Vfrdtyky

I created a spring boot project, which I'm running on a local tomcat (I'm planning to deploy this to a webserver). Within this project I created a rest-service, which should execute a .bat file.

my rest services look like this (neither of them works)

@RequestMapping(value = "/esc", method= RequestMethod.GET)

public String esc() throws IOException, InterruptedException {

      String folder = "P:\Documents\testcmd";

    String cmdarray = new String{"cmd -c","dosomething.cmd"};

    ProcessBuilder processBuilder = new ProcessBuilder( cmdarray );

    processBuilder.directory(new File(folder));

    Process process = processBuilder.start();



    int exitCode = -1;

    boolean finished = false;

    while ( !finished ) {

        exitCode = process.waitFor();

        finished = true;

    }

    return folder;

}



@RequestMapping(value = "/ex", method= RequestMethod.GET)

public String executeShellScript(){

    //final String shCmd = "/bin/bash -c helloworld.sh";

    System.out.println("Working Directory = " +

            System.getProperty("user.dir"));

    final String shCmd = "cmd -c P:/Documents/testcmd/dosomething.cmd";

    String output = executeCommand(shCmd);



    return output;

}

private String executeCommand(String command){

    Process p;

    InputStream in = null;

    String value = "";

    try {

        p = Runtime.getRuntime().exec(command);

        in = p.getInputStream();

        int ch;

        while((ch = in.read()) != -1) {

            value = String.valueOf((char)ch);

        }

    }catch (IOException e){

        e.printStackTrace();

    }

    return value;

}

I tried it with a processbuilder and with runtime.
The file I want to execute is in this folder: "P:Documentstestcmd"

Is it even possible to execute a local file with a tomcat server?

I solved the problem. The sollution with Runtime.getRuntime().exec(command) was correct. Only my system call was wrong. Instead of final String shCmd = "cmd -c P:/Documents/testcmd/dosomething.cmd"; I had to use "P:/Documents/testcmd/dosomething.cmd". In addition I had to change the dosomething.cmd because it was wrong. When executing the plain java code, the file would open a cmd terminal and then print hello in an endless loop. I changed the file content that instead of the endless loop in the terminal it prints hello into another file.

// method is mapped on root/ex

@RequestMapping(value = "/ex", method= RequestMethod.GET)

public String executeShellScript(){

    System.out.println("Working Directory = " +

            System.getProperty("user.dir"));

    final String shCmd = "P:\Documents\testcmd\dosomething.cmd -c";

    String output = executeCommand(shCmd);



    return output;

}

batch file before & after

@echo off

:start

echo hallo

pause

goto start

after

@echo off

@echo This is a test>> P:/Documents/testcmd/file.txt

@echo 123>> P:/Documents/testcmd/file.txt

@echo 245.67>> P:/Documents/testcmd/file.txt