网络编程模型「建议收藏」

 1 import java.io.PrintStream;
 2 import java.net.ServerSocket;
 3 import java.net.Socket;
 4 import java.util.Scanner;
 5 
 6 public class EchoSrever {
 7     private static class MyThread implements Runnable{
 8         private Socket client;
 9         public MyThread(Socket client){
10             this.client=client;
11         }
12         @Override
13         public void run() {
14             try{
15             Scanner scan = new Scanner(client.getInputStream());
16             scan.useDelimiter("\n");
17             PrintStream out = new PrintStream(client.getOutputStream());
18             boolean flag = true;
19             while (flag) {
20                 if (scan.hasNext()) {
21                     String str = scan.next().trim();
22                     if ("byebye".equalsIgnoreCase(str)) {
23                         out.println("BYEBYE!!!");
24                         flag = false;
25                         break;
26                     }
27                     out.println("Echo:" + str);
28                 }
29             }
30             out.close();
31             scan.close();
32             }catch(Exception e){
33                 
34             }
35         }
36         
37     }
38     public static void main(String[] args) throws Exception {
39         ServerSocket server = new ServerSocket(8888);
40     boolean flag = true;
41         while (flag) {
42             Socket client = server.accept();
43             new Thread(new MyThread(client)).start();
44         }
45         server.close();
46     }
47 }

 1 import java.io.IOException;
 2 import java.io.PrintStream;
 3 import java.net.Socket;
 4 import java.util.Scanner;
 5 
 6 public class EchoSocket {
 7     public static void main(String[] args) throws Exception, IOException {
 8         Socket client = new Socket("localhost",8888);
 9         Scanner keyScan = new Scanner (System.in);
10         keyScan.useDelimiter("\n");
11         Scanner netScan = new Scanner (client.getInputStream());
12         netScan.useDelimiter("\n");
13         PrintStream out = new PrintStream(client.getOutputStream());
14         boolean flag = true;
15         while(flag){
16             System.out.println("输入要发送的内容：");
17             String str =null;
18             if(keyScan.hasNext()){
19                 str = keyScan.next().trim();
20                 out.println(str);
21                 if (netScan.hasNext()) {
22                     System.out.println(netScan.next());
23                 }
24             }
25             if("byebye".equalsIgnoreCase(str)){
26                 flag=false;
27             }
28         }
29         out.close();
30         netScan.close();
31         keyScan.close();
32     }
33 }