GSON on Google App Engine throws a Security Exception

Question

I am trying to convert an object into JSON using the GSON library on Google App Engine. For some reason, it throws this exception and I don\'t understand how to solve this.

Answer 1

If App Engine does not support Reflection, then we are pretty much left to write our own toJSON method. This can be done as follows (not a big deal but someone might find it useful):

public SampleObject {

  //...

  /**
   * Convert this object to a JSON object for representation
   */
  public JSONObject toJSON() {
    try {
       JSONObject jsonobj = new JSONObject();
       jsonobj.put("id", this.id);
       jsonobj.put("name", this.name);
       return jsonobj;
    } catch(Exception e) {
       return null;
    }
  }
}

Then, you can use a toString method on this object to print out the JSON representation. Not the best I agree but some workaround for now.