如何使用一些参数从Java中调用.exe文件

Question

我需要调用cowsay.exe (这个程序使用符号来绘制动物)，并执行命令: cowsay "hello“。如何将"hello“作为参数传递？

public class cowsay {
    public static void main(String[] args) throws IOException {
        Process process = new ProcessBuilder("D:\\cowsay.exe","cowsay Hello").start();
        InputStream is = process.getInputStream();
        InputStreamReader isr = new InputStreamReader(is);
        BufferedReader br = new BufferedReader(isr);
        String line;
        while ((line = br.readLine()) != null) {
            System.out.println(line);
        }
    }

Answer 1

您可以使用java.lang.Runtime类：

public class cowsay {
    public static void main(String[] args) throws IOException {
        Process process = 
                Runtime.getRuntime().exec("cowsay hello");
        InputStream is = process.getInputStream();
        InputStreamReader isr = new InputStreamReader(is);
        BufferedReader br = new BufferedReader(isr);
        String line;
        while ((line = br.readLine()) != null) {
            System.out.println(line);
        }
    }
}

Answer 2

正如Fungucide指出的那样，您可以使用RunTime类。但是，我建议您使用将参数作为数组接受的方法。示例代码：

public static void main(String[] args)  {
  Try{
     String[] command={"D:\\cowsay.exe","cowsay","Hello"};
            Runtime.getRuntime().exec(command);
    }catch(Exception e){System.out.println(e.getMessage());}
}

这是如果您想要将"cowsay“作为参数的话。如果你想要“d=only”作为参数，那么你可以这样做：

public static void main(String[] args)  {
  Try{
     String[] command={"D:\\cowsay.exe","Hello"};
            Runtime.getRuntime().exec(command);
    }catch(Exception e){System.out.println(e.getMessage());}
}