[GROOVY-10208] Add LocalDate/LocalTime/LocalDateTime support in JsonBuilder

• Type: Improvement
• Status: Closed
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 3.0.8
• Labels: json jsonBuilder
• Assignee: Unassigned
• Reporter: A. Lepe
• Created: 30/Aug/21 06:44
• Updated: 08/Mar/22 12:16
• Resolved: 30/Aug/21 10:22

Description

Json classes in `groovy.json` do not support `LocalDate`, `LocalTime`, `LocalDateTime`, etc classes.

Classes like `Date`, `Calendar` and `SimpleDateFormat` are used, which (as you know) are no longer recommended. It would be nice to replace those classes with the recommended ones.

Affected classes:

• DefaultJsonGenerator
• JsonGenerator
• JsonOutput

 

Example:

// Setting date and time in JSON:

def map = [
    date : LocalDateTime.now()
]

def json = new JsonBuilder(map).toPrettyString()
println json

// prints:

{
    "date": {
        "dayOfYear": 242,
        "month": "AUGUST",
        "second": 56,
        "hour": 15,
        "nano": 337326000,
        "year": 2021,
        "dayOfMonth": 30,
        "minute": 51,
        "monthValue": 8,
        "dayOfWeek": "MONDAY",
        "chronology": {
            "calendarType": "iso8601",
            "id": "ISO"
        }
    }
}

// Parsing that object with JsonSlurper:
def importMap = new JsonSlurper().parseText(json)

println importMap.date

// prints:

[dayOfYear:242, month:AUGUST, second:56, hour:15, nano:337326000, year:2021, dayOfMonth:30, minute:51, monthValue:8, dayOfWeek:MONDAY, chronology:[calendarType:iso8601, id:ISO]]