将JSON/NSDictionary反序列化为Swift对象 [英] Deserialize JSON / NSDictionary to Swift objects

问题描述

有没有一种方法可以正确反序列化对Swift对象响应的JSON响应.使用DTO作为固定JSON API的容器?

Is there a way to properly deserialize a JSON response to Swift objects resp. using DTOs as containers for fixed JSON APIs?

类似于 http://james.newtonking.com/json 之类的东西，或类似Java中的示例

Something similar to http://james.newtonking.com/json or something like this example from Java

User user = jsonResponse.readEntity(User.class);

其中jsonResponse.toString()类似于

{
  "name": "myUser", 
  "email": "[e-mail]",
  "password": "passwordHash"
}

推荐答案

由于您提供了一个非常简单的JSON对象，因此代码已准备就绪，可以处理该模型.如果您需要更复杂的JSON模型，则需要改进此示例.

Since you give a very simple JSON object the code prepared for to handle that model. If you need more complicated JSON models you need to improve this sample.

您的自定义对象

class Person : NSObject {
    var name : String = ""
    var email : String = ""
    var password : String = ""

    init(JSONString: String) {
        super.init()

        var error : NSError?
        let JSONData = JSONString.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)

        let JSONDictionary: Dictionary = NSJSONSerialization.JSONObjectWithData(JSONData, options: nil, error: &error) as NSDictionary

        // Loop
        for (key, value) in JSONDictionary {
            let keyName = key as String
            let keyValue: String = value as String

            // If property exists
            if (self.respondsToSelector(NSSelectorFromString(keyName))) {
                self.setValue(keyValue, forKey: keyName)
            }
        }
        // Or you can do it with using 
        // self.setValuesForKeysWithDictionary(JSONDictionary)
        // instead of loop method above
    }
}

这就是您使用JSON字符串调用自定义类的方式.

And this is how you invoke your custom class with JSON string.

override func viewDidLoad() {
    super.viewDidLoad()
    let jsonString = "{ \"name\":\"myUser\", \"email\":\"[e-mail]\", \"password\":\"passwordHash\" }"
    var aPerson : Person = Person(JSONString: jsonString)
    println(aPerson.name) // Output is "myUser"
}

这篇关于将JSON/NSDictionary反序列化为Swift对象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！