AngularJS/Spring MVC - Trouble accessing form data in controller

Question

I have a form where a user can have multiple addresses. An address contains for example of a street and country to keep things simple.

What I have is the following in my view. Whenever a user presses the button, a different div with input pops up, which works good.

<div ng-repeat="address in addresses">
    <input type="text" ng-model="address.streetname" placeholder="streetname"/>
    <input type="text" ng-model="address.country" placeholder="country"/>
</div>
<button class="button" ng-click="addNewAddress()">Add address</button>

Part of my AngularJS controller:

var formData = {
            //...
            "addresses" : $scope.addresses
};

Spring Controller:

String[] addresses = request.getParameterValues("addresses");
for(String address : addresses) {
    System.out.println(address); //ACTUALLY PRINTS SOMETHING
    JSONObject j = new JSONObject(address); //ouch error.
    System.out.println(j.toString());
}

The following gets printed in my spring console (I have only filled in the streetname with values 'aaa', 'bbb', 'ccc'.

[{"address":"","$$hashKey":"object:4","streetname":"aaa"},{"address":"","$$hashKey":"object:6","streetname":"bbb"},{"address":"","$$hashKey":"object:8","streetname":"ccc"}]

The error message:

 A JSONObject text must begin with '{' at 1 [character 2 line 1]

Edit: Now it is working thanks to the two below, I just have to point out that there is no need to use request.getParameterValues(). Instead, just use request.getParameter("valuehere") and directly parse it to a jsonarray.

I don't know spring, but are you trying to parse and array into an object ? You should parse to an array, don't you ? — antoinestv
– antoinestv, Commented Apr 30, 2015 at 13:45
Thanks for your comment. I updated my post and parsed to an array. It is still not working unfortunately — Moody
– Moody, Commented Apr 30, 2015 at 13:54
You could try x.getJSONObject(index) instead of a simple get. — Pierre-Alexandre Moller
– Pierre-Alexandre Moller, Commented Apr 30, 2015 at 14:00
@Moody parse first into an Array then you can work with objects — Joao Evangelista
– Joao Evangelista, Commented Apr 30, 2015 at 14:08
Thanks for both your comments and time. It is now working. I appreciate it! — Moody
– Moody, Commented Apr 30, 2015 at 14:11

Joao Evangelista · Accepted Answer · 2015-04-30 14:01:16Z

1

Your error is from JSONObject serialization not Spring's since you are not using @RequestBody (you might take a look here). Your json is an array which you are trying to convert into an object objects are the things between { }, thats why it's given you exception, you need a JSONArray instead

String[] addresses = request.getParameterValues("addresses");
for(String address : addresses) {
    System.out.println(address);
    JSONArray jArray = new JSONArray(address); //here!
    System.out.println(jArray.toString());
   //interate over array (like any other array) and do stuff, get the objects etc..
}

Or just change you array into an object with Angular

answered Apr 30, 2015 at 14:01

Joao Evangelista

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