Allow java.time types for setting the Last-Modified header [SPR-17571]

[spring-projects-issues]

Lars Grefer opened SPR-17571 and commented

org.springframework.http.ResponseEntity.HeadersBuilder.lastModified and org.springframework.http.HttpHeaders.setLastModified only accept the date as long.

This long value is then internally converted to a java.time.Instant and a java.time.ZonedDateTime.

I propose to add overloads for the methods listed above which directly accept the "new" java.time types.

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Affects: 5.1.3

Issue Links:

• TaskScheduler interface should support java.time.Instant/Duration [SPR-14875] #19441 TaskScheduler interface should support java.time.Instant/Duration
• Overloaded convenience setters on HttpHeaders [SPR-16562] #21104 Overloaded convenience setters on HttpHeaders
• Consider using ZonedDateTime in HttpHeaders [SPR-15661] #20220 Consider using ZonedDateTime in HttpHeaders
• Consistent handling of null header values in HttpHeaders [SPR-17588] #22120 Consistent handling of null header values in HttpHeaders

Referenced from: pull request #2039, and commits a240cfc, 9abd4ed, 6a01214