What should be my class structure to parse JSON in GSON

Question

I have the following JSON data:

{
    "response": {},
    "errorMessage": {
        "error": [
            {
                "errorId": 260003,
                "domain": "ads",
                "subdomain": "asd",
                "severity": "asd",
                "category": "asd",
                "message": "asdsa  asd ad",
                "errorName": "UnAuthorized"
            }
        ]
    }
}

Currently I have the following class structure:

public class JSONCollection
    private Response response;
    private ErrorMessage error;

public class Response 
    private String collectionId;
    private String url;

public class ErrorMessage 
    private List<ErrorValues> error;

public class ErrorValues 
    private String errorId;
    private String domain;
    private String subdomain;
    private String severity;
    private String category;
    private String message;
    private String errorName;

I have setters/get set for all private variables

But when I do a JSONCollection cJson = gson.fromJson(JSONValue,JSONCollection.class); I get cJson as a null.

How to get it right?

[Use this tool](http://www.jsonschema2pojo.org/) to generate schema for your JSON — jmj, Jul 22 '13 at 18:37
@JigarJoshi When I press preview with my JSON nothing shows up — footy, Jul 22 '13 at 18:45
It does for me,paste your JSON in that field, select source type = JSON, Annotation style= None — jmj, Jul 22 '13 at 18:47
JsonCollection's ErrorMessage should be named `errorMessage`, not `error`. — Andrew Rueckert, Feb 22 '23 at 04:23

score 1 · Accepted Answer · answered Jul 22 '13 at 19:07

1

I used this tool shown by @JigarJoshi to generate my schema.

The only difference I found is I had to change the class name from ErrorValues to Error

answered Jul 22 '13 at 19:07

footy

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What should be my class structure to parse JSON in GSON

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