Converting JSON string to Java Object: Java

Question

I have a String

String aString = "[{code:32022,estCode:0,timeZone:CE},{code:59400,estCode:0,timeZone:CE},{code:59377,estCode:0,timeZone:CE},{code:59525,estCode:0,timeZone:CE},{code:59560,estCode:0,timeZone:CE}]"

I am trying to convert this string to Map[] using gson.

I tried using

Gson gsn = new GsonBuilder().create();
Map[] b = gsn.fromJson(aString , Map[].class);

I am able to parse it properly and I am getting output as

[{code=32022.0, estCode=0.0, timeZone=CE}, {code=59400.0, estCode=0.0, timeZone=CE}, {code=59377.0, estCode=0.0, timeZone=CE}, {code=59525.0, estCode=0.0, timeZone=CE}, {code=59560.0, estCode=0.0, timeZone=CE}]

but the values are converted to double i need it as String. Ex: 32022 is converted to 32022.0 i need it as 32022 is there any way i can do it using ExclusionStrategy in gson. I am seeing only two methos availalbe in ExclusionStrategy, shouldSkipClass and shouldSkipField is there any other way to do it using gson.

Please help

Possible duplicate of Gson. Deserialize integers as integers and not as doubles — Tschallacka
– Tschallacka, Commented Jan 8, 2016 at 11:13
map follow key value but you have 3 attribute in your json element {code:32022,estCode:0,timeZone:CE}, what kind of map you want. — Nikhi K. Bansal
– Nikhi K. Bansal, Commented Jan 8, 2016 at 11:19
What is type of "code" field in Map object String or double? Can you provide code of Map Object.? — Kishan Vaghela
– Kishan Vaghela, Commented Jan 8, 2016 at 11:37

Leonid Glanz · Accepted Answer · 2016-01-08 12:12:57Z

There is no way to change the type of the values, but you could use an own class for that like this:

public static void main(String[] args) {
        String aString = "[{code:32022,estCode:0,timeZone:CE},{code:59400,estCode:0,timeZone:CE},{code:59377,estCode:0,timeZone:CE},{code:59525,estCode:0,timeZone:CE},{code:59560,estCode:0,timeZone:CE}]";
        Gson gsn = new GsonBuilder().create();
        TimeCode[] b =  gsn.fromJson(aString, TimeCode[].class);
        for(TimeCode entry:b){
                System.out.print(entry+",");
        }

    }

    class TimeCode{
        String code;
        String estCode;
        String timeZone;

        public String toString(){
            return "code="+code+",estCode="+estCode+",timeZone="+timeZone;
        }
    }

Output:

code=32022,estCode=0,timeZone=CE,code=59400,estCode=0,timeZone=CE,code=59377,estCode=0,timeZone=CE,code=59525,estCode=0,timeZone=CE,code=59560,estCode=0,timeZone=CE,

I hope it helps.

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