```
/**
* java bean 转 Map
* @param bean
* @param propNames 需要放到 map 中的属性名称
* @return
*/
public static Map<String,Object> beanToMap(Object bean, String...propNames) {
Map<String,Object> rtn = new HashMap<String,Object>();
if(ArrayUtils.isEmpty(propNames)){
List<String> fieldNames = getFieldNames(bean.getClass());
for (String fieldName: fieldNames) {
Object value = getProperty(bean, fieldName);
rtn.put(fieldName, value);
}
}else{
for(String propName: propNames){
Object value = getProperty(bean, propName);
rtn.put(propName, value);
}
}
return rtn;
}
```