使用线程在 Swing (Java) 中实现 MVC 范例

Question

我正在尝试使用多线程在 Java (Swing) 中实现 MVC 范例。目前，我正在扩展视图 class 和观察者 Class 以及模型 Class 和 Observable Class 及其工作正常（我的代码是沿着这个例子构建的: http://austintek.com/mvc/)。控制器 class 只需调用相应的模型和视图函数，并且有一个主 "glue" 程序可以设置所有内容。但是，这种方法不使用线程。 有什么方法可以同时使用和和Observer/Observableclass线程来实现这个吗？

（我的目标是将 M、V 和 C 中的每一个实现为单独的线程）

以下是我的部分查看代码：

public class View implements Observer
{ 

/*************************************** View *************************************
        **
    **  This function is the constructor of the View class.
    **
    **      PRE: <nothing>
    **      POST: the GUI is created and the directory is displayed on the screen.
    **      RETURN: <N/A>
    **
    **/
    View(String name)
    {
        threadName = name;

        //frame in constructor and not an attribute as doesn't need to be visible to whole class
        JFrame frame = new JFrame("simple MVC");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        addElements(frame); // this is implemented separately

        // frame.addWindowListener(new CloseListener());    
        frame.setSize(900, 732);
        // frame.setLocation(100,100);

        /** Display the window **/
        //frame.pack();
        frame.setVisible(true);

    }// View

以下是我的模型代码的一部分：

 public class Model extends java.util.Observable
    {
        /****************** variable DECLARATIONS *********************/

    // The hash table in which the directory is stored
    private Hashtable<String, Integer> tel_dir 
                    = new Hashtable<String, Integer>();

    // The path of the telephone directory during runtime
    private URL filePath
            = Model.class.getClassLoader().getResource("directory.txt");

    // the name of the thread
    private String  threadName;
                        /****** private Thread  t; ******/
    // the object in which the message is sent to the view
    private Message message = new Message();

    /** GETTERS and SETTERS **/

    ....


    /*************************************** Model *************************************
    **
    **  This function is the constructor of the model class.
    **
    **      PRE: <nothing>
    **      POST: the telephone directory is input from the file and stored in a hash
    **            table.
    **      RETURN: <N/A>
    **
    **/
    Model(String name)
    {
        int    phone_num;
        String customer_name;
        Scanner scanner = null;
        threadName      = name;

        /** Opening the handle to the file containing the telephone directory **/
        try
        {
            scanner = new Scanner(new File(filePath.getPath()));
        }
        catch (FileNotFoundException e1)
        {
            e1.printStackTrace();
        }

        /** Inputting from the file and storing it in the hash table **/
        while (scanner.hasNextInt())
        {
            phone_num     = scanner.nextInt();
            customer_name = scanner.nextLine();
            customer_name = customer_name.trim();
            tel_dir.put(customer_name, phone_num);
        }

    }// Model

Answer 1

My aim is to implement each of the M, V and C as a separate thread.

这可能不是一个有用的划分。必须在 event dispatch thread, and users expect Swing controls to remain responsive, as discussed here.

上仅构建和操作 Swing 视图

取而代之，运行任何一个耗时的后台模型SwingWorker, and update listening views in your implementation of process(). In this example, the view components are updated directly, but you can also fire a custom event for registered listeners, as suggested here. In this example, the chart listens to its data model, series, via SeriesChangeEvent; it responds to the worker's update in process(). You can show progress via a PropertyChangeEvent, as suggested here or here。

使用线程在 Swing (Java) 中实现 MVC 范例

Implementing MVC paradigm in Swing (Java) using Threads

java

model-view-controller

swing

multithreading