How to parse date using 'dd-MMM-yyyy' with @JsonFormat in Java?

Question

how can I parse date to 'dd-MMM-yyyy' format using @JsonFormat from Jackson library? I am using Java 8 and Jackson 2.8.9.

Example: I would like to get: 2019-06-22T00:00:00Z -> 22-Jun-2019

I am using

@JsonFormat(pattern = "dd-MMM-yyy")
private Date myDate;

and I receive an exception:

JSON parse error: Can not deserialize value of type java.util.Date from String "2019-06-22T00:00:Z": expected format "dd-MMM-yyyy"

I thought I would be able to parse that date to expected format, but it looks like it is impossible in that way. Do you have any suggestions how can I do it? Im looking for the best approach. Can I do it using this annotation?

You have one format in your question, another in your code sample and none of them match the input String. If you have the date in a String to start with you must parse the incoming String first. Once you have it represented in an object you can format the output the way you want. But I am not sure that is what you are trying to achieve. — DanielBarbarian
– DanielBarbarian, Commented Jul 6, 2020 at 13:48
@DanielBarbarian: Sorry. It was a mistake in my code, now it's good format. This myDate variable is part of a model, I am looking for a way to do an instant parsing without additional methods or objects. — user5490674
– user5490674, Commented Jul 6, 2020 at 14:03
By the way, I suggest you educate the publisher of your data about the ISO 8601 standard formats to use when exchanging date-time values as text. — Basil Bourque
– Basil Bourque, Commented Jul 6, 2020 at 14:31

Govinda Sakhare · Accepted Answer · 2020-07-06 14:22:47Z

1

As you are on java 8, you should use LocalDate and not the old API.

@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd-MMM-yyyy")
private final LocalDate localDate;

I was able to de-serialize with Date API also. If it doesn't work, try updating jackson artifact.

answered Jul 6, 2020 at 14:22

Govinda Sakhare

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2 Comments

user5490674 Over a year ago

I did it the same like you did, but I've got an exception: java.time.format.DateTimeParseException: Text '2019-06-22T00:00:00Z' could not be parsed at index 2 - I added dependency jackson-datatype-jsr310 and created ObjectMapper Bean with JavaTimeModule().

Govinda Sakhare Over a year ago

Try updating Jackson.

Pavan Kalyan · Accepted Answer · 2020-07-06 17:32:39Z

0

use this library dateFormat

 dateFormat('your date variable', "mm/dd/yyyy")

always does the trick

answered Jul 6, 2020 at 17:32

Pavan Kalyan

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Pankaj Singh · Accepted Answer · 2024-11-05 05:59:31Z

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In java 8 and above you can use as follows:

 @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd-MM-yyyy")
private LocalDate month;

answered Nov 5, 2024 at 5:59

Pankaj Singh

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1 Comment

Anonymous Over a year ago

Repeating what Govinda Sakhare already said (a good idea, though).

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