Question

如何在使用XMLUnit的DetailedDiff函数时仅检查特定节点而不是所有节点的差异

这是我的代码：

public static void main(String[] args) 
    {
        //URL url1 = xmlunittest.class.getResource("MSHIS1.xml");
    //  URL url2 = xmlunittest.class.getResource("MSHIS.xml");

        Logger L = new Logger();

        FileReader fr1 = null;
        int countofdifferences = 0;
        FileReader fr2 = null;
        try {
            fr1 = new FileReader("MSHIS.xml");
            fr2 = new FileReader("MSHIS1.xml");
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

        try {
            Diff diff = new Diff(fr1, fr2);
            L.writeToBVTLOG("Similar? " + diff.similar());
            L.writeToBVTLOG("Identical? " + diff.identical());


            DetailedDiff detDiff = new DetailedDiff(diff);
            List differences = detDiff.getAllDifferences();
            for (Object object : differences) {
                Difference difference = (Difference)object;
                L.writeToBVTLOG("------------------------");
                L.writeToBVTLOG(difference.toString());
                L.writeToBVTLOG("------------------------");

                countofdifferences++;
            }

        } catch (SAXException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }


        L.writeToBVTLOG(countofdifferences);
    }

但问题是，我只想让程序告诉我4个特定节点是否经历过任何更改。那么如何通过列出所有差异来实现目标。

Answer 1

您可以实现自己忽略某些节点的DifferenceListener（或只关注某些节点），并告诉XMLUnit在检查差异时使用它。这是一个忽略任何名为“myelement”的元素的DifferenceListener：

public class IgnoreMyAttributeElements implements DifferenceListener()
{

      @Override
      public int differenceFound(Difference differenceIn)
      {
         Node controlNode = differenceIn.getControlNodeDetail().getNode();

         if(controlNode.getNodeType() == Node.ELEMENT_NODE)
         {
            if(controlNode.getLocalName().equals("myelement");
            {
               return DifferenceListener.RETURN_IGNORE_DIFFERENCE_NODES_IDENTICAL;
            }
         }

         return DifferenceListener.RETURN_ACCEPT_DIFFERENCE;
      }

      @Override
      public void skippedComparison(Node nodeIn, Node nodeIn2)
      {
         //don't care about these events
      }
}

然后将其传递给DetailedDiff：

DetailedDiff diff =  new DetailedDiff(XMLUnit.compareXML(oldXml, newXml));
diff.overrideDifferenceListener(new IgnoreMyAttributeElements());
List<?> allDifferences = diff.getAllDifferences();
//do something with differences

Answer 2

您可以先使用javax.xml.transform.TransformerFactory转换这两个文档，以便它只包含您感兴趣的节点。或者你可以在差异上使用getControlNodeDetail（）和getTestNodeDetail（）来查看差异是否适用于你想要的节点。

使用XMLUnit查找两个XML文件的差异

2 个答案: