java对象转Map方法

package org.apache.commons.beanutils;

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

/**
*
* @since 1.0
*/
public class PageBeanUtilsBean extends BeanUtilsBean {
@Override
public Map<String, Object> describe(Object bean) throws IllegalAccessException, InvocationTargetException,
NoSuchMethodException {

if (bean == null) {
//            return (Collections.EMPTY_MAP);
return (new java.util.HashMap<String, Object>());
}
Map<String, Object> description = new HashMap<String, Object>();
if (bean instanceof DynaBean) {
DynaProperty[] descriptors = ((DynaBean) bean).getDynaClass().getDynaProperties();
for (int i = 0; i < descriptors.length; i++) {
String name = descriptors[i].getName();
description.put(name, getProperty(bean, name));
}
} else {
PropertyDescriptor[] descriptors = getPropertyUtils().getPropertyDescriptors(bean);
Class clazz = bean.getClass();
for (int i = 0; i < descriptors.length; i++) {
String name = descriptors[i].getName();
if (getPropertyUtils().getReadMethod(clazz, descriptors[i]) != null) {
description.put(name, getPropertyUtils().getNestedProperty(bean, name));
}
}
}
return (description);

}
}