Java Socket close() 方法

2025 年 3 月 25 日 | 阅读 2 分钟

Java Socket 类的 close() 方法用于关闭指定的套接字。一旦套接字被关闭，它就不能再用于进一步的网络通信。如果套接字有关联的通道，该通道也会被关闭。

语法

参数

不适用

指定者

AutoCloseable 接口中的 close() 方法
Closeable 接口中的 close() 方法

抛出

IOException - 如果在关闭此套接字时发生 I/O 错误。

示例 1

import java.io.IOException;
import java.net.*;
public class JavaSocketCloseExample1 {
    public static void main(String[] args) throws IOException {
      Socket socket = new Socket();
      InetAddress inetAddress=InetAddress.getByName("localhost");
      //the port should be greater or equal to 0, else it will throw an error
        int port=1085;
        //calling the constructor of the SocketAddress class
        SocketAddress socketAddress=new InetSocketAddress(inetAddress, port);
        //closing the socket
        socket.bind(socketAddress);
        socket.connect(socketAddress);
        //binding the  socket with the inetAddress and port number
        System.out.println("Inet address: "+socket.getInetAddress());
        System.out.println("Port number: "+socket.getLocalPort());
        //closing the socket
        socket.close();
        System.out.println("After calling the close() method...");
        System.out.println("Inet address: "+socket.getInetAddress());
        System.out.println("Port number: "+socket.getLocalPort());
    }
}

输出

Inet address: localhost/127.0.0.1
Port number: 1085
After calling the close() method...
Inet address: localhost/127.0.0.1
Port number: 1085

示例 2

import java.io.IOException;
import java.net.*;
public class JavaSocketCloseExample2 {
    public static void main(String[] args) throws IOException {
      Socket socket = new Socket();
      InetAddress inetAddress=InetAddress.getByName("localhost");
      //the port should be greater or equal to 0, else it will throw an error
        int port=1085;
        //calling the constructor of the SocketAddress class
        SocketAddress socketAddress=new InetSocketAddress(inetAddress, port);
        //closing the socket
        socket.close();
        //binding the  socket with the inetAddress and port number
        //It will throw an exception, as the socket is already closed
        socket.bind(socketAddress);
        System.out.println("Inet address: "+socket.getInetAddress());
        System.out.println("Port number: "+socket.getLocalPort());
    }
}

输出

Exception in thread "main" java.net.SocketException: Socket is closed
	at java.net.Socket.bind(Socket.java:625)
	at com.tpointtech.JavaSocketCloseExample2.main(JavaSocketCloseExample2.java:17)

下一主题Java Socket 类

Java Socket close() 方法

语法

参数

返回

指定者

抛出

示例 1

示例 2

联系信息

关注我们

教程

面试题

在线编译器

Python

Java

.Net Framework

AI, ML and Data Science

Cloud Technology

B.Tech and MCA

Web Technology

PHP

Software Testing

Technical Interview

Java Interview

Python

Web Interview

Database Interview

B.Tech / MCA

Important Interview

Software Testing Interview

Company Interviews

Online Compilers

Multiple Choice Questions

Java String 方法

Java 数组类

Java Math 方法

ArrayList 方法

Java List 方法

Java 线程方法

Java Date 类

Java Collection 方法

Java ListIterator 类

Java NIO 教程

HttpURLConnection

Java Deque

Java HttpCookie 类

Java URL 类

Java Vector 类

Java Socket 类

Java Executors

Java Integer 类

Java IdentityHashMap

Java ArrayBlockingQueue

Java Timestamp

Java Spliterator

Java Bitset

Java Instant

Java Compiler 类

Java AtomicInteger 类

Java AtomicLong 方法

Java Authenticator

Java BigDecimal 类

Big Integer 类

Java Boolean 类

Java Byte Class

Java Class

Java Collections 类

CopyOnWriteArrayList

LinkedBlockingDeque

Java Long 类

LinkedTransferQueue

Java List

Java MulticastSocket

Java Number 类

Java Phaser 类

Java Socket close() 方法

语法

参数

返回

指定者

抛出

示例 1

示例 2

相关帖子

Socket setSoTimeout()

Socket getLocalSocketAddress()

Socket setKeepAlive()

Socket getPort()

Socket isOutputShutdown()

Socket setSoLinger()

Socket getTcpNoDelay()

Socket 类

Socket isBound()