How to validate JSON object?

Question

I would like to validate incoming json object for correctness at the server side. Is there a standard / optimal way to do that? What is your approach of validation?

Answer 1

My advice - deserialize the JSON and see if it breaks. For example, if you're using C# on the server side, you can use the newfangled DataContractJsonSerializer, or do it the old way with the JavaScriptSerializer which is arguably much simpler.

var serializer = new JavaScriptSerializer();
var result = serializer.Deserialize<Dictionary<string, object>>(jsonString);

EDIT: And now that it's come out that you're using Java, of course my C# example is not going to work for you, but the concept is the same. Stackoverflow already has some answers here: Convert a JSON string to object in Java ME?