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Jackson deserialization - with contained ArrayList<T>

{"error":

      null,

 "object":

      "[{"Id":16,"Class":"ReportType","ClassID":"4","ListItemParent_ID":4,"Item":"Pothole","Description":"Pothole","Sequence":1,"LastEditDate":null,"LastEditor":null,"ItemStatus":"Active","ItemColor":"#00AF64"}

  ]"

}

       

public class ListResponse {

 

public String error;    

    public ArrayList<ListItem> object;  

 

public ListResponse() {}    

}

       

public class ListItem {

    @JsonProperty("Id")

    public int id;      

    @JsonProperty("Class")

    public String classType;

    @JsonProperty("ClassID")

    public String classId;  

    @JsonProperty("ListItemParent_ID")

    public int parentId;    

    @JsonProperty("Item")

    public String item;

    @JsonProperty("Description")

    public String description;

 

@JsonAnySetter

public void handleUnknown(String key, Object value) {}

 

public ListItem() {}

}

       

public class CitizenPlusService {

    private Client client = null;  

    private WebResource service = null;    

 

public CitizenPlusService() {

    initializeService("http://localhost:59105/PlusService/");

}

 

private void initializeService(String baseURI) {    

    // Use the default client configuration.

    ClientConfig clientConfig = new DefaultClientConfig();      

    clientConfig.getClasses().add(JacksonJsonProvider.class);                      

 

    client = Client.create(clientConfig);

 

    // Add a logging filter to track communication between server and client.

    client.addFilter(new LoggingFilter());

    // Add the base URI

    service = client.resource(UriBuilder.fromUri(baseURI).build());

}

 

public ListResponse getListItems(String id) throws Exception

{          

    ListResponse response = service.path("GetListItems").path(id).accept(MediaType.APPLICATION_JSON_TYPE, MediaType.APPLICATION_XML_TYPE).get(ListResponse.class);                                  

    return response;            

}

       

org.codehaus.jackson.map.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of VALUE_STRING token

at [Source: java.io.StringReader@49497eb8; line: 1, column: 14] (through reference chain: citizenplus.types.ListResponse["object"])