Esta página explica como reCAPTCHA V2 Callback é exibido e como funciona a verificação de reCAPTCHA V2 Callback. Por vezes, não há botão de envio, ao invés, é usada uma função de retorno de chamada. A função é executada quando o reCAPTCHA é resolvido.
Em muitos casos, reCAPTCHA V2 Callback impede a acessibilidade, frustra os utilizadores, limita o acesso a informação aberta e dificulta o teste de aplicações e sítios. Utilize o solucionador de reCAPTCHA V2 Callback para o contornar automaticamente.
Open developer's console in your browser and find element with data-sitekey attribute.
<div class="g-recaptcha" data-sitekey="6LfD3PIbAAAAAJs_eEHvoOl75_83eXSqpPSRFJ_u" id="recaptcha"></div>Send sitekey and pageurl to our API.
// https://github.com/2captcha/2captcha-php
require(__DIR__ . '/../src/autoloader.php');
$solver = new \TwoCaptcha\TwoCaptcha('YOUR_API_KEY');
try {
$result = $solver->recaptcha([
'sitekey' => '6LfD3PIbAAAAAJs_eEHvoOl75_83eXSqpPSRFJ_u',
'url' => 'https://2captcha.com/demo/recaptcha-v2-callback',
]);
} catch (\Exception $e) {
die($e->getMessage());
}
die('Captcha solved: ' . $result->code);# https://github.com/2captcha/2captcha-python
import sys
import os
sys.path.append(os.path.dirname(os.path.dirname(os.path.realpath(__file__))))
from twocaptcha import TwoCaptcha
api_key = os.getenv('APIKEY_2CAPTCHA', 'YOUR_API_KEY')
solver = TwoCaptcha(api_key)
try:
result = solver.recaptcha(
sitekey='6LfD3PIbAAAAAJs_eEHvoOl75_83eXSqpPSRFJ_u',
url='https://2captcha.com/demo/recaptcha-v2-callback')
except Exception as e:
sys.exit(e)
else:
sys.exit('solved: ' + str(result))// https://github.com/2captcha/2captcha-java
package examples;
import com.twocaptcha.TwoCaptcha;
import com.twocaptcha.captcha.reCAPTCHA;
public class reCAPTCHAV2Example {
public static void main(String[] args) {
TwoCaptcha solver = new TwoCaptcha("YOUR_API_KEY");
ReCaptcha captcha = new ReCaptcha();
captcha.setSiteKey("6LfD3PIbAAAAAJs_eEHvoOl75_83eXSqpPSRFJ_u");
captcha.setUrl("https://2captcha.com/demo/recaptcha-v2-callback");
try {
solver.solve(captcha);
System.out.println("Captcha solved: " + captcha.getCode());
} catch (Exception e) {
System.out.println("Error occurred: " + e.getMessage());
}
}
}// https://github.com/2captcha/2captcha-csharp
using System;
using System.Linq;
using TwoCaptcha.Captcha;
namespace TwoCaptcha.Examples
{
public class reCAPTCHAV2Example
{
public void Main()
{
TwoCaptcha solver = new TwoCaptcha("YOUR_API_KEY");
ReCaptcha captcha = new ReCaptcha();
captcha.SetSiteKey("6LfD3PIbAAAAAJs_eEHvoOl75_83eXSqpPSRFJ_u");
captcha.SetUrl("https://2captcha.com/demo/recaptcha-v2-callback");
try
{
solver.Solve(captcha).Wait();
Console.WriteLine("Captcha solved: " + captcha.Code);
}
catch (AggregateException e)
{
Console.WriteLine("Error occurred: " + e.InnerExceptions.First().Message);
}
}
}
}// https://github.com/2captcha/2captcha-go
package main
import (
"fmt"
"log"
"github.com/2captcha/2captcha-go"
)
func main() {
client := api2captcha.NewClient("API_KEY")
captcha := api2captcha.ReCaptcha{
SiteKey: "6LfD3PIbAAAAAJs_eEHvoOl75_83eXSqpPSRFJ_u",
Url: "https://2captcha.com/demo/recaptcha-v2-callback",
}
code, err := client.Solve(captcha.ToRequest())
if err != nil {
log.Fatal(err);
}
fmt.Println("code "+code)
}// https://github.com/2captcha/2captcha-cpp
#include <cstdio>
#include "curl_http.hpp"
#include "api2captcha.hpp"
int main (int ac, char ** av)
{
api2captcha::curl_http_t http;
http.set_verbose (true);
api2captcha::client_t client;
client.set_http_client (&http);
client.set_api_key (API_KEY);
api2captcha::recaptcha_t cap;
cap.set_site_key ("6LfD3PIbAAAAAJs_eEHvoOl75_83eXSqpPSRFJ_u");
cap.set_url ("https://2captcha.com/demo/recaptcha-v2-callback");
try
{
client.solve (cap);
printf ("code '%s'\n", cap.code ().c_str ());
}
catch (std::exception & e)
{
fprintf (stderr, "Failed: %s\n", e.what ());
}
return 0;
}# https://github.com/2captcha/2captcha-ruby
require 'api_2captcha'
client = Api2Captcha.new("YOUR_API_KEY")
result = client.recaptcha_v2({
googlekey: '6Le-wvkSVVABCPBMRTvw0Q4Muexq1bi0DJwx_mJ-',
pageurl: 'https://mysite.com/page/with/recaptcha_v2'
})Wait for the result, which may look like this:
03AGdBq27lvCYmKkaqDdxWLfMe3ovADGfGlSyiR-fN_EJrZGniTAmdH1XSjK8ralsctfjOLX2K0T7dJfxPqqga8dtSG2Lmns8Gk2ckcU6PQzUFieBqrtpkr5PPwnngew0Rnot2ik1y8m202u6pHTIquExlEYSlzS8vfoyPPt8fCf-Zrbu8vWkiY8Ogj17ommHMgkguZbmEyOdfLTXzhRko-a655_jJdCMjEtMxva-b78DnGlXu9d0o6vEmrw9n8ABu4lLsWnIbYPH0beXRRIkUE3si64Xhwkh1aO3L1HaIR3sfR0vOs3GV1OBzry_tFsZM0ZhSQovKJwjLlotrYajyTSRv3hgvXtLlLxXzbAwgeI91-wM7AFEte0uO_DhcNajxZr7E50wU9vuAe_drGWe4q-hNx4PQPenjaw
Send GET or POST request to our API URL: https://2captcha.com/in.php with method set to userrecaptcha and provide the value found on previous step as value for googlekey and full page URL as value for pageurl.
Request example:
GET https://2captcha.com/in.php?key=YOUR_API_KEY&method=userrecaptcha&googlekey=6LfD3PIbAAAAAJs_eEHvoOl75_83eXSqpPSRFJ_u&pageurl=http://2captcha.com/demo/recaptcha-v2-callback
If everything is fine server will return the ID of your captcha:
OK|2122988149
Otherwise server will return an error code.
After 15-20 seconds send GET request to get the result:
GET https://2captcha.com/res.php?key=YOUR_API_KEY&action=get&id=2122988149
If captcha is already solved server will respond with the answer token:
OK|03AHJ_Vuve5Asa4koK3KSMyUkCq0vUFCR5Im4CwB7PzO3dCxIo11i53epEraq-uBO5mVm2XRikL8iKOWr0aG50sCuej9bXx5qcviUGSm4iK4NC_Q88flavWhaTXSh0VxoihBwBjXxwXuJZ-WGN5Sy4dtUl2wbpMqAj8Zwup1vyCaQJWFvRjYGWJ_TQBKTXNB5CCOgncqLetmJ6B6Cos7qoQyaB8ZzBOTGf5KSP6e-K9niYs772f53Oof6aJeSUDNjiKG9gN3FTrdwKwdnAwEYX-F37sI_vLB1Zs8NQo0PObHYy0b0sf7WSLkzzcIgW9GR0FwcCCm1P8lB-50GQHPEBJUHNnhJyDzwRoRAkVzrf7UkV8wKCdTwrrWqiYDgbrzURfHc2ESsp020MicJTasSiXmNRgryt-gf50q5BMkiRH7osm4DoUgsjc_XyQiEmQmxl5sqZP7aKsaE-EM00x59XsPzD3m3YI6SRCFRUevSyumBd7KmXE8VuzIO9lgnnbka4-eZynZa6vbB9cO3QjLH0xSG3-egcplD1uLGh79wC34RF49Ui3eHwua4S9XHpH6YBe7gXzz6_mv-o-fxrOuphwfrtwvvi2FGfpTexWvxhqWICMFTTjFBCEGEgj7_IFWEKirXW2RTZCVF0Gid7EtIsoEeZkPbrcUISGmgtiJkJ_KojuKwImF0G0CsTlxYTOU2sPsd5o1JDt65wGniQR2IZufnPbbK76Yh_KI2DY4cUxMfcb2fAXcFMc9dcpHg6f9wBXhUtFYTu6pi5LhhGuhpkiGcv6vWYNxMrpWJW_pV7q8mPilwkAP-zw5MJxkgijl2wDMpM-UUQ_k37FVtf-ndbQAIPG7S469doZMmb5IZYgvcB4ojqCW3Vz6Q
If captcha is not solved yet server will return CAPCHA_NOT_READY result. Repeat your request in 5 seconds. If something went wrong server will return an error code.
In developer's console, execute the callback function verifyDemoRecaptcha passing the token string as an argument like: verifyDemoRecaptcha('TOKEN')
Please note that each website has own reCAPTCHA implementation with unique callback definition and the callback function name will be different from our demo, or even an anonymous function can be used. This code snippet can help you to find the callback definition.