Sending JSON List Of Object to Spring MVC controller

Question

I have an issue with sending a List Of Objects to Spring MVC controller .

The list of object is like this

[{"alias":"1",
  "rue":"Rue de la Senette",
  "codePostal":"78955",
  "ville":"Carrières-sous-Poissy",
  "rueComplement":""}]

And I send the above data with the following AJAX code:

$.ajax({
    type : 'POST',
    dataType : 'json',
    contentType :'application/json',
    url : $("#clientForm-add").attr('action'),
    data : JSON.stringify(adresses.toArray()),
});

When I use this form of ajax, it worked for me and the format sended is as follow:

Request Payload :
[{"alias":"1",
  "rue":"Rue de la Senette",
  "codePostal":"78955",
  "ville":"Carrières-sous-Poissy",
  "rueComplement":""}]

Yes, even the above one is worked, when i send it like as follow:

$.ajax({
    type : 'POST',
    dataType : 'json',
    contentType :'application/json',
    url : $("#clientForm-add").attr('action'),
    data : {adresseList : JSON.stringify(adresses.toArray())},
});

It doesn;t work for me. The sending data is look like

listAdresse=%5B%7B%22alias%22%3A%221%22%2C%22rue%22%3A%22Rue+de+la+Senette%22%2C%22codePostal%22%3A%2278955%22%2C%22ville%22%3A%22Carri%C3%A8res-sous-Poissy%22%2C%22rueComplement%22%3A%22%22%7D%5D Response Headersview source

And, It gave an error: 400 bad request

Here, my controller

@RequestMapping(value = "creerlivraison/ajouterclientBD",method=RequestMethod.POST)
public String ajouterClientBD(@RequestBody  Adresse[] listAdresse, Principal principal) {       
    for (Adresse adresse : listAdresse) {
        System.out.println(adresse);
    }   
    return "ok";
}

I want to know that "What is the difference between the two ajax request?", why the request payload is formatted when I wrap the data inside the braquets {} and specify listAddress.

Here is screen capture:

Object Data

Community · Accepted Answer · 2020-06-20 09:12:55Z

1

http://api.jquery.com/jquery.ajax/

data

Type: PlainObject or String or Array

Data to be sent to the server. It is converted to a query string, if not already a string. It's appended to the url for GET-requests. See processData option to prevent this automatic processing. Object must be Key/Value pairs. If value is an Array, jQuery serializes multiple values with same key based on the value of the traditional setting (described below).

In this instance,

JSON.stringify(adresses.toArray()) is string, just keep the JSON format.
{adresseList : JSON.stringify(adresses.toArray())} is an object, so it is converted to a query string.

edited Jun 20, 2020 at 9:12

CommunityBot

11 silver badge

answered Sep 6, 2014 at 19:47

Loki

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