Building a HTTP Endpoint with Eclipse Vert.x


Producing JSON

JSON is everywhere Today. So let's jump into the train too and produce a JSON result. To do this, Vert.x provides:

  1. the Json class providing object mapping methods,
  2. the JsonObject and JsonArray allowing to create and manipulate JSON structures.

We are going to use this second approach to return something like:

    "message": "hello"

This object can be easily created using: new JsonObject().put("message", "hello"). Then, we just need to encode this JSON structure into the HTTP response:

Producing JSON
Create your playground on
This playground was created on, our hands-on, knowledge-sharing platform for developers.
Go to