Java でオブジェクトをマップに変換する方法 - BeanMap を使用する

/**
* 将对象装换为map
* @param bean
* @return
*/
public static Map beanToMap(T bean) {
Map map = Maps.newHashMap();
if (bean != null) {
BeanMap beanMap = BeanMap.create(bean);
for (Object key : beanMap.keySet()) {
map.put(key+"", beanMap.get(key));
}
}
return map;
}

/**
* 将map装换为javabean对象
* @param map
* @param bean
* @return
*/
public static T mapToBean(Map map,T bean) {
BeanMap beanMap = BeanMap.create(bean);
beanMap.putAll(map);
return bean;
}

/**
* 将List转换为List>
* @param objList
* @return
* @throws JsonGenerationException
* @throws JsonMappingException
* @throws IOException
*/
public static List> objectsToMaps(List objList) {
List> list = Lists.newArrayList();
if (objList != null && objList.size() > 0) {
Map map = null;
T bean = null;
for (int i = 0,size = objList.size(); i < size; i++) {
bean = objList.get(i);
map = beanToMap(bean);
list.add(map);
}
}
return list;
}

/**
* 将List>转换为List
* @param maps
* @param clazz
* @return
* @throws InstantiationException
* @throws IllegalAccessException
*/
public static List mapsToObjects(List> maps,Class clazz) throws InstantiationException, IllegalAccessException {
List list = Lists.newArrayList();
if (maps != null && maps.size() > 0) {
Map map = null;
T bean = null;
for (int i = 0,size = maps.size(); i < size; i++) {
map = maps.get(i);
bean = clazz.newInstance();
mapToBean(map, bean);
list.add(bean);
}
}
return list;
}