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要实现Java Socket的双向通信,你需要创建一个服务器端和客户端,它们可以通过套接字(Socket)进行数据的发送和接收。以下是一个简单的示例,展示了如何实现双向通信。
首先,我们创建一个服务器端:
import java.io.*; import java.net.*; public class Server { public static void main(String[] args) throws IOException { int port = 12345; ServerSocket serverSocket = new ServerSocket(port); System.out.println("Server is running on port: " + port); Socket socket = serverSocket.accept(); System.out.println("Client connected"); InputStream input = socket.getInputStream(); OutputStream output = socket.getOutputStream(); BufferedReader reader = new BufferedReader(new InputStreamReader(input)); PrintWriter writer = new PrintWriter(output, true); String line; while (true) { line = reader.readLine(); if (line != null) { System.out.println("Received from client: " + line); writer.println("Server received: " + line); } } } }
接下来,我们创建一个客户端:
import java.io.*; import java.net.*; public class Client { public static void main(String[] args) throws IOException { String host = "localhost"; int port = 12345; Socket socket = new Socket(host, port); System.out.println("Connected to server"); InputStream input = socket.getInputStream(); OutputStream output = socket.getOutputStream(); BufferedReader reader = new BufferedReader(new InputStreamReader(input)); PrintWriter writer = new PrintWriter(output, true); BufferedReader userInput = new BufferedReader(new InputStreamReader(System.in)); String line; while (true) { System.out.print("Enter message: "); line = userInput.readLine(); writer.println(line); line = reader.readLine(); if (line != null) { System.out.println("Server response: " + line); } } } }
在这个示例中,服务器端和客户端都使用了Socket
对象来创建连接。服务器端使用ServerSocket
对象监听指定端口,等待客户端连接。当客户端连接后,服务器端和客户端可以通过InputStream
和OutputStream
进行数据的读取和写入,从而实现双向通信。
要运行此示例,请先运行服务器端,然后运行客户端。你将看到它们之间的双向通信。