連接建立過程：Server端服務(wù)器監(jiān)聽端口的連接請求，Client端向Server服務(wù)端發(fā)出連接請求，Server服務(wù)端調(diào)用accep（）函數(shù)發(fā)回接受請求消息。
步驟有：
1.創(chuàng)建Socket對象；
2.打開輸入輸出流，用于接收網(wǎng)絡(luò)端口的消息；
3.進(jìn)行讀寫操作；

• 客戶端Client的程序?qū)崿F(xiàn)：
  import java.io.BufferedReader;
  import java.io.BufferedWriter;
  import java.io.IOException;
  import java.io.InputStreamReader;
  import java.io.OutputStreamWriter;
  import java.net.Socket;
  import java.util.Scanner;

   public class Client {
      public static final int port = 3001;
  
      public static void main(String[] args) {
          try {
              Socket s = new Socket("192.168.0.102", port);
  \\try catch用來在連接建立不成功時產(chǎn)生異常；
  \\192.168.0.102為服務(wù)器ip地址；端口號port從0到1023為系統(tǒng)保留，因此最好用1023以上的
              System.out.println("服務(wù)連接成功.........");
   \\若連接過久，重新運行程序時會運行出錯。
        BufferedReader input = new BufferedReader(new     InputStreamReader(s.getInputStream()));
    \\getInputStream()只接收字節(jié)，而InputStreamReader()使之變?yōu)樽址?，BufferedReaderI()使之變?yōu)樽址?      BufferedWriter output = new BufferedWriter(new        OutputStreamWriter(s.getOutputStream()));
        Scanner scan = new Scanner(System.in);
        String clientMsg;
        String serverMsg;
        clientMsg = scan.nextLine();
        
        while (!clientMsg.startsWith("bye") ) {
               output.write("client say" + clientMsg + "\r\n");
   \\ 這里的\r\n為換行符，因為readLine()要讀到換行符才產(chǎn)生作用。
            output.flush();
            serverMsg=input.readLine();
            System.out.println(serverMsg);
            clientMsg = scan.nextLine();
        }
        s.close();
        scan.close();
        input.close();
        output.close();
  
    } catch (IOException e) {
  
        e.printStackTrace();
    }
  }
  
  }
  

• 服務(wù)端程序?qū)崿F(xiàn)：
  import java.io.BufferedReader;
  import java.io.BufferedWriter;
  import java.io.IOException;
  import java.io.InputStreamReader;
  import java.io.OutputStreamWriter;
  import java.net.ServerSocket;
  import java.net.Socket;
  import java.util.Scanner;

  public class Server {
    public static final int port=3002;
    public static void main(String[] args) {
    try {
        ServerSocket s = new ServerSocket(port);
        System.out.println("服務(wù)器已啟動.........");
        Socket socket;
        socket = s.accept();
        System.out.println("已建立連接");
    BufferedReader input = new BufferedReader(new InputStreamReader(socket.getInputStream()));
    BufferedWriter output = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
  
    String serverMsg;
    String clientMsg;
    Scanner scan = new Scanner(System.in);
    clientMsg = input.readLine();
    while(!clientMsg.startsWith("bye")){
        System.out.println(clientMsg);
        serverMsg = scan.nextLine();
        output.write("server say"+serverMsg+"\r\n");
        output.flush();
        clientMsg = input.readLine();
    }
    System.out.println("關(guān)閉連接....");
    s.close();
    scan.close();
    socket.close();
  }
    catch (IOException e) {
        
        e.printStackTrace();
    }
   }
  }
  

  這是單個端口的socket編程，而若要進(jìn)行多個客戶端的socket編程則要用到多線程的知識，在此不贅述。
  要問我代碼為什么寫得這么屌？戳下面的鏈接你就知道，想成為碼王一樣的男人嗎？我的代碼都放在那了，想要嗎？還等什么？趕快去拿吧??！

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