Map 和 javaBean转换

package com.siang.util;

import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.beanutils.ConvertUtils;
import org.apache.commons.beanutils.converters.DateConverter;

public class BeanCopy {
	static
	{
		ConvertUtils.register(new DateConverter(), java.util.Date.class);
		ConvertUtils.register(new DateConverter(), java.sql.Date.class);
	}

	/**
	 * @1 map to bean
	 * @2 bean to bean 
	 * @3 bean to map
	 */
	public static void 	copyProperties(Object dest, Object orig){
		try {
			if  (dest instanceof Map ) {//3 bean to map
				transBean2Map((Map)dest,orig);
			}else {
				BeanUtils.copyProperties(dest, orig);
			}
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			e.printStackTrace();
		}
	}
	
	/**
	 * model to map
	 * @param orig
	 */
	private static void transBean2Map(Map dest , Object orig) {
		  try {  
	            BeanInfo beanInfo = Introspector.getBeanInfo(orig.getClass());  
	            PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();  
	            for (PropertyDescriptor property : propertyDescriptors) {  
	                String key = property.getName();  
	                // 过滤class属性  
	                if (!key.equals("class")) {  
	                    // 得到property对应的getter方法  
	                    Method getter = property.getReadMethod();  
	                    Object value = getter.invoke(orig);  
	                    dest.put(key, value);  
	                }  
	            }  
	        } catch (Exception e) {  
	            System.out.println("transBean2Map Error " + e);  
	        }  
		
	}

	public static void main(String[] args) {
		Map<String, Object> map= new HashMap<String, Object>();
		map.put("id", "1");
		map.put("name", "穿林渡水");
		User user = new User();
		copyProperties(user , map);
		System.out.println(user.getId() + "---" + user.getName());
		User user1 = new User();
		copyProperties(user1 , user);
		System.out.println(user1.getId());
		Map<String, Object> map2= new HashMap<String, Object>();
		copyProperties(map2 , user);
		System.out.println(map2);
	}
}