Bot untuk download hasil scan formulir c1 pilpres 2019 milik KPU (pemilu2019.kpu.go.id)

Main2.java

package com.edw.situng;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 *
 * @author Muhammad Edwin < edwinkun at gmail dot com >
 * 19 May 2019 12:54
 */
public class Main2 {

    private String kdProv = "14086";
    private String kdKab = "14630";
    private String kdKec = "930145";
    private String kdKel = "14676";
    private String kdTps = "900075432";

    public static void main(String[] args) throws Exception {
        new Main2().crawlAndDoCapture();
    }

    public Main2(){
    }

    /**
     * lets rock and roll
     *
     * @throws Exception
     */
    private void crawlAndDoCapture() throws Exception {
        // count time needed
        Long start = System.currentTimeMillis();

        // crawl images name and location
        String url = String.format("https://pemilu2019.kpu.go.id/static/json/hhcw/ppwp/%s/%s/%s/%s/%s.json",
                                                                                                        kdProv,
                                                                                                        kdKab,
                                                                                                        kdKec,
                                                                                                        kdKel,
                                                                                                        kdTps);
        OkHttpClient client = getOkHttpClient();
        Request request = new Request.Builder()
                                    .url(url)
                                    .build();
        Response response = client.newCall(request).execute();
        Map<String, Object> jsonResponse = new ObjectMapper().readValue(response.body().string(), Map.class);

        // get c1 lembar 1
        String c1ImageName = (String)((List) jsonResponse.get("images")).get(0);

        // fetch and download c1 forms
        String imageUrl = String.format("https://pemilu2019.kpu.go.id/img/c/%s/%s/%s/%s",
                                                                                    kdTps.substring(0, 3),
                                                                                    kdTps.substring(3, 6),
                                                                                    kdTps,
                                                                                    c1ImageName);
        String fileName = String.format("%s.%s.c1.png", new SimpleDateFormat("yyyyMMddHHmmss").format(new Date()), kdTps);
        request = new Request.Builder()
                .url(imageUrl)
                .build();
        response = client.newCall(request).execute();
        Files.copy(response.body().byteStream(), Paths.get("E:\\tmp\\"+fileName));

        // end
        Long end = System.currentTimeMillis();
        System.out.println("Time needed "+(end-start)+"ms");
    }

    /**
     * get instance of okhttp
     *
     * @return instance of OKHttpClients
     * @throws NoSuchAlgorithmException
     * @throws KeyManagementException
     */
    private OkHttpClient getOkHttpClient() throws NoSuchAlgorithmException, KeyManagementException {
        OkHttpClient client = new OkHttpClient();
        client.setSslSocketFactory(getSslContext().getSocketFactory());
        client.setConnectTimeout(200, TimeUnit.SECONDS);
        client.setReadTimeout(200, TimeUnit.SECONDS);
        return client;
    }

    /**
     * override kpu SSL issue
     *
     * @return instance of SSLContext
     * @throws NoSuchAlgorithmException
     * @throws KeyManagementException
     */
    private SSLContext getSslContext() throws NoSuchAlgorithmException, KeyManagementException {
        TrustManager[] trustAllCerts = new TrustManager[]{
                new X509TrustManager() {
                    public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                    }

                    public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                    }

                    public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                        return new java.security.cert.X509Certificate[]{};
                    }
                }
        };
        SSLContext sslContext = SSLContext.getInstance("SSL");
        sslContext.init(null, trustAllCerts, new java.security.SecureRandom());

        return sslContext;
    }

}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.edw.situng</groupId>
    <artifactId>Situng Capturer</artifactId>
    <version>1.0</version>

    <dependencies>
        <dependency>
            <groupId>org.seleniumhq.selenium</groupId>
            <artifactId>selenium-java</artifactId>
            <version>3.141.59</version>
        </dependency>
        <dependency>
            <groupId>org.seleniumhq.selenium</groupId>
            <artifactId>htmlunit-driver</artifactId>
            <version>2.33.2</version>
        </dependency>
        <dependency>
            <groupId>org.seleniumhq.selenium</groupId>
            <artifactId>selenium-firefox-driver</artifactId>
            <version>3.141.59</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-io</artifactId>
            <version>1.3.2</version>
        </dependency>
        <dependency>
            <groupId>com.squareup.okhttp</groupId>
            <artifactId>okhttp</artifactId>
            <version>2.7.5</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.9</version>
        </dependency>
    </dependencies>

</project>