How to Choose Between Android SAX and org.xml.sax for XML Parsing?

XML Parsing with the SAX Parser

In this tutorial, we aim to build an XML parser that processes an RSS feed into an array of strings, rather than a single string.

Android SAX Implementation

Benefits:

• Easy to define XML structure using RootElement and Element objects.
• Follows a streamlined event-driven approach.

Example:

public class AndroidSAXExample {
    public Channel parse(InputStream is) {
        RootElement root = new RootElement("rss");
        Element chanElement = root.getChild("channel");

        // Process elements with listener methods
        chanElement.setStartElementListener(new StartElementListener() { ... });
        chanElement.setEndTextElementListener(new EndTextElementListener() { ... });

        // Parse input stream and return Channel object
        Xml.parse(is, Xml.Encoding.UTF_8, root.getContentHandler());
        return channel;
    }
}

org.xml.sax Implementation

Benefits:

• Greater flexibility as it listens for events without defining XML structure.
• Widely used and supported.

Example:

public class SAXExampleHandler extends DefaultHandler {
    @Override
    public void startElement(...) { ... }

    @Override
    public void endElement(...) { ... }

    @Override
    public void characters(...) { ... }

    @Override
    public void endDocument() { ... }
}

Comparison

Android SAX:

• Cleaner code with less repetition.
• Requires XML structure definition.
• Suitable for simpler XML structures.

org.xml.sax:

• Greater flexibility.
• Requires state tracking for complex XML structures.
• Suitable for more complex XML structures.

The choice between the two implementations depends on the complexity of your XML structure. For simpler structures, the Android SAX implementation is preferred. For more complex structures, the org.xml.sax implementation provides greater flexibility at the cost of additional coding complexity.

The above is the detailed content of How to Choose Between Android SAX and org.xml.sax for XML Parsing?. For more information, please follow other related articles on the PHP Chinese website!