hui zhang wrote:
> Hi Everybody,
>
> Now I am trying to launch an external application, for example, "top"
> ,in my web application, and killing it by PID after a while. But when
> I execute Runtime.getRuntime.exec("top") in my JSP page or Servlet,
> Tomcat is stuck in that page and do not display anything because it
> can not stop running until that "commnad" is terminated, which means
> it waiting for the response from Runtime.getRuntime.exec("top"). It
> seems that it will run forever. Is there any solution to solve this
> problem? I mean that JSP page can execute the following code no matter
> if it finish the process is done.
>
> BTW, I do not use System.exit() in my program. It may cause Security
> Manager problem.
> Thanks and best regards,
>
> Hui
>
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>
Hey,

I'm new to the list and all, but you might want to try executing "top"
in batch mode. The command line option is -b on my gentoo linux box.
Also, be careful of executing commands from applets and such. Another
thing might be user permissions as well. You could try executing the
command and redirecting the output to a file and parsing the file instead.

Zack Grafton

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