xml+反射dom解析案例

 

package day2;

import java.lang.reflect.Field;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

public class TestAccountReflector {
   public static void main(String args[])throws Exception{
   //1
    DocumentBuilderFactory db = DocumentBuilderFactory.newInstance();
   
    DocumentBuilder d = db.newDocumentBuilder();
   
    Document document = d.parse("./src/day2/account.xml");
   
    Element root = document.getDocumentElement();
   
    NodeList nl = root.getChildNodes();
   
    //1
     Class c = Class.forName("day2.Account");
     Account account =(Account) c.newInstance();
   
    for(int i=0;i<nl.getLength();i++){
     if(nl.item(i) instanceof Element){
      Element e = (Element)nl.item(i);
      Field f = c.getDeclaredField(e.getTagName());
      if(f.getType().toString().equals("int")){
       f.setAccessible(true);
       f.set(account,Integer.parseInt(e.getTextContent()));
      }else{
         f.setAccessible(true);
         f.set(account,e.getTextContent());
      } 
     }
    }
   
    System.out.println(account.getId());
    System.out.println(account.getAccountName());
    System.out.println(account.getPassword());
    System.out.println(account.getBalance());
   
   
   }
}