org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deseria

org.springframework.http.converter.HttpMessageNotReadableException:
JSON parse error: Cannot deserialize value of type `java.util.Date` from String “NULL”: not a valid representation
(error: Failed to parse Date value ‘NULL’: Unparseable date: “NULL”);
nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `java.util.Date` from String “NULL”: not a valid representation (error: Failed to parse Date value ‘NULL’: Unparseable date: “NULL”)
at [Source: (PushbackInputStream); line: 16, column: 14] (through reference chain: com.starsaiot.battery.entity.PledgeOrder[“payTime”])
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I encountered this problem in a project where the front-end and back-end are separated
The front-end input data is “payTime”: “NULL”,
“tradeNum”: “null”,
“updateTime”: “2021-08-17 16:39:50”,
“updated”: “null”,
The console reports this error
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The reason for the error: the type of payTime is not correct, this capital NULL is the data I copied from the database and put in every too much attention, it should be consistent with the following null.

 


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