CODEWITHSUNDEEP
javajsongsonarrays
jackyesind
jackyesind

Reputation: 3373

Convert json String to array of Objects

I have json array as string

[
        {
        "id":"1",   
            "lat": "23.053",
            "long": "72.629",
            "location": "ABC",
            "address": "DEF",
            "city": "Ahmedabad",
            "state": "Gujrat",
            "phonenumber": "1234567"
        },
        {
        "id":"2",   
            "lat": "23.053",
            "long": "72.629",
            "location": "ABC",
            "address": "DEF",
            "city": "Ahmedabad",
            "state": "Gujrat",
            "phonenumber": "1234567"
        },
        {
            "id":"3",   
        "lat": "23.053",
            "long": "72.629",
            "location": "ABC",
            "address": "DEF",
            "city": "Ahmedabad",
            "state": "Gujrat",
            "phonenumber": "1234567"
        },
        {
            "id":"4",   
        "lat": "23.053",
            "long": "72.629",
            "location": "ABC",
            "address": "DEF",
            "city": "Ahmedabad",
            "state": "Gujrat",
            "phonenumber": "1234567"
        },
        {
            "id":"5",   
        "lat": "23.053",
            "long": "72.629",
            "location": "ABC",
            "address": "DEF",
            "city": "Ahmedabad",
            "state": "Gujrat",
            "phonenumber": "1234567"
        }
]

I want to convert this string to each json object. I have a class address. How would i convert this json string to object

I tried

Address address = gson.fromJson(addressJson, Address.class);

com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was BEGIN_ARRAY at line 1 column 2
    com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:176)
    com.google.gson.Gson.fromJson(Gson.java:803)
    com.google.gson.Gson.fromJson(Gson.java:768)
    com.google.gson.Gson.fromJson(Gson.java:717)
    com.google.gson.Gson.fromJson(Gson.java:689)

Upvotes: 7

Views: 24665

Answers (2)

user3408531
user3408531

Reputation:

Using Jackson's ObjectMapper class,you can read values and map them to an object, or an array of objects.

final ObjectMapper objectMapper = new ObjectMapper();
Address [] mdls = objectMapper.readValue(addressJson, Address [].class);

For List<Address> use:

List<Address> mdls = objectMapper.readValue(addressJson, new TypeReference<List<Address>>() {});

Upvotes: 1

Narendra Pathai
Narendra Pathai

Reputation: 41945

Try this

Address[] address = gson.fromJson(addressJson, Address[].class);

Upvotes: 23

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