客户咨询问题

 1 package demo13;
 2 
 3 import java.io.IOException;
 4 import java.net.DatagramPacket;
 5 import java.net.DatagramSocket;
 6 import java.net.InetAddress;
 7 import java.net.SocketAddress;
 8 import java.net.SocketException;
 9 import java.net.UnknownHostException;
10 import java.util.Scanner;
11 
12 import javax.sound.midi.MidiDevice.Info;
13 
14 /**
15  * 实现客户咨询问题，客服人员回答问题
16  * @author BCh_Chen
17  *
18  */
19 //基于UDP的Socket通信，客户端
20 public class LoginClient {
21     
22     
23     public static void main(String[] args) {
24         Scanner input=new Scanner(System.in);
25         System.out.println("客户端启动成功！");
26         String info="";
27         
28         do {
29             //买礼物
30             System.out.print("请输入内容：");
31             info=input.next();
32             //把字符串打散成为字节数组
33             byte[] infos=info.getBytes();
34             //对方地址和邮编（端口号）
35             InetAddress ia;
36             //快递点
37             DatagramSocket socket=null;
38             
39             try {
40                 ia=InetAddress.getByName("localhost");
41                 //包裹包装礼物
42                 DatagramPacket dp=new DatagramPacket(infos,infos.length, ia,5000);
43                 socket =new DatagramSocket();
44                 //通过快递点往外寄出礼物
45                 socket.send(dp);
46                 
47                 //接收服务器的响应
48                 //准备一个空包
49                 byte[] replys=new byte[1024];
50                 DatagramPacket dp1=new DatagramPacket(replys,0,replys.length);
51                 //在快递点取礼物
52                 socket.receive(dp1);
53                 //拆礼物
54                 String reply=new String(dp1.getData(),0,dp1.getLength());
55                 System.out.println("客服回复："+reply);
56                 
57             } catch (UnknownHostException e) {
58                 e.printStackTrace();
59             } catch (SocketException e) {
60                 e.printStackTrace();
61             } catch (IOException e) {
62                 e.printStackTrace();
63             }finally {
64                 socket.close();
65             }
66             
67             if(info.equals("88")) {
68                 break;
69             }
70         }while(true);
71         
72     }
73     
74 }

 1 package demo13;
 2 
 3 import java.io.IOException;
 4 import java.net.DatagramPacket;
 5 import java.net.DatagramSocket;
 6 import java.net.InetAddress;
 7 import java.net.SocketAddress;
 8 import java.net.SocketException;
 9 import java.util.Scanner;
10 
11 /**
12  * 实现客户咨询问题，客服人员回答问题
13  * @author BCh_Chen
14  *
15  */
16 //服务器
17 public class LoginServer {
18     public static void main(String[] args) {
19         Scanner input =new Scanner(System.in);
20         System.out.println("客服端启动成功！");
21         String reply="";
22         do {
23             //准备一个空包
24             byte[] infos=new byte[1024];
25             DatagramPacket dp=new DatagramPacket(infos,infos.length);
26             //快递点
27             DatagramSocket socket=null;
28             
29             try {
30                 
31                 socket=new DatagramSocket(5000);
32                 //在快递点取礼物
33                 socket.receive(dp);
34                 //拆礼物
35                 String info=new String(dp.getData(),0,dp.getLength());
36                 System.out.println("客户回复："+info);
37                 
38                 if(info!=null) {
39                     //给客户端一个响应
40                     System.out.print("请输入内容：");
41                     reply=input.next();
42                     byte[] replys=reply.getBytes();
43                     //客户端的地址
44                     SocketAddress sa=dp.getSocketAddress();
45                     //打一个包裹
46                     DatagramPacket dp1=new DatagramPacket(replys,0,replys.length,sa);
47                     //寄出去
48                     socket.send(dp1);
49                 }
50             
51             } catch (SocketException e) {
52                 e.printStackTrace();
53             } catch (IOException e) {
54                 e.printStackTrace();
55             }finally {
56                 socket.close();
57             }
58             
59             if(reply.equals("再见")) {
60                 break;
61             }
62         }while(true);
63         
64     }
65     
66 }

咨询问题时一般用基于UDP协议的socket编程，这时不分服务器和客户端，启动顺序没有要求。

posted on 2019-01-02 14:50 从零开始-白阅读(220) 评论(0) 收藏举报