springMVC接受数组

var obj = {};
       		var params = new Array();
       		var selected1 = $('#datatable').DataTable().rows('.selected').data();
       		 for (var i=0;i<selected1.length;i++){
       		 		params.push(selected1[i].id);
			}
obj.dataid = params;
$.ajax({
							type : "POST",
							url: '${rc.contextPath}/xx/xxx',
							contentType : 'application/json',
							data: JSON.stringify(obj),
							success : function(msg) {
								swal(
				                    "删除成功！", "", "success"
				                );
				                $("#deleteModal").modal('hide');
				                $('#datatable').DataTable().ajax.reload();
							},error:function(){
								swal(
				                    "删除失败！", "", "error"
				                );
							}
						})	
　　

　　

@RequestMapping("")
	@ResponseBody
	public ResultObject delDatas(HttpServletRequest request,HttpServletResponse response, 
			 @RequestBody JSONObject params){
		JSONArray idArray = params.getJSONArray("dataid");
		List<String> ids = idArray.toJavaList(String.class);
		return  new ResultObject();
	}