The specific code to read the XML file is as follows:
import java.io. *; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.NodeList; public class XMLReaderTest { public static void main(String args[]) { Element element = null; // can use absolute road strength File f = new File("TransData.xml"); // documentBuilder is abstract and cannot be instantiated directly (converts XML files to DOM files) DocumentBuilder db = null; DocumentBuilderFactory dbf = null; try { // Return the documentBuilderFactory object dbf = DocumentBuilderFactory.newInstance(); // Return the db object and use the documentBuilderFatory object to obtain the return documentBuilder object db = dbf.newDocumentBuilder(); // Get a DOM and return it to the document object Document dt = db.parse(f); // get an element root element element = dt.getDocumentElement(); // get the root node System.out.println("根元素:" + element.getNodeName()); // Get the child nodes under the root element NodeList childNodes = element.getChildNodes(); // traverse these child nodes for (int i = 0; i < childNodes.getLength(); i++) { // get each node corresponding to position i Node node1 = childNodes.item(i); if ("Account".equals(node1.getNodeName())) { // If the name of the node is "Account", output the Account element attribute type System.out.println("\r\nFound an account. The area it belongs to: " + node1.getAttributes().getNamedItem("type").getNodeValue() + ". "); // Get the nodes under <Accounts> NodeList nodeDetail = node1.getChildNodes(); // Traverse the nodes under <Accounts> for (int j = 0; j < nodeDetail.getLength(); j++) { // Get each node of the <Accounts> element Node detail = nodeDetail.item(j); if ("code".equals(detail.getNodeName())) // 输出code System.out.println("卡号: " + detail.getTextContent()); else if ("pass".equals(detail.getNodeName())) // 输出pass System.out.println("密码: " + detail.getTextContent()); else if ("name".equals(detail.getNodeName())) // 输出name System.out.println("姓名: " + detail.getTextContent()); else if ("money".equals(detail.getNodeName())) // 输出money System.out.println("余额: " + detail.getTextContent()); } } } } catch (Exception e) { e.printStackTrace (); } } }
The content of the read file TransData.xml is as follows:
<?xml version="1.0" encoding="UTF-8"?> <Accounts> <Account type="type1"> <code>100001</code> <pass>123</pass> <name>李四</name> <money>1000000.00</money> </Account> <Account type="type2"> <code>100002</code> <pass>123</pass> <name>张三</name> <money>1000.00</money> </Account> </Accounts>
The read result is as follows:
Root element: Accounts
found an account. Owned area:
type1.Card number: 100001Password: 123Name
:
Li SiBalance
: 1000000.00Found
an account. Owned area : type2.Card number:
100002Password :
123Name :
Zhang SanBalance
: 1000.00