I am writing a utility to start and stop windows services. The program will be distributed across many computers with differing levels of u开发者_如何学JAVAser privileges so I don't want to use the command line. I've tried using JNA,
import com.sun.jna.platform.win32.W32Service;
import com.sun.jna.platform.win32.W32ServiceManager;
import com.sun.jna.platform.win32.Winsvc;
/**
*
* @author
*/
public class WindowsServices {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
try
{
// TODO code application logic here
W32ServiceManager serviceManager = new W32ServiceManager();
W32Service service = serviceManager.openService("uvnc_service", Winsvc.SERVICE_ACCEPT_STOP);
service.stopService();
service.close();
}
catch (Exception ex)
{
ex.printStackTrace();
}
}
}
When I run the program I get the following error
com.sun.jna.platform.win32.Win32Exception: The handle is invalid. at com.sun.jna.platform.win32.W32ServiceManager.openService(W32ServiceManager.java:77) at windowsservices.WindowsServices.main(WindowsServices.java:26)
Any suggestions would be most helpful.
Thanks for the suggestion the author of the question found the error.
import com.sun.jna.platform.win32.W32Service;
import com.sun.jna.platform.win32.W32ServiceManager;
import com.sun.jna.platform.win32.Winsvc;
/**
*
* @author
*/
public class WindowsServices {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
try
{
W32ServiceManager serviceManager = new W32ServiceManager();
serviceManager.open(Winsvc.SC_MANAGER_ALL_ACCESS);
W32Service service = serviceManager.openService("uvnc_service", Winsvc.SC_MANAGER_ALL_ACCESS);
service.startService();
service.close();
} catch (Exception ex)
{
ex.printStackTrace();
}
}
}
The error was that the code didn't open the Service Control Manager. I was looking on MSDN and found the process that I needed to follow. I also chanced the permission value, that might also of caused a failure.
We use Runtime.getRuntime().exec(command)
and then execute the command
cmd /c net start
to start services and
cmd /c net stop
to stop services.
Of course you have to know the service names (and in our case it is DB2 we are after). But this has worked for us.
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