Programming Forums > Application Development > Java

uman · Jul 4th, 2006, 11:53 AM

Wouldn't that be for a GET request Game_Ender?

By the way, it seems like people could easily abuse this and put whatever they wanted on the high-score list.

Game_Ender · Jul 4th, 2006, 1:37 PM

It could quite possibly be a GET request, I know you can do html forms through both a POST and a GET and I don't know the exact differences between the two. Html is not my strong suit so you are probably right. That is why I advised him to do some reading on html forms, I know where to point but not exactly what to say.

titaniumdecoy · Jul 4th, 2006, 1:46 PM

You might want to look into JSP (Java Server Pages).

Eric the Red · Jul 4th, 2006, 2:12 PM

Quote:

Originally Posted by uman

By the way, it seems like people could easily abuse this and put whatever they wanted on the high-score list.

They won't be able to see where the data is being sent. Its actually on a completely different domain than where the Java applet is being used. The Java applet is loaded on my "cogeco.ca" web space, while the highscore is sent to a remote PHP server at "arbornet.org" thus, the user doesn't know where the highscores would be found.

The problem is getting a string "10294059" for instance, to the action.php program. Somehow by sending a string from the java applet to the URL.

(Toggle Plain Text)

import java.awt.*;
import java.io.*;
import java.applet.*;
import java.net.*;

class SaveData extends Applet
{
    public void init ()
    {
        String line;
        URL url = null;
        try
        {
            url = new URL ("http://m-net.arbornet.org/~eric/action.php");
        }
        catch (MalformedURLException e)
        {
            System.out.println ("Malformed URL ");
            stop ();
        }

    }
}

that red writting is the URL. So how do I send a string to this site?

Jimbo · Jul 4th, 2006, 2:27 PM

I don't know how to make Java and PHP interact, but I can explain the GET vs. POST a little. These are the two methods through which forms are submitted (hence the method="get" or method="post" attribute).

GET parameters are simply appended to the url after a '?' and are separated by '&'. For instance, if a url was

(Toggle Plain Text)

http://someplace.com/aPage.php?player=someone&score=10294059

the receiving page would have $_GET["player"] == someone and $_GET["score"] == 10294056. However, as mentioned this is not very secure. A user could easily put in whatever values they wanted to send to the page. On the other hand, GET variables can be bookmarked; this doesn't pertain to your case, but it's something to considter sometimes.

POST variables don't show up in the URL. I'm actually not sure where they're sent, but it is more difficult to change them. Of course, they arrive to the PHP page in $_POST, too. Pages relying on POST variables cannot be bookmarked since you can't set the values by hand (or very easily at least - I think there's some browsers that'll allow a user to set POST variables).

HTH

DaWei · Jul 4th, 2006, 3:26 PM

I'm curious as to why you are using Java (the game itself?). However, there are ways to interact between Java and Javascript. The Javascript could conduct the appropriate request, and there you go, Aunt Gertie's your uncle.

nemesis · Jul 4th, 2006, 3:34 PM

Am i the only one who is wondering who Aunt Gertie is and why she is my uncle?

She was refered to numerious times in your openBSD thread. I guess i must have missed something. lol.

coldDeath · Jul 4th, 2006, 3:53 PM

I think Aunt Gertie is meant to represent a standard computer user. I may be wrong.

Eric the Red · Jul 4th, 2006, 5:31 PM

the Java Applet is the game itself which takes care the game and sending info to a web page "action.php". Javascript isn't an option, unfortunately.

The method I would have to use is the "post" method. "Figure A.1" is the html page that would normaly send the score. However, instead of telling the user to "go to this website and enter your score", I want to do it for them. Thus, my java applet must do this. Interacting with the PHP program (on the server) shouldn't be a problem. All I have to do is basically send the score data to the site.

You guys are telling me to send the info to the url. Well the url is similar to "http://m-net.arbornet.org/~eric/action.php" and I'm not sure exactly what I'm supposed to do with the url once I've formed it. So far, I use the url class to form the url with

(Toggle Plain Text)

import java.applet.*;
import java.awt.*;
import java.io.*;
import java.net.*;
...
url = new URL ("http://m-net.arbornet.org/~eric/action.php");
// String score = 1012345";

However, once this is done I don't know what method to use to send the score to the url
Any ideas?

Figure A.1

(Toggle Plain Text)

<html>
<body>
<form action ="action.php" method="post">
<p>Your name: <input type="text" name="strname"/></p>
<input type="submit"/>
</body>
</html>

DaWei · Jul 4th, 2006, 6:47 PM

The fact that Java is required (because of the game) doesn't mean you can't make a Javascript/Java object, access it from both sides, and use it strictly as a communication mechanism between the applet and the page. It's been over three years since I did this, but if you have the O'Reilly book on Javascript you'll find it covered to some extent there. I had a similar situation with a web casino. No way Javascript could produce things like a slot machine's spinning wheels in sufficient time (although it was fine for keno).

Jul 4th, 2006, 11:53 AM	#11
uman Expert Programmer Join Date: Dec 2004 Posts: 794 Rep Power: 4	Wouldn't that be for a GET request Game_Ender? By the way, it seems like people could easily abuse this and put whatever they wanted on the high-score list. __________________ Few people deserve to be compared to (Rush) Limbaugh, most of them were convicted at the Nuremburg trials. --WilliamSChips on Slashdot

Jul 4th, 2006, 2:27 PM	#15
Jimbo Battle Programmer Join Date: Feb 2006 Location: Bellevue, WA, USA Posts: 748 Rep Power: 3	I don't know how to make Java and PHP interact, but I can explain the GET vs. POST a little. These are the two methods through which forms are submitted (hence the method="get" or method="post" attribute). GET parameters are simply appended to the url after a '?' and are separated by '&'. For instance, if a url was (Toggle Plain Text) http://someplace.com/aPage.php?player=someone&score=10294059 http://someplace.com/aPage.php?player=someone&score=10294059 the receiving page would have $_GET["player"] == someone and $_GET["score"] == 10294056. However, as mentioned this is not very secure. A user could easily put in whatever values they wanted to send to the page. On the other hand, GET variables can be bookmarked; this doesn't pertain to your case, but it's something to considter sometimes. POST variables don't show up in the URL. I'm actually not sure where they're sent, but it is more difficult to change them. Of course, they arrive to the PHP page in $_POST, too. Pages relying on POST variables cannot be bookmarked since you can't set the values by hand (or very easily at least - I think there's some browsers that'll allow a user to set POST variables). HTH

Jul 4th, 2006, 3:26 PM	#16
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	I'm curious as to why you are using Java (the game itself?). However, there are ways to interact between Java and Javascript. The Javascript could conduct the appropriate request, and there you go, Aunt Gertie's your uncle. __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Jul 4th, 2006, 3:34 PM	#17
nemesis Programmer Join Date: Aug 2005 Location: Bristol, England Posts: 71 Rep Power: 3	Am i the only one who is wondering who Aunt Gertie is and why she is my uncle? She was refered to numerious times in your openBSD thread. I guess i must have missed something. lol. __________________ Bite My Shiny Metal Ass

Jul 4th, 2006, 3:53 PM	#18
coldDeath Expert Programmer Join Date: Aug 2005 Location: UK Posts: 862 Rep Power: 3	I think Aunt Gertie is meant to represent a standard computer user. I may be wrong. __________________ Programming Tutorials - Linux Installation Guide - Learn Python - Learn C++ Got Slack? Join us at #programmingforums @ irc.freenode.net! My software never has bugs. It just develops random features.

Jul 4th, 2006, 1:37 PM	#12
Game_Ender Professional Programmer Join Date: May 2006 Location: Maryland, USA Posts: 306 Rep Power: 3	It could quite possibly be a GET request, I know you can do html forms through both a POST and a GET and I don't know the exact differences between the two. Html is not my strong suit so you are probably right. That is why I advised him to do some reading on html forms, I know where to point but not exactly what to say.

Jul 4th, 2006, 1:46 PM	#13
titaniumdecoy Expert Programmer Join Date: Nov 2005 Posts: 837 Rep Power: 3	You might want to look into JSP (Java Server Pages).

Jul 4th, 2006, 5:31 PM	#19
Eric the Red Hobbyist Programmer Join Date: Feb 2006 Posts: 214 Rep Power: 0	the Java Applet is the game itself which takes care the game and sending info to a web page "action.php". Javascript isn't an option, unfortunately. The method I would have to use is the "post" method. "Figure A.1" is the html page that would normaly send the score. However, instead of telling the user to "go to this website and enter your score", I want to do it for them. Thus, my java applet must do this. Interacting with the PHP program (on the server) shouldn't be a problem. All I have to do is basically send the score data to the site. You guys are telling me to send the info to the url. Well the url is similar to "http://m-net.arbornet.org/~eric/action.php" and I'm not sure exactly what I'm supposed to do with the url once I've formed it. So far, I use the url class to form the url with (Toggle Plain Text) import java.applet.; import java.awt.; import java.io.; import java.net.; ... url = new URL ("http://m-net.arbornet.org/~eric/action.php"); // String score = 1012345"; import java.applet.; import java.awt.; import java.io.; import java.net.; ... url = new URL ("http://m-net.arbornet.org/~eric/action.php"); // String score = 1012345"; However, once this is done I don't know what method to use to send the score to the url Any ideas? Figure A.1 (Toggle Plain Text) <html> <body> <form action ="action.php" method="post"> <p>Your name: <input type="text" name="strname"/></p> <input type="submit"/> </body> </html> <html> <body> <form action ="action.php" method="post"> <p>Your name: <input type="text" name="strname"/></p> <input type="submit"/> </body> </html> __________________ Death smiles at us all. All a man can do is smile back.

Jul 4th, 2006, 6:47 PM	#20
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	The fact that Java is required (because of the game) doesn't mean you can't make a Javascript/Java object, access it from both sides, and use it strictly as a communication mechanism between the applet and the page. It's been over three years since I did this, but if you have the O'Reilly book on Javascript you'll find it covered to some extent there. I had a similar situation with a web casino. No way Javascript could produce things like a slot machine's spinning wheels in sufficient time (although it was fine for keno). __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Programming Forums > Application Development > Java

Java and Web Pages