java - 在 Java 中比较两个相似的 XML 数据与无序元素/属性

Question

我正在寻找一个可以比较两个 XML 数据的 API。我尝试过 XMLUnit 2，但找不到让它在我的示例中正常工作的方法。您能给我一个适合我的需要的例子吗？

我的第一个 XML 数据 xml1:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<urlset xmlns="http://www.sitemap.org/schemas/sitemap/0.9">
    <url>
        <loc>a1/</loc>
        <lastmod>a2</lastmod>
    </url>
    <url>
        <loc>b1</loc>
        <lastmod>b2</lastmod>
    </url>
    <url>
        <loc>c1</loc>
        <lastmod>c2</lastmod>
    </url>
</urlset>

我的第二个 XML 数据 xml2:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<urlset xmlns="http://www.sitemap.org/schemas/sitemap/0.9">
    <url><lastmod>b2</lastmod><loc>b1</loc></url>
    <url>
        <lastmod>c2</lastmod>
        <loc>c1</loc>
    </url>
    <url>
        <loc>a1/</loc>
        <lastmod>a2</lastmod>
    </url>
</urlset>

注意:

• 大小相同(这里是 3 个 child )
• urlset 的子节点 (url) 可能未排序
• url 的元素(loc 和 lastmod)可能未排序
• 忽略空格

寻找返回true的API，例如:

XMLUtils.isSimilar(xml1, xml2);

我对 XMLUnit 2 的不成功尝试(尝试使用多个“NodeMatcher”):

// Attempt with XmlAssert.assertThat:
XmlAssert.assertThat(xml1)
    .and(xml2)
    .ignoreChildNodesOrder()
    .ignoreWhitespace()
    .withNodeMatcher(new DefaultNodeMatcher(ElementSelectors.byNameAndText))
    .areSimilar();

// Attempt with Diff
Diff myDiff = DiffBuilder.compare(xml1)
    .withTest(xml2)
    .ignoreWhitespace()
    .checkForSimilar()
    .withNodeMatcher(new DefaultNodeMatcher(ElementSelectors.byNameAndText))
     .build();
myDiff.getDifferences();

Answer 1

您可以尝试如下

public class XMLUtils {
    private static DocumentBuilderFactory documentBuilderFactory;
    private static DocumentBuilder documentBuilder;
    private static TransformerFactory transformerFactory;
    private static Transformer transformer;
    private static Document emptyDoc;

    public XMLUtils() {
    }

    public XMLCompareResult compare(File expectedFile, File actualFile, boolean ignoreWhiteSpace) throws FileNotFoundException, SAXException, IOException {
        FileInputStream expInpStream = new FileInputStream(expectedFile);
        FileInputStream actualInpStream = new FileInputStream(actualFile);
        Diff myDiff = null;
        if (ignoreWhiteSpace) {
            myDiff = DiffBuilder.compare(expInpStream).withTest(actualInpStream).checkForSimilar().ignoreWhitespace().withNodeMatcher(new DefaultNodeMatcher(new ElementSelector[]{ElementSelectors.byNameAndAllAttributes})).build();
        } else {
            myDiff = DiffBuilder.compare(expInpStream).withTest(actualInpStream).checkForSimilar().withNodeMatcher(new DefaultNodeMatcher(new ElementSelector[]{ElementSelectors.byNameAndAllAttributes})).build();
        }

        XMLResultUtil xmlr = new XMLResultUtil();
        XMLCompareResult xs = xmlr.prepareXMLCompareResult(myDiff.getDifferences());
        return xs;
    }  

    static {
        try {
            documentBuilderFactory = DocumentBuilderFactory.newInstance();
            documentBuilder = documentBuilderFactory.newDocumentBuilder();
            transformerFactory = TransformerFactory.newInstance();
            transformer = transformerFactory.newTransformer();
            emptyDoc = documentBuilder.newDocument();
        } catch (ParserConfigurationException var1) {
            var1.printStackTrace();
        } catch (TransformerConfigurationException var2) {
            var2.printStackTrace();
        }

    }
}

我在这里复制了我们在项目中使用的方法。

您可以尝试一下吗？如果遇到任何问题请告诉我。我可以自己再尝试一下。

谢谢