Simple Java Json to Array

Question

I'm stuck on something silly I'd appriciate some help with,

I'm getting this string via a stringified object in javascript:

{"63F67024-6FE1-D1B9-41D2-61156F11089A":0,"7cc8732e-d532-463e-9b5e-38fe14664b9e":1,"7CC40FFC-7BED-82DF-41C3-78C2BE8CD901":2,"f7344b33-860a-4934-b1f8-044b80a7b894":3,"31f65628-12b1-4363-848d-2bce07b8ac30":4,"7CF2DCA9-7BEC-8566-41A2-4898E5C110BC":5,"7D1C42ED-7BED-82FE-41D2-5045E9F0C13F":6,"D4EC2E5B-D807-2F30-41EA-6A4D9278BE81":7,"91ACF8F7-9516-F12F-41C1-BF57E6F223BE":8,"28d65730-9da0-457b-9d25-0f33628c0e5c":9,"57D44260-6D6D-E0E0-4171-71080149751C":10}

What's the cleanest, simplest way to convert this into an array of objects?

I've started doing something ugly by just removing the unwanted characters and doing something like this:

        List<String> list = new ArrayList<String>(Arrays.asList(value.split(",")));

    for(String s : list)
        System.out.println(s);

But I'm sure there is a cleaner, simpler way ideally with GSON

What's your expeted array output?

The Coder
– The Coder

2015-10-08 07:03:58 +00:00
Commented Oct 8, 2015 at 7:03 — The Coder
– The Coder, Commented Oct 8, 2015 at 7:03
String array[]=value.split(","); simplest way

Rustam
– Rustam

2015-10-08 07:07:36 +00:00
Commented Oct 8, 2015 at 7:07 — Rustam
– Rustam, Commented Oct 8, 2015 at 7:07
refer this studytrails.com/java/json/…

Pankaj Saboo
– Pankaj Saboo

2015-10-08 07:09:53 +00:00
Commented Oct 8, 2015 at 7:09 — Pankaj Saboo
– Pankaj Saboo, Commented Oct 8, 2015 at 7:09

Kris · Accepted Answer · 2015-10-08 07:03:59Z

1

Your JSON string looks like a simple list of key/value pairs. How about converting it to a Map

public static void jsonToMap(String t) throws JSONException {

        HashMap<String, String> map = new HashMap<String, String>();
        JSONObject jObject = new JSONObject(t);
        Iterator<?> keys = jObject.keys();

        while( keys.hasNext() ){
            String key = (String)keys.next();
            String value = jObject.getString(key); 
            map.put(key, value);

        }

        System.out.println("json : "+jObject);
        System.out.println("map : "+map);
    }

Hope it helps.

answered Oct 8, 2015 at 7:03

Kris

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2 Comments

beek Over a year ago

Awesome answer - above and beyond! Didn't know about maps, very useful.

Pankaj Saboo Over a year ago

jackson having ObjectMapper class which also doing this but it map the with the object and key name and object field name should be same for mapping code will be

Pankaj Saboo · Accepted Answer · 2015-10-08 07:17:22Z

1

jackson having ObjectMapper class which also doing this but it map the with the object and key name and object field name should be same for mapping code will be

import following package

org.codehaus.jackson.map.ObjectMapper;

call will be

ObjectMapper objectMapper = new ObjectMapper();
Yourclass classObj = objectMapper
                .readValue(jsonasString,Yourclass.class);

answered Oct 8, 2015 at 7:17

Pankaj Saboo

1,1951 gold badge8 silver badges28 bronze badges

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