Ajax POST data in Request Param

Question

I am making a POST request as below :

 $.ajax({
     url :"/clientCredentials.json",
     type: "POST",
     data: {
        "clientEmail": email,
        "clientName":clientName,
        "orgName":orgName,
        "logoURL":logoURL,
        "redirectURI":redirectUri
     },
     success: function(response){
        alert("sucess");

     },
     error:function(response){
         alert("something went wrong");
     }
 });

On the server, I am using @RequestParams to get this data.

@RequestParam String clientEmail, @RequestParam String clientName, @RequestParam String orgName, @RequestParam String logoURL, @RequestParam String redirectURI

I am getting below from from server:

{"code":"400","errorMessage":"Required String parameter 'clientEmail' is not present"}

If I use @RequestBody instead of @RequestParam to accept this data its working fine.

My question is How can I get this data in Request Parameters? What am I doing wrong? I have tried Jquery($.get(), $.post()) also. nothing working.

Thanks for any help.

Answer 1

I just did small project with latest version of spring boot and jquery and it is working well, and based on investigation I did I found there are 2 factor can make this issue, one from jquery and other one from Spring MVC converters:

1- jquery ajax have contentType parameter

contentType (default: 'application/x-www-form-urlencoded; charset=UTF-8')

if this one changed to application/json or application/xml will change the way it is sending request to server then will make issue to server parsing, but it is default value will send form as key=value coma separated and this is OK with FormHttpMessageConverter "which is drive us to next point"

2- spring MVC is using FormHttpMessageConverter for "application/x-www-form-urlencoded" parsing or converting then you can use @RequestParam if this converter changed to other converter like:

MappingJackson2HttpMessageConverter for 'application/json'

or

Jaxb2CollectionHttpMessageConverter for 'application/xml'

so it will expect another request and you can get it using @RequestBody

So, you have to check request going from jquery is it form, json, or xml using development tools in your browser, then check you spring code/configuration to be sure that this request is converted by the FormHttpMessageConverter, this converter could be changed by the parameters of your @RequestMapping.