java在netstat中写cmd [英] java write netstat in cmd

问题描述

我的目标是在我的计算机上打印所有互联网连接。当我键入netstat在cmd我获得互联网连接列表。我想在java中自动执行相同的操作。

My goal is to print all the internet connections on my computer. When i type netstat on cmd i get the internet connections list. I wanted to do the same in java, automatically.

我的代码：

Runtime runtime = Runtime.getRuntime();

process = runtime.exec(pathToCmd);

byte[] command1array = command1.getBytes();//writing netstat in an array of bytes
OutputStream out = process.getOutputStream();
out.write(command1array);
out.flush();
out.close();

readCmd();  //read and print cmd

但是使用这个代码我得到C：\eclipse\workspace\\ \\ Tracker> Mais？而不是连接列表。显然我正在使用eclipse，在windows 7.我做错了什么？我看过类似的话题，但我不能找到什么错。感谢您的答案。

But with this code i get C:\eclipse\workspace\Tracker>Mais? instead of the list of connections. Obviously i'm working with eclipse, in windows 7. What am I doing wrong? I've looked in similar topics but i cound't find whats wrong. Thank you for the answers.

编辑：

public static void readCmd() throws IOException {

    is = process.getInputStream();
    isr = new InputStreamReader(is);
    br = new BufferedReader(isr);
    String line;

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

推荐答案

也可以使用 <$ c $的实例c> java.util.Scanner 读取命令的输出。

You can also use an instance of java.util.Scanner to read the output of the command.

public static void main(String[] args) throws Exception {
    String[] cmdarray = { "netstat", "-o" };
    Process process = Runtime.getRuntime().exec(cmdarray);
    Scanner sc = new Scanner(process.getInputStream(), "IBM850");
    sc.useDelimiter("\\A");
    System.out.println(sc.next());
    sc.close();
}

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