bat文件无法启动，并且bat文件位于文件夹中

Question

I am trying to launch a bat file. The bat file is in a folder. The folder contains all the executable jar file. I tried this code to launch the bat file but unable.

    ProcessBuilder pb = new ProcessBuilder( "C:\\Users\\user\\Desktop\\NetBeansProjects\\Genomic DataWarehouse Project\\biodwh.startBioDWH.bat" );
    pb.redirectErrorStream(true);
      Process p = pb.start();
      InputStream is = p.getInputStream();
      BufferedReader br = new BufferedReader( new InputStreamReader( is ) );
      for ( String line = br.readLine(); line != null; line = br.readLine() )
      {
              System.out.println( ">" + line ); 
      }
      p.waitFor();

Answer 1

try use this
Runtime.getRuntime().exec("cmd /c start C:\\Users\\user\\Desktop\\NetBeansProjects\\Genomic DataWarehouse Project\\biodwh.startBioDWH.bat");

Answer 2

in your .bat add the line pushd %~dp0

this will change the current drive and path to the one of the bat file.

Answer 3

Ok, seems I misunderstood the question.

I think you can't execute batch files directly but need to launch it using cmd.exe. Try adding cmd /c (with a space at the end) to your new ProcessBuilder line :

ProcessBuilder pb = new ProcessBuilder( "cmd /c C:\\Users\\user\\Desktop\\NetBeansProjects\\Genomic DataWarehouse Project\\biodwh.startBioDWH.bat" );

Or ou can try to execute the bat file this way :

String path="C:\\Users\\user\\Desktop\\NetBeansProjects\\Genomic DataWarehouse Project\\";
File dir = new File(path);
Process process = Runtime.getRuntime().exec("cmd /c "+path+"biodwh.startBioDWH.bat", null, dir);

Or you can make it shorter if you don't need the batch file to be executed from the folder where it resides

Process process = Runtime.getRuntime().exec("cmd /c C:\\Users\\user\\Desktop\\NetBeansProjects\\Genomic DataWarehouse Project\\biodwh.startBioDWH.bat");