Java读写XML数据文件时出现“文件提前结束”错误

使用Java读写XML数据文件时，有时会遇到“文件提前结束”错误的问题。这个错误通常是由于文件损坏、格式错误或者读取过程中出现异常等原因引起的。在本文中，我们将探讨这个错误的原因，并介绍一些解决方法。

java
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.w3c.dom.Node;
import org.w3c.dom.Element;
import java.io.File;
public class ReadXMLFile {
    public static void main(String[] args) {
        try {
            File inputFile = new File("input.xml");
            DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
            Document doc = dBuilder.parse(inputFile);
            doc.getDocumentElement().normalize();
            System.out.println("Root element: " + doc.getDocumentElement().getNodeName());
            NodeList nodeList = doc.getElementsByTagName("student");
            for (int temp = 0; temp < nodeList.getLength(); temp++) {
                Node node = nodeList.item(temp);
                if (node.getNodeType() == Node.ELEMENT_NODE) {
                    Element element = (Element) node;
                    System.out.println("Student roll no: " + element.getAttribute("rollno"));
                    System.out.println("First Name: " + element.getElementsByTagName("firstname").item(0).getTextContent());
                    System.out.println("Last Name: " + element.getElementsByTagName("lastname").item(0).getTextContent());
                    System.out.println("Age: " + element.getElementsByTagName("age").item(0).getTextContent());
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}