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1.7 TCP文件上传实现 package web; import java.io.*; import java.net.ServerSocket; import java.net.Socket; import java.util.Scanner; public class testServerDemo02 { public static void main(String[] args) throws IOException { //1、创建服务 ServerSo

1.1 什么是计算机网络 1.2 网络通信的两个要素 1.3 IP地址 package web; import java.net.InetAddress; import java.net.UnknownHostException; public class testInetAddress { public static void main(String[] args) { try { //查询本机地址 InetAddress