java测试网络能ping通和telnet通

太过爱你忘了你带给我的痛 2023-10-06 23:39 103阅读 0赞

package com.test;
    
    import java.io.IOException;
    import java.net.InetAddress;
    import java.net.InetSocketAddress;
    import java.net.Socket;
    import java.net.SocketAddress;
    
    public class Test {
        public static void main(String[] args) {
            ping("114.114.114.114");
            //本地端口可以通过ipconfig查询
            telnet("10.xx.xx.120", "10.xx.xx.155", 22, 5000);
        }
    
        /**
         * 测试网络连通性
         * @date 2022/8/17 9:32
         */
        private static boolean ping(String ip) {
            try {
                InetAddress address = InetAddress.getByName(ip);
                // if (address instanceof java.net.Inet4Address) {
                //     System.out.println(ip + " ipv4地址");
                // } else if (address instanceof java.net.Inet6Address) {
                //     System.out.println(ip + " ipv6地址");
                // }
                if (address.isReachable(5000)) {
                    System.out.println("成功 - ping " + ip);
                    return true;
                } else {
                    System.out.println("失败 - ping " + ip);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            return false;
        }
    
        /**
         * 测试端口连通性
         * @param localHost  远程ip
         * @param remoteHost 远程ip
         * @param remotePort 远程端口
         * @param timeout    超时时间，毫秒
         * @date 2022/8/17 9:51
         */
        private static boolean telnet(String localHost, String remoteHost, int remotePort, int timeout) {
            Socket socket = null;
            try {
                InetAddress localInetAddr = InetAddress.getByName(localHost);
                InetAddress remoteInetAddr = InetAddress.getByName(remoteHost);
                socket = new Socket();
                // 端口号设置为 0 表示在本地挑选一个可用端口进行连接，这里也可以改成自己想要测试的本地端口
                SocketAddress localSocketAddr = new InetSocketAddress(localInetAddr, 0);
                socket.bind(localSocketAddr);
                InetSocketAddress endpointSocketAddr = new InetSocketAddress(remoteInetAddr, remotePort);
                socket.connect(endpointSocketAddr, timeout);
                System.out.println("成功 - telnet " + remoteHost + " " + remotePort);
                return true;
            } catch (IOException e) {
                System.out.println("失败 - telnet " + remoteHost + " " + remotePort);
                e.printStackTrace();
            } finally {
                if (socket != null) {
                    try {
                        socket.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
            return false;
        }
    }

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[Java _-CSDN_java]: https://blog.csdn.net/geekjoker/article/details/8492135