CODEWITHSUNDEEP
javajsonspringdto
Roberto
Roberto

Reputation: 1405

How to create java json dto for array or lists (non item name)?

I try to read from controller input json

When I uses name in node, everything is okey

There is json 

{
    "itemList": [
        {
            "name": "Alex",
            "surname": "Ivanov",
            "age": "25"
        },
        {
            "name": "Daria",
            "surname": "Ivanova",
            "age": "23"
        }
    ]
}

there is itemList in root of json

And I can catch it by this classes

controller

@RequestMapping(value = "/users",
        consumes = MediaType.APPLICATION_JSON_UTF8_VALUE,
        produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public class UserController {
    @Post
    public ResponseEntity add(@RequestBody UserDto user) {
    //todo check breack point hear
        return new ResponseEntity<UserDto>(user, null, HttpStatus.OK);
    }
}

and model

@RequiredArgsConstructor
@Getter
@Setter
@ToString
@EqualsAndHashCode
public class UserDto implements Serializable {
    public List<UserItem> itemList;
}


@RequiredArgsConstructor
@Getter
@Setter
@ToString
@EqualsAndHashCode
public class UserItem implements Serializable {
    private String name;
    private String surname;
    private String age;
}

But, I need in really, I need to parse json like this:

Just items in objects without name

{
    [
        {
            "name": "Alex",
            "surname": "Ivanov",
            "age": "25"
        },
        {
            "name": "Daria",
            "surname": "Ivanova",
            "age": "23"
        }
    ]
}

How to make it?

Upvotes: 0

Views: 2027

Answers (1)

Adithya Upadhya
Adithya Upadhya

Reputation: 2385

This is a malformed JSON object. The array inside doesn't have any key.

{
    [
        {
            "name": "Alex",
            "surname": "Ivanov",
            "age": "25"
        },
        {
            "name": "Daria",
            "surname": "Ivanova",
            "age": "23"
        }
    ]
}

I think what you're looking for is a JSON array:

    [
        {
            "name": "Alex",
            "surname": "Ivanov",
            "age": "25"
        },
        {
            "name": "Daria",
            "surname": "Ivanova",
            "age": "23"
        }
    ]

To parse this JSON array, just modify your Controller to accept a list of UserItem:

@RequestBody List<UserItem> users

Upvotes: 1

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