消息1倍以上

Question

class SomeUI  
{ 
SocketMessageSender messageSender; 
// ensure that its initialized ... 
private void bSendMessageActionPerformed(java.awt.event.ActionEvent evt) { 
     try { 
      // TODO add your handling code here: 
      messageSender.sendMessage(jMessage.getText()); 
      jMessage.setText(""); 
     } catch (IOException ex) { 
      Logger.getLogger(TeKServer.class.getName()).log(Level.SEVERE, null, ex); 
     } 
    } 
} 

ERROR：在线程异常 “AWT-EventQueue的-0” 了java.lang.RuntimeException：不可编译的源代码 - 错误的符号类型：bSendMessageActionPerformed

Answer 1

为什么你不断打开插座，并关闭它每按一下按钮。创建一个类，只要应用程序运行，就可以让套接字保持打开状态。套接字连接可以做到当应用程序starts.You可以尝试下面的类

public class SocketMessageSender 
{ 
    private String host; 
    private int port; 
    private DataOutputStream dos; 

    public SocketMessageSender(String host, int port) 
    { 
     this.host = host; 
     this.port = port; 
    } 

    // call when application starts 
    public void initConnection() throws IOException 
    { 
     InetAddress address = InetAddress.getByName(host); 
     Socket connection = new Socket(address, port); 
     dos = new DataOutputStream(connection.getOutputStream()); 
    } 

    //call from button click 
    public void sendMessage(String message) throws IOException 
    { 
     if(dos != null) 
     { 
      dos.writeUTF(message); 
      dos.flush(); 
     } 
    } 

    // call when application exits 
    public void closeConnection() throws IOException 
    { 
     if(dos!= null) 
     { 
      dos.close(); 
     } 
    } 
} 

希望它可以帮助...

假设你有一个像

class SomeUI 
{ 
    SocketMessageSender messageSender; 
    // ensure that its initialized ... 



private void bSendMessageActionPerformed(java.awt.event.ActionEvent evt) { 
    messageSender.sendMessage(jMessage.getText()); 
    jMessage.setText(""); 
} 
} 

我觉得一个类该类签名应该是这样的...

public class MyPanel extends JPanel implements ActionListener 
{ 
    private SocketMessageSender messageSender; 
    private Message jMessage = new Message();// This is just a temp class, replace this with your class 

    public MyPanel() 
    { 
     messageSender = new SocketMessageSender("some host", 8080); 
     try 
     { 
      messageSender.initConnection(); 
     } 
     catch(IOException e) 
     { 
      Logger.getLogger(MyPanel.class.getName()).log(Level.SEVERE, null, e); 
     } 
    } 

    @Override 
    public void actionPerformed(ActionEvent e) 
    { 
     try { 
      // TODO add your handling code here: 
      messageSender.sendMessage(jMessage.getText()); 
      jMessage.setText(""); 
     } catch (IOException ex) { 
      Logger.getLogger(MyPanel.class.getName()).log(Level.SEVERE, null, ex); 
     } 
    } 
} 

Answer 2

考虑使用ObjectOutputStream/ObjectInputStream的并通过套接字写入对象。 java2s.com上有很多示例

请注意，如果您多次编写同一对象，则需要在写入之前重置（）流，然后刷新它。