Java GUI冻结

Question

我正在尝试创建一个简单的TCP客户端服务器应用程序接口 用户可以在按下相应按钮时启动或停止服务器 当用户按下应连接到服务器的按钮时，我创建了一个StartServer按钮 面临的问题是当用户点击按钮时发生注意并且界面停止

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // TODO add your handling code here:
    DefaultListModel dlm=new DefaultListModel();
    String clientSentence; 
    String capitalizedSentence;
    try {
        welcomeSocket= new ServerSocket(6789);
        dlm.addElement("server started..");            
        dlm.addElement("Server Waiting for Connections on Port 6789");
        jList1.setModel(dlm); 
        displayfull();
         while(true)
        {                
        DataOutputStream outToClient = null;
        try {


            Socket connectionSocket = welcomeSocket.accept();
            //dlm.addElement("Client Connected ");
            BufferedReader inFromClient = new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));
            //dlm.addElement("Obtained a handle on Client Input Stream");
            outToClient = new DataOutputStream(connectionSocket.getOutputStream());
            //dlm.addElement("Obtained a handle on Client Output Stream");
            clientSentence = inFromClient.readLine();
            //dlm.addElement("Received: " + clientSentence);
            capitalizedSentence = clientSentence.toUpperCase() + '\n';
            outToClient.writeBytes(capitalizedSentence);
            //dlm.addElement("Message Sent");
        } catch (Exception e) {

        } 

    }               

    } catch (Exception e) {
        dlm.addElement(e);
    }
   jList1.setModel(dlm); 
    displayfull();
}   

Answer 1

正如其他人所暗示的那样，你正在Event Dispatch Thread上花费宝贵的时间 如果您阅读了有关如何Concurrency in Swing的教程，您会发现您获得了Swing worker等工具。

Stack Overflow上有很多这样的问题，有些问题比其他问题更有用。

• Java's Swing Threading
• JFrame without Freezing
• Freezing on Database