package com.sp.util;

/*

 *    author:hingwu

 *  email:hing3@163.com

 *  QQ:550598

 *  MSN:hing3wu@hotmail.com（很少开）

*/

import java.io.FileInputStream;

import java.io.InputStream;

import java.lang.reflect.Method;

import java.util.ArrayList;

import java.util.Date;

import java.util.List;

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;

import exceptions.MyException;

public class ParseXMLToObject {

    public ParseXMLToObject(){}

    @SuppressWarnings("unchecked")

    public List getObject(String name,String path,String className){

        DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();

        dbf.setIgnoringElementContentWhitespace(true);

        DocumentBuilder db=null;

        Document doc=null;

        InputStream is=null;

        try {

            List list=new ArrayList();

            db=dbf.newDocumentBuilder();

            is=new FileInputStream(this.getClass().getResource(path).getPath());

            doc=db.parse(is);

            //根据要取的对象名称获取相应的节点列表

            NodeList nodes=doc.getElementsByTagName(name);

            if(nodes==null){

                throw new MyException("null nodes with tagName "+name);

            }

            for(int i=0;i<nodes.getLength();i++){

                Element node=(Element) nodes.item(i);

                Class cls=Class.forName(className);

                Object obj=cls.newInstance();

                //获取节点下的所有子节点

                NodeList childs=node.getChildNodes();

                if(childs==null){

                    throw new MyException("null childs! "+node);

                }

                for(int j=0;j<childs.getLength();j++){

                    if(!childs.item(j).getNodeName().equals("#text")){

                        Element child=(Element)childs.item(j);

                        String childName=child.getNodeName();

                        String type=child.getAttribute("type");

                        String value=child.getAttribute("value");

                        Object valueObj=typeConvert(type,value);

                        String methodName="set"+Character.toUpperCase(childName.charAt(0))+childName.substring(1);

                        System.out.println("methodName="+methodName+", class="+Class.forName(type));

                        Method method=cls.getMethod(methodName, Class.forName(type));

                        method.invoke(obj, new Object[]{valueObj});

                    }

                }

                list.add(obj);

            }

            return list;

        } catch (Exception e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

            return null;

        }

    }
    

//此方法用于将一个字符串转换为相应的数据类型

    @SuppressWarnings("deprecation")

    public Object typeConvert(String className,String value){

        if(className.equals("java.lang.String")){

            return value;

        }

        else if(className.equals("java.lang.Integer")){

            return Integer.valueOf(value);

        }

        else if(className.equals("java.lang.Long")){

            return Long.valueOf(value);

        }

        else if(className.equals("java.lang.Boolean")){

            return Boolean.valueOf(value);

        }

        else if(className.equals("java.util.Date")){

            return new Date(value);

        }

        else if(className.equals("java.lang.Float")){

            return Float.valueOf(value);

        }

        else if(className.equals("java.lang.Double")){

            return Double.valueOf(value);

        }else return null;

    }

}

Subject类的代码：

package com.sp.pojo;

public class Subject {

    private String port;

    private String servletName;

    public String getPort() {

        return port;

    }

    public void setPort(String port) {

        this.port = port;

    }

    public String getServletName() {

        return servletName;

    }

    public void setServletName(String servletName) {

        this.servletName = servletName;

    }

    public Subject(){}

    @Override

    public String toString() {

        // TODO Auto-generated method stub

        return port+","+servletName;

    }

}