java实现Object和Map之间的转换3种方式

public static Object mapToObject(Map<String, Object> map, Class<?> beanClass)      throws Exception {    if (map == null)      return null;    Object obj = beanClass.newInstance();    org.apache.commons.beanutils.BeanUtils.populate(obj, map);    return obj;  }  public static Map<?, ?> objectToMap(Object obj) {    if (obj == null) {      return null;    }    return new org.apache.commons.beanutils.BeanMap(obj);  }