How to run a batch file with arguments in administrator mode from JavaSwing button using process bui-CodePudding

I am creating a Java Swing application where I am taking input from user which will be used as arguments for a batch file.

After pressing a button, my batch file should get launched in ADMIN mode along with the arguments provided by user.

This is the command line:

powershell Start-Process -Verb runas cmd '/k System.getProperty("user.dir")   batchFilePath  arg1  ""   arg2   ""  arg3'

This command is working properly when we paste it in CMD window.

But I want code for a Java application so that we can run it from JButton. So I used ArrayList and given this ArrayList as input to ProcessBuilder but I am getting an error.

code:

String launchCMD= System.getProperty("user.dir")   batchFilePath  arg1  ""   arg2   ""  arg3
final ArrayList<String> commands = new ArrayList<String>();
commands.add("powershell Start-Process -Verb runas cmd \'/k ")
commands.add(launchCMD)
commands.add("\'" );

ProcessBuilder pr=new ProcessBuilder(commands);
pr.start();

error:

java.io.IOException: Cannot run program ... : CreateProcess error=2, The system cannot find the file specified

CodePudding user response：

Your question is not really related to Swing, it is related to how to use class ProcessBuilder and that class is not a terminal emulator. It does not parse a command line that you enter into a PowerShell window. You need to split the command into tokens. That's why the ProcessBuilder constructor takes a list of strings. Note that the parameters to ProcessBuilder constructor do not have to be string literals. You can create a string any way you like and pass it as an argument to the ProcessBuilder constructor.

You didn't post a sample batch file so I wrote one of my own, named showargs.bat which simply echoes its first argument.

@echo off
echo %1

The command that worked for me (i.e. ran the batch file as administrator) was:

powershell.exe -Command Start-Process cmd.exe -ArgumentList '/k C:\Users\USER\showargs.bat Diego' -Verb RunAs

Java code that executes the above command using class ProcessBuilder:

ProcessBuilder pb = new ProcessBuilder("powershell.exe",
                                       "-Command",
                                       "Start-Process",
                                       "cmd.exe",
                                       "-ArgumentList",
                                       "'/k C:\\Users\\USER\\showargs.bat Diego'",
                                       "-Verb",
                                       "RunAs");
try {
    Process proc = pb.start();
    int status = proc.waitFor();
    System.out.println("status = "   status);
}
catch (InterruptedException | IOException x) {
    x.printStackTrace();
}