网络编程练习题(TCP)

基础练习

package test1;import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;public class Server {public static void main(String[] args) throws IOException {ServerSocket ss = new ServerSocket(10086);Socket socket = ss.accept();InputStream is = socket.getInputStream();InputStreamReader isr = new InputStreamReader(is);int b;while((b = isr.read()) != -1){System.out.println((char)b);}socket.close();}
}

package test1;import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;
import java.util.Scanner;public class Client {public static void main(String[] args) throws IOException {//接收数据Socket socket = new Socket("127.0.0.1",10086);OutputStream os = socket.getOutputStream();Scanner sc = new Scanner(System.in);//写出数据while(true){System.out.println("请输入对话信息：");String str = sc.nextLine();if("886".equals(str)){break;}os.write(str.getBytes());}//释放资源socket.close();}
}

接收和反馈

客户端：发送一条数据，接收服务端反馈的消息并打印

服务端：接受数据并打印，再给客户端返回消息

package test1;import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;public class Server {public static void main(String[] args) throws IOException {//绑定监听端口ServerSocket ss = new ServerSocket(10086);//等待连接Socket socket = ss.accept();InputStream is = socket.getInputStream();InputStreamReader isr = new InputStreamReader(is);int b;while((b = isr.read()) != -1){System.out.println((char)b);}//反馈信息OutputStream os = socket.getOutputStream();os.write("我已收到信息~".getBytes());socket.close();}
}

package test1;import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.Socket;
import java.util.Scanner;public class Client {public static void main(String[] args) throws IOException {//接受数据Socket socket = new Socket("127.0.0.1",10086);OutputStream os = socket.getOutputStream();Scanner sc = new Scanner(System.in);//写出数据String str = "你好大美中国！！！！";os.write(str.getBytes());//写出一个结束标记socket.shutdownOutput();//关闭通道，使之可以接收到反馈信息InputStream is = socket.getInputStream();InputStreamReader isr = new InputStreamReader(is);int b;while((b = isr.read()) != -1){System.out.println((char)b);}//释放资源socket.close();}
}

上传文件

客户端：负责将本地文件上传到服务器，并接受反馈信息

服务端：接受客户端上传的文件，上传完毕后给出反馈

package test1;import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;public class Server {public static void main(String[] args) throws IOException {ServerSocket ss = new ServerSocket(10000);Socket socket = ss.accept();BufferedInputStream bis = new BufferedInputStream(socket.getInputStream());BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("E:\\code\\java\\temp\\Thread\\Thread01\\Thread02\\ServerFile"));int len ;byte[] bytes = new byte[1024];while((len = bis.read(bytes)) != -1){bos.write(bytes,0,len);}BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));bw.write("上传成功");bw.newLine();bw.flush();socket.close();ss.close();}
}

package test1;import java.io.*;
import java.net.Socket;
import java.util.Scanner;public class Client {public static void main(String[] args) throws IOException {Socket socket = new Socket("127.0.0.1",10000);//从本地文件中读取数据，并上传到服务器BufferedInputStream bis = new BufferedInputStream(new FileInputStream("E:\\code\\java\\temp\\Thread\\Thread01\\Thread02\\clientFile\\photo.jpg"));BufferedOutputStream bos = new BufferedOutputStream(socket.getOutputStream());byte [] bytes = new byte[1024];int len;while((len = bis.read(bytes)) != -1){bos.write(bytes,0,len);}//写出结束标志socket.shutdownOutput();//接受服务器的回显信息BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));String line = br.readLine();System.out.println(line);//释放资源socket.close();}
}