Question

我有一个简单的问题：我试图从java应用程序C调用以下命令行：/ phantomjs / phantomjs chart / chart.js

我尝试过：

public static void go3(){
    Runtime rt=Runtime.getRuntime();
    try{
        final Process pr=rt.exec("cmd C:/phantomjs/phantomjs chart/chart.js");
        final int exitCode=pr.waitFor();
        if(exitCode!=0){ throw new RuntimeException("program didnt exit with 0, but with "+exitCode); }
        // System.out.println(pr.toString());
        // int exitStatus=pr.waitFor();
    }catch(IOException e){
        // TODO Auto-generated catch block
        e.printStackTrace();
    }catch(InterruptedException e){
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    System.out.println("done");
}

但我得到退出代码-1。我查看了有关stackoverflow的各种教程/问题，但它们都运行了一些简单的例子，我很难理解如何在.exec("what goes here?")内编写部分

Answer 1

找到答案：

public static void go4(){
    String[] command={"cmd","/k","cd /phantomjs&&phantomjs chart/chart.js"};
    Process p;
    try{
        p=Runtime.getRuntime().exec(command);
        PrintWriter stdin=new PrintWriter(p.getOutputStream());
        stdin.close();
        int returnCode;
        returnCode=p.waitFor();
        System.out.println("Return code = "+returnCode);

    }catch(IOException e1){
        e1.printStackTrace();

    }catch(InterruptedException e){
        e.printStackTrace();
    }

}

Java从命令行运行phantomjs

1 个答案: