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How to use Java for CGI

Posted on 1997-03-05
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Last Modified: 2013-12-25
How can I use Java for CGI under Windows NT 4? How can I run a Java standalone application as if it was a CGI applocation? How can I make the application return HTML to the browser?

Tnx.
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Question by:krazy
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by:krazy
ID: 1827735
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by:pluim
ID: 1827736
What is the problem, exactly? How to write a CGI program in
Java, CGI in general, calling the Java program itself, etc.


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Author Comment

by:krazy
ID: 1827737
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pluim earned 300 total points
ID: 1827738
Ok - I assume you know your way around Java and how CGI
programs work in general. If not, I can fill in any details
you might need.

Create your Java CGI program, e.g.

  class HelloWorld {
    public static void main (String args[]) {
      System.out.println("Content-type: text/html\n");
      System.out.println("<HTML><H1>Hello World</H1></HTML>"
      }

This will return a very simple HTML document.

Now, how to launch this program. Create a batch file
called helloworld.bat, containing:
   x:\javapath\java y:\myprog\HelloWorld

Put this file in your /cgi-bin directory.

Create an HTML form with a button that points to
/cgi-bin/helloworld.bat:
  <form method="POST" action="/cgi-bin/helloworld.bat">
  <input type=submit value="Run Programt"><BR>
  </form>

If you want to pass information from the form to the program
(which is generally why you would use forms in the first
place) things are a little more difficult.
Don't want to take the easy way out, but take look at
    http://www.apl.jhu.edu/~hall/java/#CGI
It has four or five really simple examples which should
get you started - and it saves me from having to cut and
paste that code into this little box.


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