java

Java/Java源代码/codedemo/xml/XPathDemo.java

@@ -0,0 +1,34 @@
+package cn.aofeng.demo.xml;
+
+import javax.xml.xpath.XPath;
+import javax.xml.xpath.XPathConstants;
+import javax.xml.xpath.XPathExpressionException;
+import javax.xml.xpath.XPathFactory;
+
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.InputSource;
+
+/**
+ * XPath语法实践。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class XPathDemo {
+
+    public static void main(String[] args) throws XPathExpressionException {
+        InputSource ins = new InputSource(XPathDemo.class.getResourceAsStream("/cn/aofeng/demo/xml/BookStore.xml"));
+        XPathFactory factory = XPathFactory.newInstance();
+        XPath xpath = factory.newXPath();
+        NodeList result = (NodeList) xpath.evaluate("//title[@lang='de']", ins, XPathConstants.NODESET);
+        for (int i = 0; i < result.getLength(); i++) {
+            Node node = result.item(i);
+            StringBuilder buffer = new StringBuilder()
+                .append("NodeName=").append(node.getNodeName()).append(", ")
+                .append("NodeValue=").append(node.getNodeValue()).append(", ")
+                .append("Text=").append(node.getTextContent());
+            System.out.println(buffer.toString());
+        }
+    }
+
+}