Java 如果存在xsi:type和不同的名称空间前缀，则xmlunit.Diff返回similor=false

此代码：

import org.custommonkey.xmlunit.Diff;

String result = "<ns1:Square xsi:type=\"ns1:Shape\" xmlns:ns1=\"http://example.com/\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"/>";
String correct = "<ns2:Square xsi:type=\"ns2:Shape\" xmlns:ns2=\"http://example.com/\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"/>";

Diff diff = new Diff(result, correct);
System.out.println("diff:" + diff);
System.out.println("diff.similar(): " + diff.similar());

import org.custommonkey.xmlunit.Diff；
字符串结果=”；
字符串正确=”；
Diff Diff=新的Diff（结果，正确）；
System.out.println（“diff:+diff”）；
System.out.println（“diff.simular（）：”+diff.simular（））；

结果：

diff: org.custommonkey.xmlunit.Diff
[not identical] Expected namespace prefix 'ns1' but was 'ns2' - comparing <ns1:Square...> at /Square[1] to <ns2:Square...> at /Square[1]

[different] Expected attribute value 'ns1:Shape' but was 'ns2:Shape' - comparing <ns1:Square xsi:type="ns1:Shape"...> at /Square[1]/@type to <ns2:Square xsi:type="ns2:Shape"...> at /Square[1]/@type

diff.similar(): false

diff:org.custommonkey.xmlunit.diff
[不完全相同]应为命名空间前缀“ns1”，但为“ns2”-将at/Square[1]与at/Square[1]进行比较
[不同]预期属性值为“ns1:Shape”，但为“ns2:Shape”-将at/Square[1]/@type与at/Square[1]/@type进行比较
差异相似（）：false

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我希望diff.simular（）是真的。 还是说这是错误的原因？还是一只虫子

如果删除xsi:type信息，则返回true

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知道如何修复它吗？

XMLUnit不理解xsi类型。它对属性值进行简单的字符串比较

实现自定义差异Listener执行此操作

    final Diff d = new Diff(result, correct);
    d.overrideDifferenceListener(new DifferenceListener() {

        public int differenceFound(Difference difference) {

            final Node controlNode = difference.getControlNodeDetail().getNode();
            final Node testNode = difference.getTestNodeDetail().getNode();
            if (difference.getId() == DifferenceConstants.ATTR_VALUE_ID
                && isXSIType(controlNode) && isXSIType(testNode)) {
                if (getNameSpaceFromPrefix(controlNode).compareTo(getNameSpaceFromPrefix(testNode)) != 0) {
                    return RETURN_ACCEPT_DIFFERENCE;
                }
                String withoutPrefixControl = getNameWithoutPrefix(controlNode);
                String withoutPrefixTest = getNameWithoutPrefix(testNode);

                if (withoutPrefixControl.compareTo(withoutPrefixTest) == 0) {
                    return RETURN_IGNORE_DIFFERENCE_NODES_IDENTICAL;
                }
            }
            return RETURN_ACCEPT_DIFFERENCE;
        }

        boolean isXSIType(org.w3c.dom.Node node) {
            return node.getNodeType() == Node.ATTRIBUTE_NODE &&
                node.getLocalName().compareTo("type") == 0 &&
                node.getNamespaceURI() == "http://www.w3.org/2001/XMLSchema-instance";
        }

        private String getNameSpaceFromPrefix(Node node) {
            final int beginIndex = node.getNodeValue().indexOf(":");
            if (beginIndex == -1) {
                return "";
            }
            return node.lookupNamespaceURI(node.getNodeValue().substring(0, beginIndex));
        }

        private String getNameWithoutPrefix(Node controlNode) {
            final int beginIndex = controlNode.getNodeValue().indexOf(":");
            if (beginIndex == -1) {
                return controlNode.getNodeValue();
            }
            return controlNode.getNodeValue().substring(beginIndex);
        }

        public void skippedComparison(org.w3c.dom.Node node, org.w3c.dom.Node node1) {

        }
    });

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对于XMLUnit2.x，将其添加到diff builder

.withDifferenceEvaluator(new DifferenceEvaluator() {
    public ComparisonResult evaluate(Comparison comparison, ComparisonResult comparisonResult) {

        // skip namespace prefix comparison
        if (comparison.getType().equals(ComparisonType.NAMESPACE_PREFIX))
            return ComparisonResult.SIMILAR;
        return comparisonResult;
    }
})

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干得好！我向项目组发布了一个指向您修复的链接。希望他们能在下一个版本中包含它（2009年的最后一个版本…）。此案例和其他案例在其上次修订版中正常工作。他们将很快发布一个版本：XMLUnit1.4已经发布，它也解决了这个问题。