How to identify the OS name and version in Client machine using java?

Question

<% System.getProperty("os.name") %> can be used to identify the OS name running in the server machine. But how can i identify the OS information in the client machine using java in a web application?

Answer 1

You can't. The browser doesn't send detailed OS information to web servers.

You can do some wild guess from the user-agent but that's not accurate at all.

Answer 2

You'd have to use javascript or other client-side technology to find out. Then, send it back to the server throuht http.

Answer 3

您可以在HTTP标头中获得一些信息，例如User-Agent。

Answer 4

如果可以使用javascript，则可以简单地找到navigator.appVersion并使用它来确定操作系统，例如appVersions是否为Windows 5.0，这意味着系统正在使用Windows XP。