how to convert json object into class object

Question

How to convert this json clsError and userId values:

String temp = "{"clsError":{"ErrorCode":110,"ErrorDescription":" Request Added"},"UserID":36}"

And pass them as parameters:

clsError errorObject=new clsError(UserID,clsError);

Answer 1

First use this: http://developer.android.com/reference/org/json/JSONObject.html#JSONObject(java.lang.String)

JSONObject tempJson = new JSONObject(temp);
JSONObject clsErrorJson = tempJson.getJSONObject("clsError");
clsError errorObject = new clsError(tempJson.getString("UserID"),
                                    clsErrorJson.getInt("clsError") + ": "
                                    + clsErrorJson.getString("ErrorDescription"));

that is basically it. but i was not sure about the second parameter of the clsError constructor. i just assumed it is a string in my example :) but this should give you the idea how to do this. and you will have to surround that with try/catch. eclipse will tell you how :)

Answer 2

I've found jackson's ObjectMapper to be extremely helpful in cases like this.

ObjectMapper objectMapper = new ObjectMapper();
clsError error = objectMapper.readValue(temp, clsError.class));

Answer 3

You can use jQuery extend method to wrap your json into javascript object as below:

function clsError(ErrorCode,ErrorDescription,UserID){
   this.ErrorCode=ErrorCode;
   this.ErrorDescription=ErrorDescription;
   this.UserID=UserID;
}

String temp="{"clsError":{"ErrorCode":110,"ErrorDescription":" Request Added"},"UserID":36}"
var obj = $.extend(new clsError(), temp);