【踩坑日记Exception之Lombok与JSR303检验之间的恩怨情仇】(JSON parse error: Cannot construct instance of `xxx.entity`)

sweet987250

于 2022-09-05 19:13:03 发布

阅读量508

点赞数 1

分类专栏： Exception 文章标签： java java-ee spring boot

本文链接：https://blog.youkuaiyun.com/sweet987250/article/details/126711475

版权

Exception 专栏收录该内容

1 篇文章

订阅专栏

博客讨论了Lombok的@Data注解与JSR303校验注解(@NotEmpty)如何相互作用，导致实体类失去无参构造器，进而引起JSON反序列化失败的问题。当Lombok遇到JSR303的注解时，原本应生成的无参构造器被替换为包含校验注解的有参构造器，从而在SpringMVC中引发转化错误。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

报错信息

JSON parse error: Cannot construct instance of xxx.entity.BrandEntity (although at least one Creator exists): cannot deserialize from Object value (no delegate- or property-based Creator); nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of xxx.entity.BrandEntity (although at least one Creator exists): cannot deserialize from Object value (no delegate- or property-based Creator)\n at [Source: (PushbackInputStream); line: 1, column: 2