Java Client Server Socket Error: java.net.BindException: Address already in use: bind

Question

这是服务器端代码我很确定错误是服务器套接字没有关闭端口？当我运行程序时没有问题但是，当我再次运行它时我得到这个错误：

Exception in thread "main" java.net.BindException: Address already in use: bind
    at java.base/sun.nio.ch.Net.bind0(Native Method)
    at java.base/sun.nio.ch.Net.bind(Net.java:550)
    at java.base/sun.nio.ch.Net.bind(Net.java:539)
    at java.base/sun.nio.ch.NioSocketImpl.bind(NioSocketImpl.java:643)
    at java.base/java.net.ServerSocket.bind(ServerSocket.java:396)
    at java.base/java.net.ServerSocket.<init>(ServerSocket.java:282)
    at java.base/java.net.ServerSocket.<init>(ServerSocket.java:173)
    at internet.server.main(server.java:11)

但是，如果我更改端口号，它会修复一次运行ning。有人也请帮忙我还没有学会 java 服务器套接字或客户端套接字所以我需要帮助据我所知没有其他人有这个问题

package internet;

import java.io.IOException;
import java.net.*;
import java.io.*;

public class server {

    public static void main(String[] args) throws IOException {
        println("Compiled");
        ServerSocket ss = new ServerSocket(5502);
        Socket s = ss.accept();
        println("Client Connected!");
        InputStreamReader in = new InputStreamReader(s.getInputStream());
        BufferedReader bf = new BufferedReader(in);
        String str = bf.readLine();
        println("Client: " + str);
        
        s.close();
        ss.close();
            
    }
    
    public static void println(String args) {
        System.out.println(args);
    }
}

Answer 1

尝试关闭那些流，包括 InputStreamReader 和 BufferedReader。在 socket 和 ServerSocket 之前关闭它们。

bf.close();
in.close();

Answer 2

只要您在重新运行之前终止之前的执行，就可以正常工作。

Java Client Server Socket Error: java.net.BindException: Address already in use: bind

Java Client Server Socket Error: java.net.BindException: Address already in use: bind

java

client

server