Java-端口

在这里插入图片描述

windows 查看端口

netstat -ano   # 查看所有端口
netstat -ano | findstr "8080"   # 查看含有8080的行，查看指定端口
tasklist | findstr "20100"  # 查看指定端口的进程
Ctrl + Shift + Esc # 打开任务管理器

public class TestInetSocketAddress {public static void main(String[] args) {InetSocketAddress inetSocketAddress = new InetSocketAddress("127.0.0.1", 8080);InetSocketAddress inetSocketAddress1 = new InetSocketAddress("localhost", 8080);System.out.println(inetSocketAddress);System.out.println(inetSocketAddress1);System.out.println(inetSocketAddress.getAddress());System.out.println(inetSocketAddress.getHostName());  // 地址 C:\Windows\System32\drivers\etc\hosts  中配置System.out.println(inetSocketAddress.getPort()); // 端口}
}

ip

// 测试ip
public class TestInetAddress {public static void main(String[] args) {try {// 查询本机地址InetAddress inetAddress1 = InetAddress.getByName("127.0.0.1");System.out.println(inetAddress1);InetAddress inetAddress3 = InetAddress.getByName("localhost");System.out.println(inetAddress3);InetAddress inetAddress4 = InetAddress.getLocalHost();System.out.println(inetAddress4);// 查询网站ip地址InetAddress inetAddress2 = InetAddress.getByName("www.baidu.com");System.out.println(inetAddress2);// 常用方法System.out.println(inetAddress2.getCanonicalHostName()); // 规范的名字14.215.177.38System.out.println(inetAddress2.getHostAddress());  // ip 14.215.177.38System.out.println(inetAddress2.getHostName()); // 域名，或者自己电脑名字  www.baidu.com} catch (UnknownHostException e) {e.printStackTrace();}}
}