java - java中来自服务器的错误

Question

我有以下代码，它是java中的一个线程池，仅接受一个客户端

public class ServerThread implements Runnable {

    ServerSocket serverSocket;
    Socket clientSocket;
    protected boolean isStopped = false;
    int serverPort = 6500;
    private String serverIpAddress = "127.0.0.1";
    DataInputStream is;
    ObjectOutputStream os=null;

    protected BlockingQueue queue = null;


    protected ExecutorService threadPool2 =
    Executors.newFixedThreadPool(1);

    public ServerThread(BlockingQueue queue) { 
        this.queue=queue;
    }

    public void run() {
        try {
            InetSocketAddress serverAddr = new InetSocketAddress(serverIpAddress, serverPort);
            serverSocket = new ServerSocket();
            serverSocket.bind(serverAddr);

            System.out.println("s-a creat");

        } catch (UnknownHostException e) {
            System.err.println("Don't know about host");
        } catch (IOException e) {
            e.printStackTrace();
        }


        while(!isStopped()){
            clientSocket=null;

            try{            
                clientSocket = serverSocket.accept();
    }
            catch(Exception e)
            {
                e.printStackTrace();        
            }

            WorkerServerRunnable workerRunnable = new WorkerServerRunnable(queue,clientSocket);
            this.threadPool2.execute(workerRunnable);

        }
        this.threadPool2.shutdown();
        System.out.println("Server Stopped.");
    }

    private synchronized boolean isStopped(){
        return this.isStopped;
    }

    public synchronized void stop() {
        this.isStopped = true;
        try {
            this.serverSocket.close();
        } catch (IOException e) {
            throw new RuntimeException("Error closing server", e);
        }

    }

}

但问题是我无法让我的服务器处于开启状态。 我的意思是，一旦我按下运行键，我就会收到以下错误:

java.net.SocketException: Socket is not bound yet at java.net.ServerSocket.accept(Unknown Source) at servers.ServerThread.run(ServerThread.java:60) at java.lang.Thread.run(Unknown Source) java.net.BindException: Address already in use: JVM_Bind at java.net.PlainSocketImpl.socketBind(Native Method) at java.net.PlainSocketImpl.bind(Unknown Source) at java.net.ServerSocket.bind(Unknown Source) at java.net.ServerSocket.bind(Unknown Source) at servers.ServerThread.run(ServerThread.java:44) at java.lang.Thread.run(Unknown Source)

即使我关闭整个应用程序并再次运行它仍然出现相同的错误......有人知道为什么吗？谢谢!

Answer 1

某些其他程序已在使用端口 6500。请检查您是否没有运行该程序的另一个实例。

尝试运行

netstat -lp

查看哪些进程正在使用哪些端口。确保您要监听的端口未在 netstat 的输出中列出。