java - SAX 解析器由于 标记而忽略文本

Question

这里有一个小问题，我不知道如何解决。我有一个如下所示的 XML 文件:

<?xml version="1.0"?>
<item>
 <title>Item 1</name>
 <description>Description Text 1&lt;br /&gt;Description Text 2</description>
</item>

我有一个如下所示的 SAX 解析器:

public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
    if ("item".equals(qName)) {
        currentItem = new Item();
    } else if ("title".equals(qName)) {
        parsingTitle = true;
    } else if ("description".equals(qName)) {
        parsingDescription = true;
    }
}

@Override
public void endElement(String uri, String localName, String qName) throws SAXException {

    System.out.println("Testing endelement");

    if ("item".equals(qName)) {
        Items.add(currentItem);
        currentItem = null;
    } else if ("title".equals(qName)) {
        parsingTitle = false;
    } else if ("description".equals(qName)) {
        parsingDescription = false;
    }
}

@Override
public void characters(char[] ch, int start, int length) throws SAXException {

    System.out.println("writing");

    if (parsingTitle) {
        if (currentItem != null)
            currentItem.setTitle(new String(ch, start, length));
    } else if (parsingDescription) {
        if (currentItem != null) {
            currentItem.setDescription(new String(ch, start, length));
            parsingDescription = false;
        }
    }

问题是 SAX 仅解析标记中文本的第一部分，直到“
”文本(即
标记)并忽略其余部分。如何让 SAX 解析器忽略“
”并解析其余的描述？

谢谢。

Answer 1

正如评论中提到的，您不能依赖 characters() 一次性提供元素的所有文本。我推荐这样的内容(查找代码中的注释，看看我修改了哪里)，然后对标题进行类似的修改:

// buffer to hold description
private StringBuffer descriptionBuffer;
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
    if ("item".equals(qName)) {
        currentItem = new Item();
    } else if ("title".equals(qName)) {
        parsingTitle = true;
    } else if ("description".equals(qName)) {
        parsingDescription = true;
        // initialize buffer
        descriptionBuffer = new StringBuffer();
    }
}

@Override
public void endElement(String uri, String localName, String qName) throws SAXException {

    System.out.println("Testing endelement");

    if ("item".equals(qName)) {
        Items.add(currentItem);
        currentItem = null;
    } else if ("title".equals(qName)) {
        parsingTitle = false;
    } else if ("description".equals(qName)) {
        // Put contents of buffer into description
        currentItem.setDescription(descriptionBuffer.toString());
        descriptionBuffer = null;
        parsingDescription = false;
    }
}

@Override
public void characters(char[] ch, int start, int length) throws SAXException {

    System.out.println("writing");

    if (parsingTitle) {
        if (currentItem != null)
            currentItem.setTitle(new String(ch, start, length));
    } else if (parsingDescription) {
        // add to buffer
        descriptionBuffer.append(ch, start, length); 
    }
}