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Message:

using runtime.exec in a jsp

Posted by Doug on February 20, 2002 at 4:50 PM

CAN THIS BE DONE IN A JSP? I'VE TRIED TO IMPLEMENT IT, BUT THE CALL DOESN'T SEEM TO GO THROUGH. ANY SUGGESTIONS?

> Hi,
> I was trying to run a batch file from my program, so I did the following:
> public static void main (String []args) {
> /*
> Threadtest t = new Threadtest();
> t.start();*/
> testrun();
> }

> public static void testrun () {
> BufferedReader br = null;
> BufferedReader br2 = null;
> Process p = null;
> int status = -1;
> try {
> String osName = System.getProperty("os.name");
> if (osName.compareTo("Windows NT") == 0) {
> //String []test = "cmd.exe", "/c", "runtest.bat");
> p = Runtime.getRuntime().exec("cmd.exe /c runtest.bat ");
> }
> br = new BufferedReader(new InputStreamReader(p.getErrorStream()));
> String s;
> while ((s = br.readLine())!= null) {
> System.out.println(s);
> }
> br2 = new BufferedReader(new InputStreamReader(p.getInputStream()));
> while ((s = br2.readLine())!= null) {
> System.out.println(s);
> }
> br.close();
> br2.close();
> }catch (IOException ioex) {ioex.printStackTrace();}
> //return 0;
> }
> Now, this starts the dos prompt, and then the program waits on it.
> It only continues after I kill the dos prompt. Is there any way that I can start the process and then forget about it?
> I dont want to have any control after spawning off the process.
> Could anyone help me with this problem?
> Thanks
> Sasipriya