In this example we will use an HTML Parser, Jsoup, in order to download images from a website.
jsoup is a Java library for working with real-world HTML. It provides a very convenient API for extracting and manipulating data, using the best of DOM, CSS, and jquery-like methods.
jsoup implements the WHATWG HTML5 specification, and parses HTML to the same DOM as modern browsers do.
In orderto get the src attributes of the <img> tags from a website. Then we download the file from the url we have aquired using a URL stream.
This code downloads images tha are directly accessible via URL. If they aren’t, an exception will be thrown.
package com.javacodegeeks.snippets.enterprise;
import java.io.*;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.io.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Attributes;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import java.io.IOException;
import java.net.URL;
public class DownloadImages {
//The url of the website. This is just an example
private static final String webSiteURL = "http://www.supercars.net/gallery/119513/2841/5.html";
//The path of the folder that you want to save the images to
private static final String folderPath = "<FOLDER PATH>";
public static void main(String[] args) {
try {
//Connect to the website and get the html
Document doc = Jsoup.connect(webSiteURL).get();
//Get all elements with img tag ,
Elements img = doc.getElementsByTag("img");
for (Element el : img) {
//for each element get the srs url
String src = el.absUrl("src");
System.out.println("Image Found!");
System.out.println("src attribute is : "+src);
getImages(src);
}
} catch (IOException ex) {
System.err.println("There was an error");
Logger.getLogger(DownloadImages.class.getName()).log(Level.SEVERE, null, ex);
}
}
private static void getImages(String src) throws IOException {
String folder = null;
//Exctract the name of the image from the src attribute
int indexname = src.lastIndexOf("/");
if (indexname == src.length()) {
src = src.substring(1, indexname);
}
indexname = src.lastIndexOf("/");
String name = src.substring(indexname, src.length());
System.out.println(name);
//Open a URL Stream
URL url = new URL(src);
InputStream in = url.openStream();
OutputStream out = new BufferedOutputStream(new FileOutputStream( folderPath+ name));
for (int b; (b = in.read()) != -1;) {
out.write(b);
}
out.close();
in.close();
}
}
This was an example of how to download images from a website using Jsoup.
