Hello World de HTTPS: Get

Función que imprime "Hello world!" en respuesta a una solicitud GET.

Páginas de documentación que incluyen esta muestra de código

Para ver la muestra de código usada en contexto, consulta la siguiente documentación:

Muestra de código

C#

using Google.Cloud.Functions.Framework;
using Microsoft.AspNetCore.Http;
using System.Threading.Tasks;

namespace HelloWorld
{
    public class Function : IHttpFunction
    {
        public async Task HandleAsync(HttpContext context)
        {
            await context.Response.WriteAsync("Hello World!");
        }
    }
}

C++

#include <google/cloud/functions/http_request.h>
#include <google/cloud/functions/http_response.h>

namespace gcf = ::google::cloud::functions;

gcf::HttpResponse hello_world_get(gcf::HttpRequest) {  // NOLINT
  return gcf::HttpResponse{}
      .set_header("content-type", "text/plain")
      .set_payload("Hello World!");
}

Go


// Package helloworld provides a set of Cloud Functions samples.
package helloworld

import (
	"fmt"
	"net/http"
)

// HelloGet is an HTTP Cloud Function.
func HelloGet(w http.ResponseWriter, r *http.Request) {
	fmt.Fprint(w, "Hello, World!")
}

Java


package functions;

import com.google.cloud.functions.HttpFunction;
import com.google.cloud.functions.HttpRequest;
import com.google.cloud.functions.HttpResponse;
import java.io.BufferedWriter;
import java.io.IOException;

public class HelloWorld implements HttpFunction {
  // Simple function to return "Hello World"
  @Override
  public void service(HttpRequest request, HttpResponse response)
      throws IOException {
    BufferedWriter writer = response.getWriter();
    writer.write("Hello World!");
  }
}

Node.js

/**
 * HTTP Cloud Function.
 * This function is exported by index.js, and is executed when
 * you make an HTTP request to the deployed function's endpoint.
 *
 * @param {Object} req Cloud Function request context.
 *                     More info: https://expressjs.com/en/api.html#req
 * @param {Object} res Cloud Function response context.
 *                     More info: https://expressjs.com/en/api.html#res
 */
exports.helloGET = (req, res) => {
  res.send('Hello World!');
};

PHP


use Psr\Http\Message\ServerRequestInterface;

function helloGet(ServerRequestInterface $request): string
{
    return 'Hello, World!' . PHP_EOL;
}

Python

def hello_get(request):
    """HTTP Cloud Function.
    Args:
        request (flask.Request): The request object.
        <https://flask.palletsprojects.com/en/1.1.x/api/#incoming-request-data>
    Returns:
        The response text, or any set of values that can be turned into a
        Response object using `make_response`
        <https://flask.palletsprojects.com/en/1.1.x/api/#flask.make_response>.
    Note:
        For more information on how Flask integrates with Cloud
        Functions, see the `Writing HTTP functions` page.
        <https://cloud.google.com/functions/docs/writing/http#http_frameworks>
    """
    return 'Hello World!'

Ruby

require "functions_framework"

FunctionsFramework.http "hello_get" do |_request|
  # The request parameter is a Rack::Request object.
  # See https://www.rubydoc.info/gems/rack/Rack/Request

  # Return the response body as a string.
  # You can also return a Rack::Response object, a Rack response array, or
  # a hash which will be JSON-encoded into a response.
  "Hello World!"
end

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