java 中如何實(shí)現(xiàn)模擬TCP協(xié)議進(jìn)行傳輸數(shù)據(jù)

import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;

public class Client {
  public static void main(String[] args) throws IOException {

    // 1、創(chuàng)建客戶端的Socket服務(wù)
    Socket socket = new Socket("192.168.1.100", 10002);

    // 2、獲取Socket流中輸入流
    OutputStream out = socket.getOutputStream();

    // 3、使用輸出流將指定的數(shù)據(jù)寫出去
    out.write("TCP is coming !".getBytes());

    // 4、關(guān)閉Socket服務(wù)
    socket.close();
  }
}

import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class Server {
  public static void main(String[] args) throws IOException {

    // 1、創(chuàng)建客戶端對象
    ServerSocket ss = new ServerSocket(10002);

    // 2、獲取連接過來的客戶端對象
    Socket s = ss.accept();

    String ip = s.getInetAddress().getHostAddress();

    // 3、通過Socket對象獲取輸入流，讀取客戶端發(fā)來的數(shù)據(jù)
    InputStream in = s.getInputStream();

    byte[] buf = new byte[1024];

    int len = in.read(buf);
    String text = new String(buf, 0, len);
    System.out.println(ip + ":" + text);

  // 4、關(guān)閉資源
    s.close();
    ss.close();
  }
}

/**
*優(yōu)化TCP傳輸?shù)目蛻舳?
*/
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;

public class ClientUpdate {
  public static void main(String[] args) throws IOException {

    Socket socket = new Socket("192.168.1.100", 10002);

    OutputStream out = socket.getOutputStream();

    out.write("tcp!".getBytes());

    // 讀取服務(wù)端返回的數(shù)據(jù)，使用Socket讀取流
    InputStream in = socket.getInputStream();
    byte[] buf = new byte[1024];

    int len = in.read(buf);

    String text = new String(buf, 0, len);

    System.out.println(text);

    socket.close();
  }
}

/**
*優(yōu)化TCP傳輸?shù)姆?wù)端
*/
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class ServerUpdate {
  public static void main(String[] args) throws IOException {

    // 1、創(chuàng)建服務(wù)端對象
    ServerSocket ss = new ServerSocket(10002);

    // 2、獲取連接過來的客戶端對象
    Socket s = ss.accept(); //accept方式為阻塞式方法

    String ip = s.getInetAddress().getHostAddress();

    // 3、通過Socket對象獲取輸入流，要讀取客戶端發(fā)來的數(shù)據(jù)
    InputStream in = s.getInputStream();

    byte[] buf = new byte[1024];

    int len = in.read(buf);
    String text = new String(buf, 0, len);
    System.out.println(ip + ":" + text);

    // 使用客戶端的Socket對象的輸出流給客戶端返回數(shù)據(jù)
    OutputStream out = s.getOutputStream();
    out.write("收到".getBytes());

    s.close();
    ss.close();
  }
}

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;

public class TransClient {
  public static void main(String[] args) throws IOException {
    /**
     * 思路：創(chuàng)建客戶端
     * 1、創(chuàng)建Socket客戶端對象
     * 2、獲取鍵盤錄入的數(shù)據(jù)
     * 3、將錄入的信息發(fā)送給Socket輸出流
     * 4、讀取服務(wù)端的數(shù)據(jù)并返回的大寫數(shù)據(jù)
     */

    // 1、創(chuàng)建Socket客戶端對象
    Socket s = new Socket("192.168.1.100", 10004);

    // 2、獲取鍵盤錄入
    BufferedReader bufr = new BufferedReader(new InputStreamReader(System.in));

    // 3、Socket輸出流
    PrintWriter out = new PrintWriter(s.getOutputStream(), true);

    // 4、Socket輸入流，讀取服務(wù)端的數(shù)據(jù)并返回的大寫數(shù)據(jù)
    BufferedReader bufIn = new BufferedReader(new InputStreamReader(s.getInputStream()));

    String line = null;

    while ((line = bufr.readLine()) != null) {

      if ("over".equals(line))
        break;
      out.println(line);

      // 讀取服務(wù)端返回的一行大寫數(shù)據(jù)
      String upperStr = bufIn.readLine();
      System.out.println(upperStr);
    }
    s.close();
  }
}

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;

public class TransServer {
  public static void main(String[] args) throws IOException {
    /**
     * 思路：創(chuàng)建服務(wù)端
     * 1、創(chuàng)建SeverSocket客戶端對象
     * 2、獲取Socket流
     * 3、通過Socket， 讀取客戶端發(fā)過來的需要轉(zhuǎn)換的數(shù)據(jù)
     * 4、顯示在控制臺上
     * 5、將數(shù)據(jù)轉(zhuǎn)換成大寫返回給客戶端
     */

    // 1、創(chuàng)建SeverSocket對象
    ServerSocket ss = new ServerSocket(10004);

    // 2、獲取Socket對象
    Socket s = ss.accept();

    // 獲取IP地址
    String ip = s.getInetAddress().getHostAddress();
    System.out.println(ip + "......connected");

    // 3、獲取Socket讀取流，并裝飾
    BufferedReader bufIn = new BufferedReader(new InputStreamReader(s.getInputStream()));

    // 4、獲取Socket的輸出流，并裝飾
    PrintWriter out = new PrintWriter(s.getOutputStream(), true);

    String line = null;
    while ((line = bufIn.readLine()) != null) {
      System.out.println(line);
      out.println(line.toUpperCase());
    }

    s.close();
    ss.close();
  }
}