java网络编程

客户端：

  1 package talktest;
  2 import java.io.*;
  3 import java.net.*;
  4 import java.awt.*;
  5 import java.awt.event.*;
  6 public class SingleTalkClient implements ActionListener
  7 {
  8     Frame f=new Frame("QQ");
  9     Button b=new Button("sending");
 10     TextArea show=new TextArea("",10,50,TextArea.SCROLLBARS_VERTICAL_ONLY);
 11     TextArea send=new TextArea("",10,50,TextArea.SCROLLBARS_VERTICAL_ONLY);
 12     String fromServer, fromUser;
 13     boolean sbye = false;
 14     boolean ubye = false;
 15     Socket client = null;
 16     PrintWriter out = null;
 17     BufferedReader in = null;
 18     String record;
 19     public void actionPerformed(ActionEvent e){
 20         if(e.getSource()==b){
 21             if(ubye==false){
 22                 fromUser=send.getText();
 23                 fromUser=fromUser.replace("Client input:","");
 24                 record=record+"from Client:"+fromUser+"\n";//将发送语句中的Client input:去掉
 25                 show.setText(record);
 26                 out.println(fromUser);
 27                 //out.flush();
 28                 if(fromUser.equals("Bye.")){
 29                     ubye=true;
 30                 }
 31             }
 32         }
 33     }
 34     public void fun()throws IOException{
 35         
 36         try {
 37             client = new Socket("127.0.0.1", 4444);
 38             out = new PrintWriter(client.getOutputStream(), true); //auto flush
 39             in = new BufferedReader(new InputStreamReader(client.getInputStream()));
 40         } catch (UnknownHostException e) {
 41             System.err.println("Don't know about host: 127.0.0.1.");
 42             System.exit(1);
 43         } catch (IOException e) {
 44             System.err.println("Couldn't get I/O for the connection to: 127.0.0.1.");
 45             System.exit(1);
 46         }
 47         
 48         f.setSize(500,500);
 49         f.add(show);
 50           f.add(send);
 51           f.add(b);
 52           f.setBackground(Color.GRAY);
 53         f.setLayout(new FlowLayout(FlowLayout.CENTER));
 54         f.addWindowListener(new WindowAdapter(){
 55             public void windowClosing(WindowEvent e){
 56                 System.exit(0);
 57             }
 58         });
 59         f.setVisible(true);
 60         b.addActionListener(this);
 61         
 62 
 63         
 64         
 65         //从标准输入流（键盘）中获取信息
 66     //BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
 67       
 68     record="";
 69     send.setText("Client input:");
 70     /*
 71     if(fromServer.equals("Bye.")){
 72         sbye=true;
 73     }
 74     record=record+"from Server:"+fromServer+"\n";
 75     show.setText(record);
 76     if(sbye){
 77         ubye=true;
 78         out.println("Bye.");
 79         out.flush();
 80     }
 81     else{
 82         send.setText("Client input:");
 83         */
 84     //System.out.print("Client input:");
 85     //fromUser = stdIn.readLine();
 86         while( true )  
 87     {
 88             //send.setText("Client input:");
 89             if( sbye == false )
 90             {
 91                 fromServer=in.readLine();
 92                 record=record+"from Server:"+fromServer+"\n";
 93                 show.setText(record);
 94                 //fromServer = in.readLine();
 95                 //System.out.println("from Server: " + fromServer);
 96                 if (fromServer.equals("Bye."))
 97                     sbye = true;
 98             }
 99         if( ubye == false )
100         {
101             //out.println(fromUser);
102             //out.flush();
103             //System.out.println("Client: " + fromUser);
104             //if (fromUser.equals("Bye."))
105             //ubye = true;
106             if(sbye==true){
107                 out.println("Bye.");
108                 out.flush();
109                 ubye=true;
110             }
111             else
112                 send.setText("Client input:");
113         }
114 
115         
116         //if( ubye == false )
117         //{
118         //    System.out.print("Client input:");
119         //    fromUser = stdIn.readLine();
120         //}
121 
122         if( ubye == true && sbye == true )
123             break;
124         }
125 
126         out.close();
127         in.close();
128         //stdIn.close();
129         client.close();
130     }
131     public static void main(String[] args) throws IOException
132     {
133         new SingleTalkClient().fun();
134         
135     }
136 }

服务器端：

  1 package talktest;
  2 import java.net.*;
  3 import java.io.*;
  4 import java.awt.*;
  5 import java.awt.event.*;
  6 public class SingleTalkServer implements ActionListener
  7 {
  8 
  9     Frame f=new Frame("QQ");
 10     Button b=new Button("sending");
 11     TextArea show=new TextArea("",10,50,TextArea.SCROLLBARS_VERTICAL_ONLY);
 12     TextArea send=new TextArea("",10,50,TextArea.SCROLLBARS_VERTICAL_ONLY);
 13     //String fromServer, fromUser;
 14     //boolean sbye = false;
 15     //boolean ubye = false;
 16     boolean  sinbye = false;
 17     boolean  inbye = false;
 18     String sinputLine, inputLine;
 19     ServerSocket serverSocket = null;
 20     Socket clientSocket = null;
 21     PrintWriter out = null;
 22     BufferedReader in = null;
 23     String record;
 24     public void actionPerformed(ActionEvent e){
 25         if(e.getSource()==b){
 26             if(sinbye==false){
 27                 sinputLine=send.getText();            
 28                 sinputLine=sinputLine.replace("Server input:","");
 29                 record=record+"from Server:"+sinputLine+"\n";//将发送语句中的Client input:去掉
 30                 show.setText(record);
 31                 out.println(sinputLine);
 32                 //out.flush();
 33                 if(sinputLine.equals("Bye.")){
 34                     sinbye=true;
 35                 }
 36             }
 37         }
 38     }
 39     public void fun()throws IOException{
 40         
 41         try {
 42             serverSocket = new ServerSocket(4444);
 43         } catch (IOException e) {
 44             System.err.println("Could not listen on port: 4444.");
 45             System.exit(1);
 46         }
 47 
 48         
 49         try {
 50             clientSocket = serverSocket.accept();  //程序将在此等候客户端的连接
 51         } catch (IOException e) {
 52             System.err.println("Accept failed.");
 53             System.exit(1);
 54         }
 55         show.setText("Accept OK!"+"\n");
 56 
 57         //打开输入/输出流
 58         out = new PrintWriter(clientSocket.getOutputStream(), true);  //auto flush
 59         in = new BufferedReader(
 60                 new InputStreamReader(
 61                 clientSocket.getInputStream()));
 62         
 63         f.setSize(500,500);
 64         f.add(show);
 65           f.add(send);
 66           f.add(b);
 67           f.setBackground(Color.GRAY);
 68         f.setLayout(new FlowLayout(FlowLayout.CENTER));
 69         f.addWindowListener(new WindowAdapter(){
 70             public void windowClosing(WindowEvent e){
 71                 System.exit(0);
 72             }
 73         });
 74         f.setVisible(true);
 75         b.addActionListener(this);
 76         
 77         
 78 
 79     //从标准输入流（键盘）中获取信息
 80         //BufferedReader sin = new BufferedReader( new InputStreamReader( System.in ) );
 81 
 82     
 83         record="";
 84         //send.setText("Server input:");
 85         inputLine = in.readLine();
 86         //System.out.println( "from Client: " + inputLine );
 87         if(inputLine.equals("Bye.")){
 88             inbye=true;
 89         }
 90         record=record+"from Client:"+inputLine+"\n";
 91         show.setText(record);
 92         if(inbye){
 93             sinbye=true;
 94             out.println("Bye.");
 95             out.flush();
 96         }
 97         else{
 98             send.setText("Server input:");
 99         }
100         //System.out.print("Server input:");
101         //sinputLine = sin.readLine();
102 
103         while( true )
104         {
105             //send.setText("Server input:");
106             if( inbye == false )
107             {
108                 inputLine = in.readLine();
109                 //System.out.println( "from Client: " + inputLine );
110                 record=record+"from Client:"+inputLine+"\n";
111                 show.setText(record);
112                 if (inputLine.equals("Bye."))
113                     inbye = true;
114             }
115             if( sinbye == false )
116             {
117             //out.println(sinputLine);
118             //out.flush();
119             //System.out.println("Server: " + sinputLine);
120 
121             //if (sinputLine.equals("Bye."))
122                 //sinbye = true;
123                 if(inbye==true){
124                     out.println("Bye.");
125                     out.flush();
126                     sinbye=true;
127                 }
128                 else
129                     send.setText("Server input:");
130             }
131         //if( sinbye == false )
132         //{
133             //System.out.print("Server input:");
134             //sinputLine = sin.readLine();
135         //}
136 
137             if( sinbye == true && inbye == true )
138                 break;
139         }
140 
141         out.close();
142         in.close();
143         //sin.close();
144         clientSocket.close();
145         serverSocket.close();
146     }
147     public static void main(String[] args) throws IOException
148     {
149         new SingleTalkServer().fun();
150     }
151 }

 

posted @ 2017-03-19 21:05  奇热行  阅读(133)  评论(0)    收藏  举报