DaTaobao Tech
Jun 24, 2022 · Backend Development
Random Fastjson Deserialization Failure Caused by Constructor Order
The article explains that Fastjson sometimes throws a syntax‑error exception when deserializing a JSON list of StewardTipCategory objects because the JVM returns overloaded constructors in nondeterministic order, causing Fastjson to pick the wrong constructor; removing or renaming the ambiguous constructor fixes the issue.
BackendConstructorOrderDebugging
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