Set Jackson Timezone for Date deserialization

Question

I m using Jackson  via Spring MVC Annotations  to deserialize a field into a java util Date from JSON  The POST looks like -   enrollDate   2011-09-28T00 00 00 000Z    but when the Object is created by Spring  amp  Jackson it sets the date as  2011-09-27 20 00 00     How can I set the proper timezone in Jackson   Or if that is not the problem  how do I send EST from the JSON message    Javascript jQuery   var personDataView     enrollDate   new Date     enrollDate   val                                  other members                              postJSON   some path    personDataView  function data             handle the response here        JSON Message     enrollDate   2011-09-28T00 00 00 000Z    Spring Controller    RequestMapping value      method RequestMethod POST  public  ResponseBody String saveProfile  RequestBody personDataView persondataView  HttpServletRequest request                 dataView has a java util Date enrollDate field              other code

User · Answer

I am using Jackson 1 9 7 and I found that doing the following does not solve my serialization deserialization timezone issue   DateFormat dateFormat   new SimpleDateFormat  yyyy-MM-dd T hh mm ss SSSZ    dateFormat setTimeZone TimeZone getTimeZone  UTC     objectMapper setDateFormat dateFormat     Instead of  2014-02-13T20 09 09 859Z  I get  2014-02-13T08 09 09 859 0000  in the JSON message which is obviously incorrect   I don t have time to step through the Jackson library source code to figure out why this occurs  however I found that if I just specify the Jackson provided ISO8601DateFormat class to the ObjectMapper setDateFormat method the date is correct   Except this doesn t put the milliseconds in the format which is what I want so I sub-classed the ISO8601DateFormat class and overrode the format Date date  StringBuffer toAppendTo  FieldPosition fieldPosition    method           Provides a ISO8601 date format implementation that includes milliseconds        public class ISO8601DateFormatWithMillis extends ISO8601DateFormat               For serialization         private static final long serialVersionUID   2672976499021731672L       Override   public StringBuffer format Date date  StringBuffer toAppendTo  FieldPosition fieldPosition            String value   ISO8601Utils format date  true         toAppendTo append value         return toAppendTo

User · Answer

In Jackson 2   you can also use the  JsonFormat annotation     JsonFormat shape JsonFormat Shape STRING  pattern  yyyy-MM-dd T HH mm ss SSSZ   timezone  America Phoenix   private Date date

User · Answer

Your date object is probably ok  since you sent your date encoded in ISO format with GMT timezone and you are in EST when you print your date    Note that Date objects perform timezone translation at the moment they are printed  You can check if your date object is correct with   Calendar cal   Calendar getInstance TimeZone getTimeZone  GMT     cal setTime date   System out println  cal

User · Answer

Have you tried this in your application properties   spring jackson time-zone    Time zone used when formatting dates  For instance  America Los Angeles

User · Answer

I had same problem with Calendar deserialization  solved extending CalendarDeserializer   It forces UTC Timezone I paste the code if someone need it    JacksonStdImpl public class UtcCalendarDeserializer extends CalendarDeserializer        TimeZone TZ UTC   TimeZone getTimeZone  UTC          Override     public Calendar deserialize JsonParser jp  DeserializationContext ctxt  throws IOException  JsonProcessingException           JsonToken t   jp getCurrentToken            if  t    JsonToken VALUE NUMBER INT                Calendar cal   Calendar getInstance TZ UTC               cal clear                cal setTimeInMillis jp getLongValue                  return cal                     return super deserialize jp  ctxt             in JSON model class just annotate the field with    JsonDeserialize using   UtcCalendarDeserializer class  private Calendar myCalendar

User · Answer

If you really want Jackson to return a date with another time zone than UTC  and I myself have several good arguments for that  especially when some clients just don t get the timezone part  then I usually do   ObjectMapper mapper   new ObjectMapper    DateFormat dateFormat   new SimpleDateFormat  yyyy-MM-dd T HH mm ss SSSZ    dateFormat setTimeZone TimeZone getTimeZone  CET     mapper getSerializationConfig   setDateFormat dateFormat          etc   It has no adverse effects on those that understand the timezone-p

User · Answer

For anyone struggling with this problem in the now  Feb 2020   the following Medium post was crucial to overcoming it for us   https   medium com  ttulka spring-http-message-converters-customizing-770814eb2b55  In our case  the app uses  EnableWebMvc and would break if removed so  the section on  The Life without Spring Boot  was critical  Here s what ended up solving this for us  It allows us to still consume and produce JSON and XML as well as format our datetime during serialization to suit the app s needs    Configuration  ComponentScan  com company branch    EnableWebMvc public class WebMvcConfig implements WebMvcConfigurer     Override public void configureMessageConverters List lt HttpMessageConverter lt   gt  gt  converters        converters add 0  new MappingJackson2XmlHttpMessageConverter                  new Jackson2ObjectMapperBuilder                            defaultUseWrapper false                           createXmlMapper true                           simpleDateFormat  yyyy-mm-dd T HH mm ss Z                             build                   converters add 1  new MappingJackson2HttpMessageConverter                  new Jackson2ObjectMapperBuilder                            build

User · Answer

Just came into this issue and finally realised that LocalDateTime doesn t have any timezone information  If you received a date string with timezone information  you need to use this as the type   ZonedDateTime  Check this link

User · Answer

Looks like older answers were fine for older Jackson versions  but since objectMapper has method setTimeZone tz   setting time zone on a dateFormat is totally ignored  How to properly setup timeZone to the ObjectMapper in Jackson version 2 11 0  ObjectMapper objectMapper   new ObjectMapper    objectMapper setTimeZone TimeZone getTimeZone  quot Europe Warsaw quot      Full example    Test   void test   throws Exception       ObjectMapper objectMapper   new ObjectMapper        objectMapper findAndRegisterModules        objectMapper disable SerializationFeature WRITE DATES AS TIMESTAMPS       JavaTimeModule module   new JavaTimeModule        objectMapper registerModule module       objectMapper setTimeZone TimeZone getTimeZone  quot Europe Warsaw quot          ZonedDateTime now   ZonedDateTime now        String converted   objectMapper writeValueAsString now        ZonedDateTime restored   objectMapper readValue converted  ZonedDateTime class       System out println  quot serialized   quot    now       System out println  quot converted   quot    converted       System out println  quot restored   quot    restored        Assertions assertThat now  isEqualTo restored

[json] Set Jackson Timezone for Date deserialization

Examples related to json

Examples related to spring-mvc

Examples related to jackson