解决报错：nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException:

错误详情：

org.springframework.http.converter.HttpMessageConversionException: Type definition error: [simple type, class org.hibernate.proxy.pojo.bytebuddy.ByteBuddyInterceptor]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class org.hibernate.proxy.pojo.bytebuddy.ByteBuddyInterceptor and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS)

原因：Json把懒加载也作为POJO进行序列化了。

解决方法：在该实体类的所有关联集合类上加上

@JsonIgnoreProperties（{“ hibernateLazyInitializer”，“ handler”}）