Examples and tutorials of JODD LAGARTO framework
Examples and tutorials of JODD LAGARTO framework
Jodd Lagarto is a Java -based HTML parser and web crawle.It provides a set of simple and easy -to -use APIs that allow developers to quickly analyze and operate HTML documents.This article will introduce the basic usage of the JODD LAGARTO framework and provide some examples and corresponding Java code.
1. Introduce the JODD LAGARTO library
First, you need to introduce the Jodd Lagarto framework into your Java project.It can be implemented through Maven or manually downloading JODD LARTO's jar file.The following is an example of Maven dependencies:
<dependency>
<groupId>org.jodd</groupId>
<artifactId>jodd-lagarto</artifactId>
<version>5.0.2</version>
</dependency>
2. Analyze the HTML document
It is very simple to use the JODD LAGARTO framework to parse the HTML document.You only need to create a LagartodomBuilder instance, and then call its PARSE method.The following is a basic example:
import jodd.lagarto.*;
public class HtmlParserExample {
public static void main(String[] args) {
String html = "<html><body><h1>Hello, Jodd Lagarto!</h1></body></html>";
LagartoDOMBuilder lagartoDOMBuilder = new LagartoDOMBuilder();
Document document = lagartoDOMBuilder.parse(html);
System.out.println(document.getHtml());
}
}
In the above example, we created a LagartodomBuilder object and passed the HTML document to its PARSE method.We can then use the Document object to access the parsing HTML document.
3. Find and operate HTML elements
JODD LAGARTO also provides a set of API to find and operate HTML elements.You can use the selection of the syntax to select specific elements and use the Document or Element object to operate them.The following is an example:
import jodd.lagarto.*;
public class HtmlManipulationExample {
public static void main(String[] args) {
String html = "<html><body><h1>Hello, Jodd Lagarto!</h1></body></html>";
LagartoDOMBuilder lagartoDOMBuilder = new LagartoDOMBuilder();
Document document = lagartoDOMBuilder.parse(html);
Element h1 = document.findElement("h1");
String text = h1.getTextContent();
System.out.println(text);
}
}
In the above example, we use the Findelement method to find an H1 element and use the gettextContent method to obtain its text content.
In addition, Jodd Lagarto also supports the selection and operation of HTML elements through the CSS selector and XPath expressions. You can choose the appropriate way according to your needs.
Summarize
This article introduces the basic usage and examples of the JODD LAGARTO framework.You can use Jodd Lagarto to quickly analyze and operate HTML documents, and perform web page crawling tasks.Hope this article will help you!
