Perl with Java applet

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

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Re: Perl with Java applet by dorward (Curate) on Jun 06, 2005 at 12:22 UTC
There are a couple of ways to get information to a Java Applet. The simplest is through the HTML <param> element. Failing that you will most likely be looking at opening a new network connection from the Applet to the server. One approach could be through the use of a Perl SOAP server and a Java SOAP client.	[reply]
Re: Perl with Java applet by Ben Win Lue (Friar) on Jun 06, 2005 at 12:26 UTC
Depends on your applet... Normally applets receive their parameters in the HTML-Code, that is calling them. The way the data is passed (e.g. Parameter names) should be specified in your applet.	[reply]
Re^2: Perl with Java applet by Anonymous Monk on Jun 06, 2005 at 12:43 UTC
Could the applet passed the data back to Perl? I mean the data might be modified, so could the modified data pass back to perl and updated MySQL	[reply]
Re^3: Perl with Java applet by dorward (Curate) on Jun 06, 2005 at 13:33 UTC
Passing data with param is strictly one way. To send data from the applet back to the server you'll need to start making HTTP requests from the applet (possibly via SOAP as I mentioned before), or running some other server software running whatever protocol you want.	[reply]
Re: Perl with Java applet by Zero_Flop (Pilgrim) on Jun 06, 2005 at 20:58 UTC
Basicly there are two main ways. One is to pass the info in the HTML Parm as mentioned, the other way is to have the Applet pull a specific web page ( call a perl script, static file, or HTML ) that returns the informaiton you want. You can also encode the informaiton in the perl and decode it in the applet so it is not directly readable by someone monitoring the connection or going directly to the webpage. I do the second option for a little game I programmed. The Java applet that displayes the users status calls a perl CGI script on the server which returns the status then the applet POSTs the responce to a perl script which writes back to the db on the sever. Java can always write and read from the server it originates from, but it can only read and write locally if it is signed and the user accepts it. IF you are interested let me know and I can send you a link to an example. I don't want to post links to WIP which will live in PM archives.	[reply]
Re^2: Perl with Java applet by ejal (Initiate) on Jun 07, 2005 at 01:01 UTC
Yes Zero Flop, I am very intrested to see the example. Maybe you could send the link to my email ejaluum@yahoo.com . Thanks	[reply]
Re: Perl with Java applet by gregor42 (Parson) on Jun 07, 2005 at 15:33 UTC
The advice given previously is complete enough that I won't address the solution(s) already given. Just as an aside however - since this isn't what you asked for - it's also possible to connect to the server you loaded the applet from with a socket-based connection. I know this can be made to a servlet on the server side, but I don't see why you coudn't connect to Perl code instead. That might afford you the most efficient conenction but adds nothing at all to security, compatibility, nor accessibility. It's just possible. To address those concerns you'd be better off providing a web service on the server & consuming it via the applet, as suggested above. Wait! This isn't a Parachute, this is a Backpack!	[reply]


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