Date format in the json output using spring boot

Question

I am working on spring boot for creating a REST application  And I have a DTO as shown below   public class Subject    private String uid  private String number  private String initials  private Date dateOfBirth    And I use Spring-Hateos and the reurn type of my controller is ResponseEntity lt Resources lt Resource lt Subject gt  gt  gt   I need the date to be displayed in the  yyyy-mm-dd  format

User · Answer

Starting from Spring Boot version 1 2 0 RELEASE   there is a property you can add to your application properties to set a default date format to all of your classes spring jackson date-format   For your date format example  you would add this line to your properties file   spring jackson date-format yyyy-MM-dd   Reference https   docs spring io spring-boot docs 1 2 0 RELEASE reference html common-application-properties html

User · Answer

If you have Jackson integeration with your application to serialize your bean to JSON format  then you can use Jackson anotation  JsonFormat to format your date to specified format  In your case if you need your date into yyyy-MM-dd format you need to specify  JsonFormat above your field on which you want to apply this format     For Example      public class Subject         private String uid       private String number       private String initials         JsonFormat pattern  yyyy-MM-dd        private Date dateOfBirth            Other Code          From Docs         annotation used for configuring details of how values of properties   are to be serialized      More Reference Doc    Hope this helps

User · Answer

You most likely mean  yyyy-MM-dd  small latter  m  would imply minutes section    You should do two things    add spring jackson serialization write-dates-as-timestamps false in your application properties this will disable converting dates to timestamps  and instead use a ISO-8601 compliant format You can than customize the format by annotating the getter method of you dateOfBirth property with  JsonFormat pattern  yyyy-MM-dd

User · Answer

If you want to change the format for all dates you can add a builder customizer   Here is an example of a bean that converts dates to ISO 8601    Bean public Jackson2ObjectMapperBuilderCustomizer jsonCustomizer         return new Jackson2ObjectMapperBuilderCustomizer              Override         public void customize Jackson2ObjectMapperBuilder builder                builder dateFormat new ISO8601DateFormat

[java] Date format in the json output using spring boot

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