在Java应用程序中侦听自定义协议

Question

I have created a java app and I would like to be able to execute actions in this app by calling some custom urls (ex: myapp://do_this)

I have already searched for this, and I have found some information about handling such urls in java (URLStreamHandler).

The only part I'm missing, is how to tell the OS to redirect the "myapp://" protocol to my application.

More and more apps are defining their own protocol and I was wondering whether it was possible to create such kind of things in Java.

Thanks

Answer 1

The protocol in URLStreamHandler will be used inside of the jvm. Typical usage is something like res://... for resources. The OS and the browsers have their own sets of protocols (ftp, mailto).

You could probably extend Firefox with a plugin to handle your protocol.

But then you have to send that to your app, running as a small "web" server.

Forget for a moment URLStreamHandler.

Embed the Jetty web server in your app, say on port 8765, and write a servlet to handle your URLs. Then you can in your browser type "http://localhost:8765/do_this". Should suffice.

Answer 2

To add a new protocol, one needs to implement an XPCOM component. Since XPCOM allows programming languages to talk to eachother, XPCOM components can be implemented in C++ or JavaScript currently in Mozilla.

http://www.nexgenmedia.net/docs/protocol/ will help you to understand more.

i think this is what you want.

Answer 3

As others have said, getting browsers to understand a new protocol name is browser (and OS) specific - you can't do it from the server.

However, would Java Web Start ( http://download.oracle.com/javase/tutorial/deployment/webstart/ ) fit your requirements? Most browsers are already set up to handle JWS applications correctly.