Question

我有一个Java XML实用程序类。 buildDocument()方法接受XML字符串并返回org.w3c.dom.Document。我传递给它的特定XML是一个xhtml 1.1文档。

问题在于是否存在HTML命名实体，如

<p>Preserve dagger &dagger;</p>

输出是，

<p>Preserve dagger </p>

确实保留了<，>，&，"。

以下是创建Document的课程。

package com.example;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.StringWriter;
import java.nio.charset.StandardCharsets;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;

public final class XMLUtils {

    private XMLUtils() {
    }

    public static Document buildDocument(String xml) throws ParserConfigurationException, SAXException, IOException {

        DocumentBuilderFactory domFactory = DocumentBuilderFactory
            .newInstance();
        domFactory.setNamespaceAware(true);

        domFactory.setFeature("http://xml.org/sax/features/validation", false);
        domFactory.setFeature(
            "http://apache.org/xml/features/nonvalidating/load-dtd-grammar", false);
        domFactory.setFeature(
            "http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
        domFactory.setCoalescing(false);
        DocumentBuilder builder = domFactory.newDocumentBuilder();

        Document doc = builder.parse(new ByteArrayInputStream(
                xml.getBytes(StandardCharsets.UTF_8)));

        try {
            DOMSource domSource = new DOMSource(doc);
            StringWriter writer = new StringWriter();
            StreamResult result = new StreamResult(writer);
            TransformerFactory tf = TransformerFactory.newInstance();
            Transformer transformer = tf.newTransformer();
            transformer.transform(domSource, result);
            System.out.println("XML OUT: \n" + writer.toString());
        } catch (Exception ex) {

        }

        return doc;
    }
}

我认为这些是相关的依赖。

<dependency>
    <groupId>net.sf.saxon</groupId>
    <artifactId>Saxon-HE</artifactId>
    <version>9.5.1-6</version>
</dependency>
<dependency>
    <groupId>xerces</groupId>
    <artifactId>xercesImpl</artifactId>
    <version>2.11.0</version>
    <type>jar</type>
</dependency>
<dependency>
    <groupId>xml-resolver</groupId>
    <artifactId>xml-resolver</artifactId>
    <version>1.2</version>
    <type>jar</type>
</dependency>

有关如何保存这些实体的任何想法？谢谢，/ w

Answer 1

花了一些时间才找到这个问题的解决方案，显然很难找到合适的关键字...因为我发现这个之前找到了最好的答案，我认为是值得在这里链接它，即使它仍然在StackOverflow上。你去：Keep numeric character entity characters such as `
 ` when parsing XML in Java

这不太令人满意，但至少它解释了为什么没有更好的解决方案。

构建org.w3c.dom.Document时剥离的HTML字符实体

1 个答案: