How can I compare two similar XML files in XMLUnit

问题

I want to use XMLUnit to compare two similar XML files.

Basically every thing is same, File1 is a copy of File2 , but in File2 I have changed the order of some elements in one node.

I am trying to run a test where it compares these files and returns a result of similar and not treat these files as different.

回答1:

I think this link can help you - http://www.ibm.com/developerworks/java/library/j-cq121906.html#N10158

Basically, if your File1 is like -

<account>
 <id>3A-00</id>
 <name>acme</name>
</account>

And File2 is same, but only differs in order of <name> and <id> -

<account>
 <name>acme</name>
 <id>3A-00</id>
</account>

Then you can write a test like below which will compare these and return similar.

public void testIdenticalAndSimilar() throws Exception {
   String controlXML = "<account><id>3A-00</id><name>acme</name></account>";
   String testXML = "<account><name>acme</name><id>3A-00</id></account>"; 
   Diff diff = new Diff(controlXML, testXML);
   assertTrue(diff.similar());
   assertFalse(diff.identical());
}

Hope that helps.

回答2:

This should do it:

    // Assuming file1 and file2 are not deeply nested XML files
    DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
    DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
    Document doc1 = docBuilder.parse(file1);
    Document doc2 = docBuilder.parse(file2);

    // SOLUTION 1: Are the files "similar"?
    Diff diff = new Diff(doc1, doc2);
    System.out.println("Similar (true/false): " + diff.similar());

    // SOLUTION 2: Should you want detailed differences (especially useful for deeply nested files)
    Diff diff = new Diff(doc1, doc2);
    diff.overrideElementQualifier(new RecursiveElementNameAndTextQualifier()); 
    DetailedDiff detailedDiff = new DetailedDiff(diff); 
    System.out.println("Detailed differences: " + detailedDiff.getAllDifferences().toString());

Hope that helps a bit. Read up on XMLUnit here.

来源：https://stackoverflow.com/questions/1725993/how-can-i-compare-two-similar-xml-files-in-xmlunit

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xmlunit