I want the data/ values comparison of a xml-file on my system with xml response of a rest API call?

Hi Rao-

Thanks for your response, appreciated. Here is the detail which may help you to understand.

I’m trying to compare the whole XML file from my hard drive with the XML response of a rest API call. I want to know how to get this done step by step in Ready API. If there is a groovy script, then what values need to be changed to what in the groovy script to perform this comparison.

1. The XML file is on Hard drive
2. Run the API call (using get method) in Ready API
3. (XML) Response generates in Ready API, and it looks exactly as the file I'm comparing with but obviously it's not a file. Now I want to see the difference between the file and the response generated in this API call.
4. Now, we probably need to add a step after in the test to do this comparison.
5. Do I have to have a groovy script to achieve this or is there another way?
6. If it has to be a groovy script, then where is the script I can find?  I don’t know what values and how to change them in groovy? 
   
   As per your instruction, I googled it. The following is one of a result
   
   
7. import org.custommonkey.xmlunit.*;
   import org.xml.sax.SAXException;
   
   // Get XML documents
   def request = context.expand( '${Request 1#Response}' )
   def response = context.expand( '${Request 2#Response}' )
   
   // Creates a list of elements to ignore
   Set<String> ignoreList = new HashSet<String>();
   ignoreList.add("dateTime")
   ignoreList.add("packageId")
   
   // Create an object with differences between documents
   Diff myDiff = new Diff(request, response)
   DetailedDiff diff = new DetailedDiff(myDiff);
   
   // Get a list of all differences
   List allDifferences = diff.getAllDifferences();
   
   // Loop through all differences and find their node names
   for (int i = 0; i < allDifferences.size(); i++) {
       diffNodeName =""
   
       // Check the node type to get the right node name
       nodeType = allDifferences.get(i).getTestNodeDetail().getNode().getNodeType()
   
       if (nodeType == 1) {
   
           // Get the name of the node if the difference is in the comment
           diffNodeName = allDifferences.get(i).getTestNodeDetail().getNode().getNodeName()
       } else {
   
       // Get the name of the parent node if the difference is not in the comment
       diffNodeName = allDifferences.get(i).getControlNodeDetail().getNode().getParentNode().getNodeName()
       }
   
       // Make sure that the node with a difference is not on the list of nodes to ignore
       if (!ignoreList.contains(diffNodeName)) {
   
           // Fail assertion
            assert false
       }
   }
   
   assert true
   
   Now the challenge is, I'm not a groovy expert nor I'm a programmer. Now I need to help someone to let me know how to use the above in detail 

Thanks,

Ray