Java中的KnockKnockServer

2 回答

• 0

  编辑：这是解决方案，我检查了它，对我来说它工作（运行MainClass.java文件！）：// MainClass.java文件：

  public class MainClass {
      public static void main (String[] args) {
      Server s=new Server();
      s.runningserver();
      } 
  }
  

  //Server.java文件：

  import java.io.IOException;
  
  import java.io.ObjectInputStream;
  
  import java.io.ObjectOutputStream;
  import java.net.ServerSocket;
  import java.net.Socket;
  
  public class Server {
  
      private ObjectOutputStream output;
      private ObjectInputStream input;
      private ServerSocket server;
      private Socket connection;
  
      // wait For Connection,then display connection information
      private void waitforConnection() {
          System.out.println("wait for Someone to Connect.....\n");
          try {
              connection = server.accept();
          } catch (IOException e) {
              // TODO Auto-generated catch block
              e.printStackTrace();
              System.out.println("error In Acceptance of Server!!\n...");
          }
          System.out.println(("Connection      Established" + connection
                  .getInetAddress().getHostName()));
  
      }
  
      // Setting Up Streams to Get Input and Output
  
      private void setupStreams() {
          try {
              output = new ObjectOutputStream(connection.getOutputStream());
              output.flush();
              input = new ObjectInputStream(connection.getInputStream());
              System.out.println("Your Streams are Perfectly Working...");
  
          } catch (IOException e) {
              // TODO Auto-generated catch block
  
              System.err.println("Error Found! in Streaming Connectionos");
              e.printStackTrace();
          }
      }
  
      // While Chatting Method....!!//
      private void whileChatting() throws IOException {
          String Message = "You are now Connected!!\n";
          sendMessage(Message);
  
          // abletoType(true);
          do {
              try {
                  Message = (String) input.readObject();
                  System.out.println("\n" + Message);
              } catch (ClassNotFoundException e) {
                  System.out.println("wtf---Fuck\n YOu\n Bloody\n HAcker!!!\n");
              }
  
          } while (!Message.equals("CLIENT--END"));
  
      }
  
      // Closing All Streams and Socket after you are done//
      private void closeCrap() {
          System.out.println("\nClosing Connection...........Bye Bye\n");
          // abletoType(false);
          try {
              output.close();
              input.close();
              connection.close();
          } catch (IOException e) {
              // TODO Auto-generated catch block
              e.printStackTrace();
              System.out.println("Couldn't Close Connections!");
          }
  
      }
  
      // Sending Messages to Client
      private void sendMessage(String message) {
          try {
  
              output.writeObject("SERVER--- " + message);
  
              output.flush();
              System.out.println("\nServer- " + message);
  
          } catch (IOException e) {
              // TODO Auto-generated catch block
  
              e.printStackTrace();
              System.out.println("Dude I cant Send yeaah..");
          }
  
      }
  
      // Setting up the Server
  
      public void runningserver() {
          try {
              server = new ServerSocket(4444, 100);
              while (true) {
                  try {
                      // connect and Have connection
                      waitforConnection();
                      setupStreams();
                      whileChatting();
                  } finally {
                      closeCrap();
                  }
              }
          } catch (IOException e) {
              // TODO Auto-generated catch block
              e.printStackTrace();
          }
  
      }
  
  }
  

  我可以毫无例外地运行它 .

  问题是你的主要方法

  public static void main (String[] args) {}
  

  不在您运行它的类中 .

  //separate file A.java
  public class A
  {}
  
  //separate file B.java
  public class B
  {
      public static void main (String[] args) {}
  
  }
  

  如果你现在运行B，它可以工作，因为B.java有一个main方法 . 但是：如果你运行A.java它说：没有找到主要的方法 . 要运行的文件（A，B等必须定义主方法）如果运行java文件，它将查找main方法（开始执行点） .

  回复于 2024-04-27T00:53:39+08:00
• 2

  主要方法必须是类的方法：

  import java.net.Socket;
  
  public class Server {
  
      public static void main (String[] args) {
        Server s=new Server();
        s.runningserver();
      }
  

  所以必须在课堂宣言之后 .

  回复于 2024-04-27T00:53:39+08:00