'Spring REST Service converts date-time to number

I have build an openapi schema in swagger with an field of type string and format: date-time. In the example window it shows me

"reportingDateTime": "2022-02-02T10:56:33.310Z"

. But when I call my service it responses

"reportingDateTime": 1639746778.200000000

I generate the spring api classes with the openapi-generator-maven-plugin version 5.1.0. The resulting response class has this field

@JsonProperty("reportingDateTime")
@org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
private OffsetDateTime reportingDateTime;

What shall a change to get the correct response type?

javaspringopenapiopenapi-generator


Solution 1:[1]

Jackson's default settings include formatting dates to timestamps. That's what you're seeing here.

Add the following to your application properties to turn this off:

spring.jackson.serialization.write-dates-as-timestamps=false

Solution 2:[2]

I think using DateTimeFormat for json response may be wrong.

Try to read this article - https://www.baeldung.com/jackson-serialize-dates#java-8

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Rob Spoor
Solution 2 dimamj

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