在java中将推送通知发送到桌面应用程序

Question

Here is my application scenario...

1. User requests for login and sends credentials to the web server(From Desktop application using httpClient API).

2. Servlet(tomcat) authenticates user and send valid or invalid user information. If user is registered user, servlet will save IP address on the server.

3. Now I have to send some text to the user without getting another request(ie server push sort of technology). How can I accomplish this functionality and using what technology?

Answer 1

I would keep a connection to the server since the other solution requires that you implement a server that runs in the clients and that the clients have public IP addresses.

In chrome you can use background pages to keep the connection so that you can close the browser. Use desktop notifications from the background page. Other browsers use other techniques. As a fallback you require the page to be open.

Now to the push. My favorite is to use web sockets . But there are several other techniques for this. Comet is a good place to start if you need more info.

If still want to go for the other solution with a server component running at each client. You will have to implement a standalone client. Is this what you want?