Passing a collection to the Spring MVC controller in Angular JS

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I am using angularjs on the front end and spring MVC for the back end logic

I am familiar with the below code

@RequestMapping(value = "/positions/open/save", method = RequestMethod.POST)
@ResponseBody
public EntityListingApiResponse<OpenPositionRating> saveOpen(@ModelAttribute OpenPositionRating obj, BindingResult bindingResult){
    ...//code to save
}

This works fine.

Now I want pass the collection of OpenPositionRating object. I tried it using @RequestParam annotation and @ModelAttribute annotation. In case I use @ModelAttribute annotation, it does call the method but I get empty list in the parameters of saveOpen method

@RequestMapping(value = "/positions/open/save", method = RequestMethod.POST)
@ResponseBody
public EntityListingApiResponse<OpenPositionRating> saveOpen(@ModelAttribute ArrayList<OpenPositionRating> obj, BindingResult bindingResult){
    ...//code to save
}

This doesn't work

Below is the code to call the above method (.js file):

var openPositionRatings = [
                { restrictedUntil: '2014-07-26', rating: 3, id: 20055, openPosition: null, restricted: false },
                { restrictedUntil: '2014-07-26', rating: 5, id: 20053, openPosition: null, restricted: false },
                { restrictedUntil: '2014-07-26', rating: 6, id: 45652, openPosition: null, restricted: true }
            ];
$http({
        url:'api/products/pep/positions/open/save',
        method:'POST',
        dataType: 'JSON',
        data: $.param(openPositionRatings,true),
headers: {'Content-Type': 'application/x-www-form-urlencoded'}
}).success(function(data){
}

here openPositionRating is explicit javascript object created for testing.

Below is my OpenPositionRating entity:

@Entity
@Table(name="OPEN_POSITION_RATING")
public class OpenPositionRating implements Serializable {
@Id
@Column(name="ID")
private Long id;

@OneToOne(cascade = {}, fetch = FetchType.LAZY)
@JoinColumn(name="POSITION_ID", unique = false)
private OpenPosition openPosition;

@Column(name="RATING", updatable=true, insertable=true, nullable=true)
private Integer rating;

@Column(name="RESTRICTED", updatable=true, length=1, nullable=false)
private Boolean restricted;

@Temporal(TemporalType.DATE)
@Column(name="RESTRICTED_UNTIL", updatable=true, nullable=true, length=7)
private Date restrictedUntil;

....//Constructors and setter getters
}

asked 58 secs ago

Vivek

6