Daisy HTML Cleaner Framework Java Class Library Frequently Asked Questions Questions Answers
Daisy HTML Cleaner Framework Java Class Library Frequently Asked Questions Questions Answers
Daisy HTML Cleaner is a Java class library for cleaning up and formatting HTML documents.It can help developers handle HTML content easily, remove useless labels, styles and scripts, and make HTML more clean and easy to read.When using the Daisy HTML Cleaner framework, some common problems may occur.This article will introduce these questions and provide corresponding answers and Java code examples.
Question 1: How to use DAISY HTML Cleaner to clean up HTML documents?
Answer: First of all, we need to download and import the Daisy HTML Cleaner library through Maven or manually.Then, you can use the following code example to clean the HTML document:
import org.daisy.htmlcleaner.HtmlCleaner;
import org.daisy.htmlcleaner.SimpleHtmlSerializer;
import org.daisy.htmlcleaner.TagNode;
public class HTMLCleanerExample {
public static void main(String[] args) throws Exception {
// Create HTMLCLEANER instance
HtmlCleaner cleaner = new HtmlCleaner();
// Read the html document
TagNode node = cleaner.clean(new File("input.html"), "UTF-8");
// Create an instance of HTMLSERIALIZER, for serialized HTML documents
SimpleHtmlSerializer serializer = new SimpleHtmlSerializer(cleaner.getProperties());
// Clean up the html document and output the result
String cleanedHtml = serializer.getAsString(node);
System.out.println(cleanedHtml);
}
}
The above code examples use the `htmlcleaner` class and` simplehtmlserializer`.First, create an instance of the `htmlcleaner` and load the HTML document to be cleaned up.Then, create an instance of the `SimplehtmlSerializer`, and use the` Getasstring () method to convert the cleaned HTML document into a string.Finally, output the cleaned HTML document to the console.
Question 2: How to filter the specified HTML label?
Answer: Daisy HTML Cleaner provides the function of filtering HTML tags.It can be implemented using a configuration file that contains to keep the label and to delete the label.The following is an example code, which is used to filter the specified HTML tag:
import org.daisy.htmlcleaner.HtmlCleaner;
import org.daisy.htmlcleaner.SimpleHtmlSerializer;
import org.daisy.htmlcleaner.TagNode;
import org.daisy.htmlcleaner.TagNodeFilter;
public class HTMLFilterExample {
public static void main(String[] args) throws Exception {
// Create HTMLCLEANER instance
HtmlCleaner cleaner = new HtmlCleaner();
// Read the html document
TagNode node = cleaner.clean(new File("input.html"), "UTF-8");
// Create an instance of HTMLSERIALIZER, for serialized HTML documents
SimpleHtmlSerializer serializer = new SimpleHtmlSerializer(cleaner.getProperties());
// Filter the specified html tag
TagNodeFilter filter = new TagNodeFilter() {
@Override
public boolean accept(TagNode tagNode) {
Return! tagnode.getName (). EqualSignorecase ("script"); // filter out the script tag
}
};
// Apply a filter
node = cleaner.clean(node, filter);
// Clean up the html document and output the result
String filteredHtml = serializer.getAsString(node);
System.out.println(filteredHtml);
}
}
The above code example creates a `tagnodefilter` filter, which defines the label to be filtered in the filter (here is an example of deleting the` script` tag).Then apply the filter to the HTML document and use the `Getasstring () method to output the results.
Question 3: How to deal with the righteousness of HTML special characters?
Answer: Daisy HTML CLEANER automatically handle the rotation of HTML special characters.When cleaning up HTML documents, it will ensure that special characters are correctly righteous.The following is a sample code that demonstrates how to use Daisy HTML Cleaner to process the transposition of HTML special characters:
import org.daisy.htmlcleaner.HtmlCleaner;
import org.daisy.htmlcleaner.SimpleHtmlSerializer;
import org.daisy.htmlcleaner.TagNode;
public class HTMLEscapeExample {
public static void main(String[] args) throws Exception {
// Create HTMLCLEANER instance
HtmlCleaner cleaner = new HtmlCleaner();
// Read the html document
TagNode node = cleaner.clean(new File("input.html"), "UTF-8");
// Create HTMLSERIALIZER instance, and set the transfer option to true
SimpleHtmlSerializer serializer = new SimpleHtmlSerializer(cleaner.getProperties());
serializer.setEscapeUnicode(true);
// Clean up the html document and output the result
String cleanedHtml = serializer.getAsString(node);
System.out.println(cleanedHtml);
}
}
In the above code example, we created a `SimplehtmlSerializer` instance, and use the` SeteScapeUnicode () method to set the rigid option to ensure the correct righteousness of special characters.
Summarize:
The Daisy HTML Cleaner framework provides convenient functions to help developers clean up and format HTML documents.This article provides answers to some common questions and gives the corresponding Java code example.By using the DAISY HTML Cleaner class library, developers can easily handle HTML content to reduce invalid labels and unnecessary styles and scripts, so that the HTML document is cleaner and easy to read.
