当我同时将多个客户端连接到Java服务器时，套接字写入错误

Question

我正在创建一个桌面应用程序，其中多个客户端必须使用它们之间的套接字连接来连接到服务器。我成功连接了它们但是当我将多个客户端同时连接到服务器时出现问题，服务器出现错误“套接字写入错误” 我的代码低于plz，建议我回答..

public class SocketConnection implements Runnable {
    // password of oracle database

    ServerSocket serverSocket = null;
    Socket socket = null;
    DataInputStream dataInputStream = null;
    DataOutputStream dataOutputStream = null;
    Socket clientSocket = null;
    DBConnection dbConnection;


    public SocketConnection() {
        // TODO Auto-generated constructor stub

        dbConnection = new DBConnection();

        if (con != null) {

            serverSocket = dbConnection.createSocket();

            if (serverSocket != null) {

                System.out.println("Server Started. Looking for the connections.");
                System.out.println("Listening Port:8888.......");
            }



            Thread t = new Thread(this);
            t.start();
        }

    }


    @Override
    public void run() {
        // TODO Auto-generated method stub
        while (true) {
            try {
                clientSocket = serverSocket.accept();
                System.out.println("Connection Accepted");
                Connect m_connect = new Connect(clientSocket);

            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

        }

    }

    public class Connect implements Runnable {
        Socket clientSocket = null;
        Thread t = null;
        private ResultSet res1;
        private ResultSet res2;
        Statement stmt;
        private File mkFolder;

        public Connect(Socket clientSocke) {
            // TODO Auto-generated constructor stub
            this.clientSocket = clientSocke;

            try {

                stmt = con.createStatement();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            try {

            } catch (Exception e) {
                // TODO: handle exception
                e.printStackTrace();
            }
            t = new Thread(this);
            t.start();
        }

        @Override
        public void run() {

            try {
                dataInputStream = new DataInputStream(
                        clientSocket.getInputStream());
                dataOutputStream = new DataOutputStream(
                        clientSocket.getOutputStream());
                System.out.println("Connection established::"
                        + clientSocket.getInetAddress());
                String pass = dataInputStream.readUTF();
                System.out.println(pass);
                if (pass.equals("1")) {
                    //here is read n write operation

                } else if (pass.equals("3")) {

                    //here is read n write operation

                } else if (pass.equals("2")) {

                    //here is read n write operation

                } else if (pass.equals("4")) {
                    //here is read n write operation

                } else if (pass.equals("5")) {
                    //here is read n write operation

                }
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } finally {
                if (socket != null) {
                    try {
                        socket.close();
                    } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }

                if (dataOutputStream != null) {
                    try {
                        dataOutputStream.close();
                    } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }

                if (dataInputStream != null) {
                    try {
                        dataInputStream.close();
                    } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }
                if (stmt != null) {
                    try {
                        stmt.close();
                    } catch (SQLException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }




    }

}

Answer 1

为什么你这么低级的方式呢？选择记录良好的API并通过它进行交流！

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