How to output json in spring mvc

Question

I am using Spring boot with mvc. I have a json schema for request and response. Basically the user posts data (in json) to a url, the controller does its logic and returns a json. I am having difficulty in returning the json. So far, I have a couple of views (in thymeleaf) with hardcoded responses which I dont want. I just want to use an object which I can edit and send back to the client. The response is very simple. This is the schema of the response:

{
"$schema": "http://json-schema.org/draft-04/schema#",
"type": "object",
"properties": {
"message":{
"minLength":1,
"type":"string"

}
},
"required": [
"message"
]
}

I have an object of type response which conforms to my response json schema. I basically want to output this object to the client. But not sure how as my controller returns a String and this string is usually the name of the html page.

kagmole · Accepted Answer · 2017-05-05 12:58:09Z

5

Add the @ResponseBody annotation to your controller method and it will use the returned value as a response rather than as a path to a page.

If you want that all methods of your controller return direct data (and not page paths), you can annotate your controller with @RestController rather than @Controller.

answered May 5, 2017 at 12:58

kagmole

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1 Comment

lualover2017 Over a year ago

I've added the @RestController and it worked. Learnt something new.

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