Renderizado de JavaScript

Aprende sobre el encabezado que puedes incluir en tus solicitudes para obtener datos totalmente renderizados, que puedes guardar en un archivo HTML o como una captura PNG.

Si la página que desea extraer requiere cargar JavaScript para cargar dinámicamente todos los datos necesarios en el DOM, en lugar de configurar y usar un Headless Browser por su cuenta, puede incluir el "X-Oxylabs-Render: html" encabezado con sus solicitudes. Todas las solicitudes con este encabezado incluido se renderizarán por completo y todos los datos se almacenarán en un archivo HTML o una captura de pantalla PNG (según el parámetro pasado).

El renderizado de JavaScript tarda más en extraer la página. Al usar el renderizado de JavaScript, establezca el valor de tiempo de espera del lado del cliente en 180 segundos.

Para garantizar el menor consumo de tráfico, nuestro sistema no carga activos innecesarios durante el renderizado de la página.

Este parámetro tiene dos valores disponibles:

• html (HTML de una página renderizada)
• png (bytes sin procesar que se pueden guardar como PNG)

Ejemplos de código

cURL

curl -k -v -x https://unblock.oxylabs.io:60000 \
-U 'USERNAME:PASSWORD' \
'https://ip.oxylabs.io/location' \
-H 'X-Oxylabs-Render: html'

Python

import requests

# Use your Web Unblocker credentials here.
USERNAME, PASSWORD = 'YOUR_USERNAME', 'YOUR_PASSWORD'

# Define proxy dict.
proxies = {
  'http': f'http://{USERNAME}:{PASSWORD}@unblock.oxylabs.io:60000',
  'https': f'https://{USERNAME}:{PASSWORD}@unblock.oxylabs.io:60000',
}

headers = {
    'X-Oxylabs-Render': 'html'
}

response = requests.get(
    'https://ip.oxylabs.io/location',
    verify=False,  # It is required to ignore certificate
    proxies=proxies,
    headers=headers,
)

# Print result page to stdout
print(response.text)

# Save returned HTML to result.html file
with open('result.html', 'w') as f:
    f.write(response.text)

Node.js

import fetch from 'node-fetch';
import { HttpsProxyAgent } from 'https-proxy-agent';

const username = 'YOUR_USERNAME';
const password = 'YOUR_PASSWORD';

const agent = new HttpsProxyAgent(
  `https://${username}:${password}@unblock.oxylabs.io:60000`
);

// We recommend accepting our certificate instead of allowing insecure (http) traffic
process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = 0;

const headers = {
   'X-Oxylabs-Render': 'html',
}

const response = await fetch('https://ip.oxylabs.io/location', {
  method: 'get',
  headers: headers,
  agent: agent,
});

console.log(await response.text());

PHP

<?php
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://ip.oxylabs.io/location');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_PROXY, 'https://unblock.oxylabs.io:60000');
curl_setopt($ch, CURLOPT_PROXYUSERPWD, 'YOUR_USERNAME' . ':' . 'YOUR_PASSWORD');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);

curl_setopt_array($ch, array(
    CURLOPT_HTTPHEADER  => array(
        'X-Oxylabs-Render: html'
    )
));

$result = curl_exec($ch);
echo $result;

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

Golang

package main

import (
	"crypto/tls"
	"fmt"
	"io/ioutil"
	"net/http"
	"net/url"
)

func main() {
	const Username = "YOUR_USERNAME"
	const Password = "YOUR_PASSWORD"

	proxyUrl, _ := url.Parse(
		fmt.Sprintf(
			"https://%s:[e-mail]:60000",
			Username,
			Password,
		),
	)
	customTransport := &http.Transport{Proxy: http.ProxyURL(proxyUrl)}

	// We recommend accepting our certificate instead of allowing insecure (http) traffic
	customTransport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}

	client := &http.Client{Transport: customTransport}
	request, _ := http.NewRequest("GET",
		"https://ip.oxylabs.io/location",
		nil,
	)
	
	// Add custom cookies
        request.Header.Add("X-Oxylabs-Render", "html")
        
	request.SetBasicAuth(Username, Password)
	response, _ := client.Do(request)

	responseText, _ := ioutil.ReadAll(response.Body)
	fmt.Println(string(responseText))
}

C#

using System;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;

namespace OxyApi
{
    class Program
    {
        static async Task Main(string[] args)
        {
            var webProxy = new WebProxy
            {
                Address = new Uri("https://unblock.oxylabs.io:60000"),
                BypassProxyOnLocal = false,
                UseDefaultCredentials = false,

                Credentials = new NetworkCredential(
                userName: "YOUR_USERNAME",
                password: "YOUR_PASSWORD"
                )
            };

            var httpClientHandler = new HttpClientHandler
            {
                Proxy = webProxy,
            };

            // We recommend accepting our certificate instead of allowing insecure (http) traffic
            httpClientHandler.ClientCertificateOptions = ClientCertificateOption.Manual;
            httpClientHandler.ServerCertificateCustomValidationCallback =
                (httpRequestMessage, cert, cetChain, policyErrors) =>
                {
                    return true;
                };


            var client = new HttpClient(handler: httpClientHandler, disposeHandler: true);
            
            // Add custom cookies
            client.DefaultRequestHeaders.Add("X-Oxylabs-Render", "html");
            
            Uri baseUri = new Uri("https://ip.oxylabs.io/location");
            client.BaseAddress = baseUri;

            var requestMessage = new HttpRequestMessage(HttpMethod.Get, "");

            var response = await client.SendAsync(requestMessage);
            var contents = await response.Content.ReadAsStringAsync();

            Console.WriteLine(contents);
        }
    }
}

Java

package org.example;

import org.apache.hc.client5.http.auth.AuthScope;
import org.apache.hc.client5.http.auth.CredentialsProvider;
import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.config.RequestConfig;
import org.apache.hc.client5.http.impl.auth.CredentialsProviderBuilder;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManagerBuilder;
import org.apache.hc.client5.http.ssl.NoopHostnameVerifier;
import org.apache.hc.client5.http.ssl.SSLConnectionSocketFactoryBuilder;
import org.apache.hc.client5.http.ssl.TrustAllStrategy;
import org.apache.hc.core5.http.HttpHost;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.apache.hc.core5.http.message.StatusLine;
import org.apache.hc.core5.ssl.SSLContextBuilder;

import java.util.Arrays;
import java.util.Properties;


public class Main {

    public static void main(final String[] args)throws Exception {
        final CredentialsProvider credsProvider = CredentialsProviderBuilder.create()
                .add(new AuthScope("unblock.oxylabs.io", 60000), "USERNAME", "PASSWORD".toCharArray())
                .build();
        final HttpHost target = new HttpHost("https", "ip.oxylabs.io", 443);
        final HttpHost proxy = new HttpHost("https", "unblock.oxylabs.io", 60000);
        try (final CloseableHttpClient httpclient = HttpClients.custom()
                .setDefaultCredentialsProvider(credsProvider)
                .setProxy(proxy)
                // We recommend accepting our certificate instead of allowing insecure (http) traffic
                .setConnectionManager(PoolingHttpClientConnectionManagerBuilder.create()
                        .setSSLSocketFactory(SSLConnectionSocketFactoryBuilder.create()
                                .setSslContext(SSLContextBuilder.create()
                                        .loadTrustMaterial(TrustAllStrategy.INSTANCE)
                                        .build())
                                .setHostnameVerifier(NoopHostnameVerifier.INSTANCE)
                                .build())
                        .build())
                .build()) {

            final RequestConfig config = RequestConfig.custom()
                    .build();
            final HttpGet request = new HttpGet("/location");
            request.addHeader("X-Oxylabs-Render","html");
            request.setConfig(config);

            System.out.println("Executing request " + request.getMethod() + " " + request.getUri() +
                    " via " + proxy + " headers: " + Arrays.toString(request.getHeaders()));

            httpclient.execute(target, request, response -> {
                System.out.println("----------------------------------------");
                System.out.println(request + "->" + new StatusLine(response));
                EntityUtils.consume(response.getEntity());
                return null;
            });
        }
    }
}

Extracción del HTML de un sitio web

En este ejemplo, renderizaremos la página de inicio de YouTube y extraeremos el contenido de la página. Normalmente, la página de inicio de YouTube se vería así si se usa Web Unblocker sin renderizado de JavaScript:

Ejemplo de página de YouTube sin renderizado de JavaScript

Agregando el "X-Oxylabs-Render: html" encabezado, como se muestra en los ejemplos a continuación, habilitará el renderizado de JavaScript y devolverá el HTML de una página renderizada:

cURL

curl -k -v -x https://unblock.oxylabs.io:60000 \
-U 'USERNAME:PASSWORD' \
'https://youtube.com' \
-H 'X-Oxylabs-Render: html'

Python

import requests

# Use your Web Unblocker credentials here.
USERNAME, PASSWORD = 'YOUR_USERNAME', 'YOUR_PASSWORD'

# Define proxy dict.
proxies = {
  'http': f'http://{USERNAME}:{PASSWORD}@unblock.oxylabs.io:60000',
  'https': f'https://{USERNAME}:{PASSWORD}@unblock.oxylabs.io:60000',
}

headers = {
    'X-Oxylabs-Render': 'html'
}

response = requests.get(
    'https://youtube.com',
    verify=False,  # It is required to ignore certificate
    proxies=proxies,
    headers=headers,
)

# Print result page to stdout
print(response.text)

# Save returned HTML to result.html file
with open('result.html', 'w') as f:
    f.write(response.text)

Node.js

import fetch from 'node-fetch';
import { HttpsProxyAgent } from 'https-proxy-agent';

const username = 'YOUR_USERNAME';
const password = 'YOUR_PASSWORD';

const agent = new HttpsProxyAgent(
  `https://${username}:${password}@unblock.oxylabs.io:60000`
);

// We recommend accepting our certificate instead of allowing insecure (http) traffic
process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = 0;

const headers = {
   'X-Oxylabs-Render': 'html',
}

const response = await fetch('https://youtube.com', {
  method: 'get',
  headers: headers,
  agent: agent,
});

console.log(await response.text());

PHP

<?php
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://youtube.com');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_PROXY, 'https://unblock.oxylabs.io:60000');
curl_setopt($ch, CURLOPT_PROXYUSERPWD, 'YOUR_USERNAME' . ':' . 'YOUR_PASSWORD');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);

curl_setopt_array($ch, [
    CURLOPT_HTTPHEADER  => [
        'X-Oxylabs-Render: html'
    ]
]);

$result = curl_exec($ch);
echo $result;

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

Golang

package main

import (
	"crypto/tls"
	"fmt"
	"io/ioutil"
	"net/http"
	"net/url"
)

func main() {
	const Username = "YOUR_USERNAME"
	const Password = "YOUR_PASSWORD"

	proxyUrl, _ := url.Parse(
		fmt.Sprintf(
			"https://%s:[e-mail]:60000",
			Username,
			Password,
		),
	)
	customTransport := &http.Transport{Proxy: http.ProxyURL(proxyUrl)}

	// We recommend accepting our certificate instead of allowing insecure (http) traffic
	customTransport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}

	client := &http.Client{Transport: customTransport}
	request, _ := http.NewRequest("GET",
		"https://youtube.com",
		nil,
	)
	
	// Add custom cookies
        request.Header.Add("X-Oxylabs-Render", "html")
        
	request.SetBasicAuth(Username, Password)
	response, _ := client.Do(request)

	responseText, _ := ioutil.ReadAll(response.Body)
	fmt.Println(string(responseText))
}

C#

using System;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;

namespace OxyApi
{
    class Program
    {
        static async Task Main(string[] args)
        {
            var webProxy = new WebProxy
            {
                Address = new Uri("https://unblock.oxylabs.io:60000"),
                BypassProxyOnLocal = false,
                UseDefaultCredentials = false,

                Credentials = new NetworkCredential(
                userName: "YOUR_USERNAME",
                password: "YOUR_PASSWORD"
                )
            };

            var httpClientHandler = new HttpClientHandler
            {
                Proxy = webProxy,
            };

            // We recommend accepting our certificate instead of allowing insecure (http) traffic
            httpClientHandler.ClientCertificateOptions = ClientCertificateOption.Manual;
            httpClientHandler.ServerCertificateCustomValidationCallback =
                (httpRequestMessage, cert, cetChain, policyErrors) =>
                {
                    return true;
                };


            var client = new HttpClient(handler: httpClientHandler, disposeHandler: true);
            
            // Add custom header
            client.DefaultRequestHeaders.Add("X-Oxylabs-Render", "html");
            
            Uri baseUri = new Uri("https://youtube.com");
            client.BaseAddress = baseUri;

            var requestMessage = new HttpRequestMessage(HttpMethod.Get, "");

            var response = await client.SendAsync(requestMessage);
            var contents = await response.Content.ReadAsStringAsync();

            Console.WriteLine(contents);
        }
    }
}

Java

package org.example;

import org.apache.hc.client5.http.auth.AuthScope;
import org.apache.hc.client5.http.auth.CredentialsProvider;
import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.config.RequestConfig;
import org.apache.hc.client5.http.impl.auth.CredentialsProviderBuilder;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManagerBuilder;
import org.apache.hc.client5.http.ssl.NoopHostnameVerifier;
import org.apache.hc.client5.http.ssl.SSLConnectionSocketFactoryBuilder;
import org.apache.hc.client5.http.ssl.TrustAllStrategy;
import org.apache.hc.core5.http.HttpHost;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.apache.hc.core5.http.message.StatusLine;
import org.apache.hc.core5.ssl.SSLContextBuilder;

import java.util.Arrays;
import java.util.Properties;


public class Main {

    public static void main(final String[] args)throws Exception {
        final CredentialsProvider credsProvider = CredentialsProviderBuilder.create()
                .add(new AuthScope("unblock.oxylabs.io", 60000), "USERNAME", "PASSWORD".toCharArray())
                .build();
        final HttpHost target = new HttpHost("https", "youtube.com", 443);
        final HttpHost proxy = new HttpHost("https", "unblock.oxylabs.io", 60000);
        try (final CloseableHttpClient httpclient = HttpClients.custom()
                .setDefaultCredentialsProvider(credsProvider)
                .setProxy(proxy)
                // We recommend accepting our certificate instead of allowing insecure (http) traffic
                .setConnectionManager(PoolingHttpClientConnectionManagerBuilder.create()
                        .setSSLSocketFactory(SSLConnectionSocketFactoryBuilder.create()
                                .setSslContext(SSLContextBuilder.create()
                                        .loadTrustMaterial(TrustAllStrategy.INSTANCE)
                                        .build())
                                .setHostnameVerifier(NoopHostnameVerifier.INSTANCE)
                                .build())
                        .build())
                .build()) {

            final RequestConfig config = RequestConfig.custom()
                    .build();
            final HttpGet request = new HttpGet("/");
            request.addHeader("X-Oxylabs-Render","html");
            request.setConfig(config);

            System.out.println("Executing request " + request.getMethod() + " " + request.getUri() +
                    " via " + proxy + " headers: " + Arrays.toString(request.getHeaders()));

            httpclient.execute(target, request, response -> {
                System.out.println("----------------------------------------");
                System.out.println(request + "->" + new StatusLine(response));
                EntityUtils.consume(response.getEntity());
                return null;
            });
        }
    }
}

El archivo HTML abierto en un navegador debería verse así:

Obtener una captura de pantalla de una página totalmente renderizada

Para obtener una captura de pantalla en formato PNG en lugar del HTML de la página, es necesario proporcionar el "X-Oxylabs-Render: png" encabezado.

cURL

curl -k -v -x https://unblock.oxylabs.io:60000 \
-U 'USERNAME:PASSWORD' \
'https://youtube.com' \
-H 'X-Oxylabs-Render: png' > rendered_page.png

Python

import requests

# Use your Web Unblocker credentials here.
USERNAME, PASSWORD = 'YOUR_USERNAME', 'YOUR_PASSWORD'

# Define proxy dict.
proxies = {
  'http': f'http://{USERNAME}:{PASSWORD}@unblock.oxylabs.io:60000',
  'https': f'https://{USERNAME}:{PASSWORD}@unblock.oxylabs.io:60000',
}

headers = {
    'X-Oxylabs-Render': 'png'
}

response = requests.get(
    'https://youtube.com',
    verify=False,  # It is required to ignore certificate
    proxies=proxies,
    headers=headers,
)

# Save screeenshot as PNG file
with open('rendered_page.png', 'wb') as f:
  f.write(response.content)

Node.js

import fs from 'fs';
import fetch from 'node-fetch';
import { HttpsProxyAgent } from 'https-proxy-agent';

const username = 'YOUR_USERNAME';
const password = 'YOUR_PASSWORD';

const agent = new HttpsProxyAgent(
  `https://${username}:${password}@unblock.oxylabs.io:60000`
);

// We recommend accepting our certificate instead of allowing insecure (http) traffic
process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = 0;

const headers = {
   'X-Oxylabs-Render': 'png',
}

await fetch('https://youtube.com', {
  method: 'get',
  headers: headers,
  agent: agent,
}).then(res => 
  res.body.pipe(fs.createWriteStream('./rendered_page.png'))
  );

console.log('Image was saved');

PHP

<?php
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://youtube.com');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_PROXY, 'https://unblock.oxylabs.io:60000');
curl_setopt($ch, CURLOPT_PROXYUSERPWD, 'YOUR_USERNAME' . ':' . 'YOUR_PASSWORD');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);

curl_setopt_array($ch, [
    CURLOPT_HTTPHEADER  => [
        'X-Oxylabs-Render: png'
    ]
]);

$result = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close ($ch);

if(file_exists('rendered_page.png')){
    unlink('rendered_page.png');
}
$fp = fopen('rendered_page.png','wb');
fwrite($fp, $result);
fclose($fp);

Golang

package main

import (
	"crypto/tls"
	"fmt"
	"io/ioutil"
	"net/http"
	"net/url"
)

func main() {
	const Username = "YOUR_USERNAME"
	const Password = "YOUR_PASSWORD"

	proxyUrl, _ := url.Parse(
		fmt.Sprintf(
			"https://%s:[e-mail]:60000",
			Username,
			Password,
		),
	)
	customTransport := &http.Transport{Proxy: http.ProxyURL(proxyUrl)}

	// We recommend accepting our certificate instead of allowing insecure (http) traffic
	customTransport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}

	client := &http.Client{Transport: customTransport}
	request, _ := http.NewRequest("GET",
		"https://youtube.com",
		nil,
	)
	
	// Add custom cookies
        request.Header.Add("X-Oxylabs-Render", "png")
        
	request.SetBasicAuth(Username, Password)
	response, _ := client.Do(request)
	
	responseData, _ := ioutil.ReadAll(response.Body)
	response.Body.Close()
	ioutil.WriteFile("rendered_page.png", responseData, 0666)

	log.Println("Image was saved")
}

C#

using System;
using System.Net;
using System.Net.Http;
using System.Drawing;
using System.IO;
using System.Threading.Tasks;

namespace OxyApi
{
    class Program
    {
        static async Task Main(string[] args)
        {
            var webProxy = new WebProxy
            {
                Address = new Uri("https://unblock.oxylabs.io:60000"),
                BypassProxyOnLocal = false,
                UseDefaultCredentials = false,

                Credentials = new NetworkCredential(
                userName: "YOUR_USERNAME",
                password: "YOUR_PASSWORD"
                )
            };

            var httpClientHandler = new HttpClientHandler
            {
                Proxy = webProxy,
            };

            // We recommend accepting our certificate instead of allowing insecure (http) traffic
            httpClientHandler.ClientCertificateOptions = ClientCertificateOption.Manual;
            httpClientHandler.ServerCertificateCustomValidationCallback =
                (httpRequestMessage, cert, cetChain, policyErrors) =>
                {
                    return true;
                };


            var client = new HttpClient(handler: httpClientHandler, disposeHandler: true);
            
            // Add custom header
            client.DefaultRequestHeaders.Add("X-Oxylabs-Render", "png");
            
            Uri baseUri = new Uri("https://youtube.com");
            client.BaseAddress = baseUri;

            var requestMessage = new HttpRequestMessage(HttpMethod.Get, "");

            var response = await client.SendAsync(requestMessage);
            byte[] bytes = await response.Content.ReadAsByteArrayAsync();

            using (Image image = Image.FromStream(new MemoryStream(bytes)))
            {
                image.Save("rendered_page.png");
            }
        }
    }
}

Java

package org.example;

import okhttp3.Authenticator;
import okhttp3.Credentials;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import javax.net.ssl.*;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.util.concurrent.TimeUnit;
import java.io.File;
import org.apache.commons.io.FileUtils;

public class App implements Runnable
{
    private static final String AUTHORIZATION_HEADER = "Proxy-Authorization";
    public static final String USERNAME = "YOUR_USERNAME";
    public static final String PASSWORD = "YOUR_PASSWORD";

    public void run() {
        Authenticator authenticator = (route, response) -> {
            String credential = Credentials.basic(USERNAME, PASSWORD);

            return response
                    .request()
                    .newBuilder()
                    .header(AUTHORIZATION_HEADER, credential)
                    .build();
        };

        OkHttpClient.Builder builder = new OkHttpClient.Builder()
                .readTimeout(180, TimeUnit.SECONDS)
                .writeTimeout(180, TimeUnit.SECONDS);

        // We recommend accepting our certificate instead of allowing insecure (http) traffic
        this.disableSSLCertificateChecking(builder);

        Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("unblock.oxylabs.io", 60000));
        OkHttpClient client = builder
                .proxy(proxy)
                .proxyAuthenticator(authenticator)
                .build();

        var request = new Request.Builder()
                .url("https://youtube.com")
                .addHeader("X-Oxylabs-Render", "png")
                .get()
                .build();

        try (var response = client.newCall(request).execute()) {
            assert response.body() != null;
            okhttp3.ResponseBody body = response.body();
            if (body != null) {
                byte[] bytes = body.bytes();
                FileUtils.writeByteArrayToFile(new File("rendered_page.png"), bytes);
            }
        } catch (Exception exception) {
            exception.printStackTrace();
            System.exit(1);
        }

        System.exit(0);
    }

    private void disableSSLCertificateChecking(OkHttpClient.Builder builder) {
        TrustManager[] trustManagers = new TrustManager[]{
                new X509TrustManager() {
                    @Override
                    public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                        return new java.security.cert.X509Certificate[]{};
                    }

                    @Override
                    public void checkServerTrusted(java.security.cert.X509Certificate[] x509Certificates, String authType) {
                    }

                    @Override
                    public void checkClientTrusted(java.security.cert.X509Certificate[] x509Certificates, String authType) {
                    }
                }
        };

        try {
            HttpsURLConnection.setDefaultHostnameVerifier((s, sslSession) -> true);
            SSLContext sslContext = SSLContext.getInstance("TLS");
            sslContext.init(null, trustManagers, new java.security.SecureRandom());
            HttpsURLConnection.setDefaultSSLSocketFactory(sslContext.getSocketFactory());

            builder.sslSocketFactory(sslContext.getSocketFactory(), (X509TrustManager) trustManagers[0]);
        } catch (Exception exception) {
            exception.printStackTrace();
            System.exit(1);
        }

        builder.hostnameVerifier((hostname, session) -> true);
    }

    public static void main(String[] args) {
        new Thread(new App()).start();
    }
}

La respuesta contendrá bytes sin procesar de una imagen que se pueden guardar en formato PNG y abrir como en el ejemplo a continuación:

Ejemplo de página de YouTube como captura de pantalla en formato PNG

Forzar el renderizado en páginas específicas

Para una extracción exitosa, algunos tipos de página de dominios específicos requieren renderizado debido a su contenido dinámico. Nuestro sistema aplica automáticamente el renderizado para estas páginas, incluso si el usuario no lo establece explícitamente.

Ten en cuenta que los trabajos renderizados consumen más tráfico que los no renderizados.

Queremos que nuestros usuarios sean plenamente conscientes de esto al extraer las siguientes páginas:

Force render domains.csv

6KB

Abrir

Este enfoque proporciona la mejor experiencia de extracción posible, garantizando la precisión y confiabilidad de los datos de estas páginas difíciles.

Si desea deshabilitar el renderizado, envíe el encabezado de renderizado sin un valor

X-oxylabs-render: