使用Java解析XML文檔

//導入的包
import java.io.FileNotFoundException;
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException; 

//寫實現

public static void main(String[] args) {
// 1、得到DOM解析器的工廠實例
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
// 2、從DOM工廠獲得DOM解析器
DocumentBuilder db = dbf.newDocumentBuilder();
// 3、解析XML文檔，得到一個Document，即DOM樹
Document doc = db.parse("dogs.xml");
// 4、得到所有student節點列表信息
NodeList petList = doc.getElementsByTagName("dog");
// 5、循環讀取xml文件中的寵物信息
System.out.println("XML文件中寵物的初始化信息：");
for (int i = 0; i < petList.getLength(); i++) {   
<span style="white-space:pre">	</span>Node pet = petList.item(i);//獲取節點
<span style="white-space:pre">	</span>for (Node node = pet.getFirstChild(); node != null; node = node.getNextSibling()) {   //再從該節點進行循環其子節點
<span style="white-space:pre">		</span>if (node.getNodeType() == Node.ELEMENT_NODE) {
<span style="white-space:pre">			</span>String name = node.getNodeName();   //獲取節點名稱
<span style="white-space:pre">			</span>String value = node.getFirstChild().getNodeValue();  //獲取節點內容
<span style="white-space:pre">			</span>System.out.print(name + ":" + value + "\t");
<span style="white-space:pre">		</span>}
<span style="white-space:pre">	</span>}
<span style="white-space:pre">	</span>System.out.println();
}
} catch (ParserConfigurationException e) {
<span style="white-space:pre">	</span>e.printStackTrace();
} catch (FileNotFoundException e) {
<span style="white-space:pre">	</span>e.printStackTrace();
} catch (SAXException e) {
<span style="white-space:pre">	</span>e.printStackTrace();
} catch (IOException e) {
<span style="white-space:pre">	</span>e.printStackTrace();
}
}