e Exception Report
Message org.hibernate.PropertyNotFoundException: Could not resolve PropertyAccess for num on class java.util.HashMap
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
javax.persistence.PersistenceException: org.hibernate.PropertyNotFoundException: Could not resolve PropertyAccess for num on class java.util.HashMap
org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154)
原代码：（通过设置返回的格式为map 出错）
改为：
问题解决！！