How to deserialize JS date using Jackson

Question

I m getting a date string from ExtJS in the format        2011-04-08T09 00 00    when i try to deserialize this date  it changes the timezone to Indian Standard Time  adds  5 30 to the time    This is how i m deserializing the date   SimpleDateFormat dateFormat   new SimpleDateFormat  yyyy-MM-dd T HH mm ss    getObjectMapper   getDeserializationConfig   setDateFormat dateFormat     Doing this also doesn t change the timezone  I still get the date in IST   SimpleDateFormat dateFormat   new SimpleDateFormat  yyyy-MM-dd T HH mm ss    dateFormat setTimeZone TimeZone getTimeZone  GMT     getObjectMapper   getDeserializationConfig   setDateFormat dateFormat     How do I deserialize the date in the way in which it is coming without the hassles of Timezone

User · Answer

This works for me - i am using jackson 2 0 4  ObjectMapper objectMapper   new ObjectMapper    final DateFormat df   new SimpleDateFormat  yyyy-MM-dd T HH mm ss    objectMapper setDateFormat df

User · Answer

There is a good blog about this topic  http   www baeldung com jackson-serialize-dates  Use  JsonFormat looks the most simple way   public class Event       public String name        JsonFormat        shape   JsonFormat Shape STRING  pattern    dd-MM-yyyy hh mm ss       public Date eventDate

User · Answer

In addition to Varun Achar s answer  this is the Java 8 variant I came up with  that uses java time LocalDate and ZonedDateTime instead of the old java util Date classes   public class LocalDateDeserializer extends JsonDeserializer lt LocalDate gt          Override     public LocalDate deserialize JsonParser jsonparser  DeserializationContext deserializationcontext  throws IOException            String string   jsonparser getText             if string length    gt  20                ZonedDateTime zonedDateTime   ZonedDateTime parse string               return zonedDateTime toLocalDate                       return LocalDate parse string

User · Answer

I found a work around but with this I ll need to annotate each date s setter throughout the project  Is there a way in which I can specify the format while creating the ObjectMapper   Here s what I did   public class CustomJsonDateDeserializer extends JsonDeserializer lt Date gt         Override     public Date deserialize JsonParser jsonParser              DeserializationContext deserializationContext  throws IOException  JsonProcessingException            SimpleDateFormat format   new SimpleDateFormat  yyyy-MM-dd T HH mm ss            String date   jsonParser getText            try               return format parse date             catch  ParseException e                throw new RuntimeException e                         And annotated each Date field s setter method with this    JsonDeserialize using   CustomJsonDateDeserializer class

User · Answer

JsonFormat only work for standard format supported by the jackson version that you are using   Ex  - 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    for jackson 2 8 6

[java] How to deserialize JS date using Jackson?

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