Re: embed .jar files

From:
 bencoe@gmail.com
Newsgroups:
comp.lang.java.programmer
Date:
Sat, 23 Jun 2007 00:09:20 -0700
Message-ID:
<1182582560.180955.122000@c77g2000hse.googlegroups.com>
On Jun 23, 2:47 am, Pasquale <spdr...@NOTHNXtelusplanet.net> wrote:

ben...@gmail.com wrote:

It sounds to me that what you're trying to do is get a servlet up and
going. If you're hoping to use third party libraries the /WEB-INF/
classes/ folder represents the root directory of your servlet
application... you can place whatever libraries you want to use here
which can be accessed via your servlets. The servlet itself is sort of
like a PHP file, in that it takes care of rendering a web-page on the
fly for a client connecting to it... here's an example of.

import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class login extends HttpServlet {
    public void doGet(HttpServletRequest request,HttpServletResponse
response)

        throws IOException, ServletException

    {
           String user=request.getParameter("user");// Get info from
forms.

           //Perhaps someone is logged in already...Check Cookies.

           if(user==null||pass==null){

                   Cookie[] cookies = request.getCookies();
                   Cookie temp;

                   if(cookies!=null)
                   for(int i=0;i<cookies.length;i++){
                           temp=cookies[i];

                           if(temp.getName().equals("user"))

                                   user=temp.getValue();

                           if(temp.getName().equals("pass"))

                                   pass=temp.getValue();

                   }
           }

           PrintWriter out = response.getWriter();
                response.setContentType("text/html");
           out.println(wrap.runTemplate(""));
           out.close();
    }

    public void doPost(HttpServletRequest request,HttpServletResponse
response)

        throws IOException, ServletException

    {
        doGet(request, response);
    }

}

This is a simple servlet that shows most of the basic functions you'd
probably want to be using, with a bit of code omitted, once you get
something like this up and running, you can put the other libraries
you want to use in the /WEB-INF/classes folder, and access them like
you would in any java application... keeping in mind you use the
response as the output stream.

Ben.


Ben,

Thanks for the response, but I'm trying to find out how to have a .jar
file display in a HTML page. See example below, which needs more
attributes. I guess I'm looking for some beginner guidance from where to
upload what files to what tag/attributes I need within my HTML page to
display the file(s).

For example:
<applet archive="Z3.jar">
<PARAM NAME="archive" VALUE="Z3.jar">
</applet>

Pasquale


Here's some HTML code I had for embedding an Applet on my server.

 <applet code="com.sun.opengl.util.JOGLAppletLauncher"
      width=600
      height=560
      codebase="http://www.mariealighieri.com/Vulgate3D/"
archive="jogl.jar,gluegen-
rt.jar,vulgate.jar,DolphinNet.jar,GameServe.jar,GaveView.jar,GUI.jar,Assignments.jar">
   <param name="subapplet.classname"
VALUE="com.Vulgate.View.Vulgate3D">
   <param name="subapplet.displayname" VALUE="Vulgate 3D">
   <param name="progressbar" value="true">
   <param name="cache_archive" VALUE="jogl.jar,gluegen-rt.jar">
   <param name="cache_archive_ex" VALUE="jogl.jar;preload,gluegen-
rt.jar;preload">
 </applet>

This is HTML code that you can place on any page it has nothing to do
with servlets.

You'd include any archives you want to use in the archive field... to
actually use these libraries, mind you, you would have to write an
Applet or JApplet... This is a Java awt or Swing application that is
designed specifically to be embedded in a website...

So to summarize the process:

- You might have some libraries you plan on using, I don't have a clue
what you're trying to do.
- You would take these libraries and make, I would suggest a Swing
application, you can find lots of tutorials about this on the
Internet.
- Take your JPanel and port it to a JApplet. (pretty simple)
- Take your .lib files used and place them in a directory on your
server.
- Take the .class file that represents your Applet and put it in that
folder.
- Take HTML code like the stuff I put above, the 'code' tag should
point to the .class file. the archive path to all the libraries you
want to use.

This is all assuming you're trying to make some sort of graphical
application, you might be better off learning about servlets if this
isn't the case .

Ben.

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