Dom4j xPath

XPath is a language used to search for information in XML documents. XPath can be used to traverse elements and attributes in XML documents.

XPath is the main element of W3C XSLT standards, and XQuery and XPointer are also built on XPath expressions.

1. Select a node

XPath uses path expressions to select nodes in XML documents. Nodes are selected by following the path or step.

2. Instance

3. Select an unknown Node

The XPath wildcard can be used to select unknown XML elements.

DEMO

// Get the parsing stream SAXReader reader = new SAXReader (); // Parse xmlDocument document = reader. read ("books. xml "); // Obtain the Node node Node = document. selectSingleNode ("// book [@ id = 'b001']");

 

Dom4j xPath