Question

我有以下xml.I需要从上面的xml中获取bcc，cc，main，subject的值。

我该如何解析这个？

<?xml version="1.0" encoding="UTF-8"?>
<abc>
    <pqr ref1="8340403366" ref2="0000000228754072" ref3="3200051014">
    </pqr>
    <errors>
        <subject>Error is there</subject> 
        <mailto bcc="priyanka.chaddha@gmail.com" cc="richard.gayle@gmail.com"main="richard.gayle@gmail.com"/>
        <text mnofield="000020"/>
    </errors>
</abc>

Answer 1

如果你试图解析一个xml文件，这样可以帮助你：

DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();

Document doc = dBuilder.parse(file);
XPath xPath = XPathFactory.newInstance().newXPath();

String expression = "//pqr/@ref1";  // This line defines the element or attribute that you want to retrieve
Node node = (Node) xPath.compile(expression).evaluate(doc, XPathConstants.NODE);
String nodeValue = node.getTextContent();

如果您的xml文件具有重复的元素和属性，您可能希望将值存储在NodeList中。为此您可以使用：

NodeList nodeList = (NodeList) xPath.compile(expression).evaluate(doc, XPathConstants.NODESET);

您应该查看以下链接：

http://www.roseindia.net/tutorials/xPath/index.shtml

https://msdn.microsoft.com/en-us/library/ms256086(v=vs.110).aspx

使用xpath进行Xml解析 - Xpath或DOM

1 个答案: