问题：

java.lang.InternalError: com.fasterxml.jackson.databind.JsonMappingException: Can not construct instance of *****, problem: abstract types either need to be mapped to concrete types, have custom deserializer, or be instantiated with additional type information

解决：

给抽象类或接口增加@JsonTypeInfo

 

参考：

http://blog.csdn.net/sdyy321/article/details/40298081