java - 即使关闭套接字也获取java.net.BindException

我是套接字编程的新手，只是尝试使用一个小程序来掌握套接字的工作原理。有一个客户端和一个服务器，我只是想从服务器和显示中加载一些字符串。但是，即使我在finally块中手动清理了所有资源，但每次创建服务器套接字时，都会得到java.net.BindException。请看下面的代码，并建议对可能导致此问题的内容进行一些编辑。我正在使用Eclipse。

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;

public class AdviceServer {

String[] adviceList = {
        "Take smaller bites",
        "Go for the tight jeans. No they do NOT" + "make you look fat.",
        "One word: inappropriate",
        "Just for today, be honest. Tell your"
                + "boss what you *really* think",
        "You might want to rethink that haircut." };

public void setUpServer() {

    ServerSocket serverSocket = null;

    try {
        if (serverSocket == null)
        serverSocket = new ServerSocket(8003);
        int i = 2;

        // Keep looping till we have clients.
        while (true) {
            Socket sock = serverSocket.accept();
            PrintWriter pw = new PrintWriter(sock.getOutputStream());
            pw.write(getRandomAdvice());
            pw.close();
            System.out.println(getRandomAdvice());
        }

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

public void setUpClient() {

    // Make a socket
    Socket chatSocket = null;
    try {
        chatSocket = new Socket("127.0.0.1", 8003);
        InputStreamReader isr = new InputStreamReader(
                chatSocket.getInputStream());

        // Make a chain stream Buffered Reader
        BufferedReader br = new BufferedReader(isr);

        String text;
        while ((text = br.readLine()) != null) {
            System.out.println(text);
        }

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


}

public String getRandomAdvice() {
    return adviceList[(int) (Math.random() * adviceList.length)];

}

public static void main(String[] args) {
    AdviceServer as = new AdviceServer();

    as.setUpClient();
    as.setUpServer();
}
}

任何帮助将不胜感激，因为我已尽一切努力来纠正此问题。

最佳答案

您必须运行两次代码，因此得到BindException。如在第一次运行中，服务器将在端口8003上运行并侦听，并且将出现ConnectionRefused错误。下次运行此程序时，客户端将在再次运行服务器代码时，从服务器获取消息，后跟BindException。

问题是服务器和客户端在同一主线程上运行。尝试在其他线程中运行服务器。并且还首先运行服务器，它将监听客户端的连接。