Post Ajax call with json returning 400 whereas rest client works fine

Question

I am using jersey on the server side and my function uses

@POST
@Consumes(MediaType.APPLICATION_JSON)
public Response someFunction(SomeClass obj,@Context HttpServletRequest req){}

But when i make a http post call with content-type="application/json" and payload as {"name":"abc","age":"20"} from Advanced Rest Client, then the call will be a successfull call. But if i create a client which makes an ajax call like,

 var person = {
            name: "abc",
            age:"20",
        }
 $.ajax({
    url: 'someUrl',
    type: 'post',
    contentType: "application/json; charset=utf-8",
    dataType: 'json',
    success: function (data) {
    },
    data: person
    });

Then this call will return 400 bad request and it is not going inside the function at server side. If we pass person object in the form of a string like,

"{\"name\":\"abc\",\"\age":\"20\"}"

Then ajax call also return 200. Any reason why it is happening?

you didn't send json to the server. `person` is an object, and jquery will of course turn that into a param string, not json, because that's what it does by default. — Kevin B, Jun 30 '16 at 18:55
yes, and that's the problem, as I have explained. a javascript object is **not** json. — Kevin B, Jun 30 '16 at 18:57
`processData: false` will result in `[object Object]` being sent to the server, so, also incorrect. — Kevin B, Jun 30 '16 at 18:59

score 0 · Answer 1 · answered Jun 30 '16 at 18:59

0

You should stringify data.

$.ajax({
   url: 'someUrl',
   type: 'post',
   contentType: "application/json; charset=utf-8",
   dataType: 'json',
   success: function (data) {
   },
   data: JSON.stringify(person)
});

answered Jun 30 '16 at 18:59

Zohaib Ijaz

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Can somebody tell me , what's wrong with this answer? – Zohaib Ijaz Jun 30 '16 at 19:01
Nothing, it just isn't useful. it doesn't provide any information that isn't already on the dupe question. – Kevin B Jun 30 '16 at 19:03

Post Ajax call with json returning 400 whereas rest client works fine

1 Answers1