在java中执行外部程序 [英] Execute external program in java

问题描述

我尝试创建一个调用外部程序的应用程序，我必须传递两个参数。它没有给出任何错误。用c ++编写的program.exe拍照并修改了txt文件的内容。 java程序运行但它什么都不做

I tried to make an application that calls an external program that I have to pass two parameters. It doesn't give any errors.The program.exe,written in c++, takes a picture and modifies the content of txt file. The java program runs but it does nothing

这是我的示例代码

    String[] params = new String [3];
    params[0] = "C:\\Users\\user\\Desktop\\program.exe";
    params[1] = "C:\\Users\\user\\Desktop\\images.jpg";
    params[2] = "C:\\Users\\user\\Desktop\\images2.txt";
    Runtime.getRuntime().exec(params);

推荐答案

从here

Process process = new ProcessBuilder("C:\\PathToExe\\MyExe.exe","param1","param2").start();
InputStream is = process.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String line;

System.out.printf("Output of running %s is:", Arrays.toString(args));

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

更多信息这里

有关如何传递命令的其他问题在哪里和 here

Other issues on how to pass commands here and here

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