Running windows command line from Java

Question

I'm trying to run the following command

tesseract test10.png text -l nor

using Java's

Runtime.getRuntime().exec()

command.

It is working when using, the simple "cmd /c dir" command, but I can not figure out the correct syntax/way to use the command.

Please help!

Answer 1

do you use exec(String cmd) or exec(String[] cmd)?

sometimes I had problems with the first one, though I can't tell, what went wrong

if you exec "tesseract test10.png text -l nor" then try out "cmd /C \\"tesseract test10.png text -l nor\\"" (and the same as String[]) maybe some of these work

Answer 2

This works:

try {
        Runtime rt = Runtime.getRuntime();
        Process pr = rt.exec("C:\\Path_to_tesseract\\tesseract.exe D:\\image.png D:\\outputFile");

        BufferedReader input = new BufferedReader(new InputStreamReader(pr.getInputStream()));

        String line=null;

        while((line=input.readLine()) != null) {
            System.out.println(line);
        }

        int exitVal = pr.waitFor();
        System.out.println("Exited with error code "+exitVal);

    } catch(Exception e) {
        System.out.println(e.toString());
        e.printStackTrace();
    }

Answer 3

看看OCR.java的文件VietOCR ，它使用的ProcessBuilder调用正方体可执行文件。