Ios 使用Swift从字典数组创建对象数组

我从一个web服务接收到一个JSON字典，我需要将返回值映射到现有值。下面是我想做的：

class Contract {
var contractID: String?

var ebState: String?
var ibState: String?
var importerState: String?

var exportersBankRefNo: String?
var importersBankRefNo: String?
}

let contract1 = Contract()
contract1.contractID = "001"

let contract2 = Contract()
contract2.contractID = "002"

// This is the JSON return dictionary
let exportAppnStatusList: [[String: String]] = [["contractID":"001",
    "ExporterBankRefNo":"ExporterBankRefNo001",
    "ExporterBankState":"ACCEPTED",
    "ImporterBankRefNo":"",
    "ImporterBankState":"UNKNOWN",
    "ImporterState":"UNKNOWN" ],
  ["contractID":"002",
    "ExporterBankRefNo":"ExporterBankRefNo002",
    "ExporterBankState":"ACCEPTED",
    "ImporterBankRefNo":"ImporterBankRefNo002",
    "ImporterBankState":"ACCEPTED",
    "ImporterState":"UNKNOWN" ]]

我需要获取

exportAppnStatusList

并在现有的

contract1

和

contract2

中填写相关值，通过

Contractd

映射，尝试使用此init（您的类必须从NSObject继承）：

然后你可以这样做：

exportAppnStatusList.forEach {
    print(Contract(jsonDict: $0))
}

---

这将使用可用信息填充合同，忽略找不到id的合同：

for contract in [contract1, contract2] {
    if let contractDict = exportAppnStatusList.filter({$0["contractID"] == contract.contractID}).first {
        contract.exportersBankRefNo = contractDict["ExporterBankRefNo"]
        contract.ebState = contractDict["ExporterBankState"]
        contract.importersBankRefNo = contractDict["ImporterBankRefNo"]
        contract.ibState = contractDict["ImporterBankState"]
        contract.importerState = contractDict["ImporterState"]
    }
}

---

为什么不通过像这样映射字典数组来生成契约对象呢？您需要编写一个接受所有这些参数的自定义初始值设定项

exportAppnStatusList.map { (dict:[Stirng:String]) -> Contract in 
    return Contract(contractID:dict["contractID"],
                    ebState:dict["ExporterBankState"],
                    ibState:dict["ImporterBankState"],      
                    importerState:dict["ImporterState"], 
                    exportersBankRefNo:dict["ExporterBankRefNo"], 
                    importersBankRefNo:dict["ImporterBankRefNo"] 
}

---

我有一个现有的契约对象数组，需要JSON调用覆盖这些属性。问题是，我有一个现有的契约数组，我想循环并填充其值，而不是创建一个全新的数组。

exportAppnStatusList.map { (dict:[Stirng:String]) -> Contract in 
    return Contract(contractID:dict["contractID"],
                    ebState:dict["ExporterBankState"],
                    ibState:dict["ImporterBankState"],      
                    importerState:dict["ImporterState"], 
                    exportersBankRefNo:dict["ExporterBankRefNo"], 
                    importersBankRefNo:dict["ImporterBankRefNo"] 
}