java stdout_java – 将进程重定向到stdout

这使用一个读取执行程序生成的所有输出的类,并将其显示在自己的stdout中.

class StreamGobbler extends Thread {

InputStream is;

// reads everything from is until empty.

StreamGobbler(InputStream is) {

this.is = is;

}

public void run() {

try {

InputStreamReader isr = new InputStreamReader(is);

BufferedReader br = new BufferedReader(isr);

String line=null;

while ( (line = br.readLine()) != null)

System.out.println(line);

} catch (IOException ioe) {

ioe.printStackTrace();

}

}

}

Runtime rt = Runtime.getRuntime();

Process proc = rt.exec(“javac”);

//output both stdout and stderr data from proc to stdout of this process

StreamGobbler errorGobbler = new StreamGobbler(proc.getErrorStream());

StreamGobbler outputGobbler = new StreamGobbler(proc.getInputStream());

errorGobbler.start();

outputGobbler.start();

proc.waitFor();