request content type: " + req.getContentType() + " content length: " + req.getContentLength());
            BufferedReader b = new BufferedReader(req.getReader());
           
            StringBuffer workBuffer = new StringBuffer();            
            while((workString = b.readLine()) != null) {
                   workBuffer.append(workString);
            }
            workString = workBuffer.toString();
            System.out.println("TransportHTTPServlet - Got XML: " + workString);
            if (workBuffer.length() > 0) {
              JMSHelper jms = new JMSHelper();
              // setup message delivery options
              jms.setQueueName(queueName.trim());
              jms.setConnectionFactoryName(cFactory);
              System.out.println("TransportHTTPServlet - Sending XML to queue: " + queueName.trim());
              jms.sendMessage(workString);
            }    
            else {
                 String sError = "No XML document was received - unable to process HTTP request";
                 throw new BusinessException(sError);    
            }
      }
      catch (BusinessException e) {
            
            logger.log(LogLevel.ERROR, this.getClass().getName(), workString, e.toString(), queueName);
      }
      catch (Exception e) {
            e.printStackTrace();
            logger.log(LogLevel.EXCEPTION, this.getClass().getName(), workString, e.toString(), queueName);
      }
  }  
  

Cheers!
John