ios - 无法在 Swift 中执行 NSURLSession.sharedSession().dataTaskWithURL

Question

我有一段代码可以从 php 返回的 Json 中获取员工数据，如下所示:

[{"id":"1","email":"KK","password":"KKK","firstName":"KKK","lastName":"KK","photo":null,"phone":"22","mobile":"2","position":"SS","adminstrator_id":"1","department_id":"1"}]

我试过的代码:

func getEmpById (id:String) {
    emp = employee()

    let myUrl = NSURL(string:"http://localhost/On%20Call%20App/scripts/getEmployee.php?id=\(id)")

    let session = NSURLSession.sharedSession()

    let task = session.dataTaskWithURL(myUrl!, completionHandler: {
        (data, response, error) -> Void in

        do {
            let json = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as! [[String: AnyObject]]
            let dic = json[0]


            if let  id = dic["id"] , firstName = dic["firstName"] ,lastName = dic["lastName"], mobile = dic["mobile"],phone = dic["phone"],email=dic["email"],pos=dic["position"]{



                self.emp.setId(id as! String )

                self.emp.setFirstName(firstName as! String)

                self.emp.setLastName(lastName as! String)

                self.emp.setPhone(phone as! String)

                self.emp.setMobile(mobile as! String)

                self.emp.setEmail(email as! String)

                self.emp.setPosition(pos as! String)



            }


        } catch {
            print(error)

        }

    })
    task.resume()


}

这一行的问题 let task = session.dataTaskWithURL(myUrl!, completionHandler:{ 当应用程序到达这一行时，它将直接转到 task.resume() 不打印任何错误

对完成这项工作有什么帮助吗？

Answer 1

您的响应是Array 类型而不是Dictionary

 let json = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as! NSArray
 let dic = json[0] as! NSDictionary
 print(dic.objectForKey("email"))

如果像这样使用 Swift 数组就更好了。

 let json = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as! [[String: AnyObject]]
 let dic = json[0]
 print(dic["email"])