Jsoup Tutorial
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jsoup - Using Selector Syntax
jsoup - Using Selector Syntax
Following example will showcase use of selector methods after parsing an HTML String into a Document object. jsoup supports selectors similar to CSS Selectors.
Syntax
Document document = Jsoup.parse(html);
Element sampleDiv = document.getElementById("sampleDiv");
Elements pnks = sampleDiv.getElementsByTag("a");
Where
document − document object represents the HTML DOM.
Jsoup − main class to parse the given HTML String.
html − HTML String.
sampleDiv − Element object represent the html node element identified by id "sampleDiv".
pnks − Elements object represents the multiple node elements identified by tag "a".
Description
The document.select(expression) method parses the given CSS selector expression to select a html dom element.
Example
Create the following java program using any editor of your choice in say C:/> jsoup.
JsoupTester.java
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
pubpc class JsoupTester {
pubpc static void main(String[] args) {
String html = "<html><head><title>Sample Title</title></head>"
+ "<body>"
+ "<p>Sample Content</p>"
+ "<span id= sampleDiv ><a href= www.google.com >Google</a>"
+ "<h3><a>Sample</a><h3>"
+"</span>"
+ "<span id= imageDiv class= header ><img name= google src= google.png />"
+ "<img name= yahoo src= yahoo.jpg />"
+"</span>"
+"</body></html>";
Document document = Jsoup.parse(html);
//a with href
Elements pnks = document.select("a[href]");
for (Element pnk : pnks) {
System.out.println("Href: " + pnk.attr("href"));
System.out.println("Text: " + pnk.text());
}
// img with src ending .png
Elements pngs = document.select("img[src$=.png]");
for (Element png : pngs) {
System.out.println("Name: " + png.attr("name"));
}
// span with class=header
Element headerDiv = document.select("span.header").first();
System.out.println("Id: " + headerDiv.id());
// direct a after h3
Elements sampleLinks = document.select("h3 > a");
for (Element pnk : sampleLinks) {
System.out.println("Text: " + pnk.text());
}
}
}
Verify the result
Compile the class using javac compiler as follows:
C:jsoup>javac JsoupTester.java
Now run the JsoupTester to see the result.
C:jsoup>java JsoupTester
See the result.
Href: www.google.com Text: Google Name: google Id: imageDiv Text: SampleAdvertisements