Question

如何在下面的代码中获取applicationStateJson，我可以从数据中解析下面的JSON对象但是无法从中获取applicationStateJson

{
applicationStateJson =     {
    "address_status" = 0;
    email = "xxxxxxxx;
    "email_status" = 0;
    "first_name" = xxx;
    "last_name" = "";
    "login_status" = 1;
    loginstype = "<null>";
    mobile = xxxxxx;
    "mobile_status" = 1;
    notifications =         (
    );
    "notifications_size" = 0;
    "otp_status" = 3;
    "profile_id" = "<null>";
    "profile_name" = "virtual_recruiter";
    "user_id" = 454;
    "user_status" = 1;
    "virtual_recruiter_id" =xxx;
};
"error_msg" = "<null>";
status = "<null>";
}

代码为

do { 
 let json = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions.mutableContainers) as AnyObject 
print(json) 
let applicationStateJson = try json["applicationStateJson"] 
} catch { print(error.localizedDescription) }

Answer 1

尝试使用以下代码

首先，您需要更改以下行，@foreach (var contact in contactList) { <li>@contact</li> }而不是Dictionary<String, Any>

AnyObject

然后通过以下代码获取 applicationStateJson

let json = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions.mutableContainers) as! Dictionary<String, Any>

Answer 2

JSON的根对象显然是一个字典，而不是AnyObject（一个对象，但我不知道 - 它是什么）。

键applicationStateJson的值也是字典。

do { 
   if let json = try JSONSerialization.jsonObject(with: data) as? [String:Any],
      let applicationStateJson = json["applicationStateJson"] as? [String:Any] {
         print(applicationStateJson)
   }
} catch { 
   print(error)
}

与往常一样，.mutableContainers在Swift中完全没有意义

如何从swift 3中的另一个JSON对象获取JSON对象

2 个答案: