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ReviewsCrawler.java
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ReviewsCrawler.java
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/**
* Google Play Store Crawler
* @Author1 Rakesh Reddy
* @Author2 Mandar Darwatkar
* @Institution University of California, Riverside
* @Date 11/06/2015
* @Input seed - seed URL
*
* @Output
*/
package Parser;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
public class ReviewsCrawler implements Runnable{
int timeout = 20000;
static String userAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.95 Safari/537.11";
String seed = "";
String output_directory = "";
String logfile = "";
String homeURL = "https://play.google.com";
int cycle = 2, seedID = 1;
//private Map<String, Boolean> urlqueue = new ConcurrentHashMap<String, Boolean>();
public ReviewsCrawler() {}
public ReviewsCrawler(String seed) {
this.seed = seed;
createDir("crawledreviewsfiles");
this.logfile = output_directory + "/logfile";
}
public void run() {
getAppPage();
}
public void getAppPage() {
Connection conn = null;
String url=null;
try{
//conn = DriverManager.getConnection("jdbc:mysql://localhost/playstore","root","");
conn=DriverManager.getConnection("jdbc:mysql://localhost/appstore?user=root&password=googleplay123");
Statement smt = conn.createStatement();
String query="SELECT * FROM appraw where review is null order by crawltime ";
ResultSet rs_url = smt.executeQuery( query );
while(rs_url.next()) {
url = rs_url.getString("app_url");
WebDriver driver = new FirefoxDriver();
JavascriptExecutor js = (JavascriptExecutor) driver;
driver.get(homeURL + url);
driver.manage().timeouts().pageLoadTimeout(10, TimeUnit.SECONDS);
WebElement expandButton = driver.findElement(By.className("expand-next"));
int count=0;
while(!expandButton.isEnabled()) {
Thread.sleep(100);
}
/*while(expandButton.isEnabled() && count<=10) {
Thread.sleep(10);
expandButton.click();
count++;
}*/
expandButton.click();
//Object buttonObject = js.executeScript("var elements = document.getElementsByTagName('button'); var len = elements.length; while(len--) {if(elements[len].className == 'content id-view-permissions-details fake-link'){ elements[len].click();}}");
//Thread.sleep(10000);
WebDriverWait wait = new WebDriverWait(driver, 10);
wait.until(ExpectedConditions.visibilityOfElementLocated(By.className("expand-pages-container")));
Object docObject = js.executeScript("return document.getElementsByTagName('html')[0].innerHTML");
String docum = docObject.toString();
Document doc = Jsoup.parse(docum, "UTF-8");
int i=0;
while(i<doc.select("div[class=single-review]").size())
{
String authorName=null;
String authorID=null;
Date reviewDate=null;
Double reviewRating=null;
String reviewText=null;
Element s = doc.select("div[class=single-review]").get(i);
authorName=s.select("div[class=review-info]").select("span[class=author-name]").get(0).text();
System.out.println("Author Name: "+authorName);
Element devinfolnk=s.select("div[class=review-info]").select("span[class=author-name]").get(0);
String hrefs=devinfolnk.select("a").attr("href").trim();
if(hrefs.contains("id=")){
authorID=hrefs.split("id=")[1].trim();
}
else{
authorID=null;
}
String tempdate=s.select("div[class=review-info]").select("span[class=review-date]").get(0).text().replaceAll("[,]", "");
reviewDate = new SimpleDateFormat("MMM dd yyyy").parse(tempdate);
System.out.println("review Date : "+reviewDate);
String[] temp=s.select("div[class=review-info]").select("div[class=tiny-star star-rating-non-editable-container]").attr("aria-label").trim().split(" ");
reviewRating=Double.parseDouble(temp[1]);
System.out.println(reviewRating);
if(i<doc.select("div[class=review-text]").size()){
reviewText=doc.select("div[class=review-text]").get(i).text();
System.out.println(reviewText);
}
else if(i<doc.select("div[class=review-body]").size()){
reviewText=doc.select("div[class=review-body]").get(i).text();
System.out.println(reviewText);
}
PreparedStatement insertreview = conn.prepareStatement("INSERT appreview(app_id,rev_auth_name,review_date,review,ratingGiven,authorID) values (?, ?, ?,?,?,?)");
insertreview.setString(1, url.split("=")[1].trim());
insertreview.setString(2,authorName);
//insertreview.setString(3,reviewDate);
java.sql.Date sqlDate = new java.sql.Date(reviewDate.getTime());
insertreview.setDate(3,sqlDate );
insertreview.setString(4, reviewText);
insertreview.setDouble(5, reviewRating);
insertreview.setString(6,authorID);
insertreview.executeUpdate();
insertreview.close();
i++;
}
driver.close();
driver.quit();
//Document doc = Jsoup.connect(homeURL+url).userAgent(userAgent).timeout(timeout).get();
PreparedStatement updatereview=conn.prepareStatement("UPDATE `appraw` SET `review`=0 WHERE `appraw`.`app_url`=?");
updatereview.setString(1, url);
updatereview.executeUpdate();
updatereview.close();
System.out.println(url);
String ouputfilename = getTime() + "_" + url.substring(url.indexOf("id=")+3);
BufferedWriter htmlfilewrite = new BufferedWriter(new FileWriter(output_directory+"/" + ouputfilename + ".html", true));
htmlfilewrite.append( docum );
htmlfilewrite.close();
writeLog(new Date() + " :: " + url, logfile);
}
smt.close();
conn.close();
return;
} catch(Exception e) {
e.printStackTrace();
try {
PreparedStatement updateFailure = conn.prepareStatement("UPDATE `appraw` SET `review`=1 WHERE `appraw`.`app_url`=?");
updateFailure.setString(1, url);
System.out.println("Failed URL :" + url);
updateFailure.executeUpdate();
updateFailure.close();
conn.close();
getAppPage();
} catch(Exception ex) {
ex.printStackTrace();
return;
}
}
}
public void createDir(String output_directory) {
this.output_directory = output_directory;
File file = new File(output_directory);
if ( !file.exists() ) {
file.mkdir();
}
}
public void writeLog(String logstr, String logfilepath) {
BufferedWriter log;
try {
log = new BufferedWriter(new FileWriter(logfilepath, true));
log.append(logstr);
log.newLine();
log.close();
} catch (IOException ioe) {
System.out.println("!!!!!an IOException happened while writing to log file");
ioe.printStackTrace();
return;
}
}
public String getTime() {
Date date = new Date();
DateFormat dateFormat = null;
dateFormat = new SimpleDateFormat("yyyy_MM_dd_HH_mm");
return dateFormat.format(date);
}
public static void main(String[] args) {
String seed = "https://play.google.com/store/apps/collection/topselling_free";
final int NTHREDS = 1;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
ExecutorService executor = Executors.newFixedThreadPool(NTHREDS);
executor.execute( new ReviewsCrawler( seed ) );
executor.shutdown();
}
catch(Exception ee) {
ee.printStackTrace();
//System.exit(1);
}
}
}