php和java交互

@RestController
public class HelloController {
    @GetMapping("/hello")
    public String sayHello() {
        return "Hello from Java!";
    }
}

<?php
$url = 'http://localhost:8080/hello';
$response = file_get_contents($url);
echo $response;
?>

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

public class SocketServer {
    public static void main(String[] args) throws IOException {
        ServerSocket serverSocket = new ServerSocket(12345);
        Socket clientSocket = serverSocket.accept();
        PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
        out.println("Hello from Java!");
        clientSocket.close();
        serverSocket.close();
    }
}

<?php
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
$result = socket_connect($socket, '127.0.0.1', 12345);
if ($result === false) {
    echo "socket_connect() failed.\nReason: " . socket_strerror(socket_last_error($socket)) . "\n";
} else {
    socket_write($socket, "Hello from PHP!", 14);
    $response = socket_read($socket, 1024);
    echo "Reply From Server: " . $response;
}
socket_close($socket);
?>