用DOM将对象写入XML中

系统管理员 2022-05-29 02:08 142阅读 0赞

public class DOMWriteXML {
    	
    	public static void writeXML(List<Student> students){
    		DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    		try {
    			DocumentBuilder builder = factory.newDocumentBuilder();
    			Document doc = builder.newDocument();
    			
    			//创建根节点
    			Element root = doc.createElement("stus");
    			
    			for(Student stu : students){
    				Element student = doc.createElement("student");
    				
    				Element name = doc.createElement("name");
    				name.appendChild(doc.createTextNode(stu.getName()));
    				
    				Element age = doc.createElement("age");
    				age.appendChild(doc.createTextNode(stu.getAge()+""));
    				
    				Element email = doc.createElement("email");
    				email.appendChild(doc.createTextNode(stu.getEmail()));
    				
    				student.appendChild(name);
    				student.appendChild(age);
    				student.appendChild(email);
    				
    				root.appendChild(student);
    			}
    			
    			doc.appendChild(root);
    			
    			//document --> xml文件
    			TransformerFactory tf = TransformerFactory.newInstance();
    			Transformer t = tf.newTransformer();
    			//设置编码
    			t.setOutputProperty("encoding", "UTF-8");
    			
    			DOMSource source = new DOMSource(doc);
    			Result result = new StreamResult("stu.xml");
    			t.transform(source, result);
    		} catch (ParserConfigurationException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		} catch (TransformerConfigurationException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		} catch (TransformerException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		};
    	}
    
    	public static void main(String[] args) {
    		List<Student> students = new ArrayList<>();
    		students.add(new Student("marry", 25, "admin@sina.com"));
    		students.add(new Student("john", 21, "john@qq.com"));
    		students.add(new Student("jack", 23, "123@qq.com"));
    		writeXML(students);
    
    	}
    
    }