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使用DOM处理XML NameSpace

技术2022-05-11  0


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book.xml

 

<? xml version="1.0" encoding="gb2312" ?> < bks:books  xmlns:bks ="http://www.books.org/books" >      < bks:book >          < bks:title > java </ bks:title >          < bks:author  xmlns ="http://www.books.org/people" >              < name > j2ee </ name >              < title > teacher </ title >          </ bks:author >      </ bks:book > </ bks:books >

测试程序:

 

package  DomNS; import  java.io.File; import  javax.xml.parsers.DocumentBuilder; import  javax.xml.parsers.DocumentBuilderFactory; import  org.w3c.dom.Document; import  org.w3c.dom.NamedNodeMap; import  org.w3c.dom.Node; public   class  DomNSTest  {    public static void printNSInfo(Node node){         short type=node.getNodeType();         switch(type){         case Node.ELEMENT_NODE:             if(node.getNamespaceURI()!=null){                 System.out.println("Element Name:"+node.getNodeName());                 System.out.println("Local Name:"+node.getLocalName());                 System.out.println("Namespace Prefix:"+node.getPrefix());                 System.out.println("Namespace Uri:"+node.getNamespaceURI());                 System.out.println("---------------");             }             if(node.hasAttributes()){                 NamedNodeMap map=node.getAttributes();                 int len=map.getLength();                 for (int i = 0; i < len; i++{                    Node attr=map.item(i);                    if(attr.getNamespaceURI()!=null){                        printNSInfo(attr);                    }                }             }             Node child=node.getFirstChild();             System.out.println(child);             while(child!=null)                {                    printNSInfo(child);                    child=child.getNextSibling();                }                         break;         case Node.ATTRIBUTE_NODE:             System.out.println("Attribute Name:"+node.getNodeName());             System.out.println("Local Name:"+node.getLocalName());             System.out.println("Namespace Prefix:"+node.getPrefix());             System.out.println("Namespace Uri:"+node.getNamespaceURI());             System.out.println("---------------");             break;         default:             break;         }    }    public static void main(String[] args) {         String realpath=System.getProperty("user.dir")+File.separator+"src"+File.separator+"DomNS"+File.separator+"book.xml";        DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();        factory.setNamespaceAware(true);//名称空间支持        try {            DocumentBuilder builder=factory.newDocumentBuilder();            Document doc=builder.parse(new File(realpath));            printNSInfo(doc.getDocumentElement());        } catch (Exception e) {            e.printStackTrace();        }    }}

 运行结果:

Element Name:bks:booksLocal Name:booksNamespace Prefix:bksNamespace Uri:http://www.books.org/books---------------Attribute Name:xmlns:bksLocal Name:bksNamespace Prefix:xmlnsNamespace Uri:http://www.w3.org/2000/xmlns/---------------[#text:  ]Element Name:bks:bookLocal Name:bookNamespace Prefix:bksNamespace Uri:http://www.books.org/books---------------[#text:   ]Element Name:bks:titleLocal Name:titleNamespace Prefix:bksNamespace Uri:http://www.books.org/books---------------[#text: java]Element Name:bks:authorLocal Name:authorNamespace Prefix:bksNamespace Uri:http://www.books.org/books---------------Attribute Name:xmlnsLocal Name:xmlnsNamespace Prefix:nullNamespace Uri:http://www.w3.org/2000/xmlns/---------------[#text:    ]Element Name:nameLocal Name:nameNamespace Prefix:nullNamespace Uri:http://www.books.org/people---------------[#text: j2ee]Element Name:titleLocal Name:titleNamespace Prefix:nullNamespace Uri:http://www.books.org/people---------------[#text: teacher]


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