Node.getTextContent() 返回当前节点及其后代的文本内容。
有没有办法获取当前节点的文本内容,而不是后代的文本。
Example
<paragraph>
<link>XML</link>
is a
<strong>browser based XML editor</strong>
editor allows users to edit XML data in an intuitive word processor.
</paragraph>
预期产出
paragraph = is a editor allows users to edit XML data in an intuitive word processor.
link = XML
strong = browser based XML editor
我尝试了下面的代码
String str = "<paragraph>"+
"<link>XML</link>"+
" is a "+
"<strong>browser based XML editor</strong>"+
"editor allows users to edit XML data in an intuitive word processor."+
"</paragraph>";
org.w3c.dom.Document domDoc = null;
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder;
try {
docBuilder = docFactory.newDocumentBuilder();
ByteArrayInputStream bis = new ByteArrayInputStream(str.getBytes());
domDoc = docBuilder.parse(bis);
} catch (ParserConfigurationException e1) {
e1.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
DocumentTraversal traversal = (DocumentTraversal) domDoc;
NodeIterator iterator = traversal.createNodeIterator(
domDoc.getDocumentElement(), NodeFilter.SHOW_ELEMENT, null, true);
for (Node n = iterator.nextNode(); n != null; n = iterator.nextNode()) {
String tagname = ((Element) n).getTagName();
System.out.println(tagname + "=" + ((Element)n).getTextContent());
}
但它给出这样的输出
paragraph=XML is a browser based XML editoreditor allows users to edit XML data in an intuitive word processor.
link=XML
strong=browser based XML editor
请注意段落元素包含的文本link and strong标签,我不想要。
请提出一些想法?
您想要的是过滤节点的子节点<paragraph>
只保留具有节点类型的Node.TEXT_NODE
.
这是一个方法示例,它将返回您所需的内容
public static String getFirstLevelTextContent(Node node) {
NodeList list = node.getChildNodes();
StringBuilder textContent = new StringBuilder();
for (int i = 0; i < list.getLength(); ++i) {
Node child = list.item(i);
if (child.getNodeType() == Node.TEXT_NODE)
textContent.append(child.getTextContent());
}
return textContent.toString();
}
在您的示例中,这意味着:
String str = "<paragraph>" + //
"<link>XML</link>" + //
" is a " + //
"<strong>browser based XML editor</strong>" + //
"editor allows users to edit XML data in an intuitive word processor." + //
"</paragraph>";
Document domDoc = null;
try {
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
ByteArrayInputStream bis = new ByteArrayInputStream(str.getBytes());
domDoc = docBuilder.parse(bis);
} catch (Exception e) {
e.printStackTrace();
}
DocumentTraversal traversal = (DocumentTraversal) domDoc;
NodeIterator iterator = traversal.createNodeIterator(domDoc.getDocumentElement(), NodeFilter.SHOW_ELEMENT, null, true);
for (Node n = iterator.nextNode(); n != null; n = iterator.nextNode()) {
String tagname = ((Element) n).getTagName();
System.out.println(tagname + "=" + getFirstLevelTextContent(n));
}
Output:
paragraph= is a editor allows users to edit XML data in an intuitive word processor.
link=XML
strong=browser based XML editor
它的作用是迭代节点的所有子节点,仅保留文本(从而排除注释、节点等)并累积它们各自的文本内容。
没有直接的方法Node
or Element
仅获取第一级的文本内容。
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