We are trying to fill-in the pincode of a customer through an API call. The API returns the values in JSON format such as:

{"query":"Delhi","pincode":"110001"}

If the pincode cannot be found, the API returns with the values such as:

{"query":"Searched Address","pincode":"","error":"Not found"}

We get a "Invalid JSON string format" error when address fields are left blank on add customer record form. The code we are using to make the API calls is:

if (input.Address_Line1  !=  null ||  input.Address_Line2  !=  null  ||  input.City  !=  null)

{

    customerAddress = input.Address_Line1 + " " + input.Address_Line2 + " " + input.City;

    myURL = encodeUrl(" http://www.getpincode.info/api/pincode?q=" + customerAddress.trim());

    response = getUrl(myURL);

    if (response.getJSON("pincode")  !=  "")

    {

        input.Pin_Code = response.getJSON("pincode");

    }

}

Don't know what exactly are we doing wrong here. Any help will be much appreciated.

Thanks!

Prakhar