UuidHttpServer.java

import com.sun.net.httpserver.HttpServer;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpExchange;
import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.util.UUID;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

public class UuidHttpServer {

    public static void main(String[] args) throws IOException {
        // Create the HTTP server on port 8000
        HttpServer server = HttpServer.create(new InetSocketAddress(8000), 0);
        // Set a context that responds to "/uuid" with a UUID
        server.createContext("/uuid", new UuidHandler());
        server.setExecutor(null); // creates a default executor
        server.start();
        System.out.println("Server is listening on port 8000...");
    }

    static class UuidHandler implements HttpHandler {
        @Override
        public void handle(HttpExchange exchange) throws IOException {
            // Log the request details
            String requestUri = exchange.getRequestURI().toString();
            String timestamp = LocalDateTime.now().format(DateTimeFormatter.ISO_LOCAL_DATE_TIME);
            System.out.println("Received request for " + requestUri + " at " + timestamp);

            // Generate a UUID
            String response = UUID.randomUUID().toString();
            // Send the response headers (200 OK and the length of the response)
            exchange.sendResponseHeaders(200, response.length());
            // Write the response body
            OutputStream os = exchange.getResponseBody();
            os.write(response.getBytes());
            os.close();
        }
    }
}