Question

我在绘图程序中遇到了这个恼人的错误。我通过绘制线在ArrayList中创建点，然后将其发送到我的服务器。但是，我收到此错误。这不是很好的，但是当我不画画时，我会暂停，所以用户不会向服务器发送任何积分。

我的课程：

public class TCPClient extends JPanel {


        public static ArrayList<Point> location = new ArrayList<>();

        private JTextArea consoleOutput = new JTextArea(1,20);

        public void addComponentToPane(Container pane) {
            consoleOutput.setEditable(false);
        }

        public TCPClient() {
            addMouseListener(new MouseAdapter() {
                @Override
                public void mousePressed(MouseEvent e) {
                    location.add(e.getPoint());
                }
            });

            addMouseMotionListener(new MouseMotionAdapter() {
                @Override
                public void mouseDragged(MouseEvent e) {
                    location.add(e.getPoint());
                    repaint();
                }
            });
            setPreferredSize(new Dimension(800, 500));
            setBackground(Color.WHITE);
        }

        @Override
        protected void paintComponent(Graphics g) {
            super.paintComponent(g);

            if(location.isEmpty()){
                return;
            }

             Point p = location.get(0);
             for (int i = 1; i < location.size(); i++) {
                 Point q = location.get(i);
                 g.drawLine(p.x, p.y, q.x, q.y);
                 p = q;
             }
        }

        public static void main(String argv[])  throws Exception {

            InetAddress SERVERIP = InetAddress.getLocalHost();

            JFrame frame = new JFrame("Drawing with friends");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.add(new TCPClient(), BorderLayout.CENTER);

            JTextArea IPadress = new JTextArea(1,20);
            IPadress.setEditable(false);
            IPadress.append("DEVICE IP: " + SERVERIP.getHostAddress());
            frame.add(IPadress, BorderLayout.SOUTH);

            frame.setSize(new Dimension(800,600));
            frame.setLocationRelativeTo(null);
            frame.setResizable(false);
            frame.setVisible(true);

                try {
                    while(true) {
                        BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
                        Socket clientSocket = new Socket("localhost", 9000);

                        ObjectOutputStream outToServer = new ObjectOutputStream(clientSocket.getOutputStream());

                        ObjectInputStream inFromServer = new ObjectInputStream(clientSocket.getInputStream());

                        outToServer.writeObject(location);

                        outToServer.flush();
                        clientSocket.close();

                        Thread.sleep(1000);
                    } 
                } catch (SocketException e) {
            }
        }
    }

控制台：

Exception in thread "main" java.net.SocketException: Connection reset
    at java.net.SocketInputStream.read(Unknown Source)
    at java.net.SocketInputStream.read(Unknown Source)
    at java.net.SocketInputStream.read(Unknown Source)
    at java.io.ObjectInputStream$PeekInputStream.peek(Unknown Source)
    at java.io.ObjectInputStream$BlockDataInputStream.peek(Unknown Source)
    at java.io.ObjectInputStream$BlockDataInputStream.peekByte(Unknown Source)
    at java.io.ObjectInputStream.skipCustomData(Unknown Source)
    at java.io.ObjectInputStream.readSerialData(Unknown Source)
    at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
    at java.io.ObjectInputStream.readObject0(Unknown Source)
    at java.io.ObjectInputStream.readObject(Unknown Source)
    at drawingwf.TCPServer.main(TCPServer.java:26)

我是否需要创建某种形式的例外，或者您会建议什么？

Answer 1

每次循环时都不要继续重新创建套接字和对象流。如果套接字在两端，则为它们创建一次。

线程“main”中的异常java.net.SocketException：java.net.SocketInputStream.read中的连接重置（未知源）

1 个答案: