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Parse nested json object to data class
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Setting(title=Sample Temp Setting, info=[TimeRange(from=07:00, to=18:00, temp=8), TimeRange(from=18:00, to=00:00, temp=10), TimeRange(from=00:00, to=07:00, temp=12)]) | |
Title: Sample Temp Setting | |
* 07:00 to 18:00 -> 8 C | |
* 18:00 to 00:00 -> 10 C | |
* 00:00 to 07:00 -> 12 C |
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import com.alibaba.fastjson.JSON | |
data class Setting ( | |
val title: String, | |
val info: List<TimeRange> | |
) | |
data class TimeRange ( | |
val from: String, | |
val to: String, | |
val temp: Int | |
) | |
fun main () { | |
// #1 build from data class | |
val setting = Setting( | |
"Sample Temp Setting", | |
listOf( | |
TimeRange("07:00", "18:00", 8), | |
TimeRange("18:00", "00:00", 10), | |
TimeRange("00:00", "07:00", 12) | |
) | |
) | |
// println(setting) | |
// #2 create json string | |
val s = """ | |
{ | |
title: 'Sample Temp Setting', | |
info: [ | |
{ from: '07:00', to: '18:00', temp: 8, }, | |
{ from: '18:00', to: '00:00', temp: 10, }, | |
{ from: '00:00', to: '07:00', temp: 12, }, | |
] | |
} | |
""".trimIndent() | |
// println(s) | |
// #3 parse to jsonObject | |
val o = JSON.parseObject(s) | |
// println(o) | |
// #4 parse to data class | |
val oo = JSON.parseObject(s, Setting::class.javaObjectType) | |
println(oo) | |
println("Title: ${oo.title}") | |
oo.info.forEach { | |
println(" * ${it.from} to ${it.to} -> ${it.temp} C") | |
} | |
} |
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