Java解析xml文件通过dom4j解析实体类

导入jar包

 
            org.dom4j
            dom4j
            2.1.3
        

实体类

package com.zyz.test;

public class User {
	private int id;
	private String name;
	private String password;
	
	
	@Override
	public String toString() {
		return "User [id=" + id + ", name=" + name + ", password=" + password + "]";
	}
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	
}

解析代码

	public static void readerXml() {
		//1.创建Reader对象
		SAXReader reader=new SAXReader();
		try {
		    //2.加载xml
			Document doc=reader.read(new File("src/com/zyz/test/test.xml"));
			//3.获取根节点
			Element rootElement=doc.getRootElement();
			 // rootElement.elements()获取根节点下所有的节点，
			
			
			//获取节点bean下属性为class的值
			Element beanElement=rootElement.element("bean");
			Attribute attr=beanElement.attribute("class");
			
			String classpath=attr.getText();//获取内路径
			
			//通过反射得到类
			Class clazz=Class.forName(classpath);
			//通过无参构造 
			Object o=clazz.newInstance();
			
			List propertylist=beanElement.elements("property");
			 //依次遍历根节点下的节点 
			for (Element element : propertylist) {
				//获取name
				Attribute name=element.attribute("name");
//				System.out.println(name.getText());
				//获取value
				Attribute value=element.attribute("value");
				String values=value.getText();
				//使用属性名来 给object 传入值
				Field fied=clazz.getDeclaredField(name.getText());
				//可以让私有属性可以使用
				fied.setAccessible(true);
				
				if(fied.getType()==int.class) {
					fied.set(o, Integer.parseInt(values));
				}else if (fied.getType()==String.class) {
					fied.set(o, values);
				}
				
			}
			
			System.out.println(o);		
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}