* @param localName The local name (without prefix), or the
* empty string if Namespace processing is not being
* performed.
* @param qName The qualified name (with prefix), or the
* empty string if qualified names are not available.
the qName includes prefix but localName not.
* empty string if Namespace processing is not being
* performed.
* @param qName The qualified name (with prefix), or the
* empty string if qualified names are not available.
the qName includes prefix but localName not.
不包含namespace前缀String qName
包含namespace前缀有的时候一样是因为namespace是空的