How to read nested Json using scala?

Question

I am using scala to separate json. I have following Json structure-

"commands":{
"myinfo": [
    {
        "utilization": {
            "sizeBytes": 998848331776,
            "usedBytes": 408722341888,
            "freeBytes": 590125989888
        },
        "name": "ds1",
        "addons": [
            "PQR",
            "ABC"
        ],
        "otherInfo": {
            "model": "MRSASRoMB-4i",
            "name": "naa.6d867d9c7acd60001aed76eb2c70bd53",
            "vendor": "LSI"
        }
    }
]
}}

I want to read value of otherInfo, utilization etc. I can read value of name using following code-

val commandInfo = (rawData \ "Commands").as[JsValue]
(commandInfo \ "myInfo").as[List[JsObject]].map { myJson =>
val name =  (myJson \  "name").asOpt[String]
}

I am using case classes in scala. How do I get values of 'otherInfo','addons' etc using scala?

which library are you using in Scala for handling JSON? Looking at your code, perhaps you are using Play framework. Can you confirm and also checkout this playframework.com/documentation/2.2.x/ScalaJson — tuxdna
– tuxdna, Commented Sep 27, 2014 at 19:48

Wilfred Springer · Accepted Answer · 2014-09-26 13:17:39Z

1

Are you using dispatch's JSON support? If so, then you might want to consider using json4s instead, which is little like the de facto standard.

I personally would consider trying to use SON of JSON instead, which would make getting the name out a breeze:

commands.myinfo.otherinfo.name.as[String]

… but then again, that's a shameless plug for something I wrote myself. ;-)

edited Sep 26, 2014 at 13:17

answered Sep 26, 2014 at 12:58

Wilfred Springer

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