You could, theoreticly, use the net library, and write a very very simple web server in processing, and set the web form to submit data to your computer on a certain port that you have processing listening on.

all you'd need to do, is listen for a connection on a specified port, read all the data being sent, then send a very simple response, such as:
Code:

200 OK
Content-type: text/plain

Thankyou. 

Close the connection, then look through the data recieved, and you'll see how the form data is passed.


This is probably overkill, and assumes that you'll be able to setup your form to point at your computer, with no firewall problems or the like.

you can set the "submit" target fo a form to be anywhere, so you could say:

<form name="myform" method="GET" action="http://my-computer.ip.address:1234/">
.. normal form stuff ...
</form>

That will make the person's browser connect to your computer on port 1234 to submit the contents of the form.

So all you need to do is write your sketch with the net library to listen on port 1234, and anyone filling in the form should connect straight to your sketch, and submit the data.

it appears to be working, sort of.

Code:

import processing.net.*; 
int port = 9999;   
Server myServer;    
 
void setup() { 
  size(400, 400); 
  background(0); 
  myServer = new Server(this, port); // Starts a server on specified port 
} 
 
void draw() { } 
 
void serverEvent(Server someServer, Client someClient) { 
  println("We have a new client: " + someClient.ip()); 
  myServer.write("200 OK");
  myServer.write("Content-type: text/plain");
  myServer.write("Thankyou.");
}
 

The first problem is that the webpage does not receive the answer, or the answer isn't well formated or something, it just gives a timeout after a while, but I think I can work around that.

The other problem is more serious: I've looked into the NET docs and there is no READ command for the server, although there is a WRITE command for the client. I tried the examples in the docs, and the example for the client.write doesn't give any error but doesn't affect the server in any way either (wich is normal, the server doesn't have a read command in it).

So the question is, how do I retrieve information on the server from the web page ?

Thanks.

Why not just do this all in javascript? Just set it up the form to call a javascript which calls a method in the applet with the data as an argument.

i'd actually use a PHP file to catch the posted form, echo the results into a Param (http://processing.org/reference/param_.html) which processing can read easily..

HTML send file:
Code:

 // POST.HTML
 <form method="POST" action="catch.php">
 <input type="textfield" name="field" size="15">  
 <input type="submit" name="sub" value="Send">  
 </form> 
 

PHP catch file:
Code:

 // CATCH.PHP
 <applet code="applet" archive="applet.jar" width=100 height=100> 
 <param name="field" VALUE="<? echo $_POST['field']; ?>">   </applet> 
 

hope you get it working good luck

-seltar