s11_6

最新推荐文章于 2025-07-05 08:53:34 发布

转载最新推荐文章于 2025-07-05 08:53:34 发布 · 902 阅读

文章标签：

#thread #socket #server #button #string #class

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package itat.s11_6;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.StringTokenizer;

public class Server {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub

  ServerSocket server=null;
  Server_thread thread;
  Socket you=null;
  while(true){
   try {
    server=new ServerSocket(4331);
    System.out.println("等待客户呼叫");
    you=server.accept();
    System.out.println("客户的地址:"+you.getInetAddress());
    if(you!=null){
     new Server_thread(you).start();
    }

   } catch (IOException e) {
    // TODO Auto-generated catch block
    System.out.println("正在监听");
   }

  }
}

}
class Server_thread extends Thread{
Socket socket;
DataOutputStream out=null;
DataInputStream in=null;
String s=null;
boolean quesion=false;

Server_thread(Socket t){
     socket=t;
        try {
   out=new DataOutputStream(socket.getOutputStream());
   in=new DataInputStream(socket.getInputStream());
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }


}
public void run(){
  while(true){
   double a[]=new double[3];
   int i=0;
   try {
    s=in.readUTF();
    quesion=false;
    StringTokenizer fenxi=new StringTokenizer(s," ,");
    while(fenxi.hasMoreTokens()){
     String temp=fenxi.nextToken();
     a[i]=Double.valueOf(temp).doubleValue();
     i++;
    }
    if(quesion==false){
     double p=(a[0]+a[1]+a[2])/2.0;
     out.writeUTF(""+Math.sqrt(p*(p-a[0])*(p-a[1])*(p-a[2])));

    }
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }

  }
}

}

package itat.s11_6;

import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.Label;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.UnknownHostException;

import javax.swing.Box;

public class Client {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub

new ComputerClient();
}

}

class ComputerClient extends Frame implements Runnable,ActionListener{

Button connection,send;
TextField inputText,showResult;
Socket socket=null;
DataInputStream in=null;
DataOutputStream out=null;
Thread thread;
ComputerClient(){
  socket =new Socket();
  this.setLayout(new FlowLayout());
  Box box=Box.createVerticalBox();
  connection=new Button("连接服务器");
  send=new Button("发送");
  send.setEnabled(false);
  inputText=new TextField(12);
  showResult=new TextField(12);
  box.add(connection);
  box.add(new Label("输入三角形的长度，用逗号或空格分隔"));
  box.add(inputText);
  box.add(send);
  box.add(new Label("收到的结果"));
  box.add(showResult);
  connection.addActionListener(this);
  send.addActionListener(this);
  thread=new Thread(this);
  add(box);
  setBounds(10,30,300,400);
  setVisible(true);
  validate();
  addWindowListener(new WindowAdapter(){
   public void windowClosing(WindowEvent e){
    System.exit(0);

   }
  });
}

public void run() {
  // TODO Auto-generated method stub
  String s=null;
  while(true){
   try {
    s=in.readUTF();
    showResult.setText(s);
   } catch (IOException e) {
    // TODO Auto-generated catch block
    showResult.setText("与服务器已断开");
    break;
   }


  }

}

public void actionPerformed(ActionEvent e) {
  if(e.getSource()==connection){
   if(socket.isConnected()){}else{
    try {
     InetAddress address=InetAddress.getByName("127.0.0.1");
     InetSocketAddress socketAddress=new InetSocketAddress(address,4331);
     socket.connect(socketAddress);
     in=new DataInputStream(socket.getInputStream());
     out=new DataOutputStream(socket.getOutputStream());
     send.setEnabled(true);
     thread.start();




    } catch (UnknownHostException e1) {
     // TODO Auto-generated catch block
     e1.printStackTrace();
    } catch (IOException e2) {
     // TODO Auto-generated catch block
     e2.printStackTrace();
    }
   }
  }
  if(e.getSource()==send){
   String s=inputText.getText();
   if(s!=null){
    try {
     out.writeUTF(s);
    } catch (IOException e1) {
     // TODO Auto-generated catch block
     e1.printStackTrace();
    }
   }
  }


}

}