使用SwiftyJSON将NSDictionary转换为json字符串到json对象 [英] NSDictionary to json string to json object using SwiftyJSON

问题描述

我有一个用例，我有一个字典数组，我需要它们作为json对象：

I have a use case where I have an array of dictionaries and I need them as a json object:

var data = [Dictionary<String, String>]()
//append items 
var bytes = NSJSONSerialization.dataWithJSONObject(data, options: NSJSONWritingOptions.allZeros, error: nil)
var jsonObj = JSON(NSString(data: bytes!, encoding: NSUTF8StringEncoding)!)

println(jsonObj)
println(jsonObj[0])

第一个打印声明给了我

[
    {"price":"1.20","city":"Foo","_id":"326105","street":"One"},
    {"price":"1.20","city":"Bar","_id":"326104","street":"Two"}
]

第二个

null

但我希望它能返回json数组中的第一个元素。我做错了什么？

but I would expect it to return the first element in the json array. What I am doing wrong?

推荐答案

根据文档，这应该是你所需要的。

According to the docs, this should be all you need.

var data = [Dictionary<String, String>]()
//append items 
var jsonObj = JSON(data)

println(jsonObj)
println(jsonObj[0])

将数组直接转换为 JSON 对象时遇到问题吗？

Are you having a problem with converting an array directly into a JSON object?

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