jackson deserializer not getting invoked

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I am getting the following error on Date deserialization in Java:

com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `java.util.Date` from String "22-09-2020T05:08:05+0000": not a valid representation (error: Failed to parse Date value '22-09-2020T05:08:05+0000': Cannot parse date "22-09-2020T05:08:05+0000": not compatible with any of standard forms ("yyyy-MM-dd'T'HH:mm:ss.SSSX", "yyyy-MM-dd'T'HH:mm:ss.SSS", "EEE, dd MMM yyyy HH:mm:ss zzz", "yyyy-MM-dd"))

My input date is in this format 22-09-2020T05:08:05+0000

I am using

 @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd-MM-yyyy'T'HH:mm:ssZ")
    OffsetDateTime lastAnalysisDate;

How to resolve this error ? Inspite of using custom JsonFormat, the error message says it is not of the standard data types.

I am using the date formatter validation tool online https://javadevtools.com/simpledateformat

And the format I specified is valid as per this evaluation tool

jackson date datetime java
1 Answers

The issue is very likely consisting not in the date format but in the configuration of the ObjectMapper where you have to register JavaTimeModule to process classes from java.time package:

Example:

public class TestOffsetDate {
    @Getter
    @Setter
    static class D {
        @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd-MM-yyyy'T'HH:mm:ssZ")
        private OffsetDateTime lastAnalysisDate;
    }

    public static void main(String[] args) {
        ObjectMapper mapper = new ObjectMapper();
        mapper.registerModule(new JavaTimeModule()); // <--- this is required

        String json = "{\"lastAnalysisDate\":\"22-09-2020T05:08:05+0000\"}";
        D d = mapper.readValue(json, D.class);
        System.out.println(mapper.writerWithDefaultPrettyPrinter().writeValueAsString(d));
    }
}

Parsing of the sample JSON succeeds, the following output is printed:

{
  "lastAnalysisDate" : "22-09-2020T05:08:05+0000"
}
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