Question

我想运行命令

ipmsg.exe / MSG 192.168.0.8“文字消息”

由java程序。有人能帮助我吗？

我正在尝试以下几行。但它不起作用..

Runtime run_t = Runtime.getRuntime();

Process notify = run_t.exec("cmd /c ipmsg.exe /MSG 192.168.0.8 Hello");

PS： - 我的电脑已通过LAN连接到IP地址为192.168.0.8的计算机。

Answer 1

使用ProcessBuilder更好地处理外部流程。此外，除了命令名称之外，始终将参数作为单独的字符串传递。

Answer 2

您需要两个线程来捕获标准输出或错误输出，如下所示：

package demo;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;


public class ExecDemo {

    public static void main(String[] args) throws Exception {

        final Process p = Runtime.getRuntime().exec("nslookup google.com");
        Thread stdout = new Thread() {
            public void run() {
                BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
                String line = null;
                try {
                    while ((line = br.readLine())!=null) {
                        System.out.println(line);
                    }
                    br.close();
                } catch (IOException ioe) {
                    ioe.printStackTrace();
                }
            }
        };
        Thread stderr = new Thread() {
            public void run() {
                BufferedReader br = new BufferedReader(new InputStreamReader(p.getErrorStream()));
                String line = null;
                try {
                    while ((line = br.readLine())!=null) {
                        System.out.println(line);
                    }
                    br.close();
                } catch (IOException ioe) {
                    ioe.printStackTrace();
                }

            }
        };
        //
        stdout.start();
        stderr.start();
        //
        stdout.join();
        stderr.join();
        //
        p.waitFor();
    }

}

输出（在Mac OS X中）：

Server:     192.168.6.1
Address:    192.168.6.1#53

Non-authoritative answer:
Name:   google.com
Address: 74.125.31.113
Name:   google.com
Address: 74.125.31.138
Name:   google.com
Address: 74.125.31.139
Name:   google.com
Address: 74.125.31.100
Name:   google.com
Address: 74.125.31.101
Name:   google.com
Address: 74.125.31.102

通过java程序运行Windows命令

2 个答案: