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。