参考 - p481、p484

与我对接的业务层使用的是JAVA语言,因此花点时间入门java.下面几篇博客可能都是关于java的,我觉得在工作中可能会遇到的

简单的通信

• DailyAdviceClient(客户端程序)

import java.io.*;
import java.net.*;public class DailyAdviceClient{public void go(){try{Socket s = new Socket("127.0.0.1", 4242);InputStreamReader streamReader = new InputStreamReader(s.getInputStream());BufferedReader reader = new BufferedReader(streamReader);String advice = reader.readLine();System.out.println("Today you should: " + advice);reader.close();} catch(IOException ex) {ex.printStackTrace();}}public static void main(String[] args) {DailyAdviceClient client = new DailyAdviceClient();client.go();}
}

• DailyAdviceServer(服务器端的程序)

import java.io.*;
import java.net.*;public class DailyAdviceServer {String[] adviceList = {"Take smaller bites", "Go for the tight jeans. No they do NOT make you look fat.", "One word: inappropriate", "Just for today, be honest. Tell your boss what you *really* think", "You might want to rethink thath haircut."};public void go(){try {ServerSocket serverSock = new ServerSocket(4242);while(true) {Socket sock = serverSock.accept();PrintWriter writer = new PrintWriter(sock.getOutputStream());String advice = getAdvice();writer.println(advice);writer.close();System.out.println(advice);}} catch (IOException ex) {ex.printStackTrace();}}private String getAdvice() {int random  = (int) (Math.random() * adviceList.length);return adviceList[random];}public static void main(String[] args) {DailyAdviceServer server = new DailyAdviceServer();server.go();}
}

• 先运行服务器端代码,后运行客户端代码