场景：从上一个tableView点击传入uid，然后在viewDidLoad里面做数据查询，最后展示到tableView中。

问题：用Alamofire做GET请求得到结果，但在Alamofire打印结果条数为0，在Alamofire内打印有结果条数。具体请看代码

class SealViewController: UITableViewController {
    
    var userId: String!
    var seals: [SealModel] = []
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        print("uid->", userId)
        //加在API JSON数据
        Alamofire.request(.GET, SERVICEAPIDOMAIN + "/Mobile/MobileHandler.ashx?method=toAudit&uid=" + userId).responseJSON {
            response in
            if let apiData = response.result.value {
                let json = JSON(apiData)
                for var i = 0; i < json["items"].count; i++ {
                    let line = json["items"][i]
                    self.seals.append(SealModel(id: line["ID"].stringValue, title: line["TitleStr"].stringValue, content: line["ContentStr"].stringValue, dateTime: line["TimeStr"].stringValue, type: line["Type"].stringValue))
                }
            }
            print("Alamofire-sealsCount->", self.seals.count)
        }
        
        tableView.reloadData()
        print("sealsCount->", self.seals.count)

    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}

输出结果

uid-> 69
sealsCount-> 0
Alamofire-sealsCount-> 12