网络程序设计(java)第10章 网络通信.pptVIP

注意和我们打开的几乎所有数据流一样，它们都要进行缓冲处理。无限while 循环从BufferedReader in 内读取文本行，并将信息写入System.out，然后写入PrintWriter.out。注意这可以是任何数据流，它们只是在表面上同网络连接。客户程序发出包含了END的行后，程序会中止循环，并关闭Socket。 【例10-4】Socket通信程序 // Server_Socket.java import java.io.*; import .*; public class Server_Socket { public static final int PORT = 8080; public static void main(String[] args) throws IOException { ServerSocket s = new ServerSocket(PORT); System.out.println(Started: + s); try { Socket socket = s.accept(); try { System.out.println(Connection accepted: + socket); BufferedReader in = new BufferedReader( new InputStreamReader(socket.getInputStream())); PrintWriter out = new PrintWriter(new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())), true); while (true) { String str = in.readLine(); if (str.equals(END)) break; System.out.println(Echoing: + str); out.println(str + str + haha); }} finally { System.out.println(closing...); socket.close();}} finally {s.close();}} } 10.3 Socket通信 10.3.1服务器程序 10.3.2 客户机程序 10.3.3 服务多个客户 10.3.4 数据报通信 例10-4客户程序的源码 import .*; import java.io.*; public class client_socket { public static void main(String[] args)throws IOException { InetAddress addr =InetAddress.getByName(null); System.out.println(addr = + addr); Socket socket = new Socket(addr, server_socket.PORT); try { 10.3.2 客户机程序 System.out.println(socket = + socket); BufferedReader in =new BufferedReader( new InputStreamReader(socket.getInputStream())); PrintWriter out =new PrintWriter(new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())),true); for(int i = 0; i 10; i ++) { out.println(www + i); String str = in.readLine(); System.out.println(str); 10.3.2 客户机程序 } out.println(END); } finally { System.out.pr