SpringBoot在反序列化过程中：com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct

最新推荐文章于 2025-06-25 11:13:27 发布

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最新推荐文章于 2025-06-25 11:13:27 发布 · 1w 阅读

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文章标签：

#jackson #serializer

前言

在SpringBoot整合redis的时候写使用RedisTemplate来操作缓存数据库redis，结果测试的时候报错。

异常如下

org.springframework.data.redis.serializer.SerializationException: Could not read JSON: Cannot construct instance of `com.wip.redis.dao.entity.User` (no Creators, like default construct, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
 at [Source: (byte[])"["com.wip.redis.dao.entity.User",{"id":59,"username":"admin","password":"123456"}]"; line: 1, column: 35]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `com.wip.redis.dao.entity.User` (no Creators, like default construct, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
 at [Source: (byte[])"["com.wip.redis.dao.entity.User",{"id":59,"username":"admin","password":"123456