Question

创建简单的聊天服务。我有一个TCPServer程序和一个TCPClient程序。程序是多线程的，我的客户端程序应该从终端获取输入并将其发送到服务器程序。我在使用简单的while循环时遇到了麻烦，而且我已经结束了。

我尝试过BufferedReader（使用.readLine（）和Scanner（使用.nextLine（））来尝试读取消息。当我使用.nextLine（）时，我得到一个＆＃34; java.util。 NoSuchElementException：找不到行＆＃34;，当我使用.readLine（）时，我得到一个＆＃34; java.io.IOException：Stream closed＆＃34;。这是我的代码（这是我的线程类，在我的客户端程序中）：

private static class SendingThread extends Thread{

private Socket socket;
//  private ArrayList<Socket> socketArray;

//Constructor
SendingThread(Socket socket){
    this.socket = socket;
    //      this.socketArray = socketArray;
}

public void run() {
    try {
        System.out.println("SendingThread run method executed");
        //Start timer
        long startTime = System.currentTimeMillis();

        //PrintWriter to pass messages to server
        PrintWriter out = new PrintWriter(socket.getOutputStream(),true); 
        System.out.println("PrintWriter instantiated");


        //Set up stream for keyboard entry
        BufferedReader userEntry = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("BufferedReader instantiated");

        // Get data from the user and send it to the server
        String message;
        do{
            System.out.print("Enter message: ");
            message = userEntry.readLine();
            out.println(message);
        } while (!message.equals("DONE"));

        //Stop timer
        long endTime = System.currentTimeMillis();
        //Variables to measure time elapsed
        long totalTime = endTime - startTime;
        long milliseconds = totalTime % 1000;
        long seconds = (totalTime / 1000) % 60;
        long minutes = (totalTime / 60000) % 60;
        long hours = (totalTime / 3600000) % 60;

        //Receive final report and close connection
        System.out.println("\n*** Information received from the server ***");
        System.out.println("Length of session: " + hours + "::" + minutes + "::" + seconds + "::" + milliseconds);
    } catch(IOException e) {
        e.printStackTrace();
    } finally {
        try {
            System.out.println("\n!!!!! Closing connection... !!!!!");
            socket.close(); 
        } catch(IOException e) {
            System.out.println("Unable to disconnect!");
            System.exit(1);
        }
    }
}

}

问题出在我的do-while循环的第二行，它会抛出错误。它不会等待我的输入，只是终止。

BufferedReader（System.in）readLine（）方法返回IOException，Stream关闭

0 个答案: