Finding nodes of nodes in an XML file

Question

Saeed Soltani 2016-7-28

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/297563-finding-nodes-of-nodes-in-an-xml-file

回答： Robert Ungi 2022-1-5

How can I find nodes of element X just in element Y (not in whole of file) ?

<Y>
  <X>
      <Value>AirMass</Value>
      <Value>RailPressure</Value>
      <Value>BoostPressure</Value>    
    </X>
<Y>
<X>
    <Value>Speed</Value>
    <Value>Torque</Value>
</X>

What I have, returns the whole childs of X:

d = xmlread('myfile.xml')
v = d.getElementsByTagName('X')
for i=0:v.getLength-1
v.item(i).getTextContent
end

I just need to get: AirMass, RailPressure, BoostPressure.

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Answer 1

Robert Ungi 2022-1-5

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/297563-finding-nodes-of-nodes-in-an-xml-file#answer_868330

在 MATLAB Online 中打开

Its a bit late, but whoever is looking for such a solution (I altered the smaple xml file above because it is invalid):

% <xml>
% <Y>
%   <X>
%       <Value>AirMass</Value>
%       <Value>RailPressure</Value>
%       <Value>BoostPressure</Value>    
%     </X>
% </Y>
% <X>
%     <Value>Speed</Value>
%     <Value>Torque</Value>
% </X>
% </xml>
import javax.xml.xpath.*
factory = XPathFactory.newInstance;
import javax.script.ScriptContext;
xpath = factory.newXPath;
fXML=xmlread('SampleXML.xml');
expression = xpath.compile('xml/Y/X/Value'); 
Value = expression.evaluate(fXML, XPathConstants.NODESET);
for i=0:Value.getLength-1
    disp(Value.item(i).getTextContent)
end