使用 SwiftyJSON 解析嵌入式 JSON

Question

我已经有一段时间了，但无法正确解析。我正在尝试解析此 json 文件：

{
 "order_history" : [ {
   "items" : [ {
    "id" : 284,
    "created" : [ 2016, 5, 26, 5, 27, 53 ],
    "updated" : [ 2016, 5, 27, 0, 31, 10 ],
    "sku" : "10-10-08-050",
    "name" : "Product one of set one",
    "description" : "",
    "quantity" : 1.0,
    "price" : 2000.0,
    "total" : 2000.0,
    "tax" : null,
    "discount" : null
}, {
  "id" : 285,
  "created" : [ 2016, 5, 26, 5, 27, 53 ],
  "updated" : [ 2016, 5, 27, 0, 31, 10 ],
  "sku" : "10-22-12-247",
  "name" : "Product 2 of set 1",
  "description" : "",
  "quantity" : 1.0,
  "price" : 2300.0,
  "total" : 2300.0,
  "tax" : null,
  "discount" : null
}, {
  "id" : 286,
  "created" : [ 2016, 5, 26, 5, 27, 53 ],
  "updated" : [ 2016, 5, 27, 0, 31, 10 ],
  "sku" : "10-22-12-249",
  "name" : "Product 3 of set 1",
  "description" : "",
  "quantity" : 1.0,
  "price" : 3700.0,
  "total" : 3700.0,
  "tax" : null,
  "discount" : null
} ],

"items" : [ {
  "id" : 288,
  "created" : [ 2016, 5, 26, 5, 29, 51 ],
  "updated" : [ 2016, 5, 27, 0, 31, 11 ],
  "sku" : "JJ-02-00-042",
  "name" : "Product 1 of set 2",
  "description" : "",
  "quantity" : 1.0,
  "price" : 3000.0,
  "total" : 3000.0,
  "tax" : null,
  "discount" : null
} ],

"items" : [ {
  "id" : 310,
  "created" : [ 2016, 5, 30, 7, 40, 41 ],
  "updated" : [ 2016, 5, 30, 7, 40, 46 ],
  "sku" : "J481",
  "name" : "Product 1 set 3",
  "description" : "",
  "quantity" : 1.0,
  "price" : 2200.0,
  "total" : 2200.0,
  "tax" : null,
  "discount" : null
} ],

"items" : [ {
  "id" : 311,
  "created" : [ 2016, 5, 30, 7, 48, 39 ],
  "updated" : [ 2016, 5, 30, 7, 48, 44 ],
  "sku" : "JJ1",
  "name" : "Product 2 set 3",
  "description" : "",
  "quantity" : 1.0,
  "price" : 2200.0,
  "total" : 2200.0,
  "tax" : null,
  "discount" : null
} ],

"items" : [ {
  "id" : 312,
  "created" : [ 2016, 5, 30, 9, 8, 31 ],
  "updated" : [ 2016, 5, 30, 9, 8, 32 ],
  "sku" : "J77",
  "name" : "Product 3 in set 3",
  "description" : "",
  "quantity" : 1.0,
  "price" : 2200.0,
  "total" : 2200.0,
  "tax" : null,
  "discount" : null
} ]
}
]
}

现在我能得到的只是第一套产品。我想要做的是获得所有三组以及 "created" 字段。我根本没有运气获得创建的领域。它只是空的。

这就是我从 json 文件中获取数据的方式

        for (_, myosin) in newJson["order_history"][0]["items"] {
            if let set = myosin["name"].string {
                //products is a string crated somewhere up there ^
                products.appendContentsOf("\n" + name)
            }

        }

感谢您对此提供的任何帮助。

Answer 1

您正在将 "name" 字段解码为 set 变量，但随后您试图使用不存在的 name 变量。你也在使用 appendContentsOf 但它应该是 append.

var products = [String]()

for (_, myosin) in newJson["order_history"][0]["items"] {
    if let set = myosin["name"].string {
        products.append("\n" + set)
    }
}

print(products)

并获取每个字典的 "created" 数组：

var createdArrays = [[Int]]()

for (_, myosin) in newJson["order_history"][0]["items"] {
    if let created = myosin["created"].arrayObject as? [Int] {
        createdArrays.append(created)
    }
}

print(createdArrays)

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