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1.°´Õý³£½âÎöxmlÎļþµÄ·½·¨£¬ÐèҪעÒ⼸µã£º
»ñÈ¡ÔªËØElement£¬²»¿ÉʹÓú¯Êý£ºdocument.selectNodes("//region");
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Element root = document.getRootElement();
Element ele = root.element("head");
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List ll = document.selectNodes("//@regionName");
  System.out.println("ll.size=" + ll.size());
2.ʹÓÃXPath¡£eg:
public void testHasNameSpace(File file) {
SAXReader saxReader = new SAXReader();
Document document = null;
// XmlDocument document=
try {
document = saxReader.read(file);
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
HashMap xmlMap = new HashMap();
xmlMap.put("smil", "http://www.w3.org/2000/SMIL20/CR/Language");
XPath x = document.createXPath("//smil:region");
x.setNamespaceURIs(xmlMap);
List regionList = x.selectNodes(document);
System.out.println("there are " + regionList.size() + " regions");
XPath att = document.createXPath("//smil:region/@regionName");
att.setNamespaceURIs(xmlMap);
List attrList = att.selectNodes(document);
System.out.println("there are " + attrList.size() + " attrs");
int i = 0;
Iterator it = attrList.iterator();
while (it.hasNext()) {
Attribute a = (Attribute) it.next();
System.out.println((i++) + "¸ö£º" + a.getValue());
}
}


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::CoInitialize(NULL);
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