How to Create InputStream Object from JsonObject

Question

I'm trying to figure out how one goes about retrieving the raw bytes stored in a JsonObject and turns that into an InputStream object?

I figured it might be something like:

InputStream fis = new FileInputStream((File)json.getJsonObject("data"));

Granted I haven't tried that out, but just wanted to know if anyone had any experience with this and knew the preferred way to do it?

Answer 1

You can convert a JSONObject into its String representation, and then convert that String into an InputStream .

The code in the question has a JSONObject being cast into File , but I am not sure if that works as intended. The following, however, is something I have done before (currently reproduced from memory):

String str = json.getJSONObject("data").toString();
InputStream is = new ByteArrayInputStream(str.getBytes());

Note that the toString() method for JSONObject overrides the one in java.lang.Object class.

From the Javadoc :

Returns: a printable, displayable, portable, transmittable representation of the object, beginning with { (left brace) and ending with } (right brace).

Answer 2

if you want bytes, use this

json.toString().getBytes()

or write a File savedFile contains json.toString, and then

InputStream fis = new FileInputStream(savedFile);