@JsonFormat is not parsing ZonedDateTime correctly

Question

I am having this DTO:

public class TransactionRequestDTO {
    
   private ZonedDateTime authDate;

    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSZ")
     @JsonProperty("authDate")
     public void setAuthDate(String authDate) {
     this.authDate = ZonedDateTime.parse(authDate);
   }
}

I am making REST API call with this json:

{
  "instrumentDate": "2020-02-28T05:50:24.000+02:00"
}

But I am receiving the Date as "2020-02-28T05:50:24.000+0200" in setAuthDate() (without ':').

Hence it is giving exception:

'java.time.format.DateTimeParseException' at ZonedDateTime.parse(authDate).

Answer 1

The Date & time represented in the string 2020-02-28T05:50:24.000+02:00 is of ISO-8601 format, so you can simply use OffsetDateTime

@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSZ")
 @JsonProperty("authDate")
 public void setAuthDate(String authDate) {
 this.authDate = OffsetDateTime.parse(authDate);
}

In case if you want to still format into ZonedDateTime , just use the DateTimeFormatter with correct pattern

 @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSZ")
 @JsonProperty("authDate")
 public void setAuthDate(String authDate) {
    DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSXXX");
    this.authDate = ZonedDateTime.parse(authDate,formatter);
 }

Answer 2

Your pattern is not correct. Change it to one of the following patterns:

yyyy-MM-dd'T'HH:mm:ss.SSSXXX

or

yyyy-MM-dd'T'HH:mm:ss.SSSZZZZZ

Demo:

import java.time.OffsetDateTime;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Locale;

public class Main {
    public static void main(String[] args) {
        DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSXXX", Locale.ENGLISH);
        String strDateTime = "2020-02-28T05:50:24.000+02:00";

        OffsetDateTime odt = OffsetDateTime.parse(strDateTime, dtf);
        System.out.println(odt);

        ZonedDateTime zdt = ZonedDateTime.parse(strDateTime, dtf);
        System.out.println(zdt);
    }
}

Output:

2020-02-28T05:50:24+02:00
2020-02-28T05:50:24+02:00

Also, since your date-time is with a timezone offset of +02:00 hours, you should consider using OffsetDateTime instead of ZonedDateTime . Some databases eg PostgreSQL do not support ZonedDateTime , Instant and OffsetTime / TIME [ WITHOUT TIMEZONE ] .