使用DOM解析器解析XML中的属性 [英] Parsing attribute in XML with DOM parser

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问题描述

我目前正在解析XML,但不太清楚如何解析message的status属性:

 < message status =test> <文本> sometext< /文本> < MSISDN>东西< / MSISDN> < /消息> 

这是代码,我已经切断了一切不必要的东西:

  NodeList nodeLst = doc.getElementsByTagName(message); (int s = 0; s< nodeLst.getLength(); s ++){

Node fstNode = nodeLst.item(s);



if(fstNode.getNodeType()== Node.ELEMENT_NODE){

元素fstElmnt =(Element)fstNode;

NodeList numberNmElmntLst = fstElmnt
.getElementsByTagName(msisdn);
元素numberNmElmnt =(Element)numberNmElmntLst.item(0);
NodeList numberNm = numberNmElmnt.getChildNodes();
String phoneNumber =((Node)numberNm.item(0))
.getNodeValue()。substring(2);

NodeList txtNmElmntLst = fstElmnt
.getElementsByTagName(text);
元素txtNmElmnt =(Element)txtNmElmntLst.item(0);
NodeList txtNm = txtNmElmnt.getChildNodes();
String text =((Node)txtNm.item(0))。getNodeValue();

NodeList rcvNmElmntLst = fstElmnt
.getElementsByTagName(received);
元素rcvNmElmnt =(Element)rcvNmElmntLst.item(0);
NodeList rcvNm = rcvNmElmnt.getChildNodes();
String recievedDate =((Node)rcvNm.item(0))。getNodeValue();
}
}

任何人都可以指导我这是怎么做的? p>

提前感谢

解决方案

Node.getAttributes()

  NamedNodeMap attributes = fstElmnt.getAttributes(); 

for(int a = 0; a< attributes.getLength(); a ++)
{
Node theAttribute = attributes.item(a);
System.out.println(theAttribute.getNodeName()+=+ theAttribute.getNodeValue());
}

如果您使用XPATH检索数据,您可以避免遍历。请阅读本教程


I am currently parsing XML, but im not quite sure how to parse the "status" attribute of "message":

<message status="test"> <text>sometext</text> <msisdn>stuff</msisdn> </message>

Here is the code, i have cut off everything unnecessary:

NodeList nodeLst = doc.getElementsByTagName("message");

for (int s = 0; s < nodeLst.getLength(); s++) {

       Node fstNode = nodeLst.item(s);

       if (fstNode.getNodeType() == Node.ELEMENT_NODE) {

               Element fstElmnt = (Element) fstNode;

               NodeList numberNmElmntLst = fstElmnt
               .getElementsByTagName("msisdn");
               Element numberNmElmnt = (Element) numberNmElmntLst.item(0);
               NodeList numberNm = numberNmElmnt.getChildNodes();
               String phoneNumber = ((Node) numberNm.item(0))
               .getNodeValue().substring(2);

               NodeList txtNmElmntLst = fstElmnt
               .getElementsByTagName("text");
               Element txtNmElmnt = (Element) txtNmElmntLst.item(0);
               NodeList txtNm = txtNmElmnt.getChildNodes();
               String text = ((Node) txtNm.item(0)).getNodeValue();

               NodeList rcvNmElmntLst = fstElmnt
               .getElementsByTagName("received");
               Element rcvNmElmnt = (Element) rcvNmElmntLst.item(0);
               NodeList rcvNm = rcvNmElmnt.getChildNodes();
               String recievedDate = ((Node) rcvNm.item(0)).getNodeValue();
            }
}       

Can anyone guide me how this is done?

Thanks in advance.

解决方案

Node.getAttributes()

NamedNodeMap attributes = fstElmnt.getAttributes();

for (int a = 0; a < attributes.getLength(); a++) 
{
        Node theAttribute = attributes.item(a);
        System.out.println(theAttribute.getNodeName() + "=" + theAttribute.getNodeValue());
}

You could avoid traversing if you use XPATH to retrieve the data. Read this tutorial.

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