object轉map類型

/**
 * 將一個 JavaBean 對象轉化為一個  Map
 *
 * @param bean 要轉化的JavaBean 對象
 * @return 轉化出來的  Map 對象
 * @throws IntrospectionException    如果分析類屬性失敗
 * @throws IllegalAccessException    如果實例化 JavaBean 失敗
 * @throws InvocationTargetException 如果調用屬性的 setter 方法失敗
 */
public static Map convertBean(Object bean)
        throws IntrospectionException, IllegalAccessException, InvocationTargetException {
    Class type = bean.getClass();
    Map returnMap = new HashMap();
    BeanInfo beanInfo = Introspector.getBeanInfo(type);

    PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
    for (int i = 0; i < propertyDescriptors.length; i++) {
        PropertyDescriptor descriptor = propertyDescriptors[i];
        String propertyName = descriptor.getName();
        if (!propertyName.equals("class")) {
            Method readMethod = descriptor.getReadMethod();
            Object result = readMethod.invoke(bean, new Object[0]);
            if (result != null) {
                returnMap.put(propertyName, result);
            } else {
                returnMap.put(propertyName, "");
            }
        }
    }
    return returnMap;
}