使用Java从BAT文件获取输出 [英] Get output from BAT file using Java

问题描述

我正在尝试运行.bat文件并获取输出.我可以运行它，但无法在Java中获得结果:

I'm trying to run a .bat file and get the output. I can run it but I can't get the results in Java:

String cmd = "cmd /c start C:\\workspace\\temp.bat";

Runtime r = Runtime.getRuntime();
Process pr = r.exec(cmd);

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

String s ;
while ((s = stdInput.readLine()) != null) {
    System.out.println(s);
}

结果为 null .不知道为什么我得到这个.请注意，我使用的是Windows 7.

The result is null. No idea why I get this. Note that I'm using Windows 7.

推荐答案

使用"cmd/c start [...]"运行批处理文件将创建一个子进程，而不是直接运行您的批处理文件.

Using "cmd /c start [...]" to run a batch file will create a sub process instead of running your batch file directly.

因此，您将无法访问其输出.要使其正常工作，您应该使用:

Thus, you won't have access to its output. To make it work, you should use:

String cmd = "C:\\workspace\\temp.bat";

它可以在Windows XP下运行.

It works under Windows XP.

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