CODEWITHSUNDEEP
androidjsongson
PCS
PCS

Reputation: 211

Reading Gson from json string

JSON Response String:

{
    "1": {
        "registered_name": "Manchester Cars",
        "search_tag": null,
        "town": "Manchester",
        "distance": "1.03782874345779",
        "capacity": 4,
        "first_address_line": null,
        "price": "165.00",
        "cost_per_person": "165.00",
        "trip_direction": 1,
        "mco_id": "826",
        "tag": ""
    },
    "2": {
        "registered_name": "Avon Cars",
        "search_tag": null,
        "town": "Solihull",
        "distance": "3.39530396461487",
        "capacity": 4,
        "first_address_line": null,
        "price": "140.82",
        "cost_per_person": "140.82",
        "trip_direction": 1,
        "mco_id": "670",
        "tag": ""
    },
    "3": {
        "registered_name": "BBS Executive",
        "search_tag": null,
        "town": "Birmingham",
        "distance": "11.7371127605438",
        "capacity": 4,
        "first_address_line": null,
        "price": "186.17",
        "cost_per_person": "186.17",
        "trip_direction": 1,
        "mco_id": "615",
        "tag": ""
    },
    "4": {
        "registered_name": "Sky Cars",
        "search_tag": null,
        "town": "Birmingham",
        "distance": "14.4878869056702",
        "capacity": 4,
        "first_address_line": null,
        "price": "179.13",
        "cost_per_person": "179.13",
        "trip_direction": 1,
        "mco_id": "822",
        "tag": ""
    },
    "": {
        "registered_name": "Eco Cars Manchester",
        "search_tag": null,
        "town": "Stockport",
        "distance": "9.5043933391571",
        "capacity": 4,
        "first_address_line": null,
        "price": "155.00",
        "cost_per_person": "155.00",
        "trip_direction": 1,
        "mco_id": "774",
        "tag": ""
    }
}

I want to convert this json response, i am using following GSON code but failed to convert,

Tried Solution 1

Gson gson = new Gson();         
Item[] itemList = gson.fromJson(jstring, Item[].class);    
Type collectionType = new TypeToken<Collection<Item>>(){}.getType();
List<Item> enums =  gson.fromJson(jstring, collectionType);

Tried Solution 2

Gson gson = new Gson();         
Item[] itemList = gson.fromJson(jstring, Item[].class);

Where jstring is json response printed above.

Failed: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 2

Upvotes: 0

Views: 722

Answers (2)

eugen
eugen

Reputation: 5916

You can try using Genson http://code.google.com/p/genson/. The following code should solve your problem.

Map<String, Item> itemsMap = new Genson().deserialize(jsonString, new GenericType<Map<String, Item>>() {});
// get all the items independently from their keys
Collection<Items> items = itemsMap.values();

Upvotes: 1

Furkan
Furkan

Reputation: 683

Your JSON Response is not a JSON Array. It is a JSON Object. That is the cause of your error. See www.json.org

Upvotes: 2

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