How to convert an object to a JSON representation

Question

Oddly enough, I did not find this.

What is the easiest way to convert an object to a JSON string? (Boundary cases, such as cycles in graphs of objects, are not of great interest to me. We will find a solution to the simple case of class A containing some objects of classes B, C, D and some primitives).

Support for the base collection is required.

Answer 1

Heh, I discovered / remembered what we already use for this.

ObjectMapper from CodeHaus

The code is as follows: super simple:

Object obj = ...
String result = new ObjectMapper().writeValueAsString(obj);

Answer 2

Gson Google . .

Answer 3

I would recommend JAXB + Jackson. See question for details .

Answer 4

See the answer here: Javascript for Java using JSON

The answer applies in both directions, they are bi-directional.