Jackson 2.3.2: Issue with deserializing a Date despite of setting the date format to ObjectMapper

17,365

I got the same error, this solved my problem

mapper.setDateFormat(myDateFormat)

http://wiki.fasterxml.com/JacksonFAQDateHandling

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Updated on July 09, 2022

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  • Admin
    Admin almost 2 years

    I am using rest easy and want to serialize and deserialize dates.

    After creating my json provider, Serializing is working fine but deserializing is still not working.

    My JsonProvider class:

    @Provider
    @Produces(MediaType.APPLICATION_JSON)
    public class JsonProvider extends JacksonJaxbJsonProvider {
    
       public JsonProvider() {
    
          ObjectMapper mapper = new ObjectMapper();
          mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
          mapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
          mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
          mapper.setDateFormat("dd MMM, yyyy hh:mm:ss a";
    
          super.setMapper(mapper);
       }
    }
    

    Input date: 09 Sep, 2014 11:00:00 AM

    Error: com.fasterxml.jackson.databind.exc.InvalidFormatException: Can not construct instance of java.util.Date from String value '09 Sep, 2014 11:00:00 AM': not a valid representation (error: Failed to parse Date value '09 Sep, 2014 11:00:00 AM': Can not parse date "09 Sep, 2014 11:00:00 AM": not compatible with any of standard forms ("yyyy-MM-dd'T'HH:mm:ss.SSSZ", "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", "EEE, dd MMM yyyy HH:mm:ss zzz", "yyyy-MM-dd"))

    I came across this workaround but if I use this then I have to annotate every date field in my app which I feel is an overhead.

    I am not able to figure out what I am doing wrong.

    Any help would be appreciated.

    Thanks.