Search...
FAQs Subscribe
Pie
FAQs
Recent topics Flagged topics Hot topics Best topics
Search...
Search within JNLP and Web Start Search Coderanch
Advance search Google search
Register / Login
This week's book giveaway is in the OCP forum.
We're giving away four copies of OCP Oracle Certified Professional Java SE 11 Developer Practice Tests and have Scott Selikoff and Jeanne Boyarsky on-line!
See this thread for details.
Win a copy of OCP Oracle Certified Professional Java SE 11 Developer Practice Tests this week in the OCP forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
advertise on coderanch building better world book thread boost book review grid meaningless drivel
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Paul Clapham
  • Jeanne Boyarsky
  • Ron McLeod
  • Tim Cooke
Sheriffs:
  • Devaka Cooray
  • paul wheaton
  • Mark Herschberg
Saloon Keepers:
  • Tim Moores
  • Tim Holloway
  • Stephan van Hulst
  • Frits Walraven
  • Jj Roberts
Bartenders:
  • Carey Brown
  • salvin francis
  • Piet Souris

Not accessing or saving data in browser in a Web Start application

 
Mishaal Khan
Ranch Hand
Posts: 61
posted 11 years ago
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
    Send
  • Quote
  • Report post to moderator
Hello,

I ' m trying to run a swing application which is writing and reading data from MySql Database in
browser using JNLP file. Application is working fine if I run it on desktop , I mean its saving and
retrieveing data , but when I run the appplication in browser it is displaying the window with all the fields.
But all the data related code is not responding and also not showing any errors. Any clue ,what am I missing?



 
Paul Clapham
Marshal
Posts: 26377
81
I like...
Eclipse IDE Firefox Browser MySQL Database
posted 11 years ago
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
    Send
  • Quote
  • Report post to moderator
How do you run your JNLP application in the browser?
 
Mishaal Khan
Ranch Hand
Posts: 61
posted 11 years ago
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
    Send
  • Quote
  • Report post to moderator
Thanks for the reply.

I simply type the address of my html page which has javascript code
to initilaize the launch button i.e here the code for the html page,

<body>
....
<script src="http://www.java.com/js/deployJava.js"></script>
<script>
// using JavaScript to get location of JNLP file relative to HTML page
var dir = location.href.substring(0, location.href.lastIndexOf('/')+1);
var url = dir + "dynamictree-webstart.jnlp";
deployJava.createWebStartLaunchButton(url, '1.6.0');
</script>
....
</body>



when I click the button it starts the application and displays the window,but not diplaying
any data ,but working fine as a desktop appplication.

 
Paul Clapham
Marshal
Posts: 26377
81
I like...
Eclipse IDE Firefox Browser MySQL Database
posted 11 years ago
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
    Send
  • Quote
  • Report post to moderator
Ah, I see. So actually you are using the browser to download and install the application on the client system. So the installation is working correctly, and the application starts running on the client system? You will know if it does, because it will start up in a separate window and you can close the browser without causing the application to terminate. Can you confirm that?
 
Mishaal Khan
Ranch Hand
Posts: 61
posted 11 years ago
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
    Send
  • Quote
  • Report post to moderator
Yes, even when I close the browser window the application keeps running.
Any advice what can I do to run as expected i.e interact with database?

Thanks.
 
Paul Clapham
Marshal
Posts: 26377
81
I like...
Eclipse IDE Firefox Browser MySQL Database
posted 11 years ago
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
    Send
  • Quote
  • Report post to moderator
Okay. Then you're just running it in the normal way. (Your reference to "running in the browser" confused me.) Anyway it's just an ordinary Java application, so you connect to the database in the normal way. If your code fails to connect to the database, do you have any way of finding out (a) that it failed to connect, and (b) the errors which caused it to fail? If you don't, then your first step should be to fix that problem.

I'm guessing that probably you just need to sign the application, but it's certainly possible that (for example) you hard-coded "localhost" as the location of the database server, and that worked OK in your testing because your test machine was the database server but now it doesn't work in the wild. Or there could be any number of other problems.
 
Mishaal Khan
Ranch Hand
Posts: 61
posted 11 years ago
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
    Send
  • Quote
  • Report post to moderator
Yes I have hardcoded the server location as localhost and as you said its not able to find the server ,so what do mean
by sign the application ? Could it solve the problem ?

Thanks.
 
Paul Clapham
Marshal
Posts: 26377
81
I like...
Eclipse IDE Firefox Browser MySQL Database
posted 11 years ago
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
    Send
  • Quote
  • Report post to moderator

Mishaal Khan wrote:Yes I have hardcoded the server location as localhost and as you said its not able to find the server ,so what do mean
by sign the application ? Could it solve the problem ?


Well, it might, but first you have to fix the obvious stuff. The server location in your JDBC URL has to be the actual location of the database server. If it says "localhost" then that means "this computer" and therefore the application won't work on any computer except the database server computer. This might be the desired outcome but if it is, there isn't any point in distributing it via Web Start.
 
I got this tall by not having enough crisco in my diet as a kid. This ad looks like it had plenty of shortening:
the value of filler advertising in 2021
https://coderanch.com/t/730886/filler-advertising
reply
reply
    Bookmark Topic Watch Topic
  • New Topic
Boost this thread!
Similar Threads
More...