Is it possible to retrieve Image and JsonObject in a single Rest Service Call?

Question

Using How to send an Image from Web Service in Spring , I am able to send Image as a response to rest service call. But, I would like to send back Image and some information using json object to client using rest web service.

How do I do it?

Can we create a POJO object containing byte array (image) and other fields (other information) and send back to client like:

• Get Information and Image in single call

OR we always need to stick to separate calls for images like:

• Get Information
• Get Image

Answer 1

You've answered your question. Either use a POJO or split the calls. Java can't return tuples. What is better depends on circumstances:

• if you don't want to make two calls and you're OK with handling the received object go for POJO

• if you want to avoid using objects/envelopes for communication or if you want to use the calls separately go for two calls

Answer 2

Yes you can send as well as retrieve the image within the JSON. Try to save the image as a Base64 String using @Lob annotation in spring and convert the image file to base64 in javascript using FileReader object and image will be rendered as a base64 string along with the JSON.