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xPath XML file with namespaces using Javascript

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广开言路
广开言路 2020-12-18 16:00

I have done a TON of research and still have just hit a dead-end :(

Here\'s my XML file (test.xml):
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2条回答
  • 遇见更好的自我
    2020-12-18 16:42

    Ahhh My code was working in IE but not broswers like Firefox (Interesting thing, the code only executed in IE if it was being hosted by a server (apache, etc.) ).

    I now fixed it all and it works flawlessly with all browsers. I can't thank you enough Martin.

    I wasn't parsing the function constructors variables correctly.

    Here is fully functional code:

    <html>
<body>
<script type="text/javascript">

function loadXMLDoc(dname)
{
if (window.XMLHttpRequest)
  {
  xhttp=new XMLHttpRequest();
  }
else
  {
  xhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xhttp.open("GET",dname,false);
xhttp.send("");
return xhttp.responseXML;
}

xml=loadXMLDoc("test.xml");
var path="/bookstore/bk:book/bk:title";

if (typeof xml.evaluate !== 'undefined') 
{
  var result = xml.evaluate(
   path,
   xml,
   function (prefix) {
     if (prefix === 'bk') {
       return 'http://purl.org/dc/elements/1.1/';
     }
     else {
       return null;
     }
   },
   XPathResult.ANY_TYPE,
   null
  );
  // now use the code here you already have in your sample for evaluate
  var nodes=xml.evaluate(
   path,
   xml,
   function (prefix) {
     if (prefix === 'bk') {
       return 'http://purl.org/dc/elements/1.1/';
     }
     else {
       return null;
     }
   },
   XPathResult.ANY_TYPE,
   null);
var result=nodes.iterateNext();

while (result)
  {
  document.write(result.childNodes[0].nodeValue);
  document.write("<br />");
  result=nodes.iterateNext();
  } 
}
else if (typeof xml.selectNodes !== 'undefined' && typeof xml.setProperty != 'undefined') 
{
  xml.setProperty('SelectionLanguage', 'XPath');
  xml.setProperty('SelectionNamespaces', 'xmlns:bk="http://purl.org/dc/elements/1.1/"');
  var nodes = xml.selectNodes(path);
  // now use the code you already have for selectNodes
var nodes=xml.selectNodes(path);
//var nodes=xmlDoc.getElementsByTagName('bk:title');

for (i=0;i<nodes.length;i++)
  {
  document.write(nodes[i].childNodes[0].nodeValue);
  document.write("<br />");
  }


}

</script>
</body>
</html>
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  • 名媛妹妹
    2020-12-18 16:46

    Here is some sample code to show how to deal with namespaces:

    var path="/bookstore/bk:book/bk:title";

if (typeof xml.evaluate !== 'undefined') {
  var result = xml.evaluate(
   path,
   xml,
   function (prefix) {
     if (prefix === 'bk') {
       return 'http://purl.org/dc/elements/1.1/';
     }
     else {
       return null;
     }
   },
   XPathResult.ANY_TYPE,
   null
  );
  // now use the code here you already have in your sample for evaluate 
}
else if (typeof xml.selectNodes !== 'undefined' && typeof xml.setProperty != 'undefined') {
  xml.setProperty('SelectionLanguage', 'XPath');
  xml.setProperty('SelectionNamespaces', 'xmlns:bk="http://purl.org/dc/elements/1.1/"');
  var nodes = xml.selectNodes(path);
  // now use the code you already have for selectNodes
}
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