网络编程-第三节

服务器单独显示客户信息

在上星期实验4.3的基础上，修改服务端程序，使得服务器在接受到客户连接后弹出如下所示对话框，并将所有客户端发回的信息显示在这个对话框里。

 

代码：

EchoClient.java

package cn.edu.sise;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.nio.charset.Charset;

public class EchoClient {

    public static void main(String[] args) {
        Socket clientSocket = null;
        BufferedReader in = null;
        BufferedWriter out = null;
        try {
            //1.创建客户机套接字
            clientSocket = new Socket();
            SocketAddress remoteAddr=new InetSocketAddress("172.16.28.19",5000); 
            System.out.println("1.创建客户机套接字成功！");
            //2.连接服务器
            clientSocket.connect(remoteAddr);
            System.out.println("2.客户机连接服务器localhost端口5000成功！");
            System.out.println("客户机使用的地址和端口："+clientSocket.getLocalSocketAddress());
            //与服务器会话           
            in = new BufferedReader(
                 new InputStreamReader(
                 clientSocket.getInputStream()));           
            out = new BufferedWriter(
                  new OutputStreamWriter(            
                  clientSocket.getOutputStream()));
           
            BufferedReader localIn = new BufferedReader(
                    new InputStreamReader(
                    System.in));
                   
            String sendStr=localIn.readLine();
            out.write(sendStr);  //向服务器发送字符串
            out.newLine();
            out.flush();
            System.out.println("3.1向服务器发送字符串成功!"+sendStr);
            String recvStr=in.readLine();  //从服务器接收字符串 
            System.out.println("3.2从服务器接收回送字符串成功！"+recvStr);
        } catch (IOException ex) {
            System.out.println("异常信息："+ex.getMessage());
        }
        //关闭套接字和流
        try {
            if (in != null) in.close();
            if (out != null)  out.close();
            if (clientSocket != null)   clientSocket.close(); 
            System.out.println("4.关闭套接字和流成功！");
        } catch (IOException ex) {
             System.out.println("异常信息："+ex.getMessage());
        } 
    }
}

EchoServer.java

package cn.edu.sise;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketAddress;
import java.nio.charset.Charset;

public class EchoServer {

    public static void main(String[] args) {
        //1.启动服务器
        ServerSocket listenSocket = null; 
        Socket clientSocket = null; 
        BufferedReader in = null;
        BufferedWriter out = null;
        try {
            listenSocket = new ServerSocket();
            SocketAddress serverAddr=new InetSocketAddress(InetAddress.getByName("172.16.28.19"),5000);
            listenSocket.bind(serverAddr); 
            System.out.println("1.服务器启动成功！开始在localhost的5000端口侦听连接...");
            //2.处理连接                      
            clientSocket = listenSocket.accept();
            System.out.println("2.客户机连接成功！客户机地址和端口："+clientSocket.getRemoteSocketAddress());
            //3.与客户机会话           
            in = new BufferedReader(
                 new InputStreamReader(
                 clientSocket.getInputStream()));           
            out = new BufferedWriter(
                  new OutputStreamWriter(            
                  clientSocket.getOutputStream()));
           
            String recvStr=in.readLine();  //从客户机接收字符串
            System.out.println("3.1 服务器收到字符串："+recvStr);
            out.write(recvStr);  //向客户机回送字符串           
            out.newLine();
            out.flush(); 
            System.out.println("3.2 服务器回送字符串成功："+recvStr);
        } catch (IOException ex) {
            System.out.println("异常信息："+ex.getMessage());
        }
        //4.关闭套接字和流
        try {  
            if (in != null)in.close();
            if (out != null)  out.close();
            if (listenSocket != null)   listenSocket.close();
            if (clientSocket != null)   clientSocket.close(); 
            System.out.println("4.关闭套接字和流成功！");
        } catch (IOException ex) {
           System.out.println("异常信息"+ex.getMessage());
        }
    }
}

TestBuffered.java

package cn.edu.sise;

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;


public class TestBuffered {

    public static void main(String[] args) throws IOException {
        // TODO Auto-generated method stub
        //InputStream fis = new FileInputStream("file");//������52�룩
        InputStream fis =new BufferedInputStream( new FileInputStream("file"));//������1�룩
        System.out.println(new Date() + ": ���Կ�ʼ...");
            while (fis.read()!=-1)
            {
                //��ȡ�����ļ�������
            }
            System.out.println(new Date() + ": ���Խ���");
        fis.close();

    }

}

TestInputStream.java

package cn.edu.sise;

import java.io.BufferedInputStream;
import java.io.IOException;

public class TestInputStream {

    public static void main(String[] args) throws IOException {
        // TODO Auto-generated method stub
        BufferedInputStream bis = new BufferedInputStream(System.in);
        int data = bis.read();
        while (data!=-1){
        System.out.println(data + " " + (char)data);
        if(data==13) break;
        data = bis.read();
        }
        bis.close();

    }

}

TestReader.java

package cn.edu.sise;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class TestReader {

    public static void main(String[] args) throws IOException {
        // TODO Auto-generated method stub
        BufferedReader bis = new BufferedReader(new InputStreamReader(System.in));
        int data = bis.read();
        while (data!=-1){
        System.out.println(data + " " + (char)data);
        if(data==13) break;
        data = bis.read();
        }
        bis.close();

    }

}