Introduction to JODD LAGARTO framework in the Java class library
JODD LAGARTO is a Java -based HTML parsing and DOM operation framework, which provides a series of powerful tools and class libraries for handling HTML/XML documents.It aims to provide high performance and ease of use, and has a simple API design.
The main features of JODD LAGARTO include:
1. Fast and efficient: JODD LAGARTO uses a very fast streaming analysis technology that can quickly analyze large HTML/XML documents.It improves analysis efficiency by creating objects as little as possible, and reduces IO operations through buffer management.
2. Strict standard support: JODD LAGARTO implements strict HTML and XML standards, which can correctly analyze and verify these documents.It can handle incomplete documents and automatically repair common errors.
3. DOM operation: JODD LAGARTO provides a simple and powerful API that can easily traverse and operate the DOM tree.It can create, delete, modify and query elements, attributes and text nodes, as well as handling comments and CDATA sections.
4. Various analytical modes: JODD LAGARTO supports multiple analysis modes, including analysis of the entire document, analyzing specific labels or labels, and analysis of HTML fragments.This makes it very flexible and suitable for various scenarios.
The following is an example of using Jodd Lagarto to analyze HTML documents:
import jodd.lagarto.*;
import jodd.lagarto.dom.*;
public class HtmlParserExample {
public static void main(String[] args) {
String html = "<html><body><h1>Hello, Jodd Lagarto!</h1></body></html>";
LagartoParser lagartoParser = new LagartoParser(html);
Document lagartoDocument = lagartoParser.parse();
// Traversing DOM Tree
traverseTree(lagartoDocument.getRoot());
// Modify the DOM tree
Node h1Node = lagartoDocument.getHtml().getChild(0).getChild(0).getChild(0);
h1Node.setTextContent("Hello, World!");
// Generate modified html
HtmlRenderer htmlRenderer = new HtmlRenderer();
String modifiedHtml = htmlRenderer.toHtmlString(lagartoDocument);
System.out.println(modifiedHtml);
}
private static void traverseTree(Node node) {
if (node.getNodeType() == Node.NodeType.ELEMENT) {
Element element = (Element) node;
System.out.println("Element: " + element.getNodeName());
for (Attribute attribute : element.getAttributes()) {
System.out.println("Attribute: " + attribute.getName() + "=" + attribute.getValue());
}
} else if (node.getNodeType() == Node.NodeType.TEXT) {
Text text = (Text) node;
System.out.println("Text: " + text.getText());
}
for (Node child : node.getChildNodes()) {
traverseTree(child);
}
}
}
In the above example, we first created a Lagartoparser object and passed the HTML document to it for analysis.Then, we can traverse the DOM tree through the LagartODOCUMENT object and perform the corresponding operation.Finally, we use HTMLRENDERERER to generate the modified HTML.
In summary, Jodd Lagarto is a powerful and flexible HTML parsing and DOM operation framework. It provides Java developers with a simple and efficient way to handle HTML/XML documents.Whether it is analyzing the entire document or modifying specific nodes, JODD LAGARTO can meet your needs.
