com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `com.baomidou.mybatisplus.core.metadata.IPage
Caused by: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `com.baomidou.mybatisplus.core.metadata.IPage` (no Creators, like default construct, exist): abstract types either need to be mapped to concrete types, have custom deserializer, or contain additional type information
at [Source: (PushbackInputStream); line: 1, column: 1]
Mybatis-plus的 IPage，没有默认的构造器，通过feign调用时报错
解决方法就是用另一个类包装IPage对象，添加需要的IPage里的数据就行
原文：https://www.cnblogs.com/jadexu07/p/14838681.html