LexicalHandler trigger startEntity method for entities in xml attributes

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I am trying to parse an xml file in Java.

For project purposes, I may not convert predefined xml entities to their character equivalent. So for example "&" may not be converted to "&".

To achieve this, I am using the SAX2 LexicalHandler which has the method "startEntity()". This method will be triggered each time the xml reader recognizes an xml entity. In the "characters()" method I have my custom code to avoid the conversion of the entities to their character equivalent.

So far so good, but now I am facing the following problem: The "startEntity()" method is not triggered for xml entities that occur in attribute values of my xml file. For example, if I have the following in my xml:

<website link="http://localhost?action=accept&amp;token=b600f4c2">

The "&"in the link atribute is not recognized as an entity by the "startEntity()" method. As a result it will be converted to "&", what I do not want.

Can anybody help me out of this problem please? Please find below the complete code of my LexicalHandler:

public class XMLFilterEntityImpl extends XMLFilterImpl implements LexicalHandler
{

    private String currentEntity = null;

    public XMLFilterEntityImpl(XMLReader reader) throws SAXNotRecognizedException, SAXNotSupportedException
    {
        super(reader);
        setProperty("http://ift.tt/PQ61GE", this);
    }

    @Override
    public void characters(char[] ch, int start, int length) throws SAXException
    {
        if (currentEntity == null || currentEntity.startsWith("%"))
        {
            super.characters(ch, start, length);
            return;
        }

        String entity = "&" + currentEntity + ";";
        super.characters(entity.toCharArray(), 0, entity.length());
        currentEntity = null;
    }

    @Override
    public void startEntity(String name) throws SAXException
    {
        currentEntity = name;
    }

    @Override
    public void endEntity(String name) throws SAXException
    {
    }

    @Override
    public void startDTD(String name, String publicId, String systemId) throws SAXException
    {
    }

    @Override
    public void endDTD() throws SAXException
    {
    }

    @Override
    public void startCDATA() throws SAXException
    {
    }

    @Override
    public void endCDATA() throws SAXException
    {
    }

    @Override
    public void comment(char[] ch, int start, int length) throws SAXException
    {
    }
}

Thanks in advance!!!

asked 1 min ago

Daniel Ananthan

1

LexicalHandler trigger startEntity method for entities in xml attributes