Read an image file using okhttp3.RequestBody in java and send it to client using HTTPServletResponse

Question

I tried to below code to send the response as byteStream, but I cannot read the image in my client side using Javascript.

Code to get image file:

Request getResponse = new Request.Builder()
             .URL("/getImage")
             .method("GET", null)
             .addHeader("Authorization", "oauthtoken " + accessToken).build();

Response response = client.newCall(getResponse).execute();
ResponseBody rBody = response.body().bytes(); 

I set the byteStream rBody to a jsonObject and send it to client using HTTPServletResponse like below.

{"file" : "����\u0000\u0010JFIF\u0000\u0001\u00..."};

But I cannot read the image file from the client side.