1. Phenomenon
Spring Boot accesses Redis, and an error occurred when fetching the object
Error message:
Caused by: : Unrecognized field "headPart"
at (:61)
at (:823)
at (:1153)
at (:1589)
at (:1567)
at (:294)
at (:151)
at ._deserialize(:116)
at (:71)
at $(:712)
at (:68)
at ._readMapAndClose(:4013)
at (:3129)
at .(:73)
... 39 common frames omitted
2. Troubleshooting
At first I thought I forgot to writeimplements Serializable, this is not the problem after checking.
Then I thought I forgot to write the get set method, and it was not the case after checking it.
Finally, I found the details:
Unrecognized field "headPart"
That is to say, the attribute headPart cannot be recognized
Suddenly I realized that I wrote a method getHeadPart, but it does not have the headPart attribute
3. Solve
Change getHeadPart to makeHeadPart...
Serialization tools like jackson rely on reflection to identify method properties. Methods starting with get are easy to mislead serialization tools.
Summarize
The above is personal experience. I hope you can give you a reference and I hope you can support me more.