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Copy pathCrawler.java
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315 lines (268 loc) · 10.2 KB
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import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Queue;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
public class Crawler extends Thread {
/**
*
*/
public static ConcurrentHashMap<String, Integer> Vis_URL = new ConcurrentHashMap<String, Integer>();
public static ConcurrentHashMap<String, String> Hashed_URL = new ConcurrentHashMap<String, String>();
public static Queue<String> To_Vis_URL = new ConcurrentLinkedQueue<String>();
public static ConcurrentHashMap<String, Integer> Ranking = new ConcurrentHashMap<String, Integer>();
public int maxdepth = 10;
public static int VisUrlSz = 0;
public static int cnt;
public Number statenum = 0;
public boolean flag = true;
public int time;
Crawler(int t) {
time = t;
}
public ConcurrentHashMap<String, Integer> GetHashRank (){
return Ranking;
}
public synchronized void Visited(String site) {
Vis_URL.put(site, 1);
}
public synchronized void SetHash(String site, Document doc) {
// Vis for Freq array
Elements e = doc.getElementsByTag("title");
String title = e.text();
e = doc.getElementsByTag("meta");
String meta = e.attr("content");
e = doc.getElementsByTag("a");
String a = e.text();
Hashed_URL.put(site, a + title + meta);
}
public synchronized void towrite(String site) {
try (BufferedWriter statefile = new BufferedWriter(new FileWriter("/home/mostafa/NetBeansProjects/WebApplication5/State", true))) {
statefile.write(site + "/");
statefile.newLine();
} catch (IOException e) {
System.out.println(e);
}
}
public synchronized boolean Check(String site) {
if (Vis_URL.get(site) == null) {
return true;
}
return false;
}
public synchronized void tovis(String site) {
if (Vis_URL.get(site) == null) {
To_Vis_URL.add(site);
}
Object o = Ranking.get(site);
if (o == null) {
Ranking.put(site,1);
return;
}
Ranking.put(site, (int)o +1);
}
public ConcurrentHashMap<String, Integer> GetRanking(){
return Ranking;
}
public void processPage(String URL_Link, int depth) throws InterruptedException, MalformedURLException {
if (VisUrlSz >= 900) {
System.out.println("ANA 5LST.. 25ern b2et farasha gamyleeeeh 2222!!");
return;
}
Visited(URL_Link);
try {
URL RobotURL = new URL(URL_Link);
String Host = "http://" + RobotURL.getHost();
//System.out.println("Host= " + Host);
// String temp1 = link.attr("abs:href");
try (BufferedReader in = new BufferedReader(
new InputStreamReader(new URL(Host + "/robots.txt").openStream()))) {//temp1 + "robots.txt
//System.out.println("B3d " + e.attr("abs:href"));
String line = null;
int tcnt = 1;
while ((line = in.readLine()) != null && ++tcnt < 50) {
if (line.startsWith("Disallow")) {
try (BufferedWriter rob = new BufferedWriter(
new FileWriter("/home/mostafa/NetBeansProjects/WebApplication5/robot", true))) {
String y = line.substring(9);
rob.write(y);
rob.newLine();
String Comp = Host;
if (y.length() > 3) {
String te = line.substring(10), te2 = "";
for (int i = 0; i < te.length(); i++) {
if (te.charAt(i) == '*') {
te2 += "(.*)";
} else {
te2 += te.charAt(i);
}
}
// System.out.println("teStre " + te + "// te2String " + te2);
// System.out.println(Host);
if (URL_Link.matches(te2)) {
System.out.println("msktk !!");
return;
}
}
} catch (IOException e1) {
System.out.println(e1);
}
}
}
} catch (IOException e1) {
System.out.println(e1);;
} catch (IllegalArgumentException ee) {
System.out.println(ee);
}
} catch (java.net.MalformedURLException e) {
System.out.println("Could not create URL !!");
}
// System .out.println(x);
if (URL_Link.endsWith("/")) {
URL_Link = URL_Link.substring(0, URL_Link.length() - 1);
}
Document doc = null;
try {
if (URL_Link == "") {
return;
}
doc = Jsoup.connect(URL_Link).get();
} catch (IOException e) {
System.out.println("Doc Not connected to " + URL_Link);
return;
}
System.out.println("D5l be " + URL_Link);
SetHash(URL_Link, doc);
towrite(URL_Link);
// HTML file
try (BufferedWriter file = new BufferedWriter(
new FileWriter("/home/mostafa/NetBeansProjects/WebApplication5/HTML/" + this.cnt++ + ".html", false))) {
file.write((doc.toString()));
VisUrlSz++;
} catch (IOException e) {
System.out.println(e);
}
Elements links = null;
try {
links = doc.body().getElementsByAttribute("href");
} catch (NullPointerException e) {
return;
}
if (links != null) {
for (Element link : links) {
tovis(link.attr("abs:href"));// In queue
}
}
//System.out.println("size abl: " + To_Vis_URL.size());
while (!To_Vis_URL.isEmpty() && (int) (System.currentTimeMillis() / 1000) < time) {
String site = To_Vis_URL.poll();
if (Check(site)) {
processPage(site, depth + 1);
}
}
System.out.println("ANA 5LST.. 25ern b2et farasha gamyleeeeh !!");
}
public void mainprocessPage(String URL, HashMap<String, Integer> Vis) {
if (!Vis.isEmpty()) {
Vis_URL.putAll(Vis);
}
int cnter = Vis.size();
if (cnter != 0) {
cnt = cnter;
} else if (!Vis_URL.isEmpty()) {
cnt = Vis_URL.size();
} else {
cnt = 0;
}
//System.out.println("Main Process Man cnt = " + cnt);
if (Hashed_URL.isEmpty()) {
Document doc = null;
try {
doc = Jsoup.connect(URL).get();
} catch (IOException e) {
System.out.println(e);
}
try (BufferedWriter file = new BufferedWriter(
new FileWriter("/home/mostafa/NetBeansProjects/WebApplication5/HTML/" + cnt++ + ".html", false))) {
file.write((doc.toString()));
VisUrlSz++;
} catch (IOException e) {
System.out.println(e);
}
Visited(URL);
SetHash(URL, doc);
towrite(URL);
Elements temp = doc.body().getElementsByAttribute("href");
for (Element e : temp) {
tovis(e.attr("abs:href"));
}
} else { // for freq
//System.out.println("d5l fy al else..");
String Lsite = "";
Iterator<?> it = Hashed_URL.entrySet().iterator();
while (it.hasNext()) {
Map.Entry pair = (Map.Entry) it.next();
String site = (String) pair.getKey();
String has = (String) pair.getValue();
Lsite = site;
Document doc = null;
try {
doc = Jsoup.connect(site).get();
} catch (IOException e) {
System.out.println(e);
}
//get meta + a + title
Elements e = doc.getElementsByTag("title");
String title = e.text();
e = doc.getElementsByTag("meta");
String meta = e.attr("content");
e = doc.getElementsByTag("a");
String a = e.text();
String temp = a + title + meta;
if (!has.equals(temp)) {
// System.out.println("has= " + has + "site= " + a + title);
// System.out.println("d5l fy to visit..2");
tovis(site);
Lsite = "";
} else {
System.out.println("Not changed!!");
}
}
if (!Lsite.isEmpty()) {
tovis(Lsite);
}
}
}
@Override
public void run() {
// System.out.println("cnt is: " + cnt);
while (!To_Vis_URL.isEmpty()) {
String site = To_Vis_URL.poll();
// System.out.println("Run ste is: " + site);
try {
processPage(site, 1);
break;
} catch (InterruptedException ex) {
Logger.getLogger(Crawler.class.getName()).log(Level.SEVERE, null, ex);
} catch (MalformedURLException ex) {
Logger.getLogger(Crawler.class.getName()).log(Level.SEVERE, null, ex);
}
}
// State file
}
}
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