Hello,
I have an applet that sends a vector to a servlet and
gets a new vector from the servlet in return -- if
that's the type of thing you need take a look at the
code snipit below:
private Vector InitiateReport()
{
ObjectInputStream inputFromServlet = null;
Vector tempVector = null;
try
{
URL hostURL = hra_applet.urlCodeBase;
URL servletPOST = new URL("http://" +
hostURL.getHost() + ":" + hostURL.getPort() +
"/servlet/web_hra_servlet");
URLConnection con =
servletPOST.openConnection();
con.setDoInput(true);
con.setDoOutput(true);
con.setUseCaches(false);
con.setRequestProperty("Content-Type",
"application/octet-stream");
try
{
ObjectOutputStream outputToServlet = new
ObjectOutputStream(con.getOutputStream());
String request = new String("InitiateReport");
Vector vct = new Vector(4);
vct.addElement(request);
vct.addElement(Integer.toString(Index));
vct.addElement(new String(answerArray));
vct.addElement(UserInfo);
outputToServlet.writeObject(vct);
outputToServlet.flush();
outputToServlet.close();
}
catch(IOException e)
{
System.out.println("Error sending to servlet in
InitiateReport: " + e);
e.printStackTrace();
}
inputFromServlet = new
ObjectInputStream(con.getInputStream());
try
{
tempVector =
(Vector)inputFromServlet.readObject();
}
catch(IOException e) { System.out.println(e);
e.printStackTrace(); }
catch(ClassNotFoundException e) {
System.out.println(e); e.printStackTrace(); }
catch(Exception e) { System.out.println(e);
e.printStackTrace(); }
inputFromServlet.close();
return tempVector;
}
--- Rashid Mohiuddin <[EMAIL PROTECTED]> wrote:
> Thanks Jim,
> But I've already done this, and I am calling the
> servlet without any parameters. Actually, I just
> wanna transfer some data from the client to server.
> And it seems that applet is getting some problem in
> opening the outputstream with the servlet (i.e. from
> applet to servlet transfer), because I am successful
> in transfering the data from servlet to applet.
>
> any idea about this?
>
> Regards,
>
> Rashid.
> ----- Original Message -----
> From: Jim Richards
> To: [EMAIL PROTECTED]
> Sent: Monday, November 22, 1999 11:02 AM
> Subject: Re: Please Help: Applet-Servlet
> communication
>
>
> At 10:36 AM 22/11/99 +0800, you wrote:
>
> Hello Everybody,
> I am trying to pass some data from client
> side to server through applet-servlet communication.
> But I am unable to develop the connection between
> them. I've seen examples/books on this issue and
> everything seems to be fine.
> The interesting thing is that when I access the
> Servlet URL directly with the browser, I succeed in
> entering the doPost method. But when i open the same
> URL with the applet, I get the following result on
> the server side
>
> If you are calling the URL like
>
>
>
http://www.myhost.com/servlet/MyServlet?name=value&name2=value2
>
> then this is a doGet method of calling the servlet
> ... not a doPost. Easiest solution
> is for your servlet code to have
>
> public void doGet(HttpServletRequest
> request, HttpServletResponse response) throws
> ServletException, IOException {
> doPost(request, response);
> }
>
>
>
>
> 1- a NullPointerException on the
> "ServletFactory"
> 2- a Connection refused error on the "Weblogic"
>
> It seems that applet-call is not even entering
> the doPost() method of the Servlet.
>
> I'll highly appreciate if somebody could help me
> with that.
>
>
> Thanks in advance,
>
> Rashid.
>
>
>
>
> --
> Subvert the dominant paradigm
> http://www.cyber4.org/members/grumpy/index.html
>
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>
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>
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>
=====
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James Wilson
HealthFirst Corporation
[EMAIL PROTECTED]
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