CODEWITHSUNDEEP
javajsonarraylistjersey
IshKalsi
IshKalsi

Reputation: 21

How to convert single element to arraylist and format to json using jersey?

Jersey by default convert single element returned to object . But the client side is expecting the data in json to be arraylist

Model class is LocationDetails 

public class LocationDetails {
    private String locationAccount;
    private String locationName;
    private String locationStreet;
    private String locationPostcode;
}

other class LocationData which has arraylist of LocationDetails as 

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class LocationData {
    private ArrayList<LocationDetails> Locations;
}

and the controller class is using the following code to convert to JSON:

  //Getting location and item along with barcodes
        @POST
        @Path("/getLocationAndItemData")
        @Produces(MediaType.APPLICATION_JSON)
        public LocationResponse getAlllocations(){
               ArrayList<LocationDetails> locationDetailList = new ArrayList<LocationDetails>();
               LocationDetails details = new LocationDetails();
           //setting location account                        
               details.setLocationAccount("10125");
               locationDetailList.add(details); 
}

The following code is returning json as LocationData : {LocationDetails : {"LocationAccount","10125"}}

whereas i want it to be like : 

LocationData : {LocationDetails : [{"LocationAccount","10125"}]}

as the client side would expect the data to be inside list.

How to convert the type without changing the whole logic.I am using jersey.

Upvotes: 1

Views: 1473

Answers (2)

Dhanalakshmi
Dhanalakshmi

Reputation: 1

I too had the same issue, after so many research i found that the problem is due to the jar files imported in the MyEclipse (Persisted container). I have removed that. The same code works for me. The json format will be [{single element}].

Upvotes: 0

klimpond
klimpond

Reputation: 766

Add @XmlElementWrapper annotation to your List, that should do the trick. If you have further problems with Jersey, try first XML output to see what is being produced. If XML is ok, JSON will be too.

@XmlElement(name="locationDetail")
@XmlElementWrapper(name="locationDetails")
private List<LocationDetail> locationDetails;

Also name your class properties with first lowercase letter, please.

Upvotes: 1

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