如何使用DOM解析器从XML文件读取注释 [英] How to read comments from XML file using DOM parser

问题描述

我正在尝试读取XML文件中的注释。代码：

  DocumentBuilderFactory docBldrFactry = DocumentBuilderFactory.newInstance（）; 
 docBldrFactry.setIgnoringComments（false）; 
 DocumentBuilder docBuilder = docBldrFactry.newDocumentBuilder（）; 
 Document document = docBuilder.parse（new File（C：\\\webser.xml））; 
元素rootElement = document.getDocumentElement（）; 
 NodeList list = rootElement.getElementsByTagName（Bean）; 
  

注释是在Bean元素下。当我循环遍历Bean元素的子节点时，我没有得到评论节点。

这里是XML

 <豆类> 
< Bean> 
<！ - 测试评论 - > 
< API name =xyz/> 
< / Bean> 
< / Beans> 
  

解决方案

希望这有帮助:)

  XMLStreamReader xr = XMLInputFactory.newInstance（）。createXMLStreamReader（new FileInputStream（file.xml））; 
 while（xr.hasNext（））{
 if（xr.next（）== XMLStreamConstants.COMMENT）{
 String comment = xr.getText（）; 
}} 
  

I'm trying to read the comments in an XML file. Not able to get the comment nodes after parsing it with DOM.

Code:

DocumentBuilderFactory docBldrFactry = DocumentBuilderFactory.newInstance();
docBldrFactry.setIgnoringComments(false);
DocumentBuilder docBuilder = docBldrFactry.newDocumentBuilder();
Document document = docBuilder.parse(new File("C:\\webser.xml"));
Element rootElement = document.getDocumentElement();
NodeList list = rootElement.getElementsByTagName("Bean");

Comments are under Bean element. WHen I loop through the child nodes of Bean element, I don't get the comment nodes.

Here is the XML

<Beans>
  <Bean>
    <!-- Testing Comments -->
    <API name ="xyz" />
  </Bean>
</Beans>

解决方案

Hope this helps :)

XMLStreamReader xr = XMLInputFactory.newInstance().createXMLStreamReader(new FileInputStream("file.xml")); 
while (xr.hasNext()) {
    if (xr.next() == XMLStreamConstants.COMMENT) {
        String comment = xr.getText();
    } }

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