BeanUtils.java

package com.fang.bbks.common.persistence.jdbc;

import java.beans.BeanInfo;
import java.beans.IntrospectionException;
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;

/**
 * @Intro descrption here
 * @author Lee
 * @Date 2013-8-13
 */
public class BeanUtils {
	private static final BeanUtils instant=new BeanUtils();
	
	private BeanUtils(){
	}
	
	public static final BeanUtils getInstance(){
		return instant;
	}
	
    public Map<String,Object> describe(Object bean) throws IntrospectionException, IllegalAccessException, IllegalArgumentException, InvocationTargetException  {
        if (bean == null) {
            return (new HashMap<String,Object>());
        }
        BeanInfo info = Introspector.getBeanInfo(bean.getClass());
        Map<String,Object> description = new HashMap<String,Object>();
        PropertyDescriptor[] descriptors =
        		info.getPropertyDescriptors();
        for (int i = 0; i < descriptors.length; i++) {
            String name = descriptors[i].getName();
            Method reader = descriptors[i].getReadMethod();
            if ( reader!= null) {
            	Object value = reader.invoke(bean, null);
                description.put(name, value);
            }
        }
        description.remove("class");
        return (description);

    }
}