Servlet doPost never called from VB client

Question

Hi,
          Is there any way I can check that the weblogic server (servlet container?) is receiving the request before forwarding it to my servlet?
          Description:
          I'm using MSXML2.XMLHTTP ActiveX object to post an xml string to a servlet from an Excel add-in.
          This is working in all but one case.
          The problem I have is that one client's request is not being posted, i.e. the doPost(..) is not being called on the servlet.
          Here's the VBA:
          Dim Req As New MSXML2.XMLHTTP
          Req.Open bstrMethod:="POST", bstrUrl:=sUploadServlet, varAsync:=True, bstrUser:=uname, bstrPassword:=pword
          Req.Send sXML
          Observations:
          * The post works if I make the call synchronous (i.e. VB waits for the response)
          * The post works if I don't send the xml string
          * There are no errors raised in the VBA above
          The servlet container is Weblogic running on Solaris with java 1.3, the client VB runs in Excel 2000, IE is version 6 SP2.
          Thanks,
               Antony

Answer 1

Hi friends,
It seems I have finally found the answer to calling doPost() of HttpServlet from applet. Espcially for those who were working on jdk1.3 or previous would notice that after moving to a higher jsdk version, their code has suddenly stopped calling the doPost() method in servlet the answer to this is that remember to call the getResponseMessage() And disconnect() method on the HttpURLConnection after closing the outputStream on it.
This is a sample code to Send the object from applet to servlet in order to invoke doPost() method at the servlet.
//servletGetUser is a url in the form => http://host:port/contextroot/servletName.
     URL DBSrvlet = new URL(servletGetUser);
     HttpURLConnection SrvletConnection = (HttpURLConnection) DBSrvlet.openConnection();
     SrvletConnection.setDoOutput(true);
     SrvletConnection.setRequestMethod("POST");
     SrvletConnection.setUseCaches(false);      
     SrvletConnection.setDefaultUseCaches(false);
     SrvletConnection.setRequestProperty("Content-type","application/x-www-form-urlencoded");
     ObjectOutputStream outputToServlet = new ObjectOutputStream(SrvletConnection.getOutputStream());
     outputToServlet.writeObject(tAdmin);
outputToServlet.flush();     
     outputToServlet.close();
     // Remember your doPost() method gets fired actually by these last 2 lines.
SrvletConnection.getResponseMessage()
     SrvletConnection.disconnect();
Do let me know if this works,
Thanks,
Himanshu B.