I’ve found that the simplejson module gives more descriptive errors in many cases where the built-in json module is vague. For instance, for the case of having a comma after the last item in a list: which is not very descriptive. The same operation with simplejson: Much better! Likewise for other common errors like capitalizing True.
You need to create a structure like this: Then you should be able to do: The names of my classes are just an example. You should use proper names. Adding a sample test: Produces:
I am trying to get a web service to work which returns a JSON (JAX-RS with jersey implementation on Tomcat). However, I am getting the below exception. I have looked at the similar problems here, but none of the solutions work for me, and it’s been more than half a day 🙁 The resource class … Read more
Key always should be string. Why it still doesn’t work? Because the error is caused by the redundant brace inside of “elementsToUpdate”. Below is an example:
This: is not JSON.This: is JSON. EDIT:Some commenters suggested that the above is not enough.JSON specification – RFC7159 states that a string begins and ends with quotation mark. That is “.Single quoute ‘ has no semantic meaning in JSON and is allowed only inside a string.
Try setting or depending on your Jackson version.
Use JSONP. jQuery: PHP: The echo might be wrong, it’s been a while since I’ve used php. In any case you need to output callbackName(‘jsonString’) notice the quotes. jQuery will pass it’s own callback name, so you need to get that from the GET params. And as Stefan Kendall posted, $.getJSON() is a shorthand method, but then you need to … Read more
Updated for 2018 The original answer accommodated the way MongoDB “date” fields were represented as: {“$date”: 1506816000000} If you want a generic Python solution for serializing datetime to json, check out @jjmontes’ answer for a quick solution which requires no dependencies. As you are using mongoengine (per comments) and pymongo is a dependency, pymongo has built-in utilities to help … Read more
This error means that file was not found. Either path is wrong or file is not present where you want it to be. Try to access it by entering source address in your browser to check if it really is there. Browse the directories on server to ensure the path is correct. You may even … Read more
As of Flask 1.1.0 a view can directly return a Python dict and Flask will call jsonify automatically. If your Flask version is less than 1.1.0 or to return a different JSON-serializable object, import and use jsonify.