我最近开始使用swift。我需要解码下面的json。
JSON内部还有两个JSON，第一个JSON（验证）无关紧要。第二个（结果）内部有一个JSON数组（serviceCenter）。我需要每个服务中心的信息。我尝试使用servicecenter作为可解析的类来获取servicenter对象，但由于JSON没有正确的格式，我无法做到。
[
{
"validation": {
"bValid": true,
"sDescription": "Access true."
}
},
{
"result": {
"serviceCenter": [
{
"model": "Vanquish",
"color": "Purple",
"make": "Aston Martin",
"sTag": "3666",
"sVin": "6JDO2345",
"sMiles": "3666",
"bDamage": "1",
"dDateTime": "04-17-2018 9:38 AM"
},
{
"model": "F360",
"color": "Red",
"make": "Ferrari",
"sTag": "0010",
"sVin": "6JDO2347",
"sMiles": "80000",
"bDamage": "1",
"dDateTime": "04-17-2018 9:25 AM"
},
{
"model": "Vanquish",
"color": "Purple",
"make": "Aston Martin",
"sTag": "0009",
"sVin": "6JDO2345",
"sMiles": "25000",
"bDamage": "1",
"dDateTime": "04-17-2018 9:23 AM"
},
{
"model": "Vanquish",
"color": "Purple",
"make": "Aston Martin",
"sTag": "0003",
"sVin": "6JDO2345",
"sMiles": "20000",
"bDamage": "1",
"dDateTime": "04-12-2018 10:37 AM"
}
]
}
}
]
我尝试了很多，但我无法做到。
这是我的代码，请有人帮助我
do {
let parseoDatos = try JSONSerialization.jsonObject(with: data!) as! [AnyObject]
let h = type(of: parseoDatos )
print("'\(parseoDatos)' of type '\(h)'")
let contenido = parseoDatos[1]["result"]
if let services = contenido!! as? Dictionary<String, Array<Any>> {
for (_,serviceArray) in services {
for sc in serviceArray{
let h = type(of: sc )
print("'\(sc)' of type '\(h)'")
}
}
}
} catch {
print("json processing failed")
}
打印sc的结果是
{
bDamage = 1;
color = Purple;
dDateTime = "04-17-2018 9:38 AM";
make = "Aston Martin";
model = Vanquish;
sMiles = 3666;
sTag = 3666;
sVin = 6JDO2345;
}' of type '__NSDictionaryI'
答案 0 :(得分：2)
试试这段代码
enum ParsingError: Error {
case wrongFormat(String)
}
do {
let jsonObject = try JSONSerialization.jsonObject(with: data!)
guard let array = jsonObject as? [Any] else {
throw ParsingError.wrongFormat("wrong root object")
}
guard array.count == 2 else {
throw ParsingError.wrongFormat("array count != 2")
}
guard let dict = array[1] as? [String: Any] else {
throw ParsingError.wrongFormat("can't parse dict from array")
}
guard let serviceCenters = (dict["result"] as? [String: Any])?["serviceCenter"] else {
throw ParsingError.wrongFormat("can't parse serviceCenters")
}
guard let serviceCentersArray = serviceCenters as? [[String : Any]] else {
throw ParsingError.wrongFormat("serviceCenters is not an array")
}
print("\(type(of: serviceCentersArray))\n", serviceCentersArray)
} catch {
print("json processing failed: \(error)")
}
答案 1 :(得分：2)
您可以使用Codable
初始响应包含 InitialElement 数组，而InitialElement是包含validation，result的结构，结果可能零
请勿忘记在url
URLSession.shared.dataTask(with: url!) { (data, response, error) in
if let initial = try? JSONDecoder().decode([InitialElement].self, from: data){
// inital now have array of InitialElement and InitialElement is is struct with validation , result , result may be nil
print(initial)
}
}.resume()
使用此数据模型：
import Foundation
struct InitialElement: Codable {
let validation: Validation?
let result: ResultData?
}
struct ResultData: Codable {
let serviceCenter: [ServiceCenter]
}
struct ServiceCenter: Codable {
let model, color, make, sTag: String
let sVin, sMiles, bDamage, dDateTime: String
}
struct Validation: Codable {
let bValid: Bool
let sDescription: String
}
extension InitialElement {
init(data: Data) throws {
self = try JSONDecoder().decode(InitialElement.self, from: data)
}
}
答案 2 :(得分：0)
感谢所有人的回答，这是我的第一个问题，我感觉很棒所有的帮助。最后我可以解决问题。也许不是最好的方法，但这里是代码：
let task = URLSession.shared.dataTask(with: request) { (data: Data?, response: URLResponse?, error: Error?) in
if error != nil{
print("error=\(String(describing: error))")
return
}
do {
let parseoDatos = try JSONSerialization.jsonObject(with: data!) as! [AnyObject]
let h = type(of: parseoDatos )
print("'\(parseoDatos)' of type '\(h)'")
let contenido = parseoDatos[1]["result"]
if let services = contenido!! as? Dictionary<String, Array<Any>> {
for (_,serviceArray) in services {
for sc in serviceArray{
let h = type(of: sc )
print("'\(sc)' of type '\(h)'")
let valid = JSONSerialization.isValidJSONObject(sc) // true
print(valid)
do {
let jsonData = try JSONSerialization.data(withJSONObject: sc, options: .prettyPrinted)
let serviceDecoded = try JSONSerialization.jsonObject(with: jsonData, options: [])
if let scJSON = serviceDecoded as? [String:String] {
print ("--------------------------")
print("'\(scJSON)' of type '\(type(of: scJSON))'")
print ("--------------------------")
}
} catch {
print(error.localizedDescription)
}
我想稍后我会尝试按照建议使用Codable，但是现在代码工作正常。再次感谢！
答案 3 :(得分：-2)
//try this it is working
let arrayMain=try?JSONSerialization.jsonObject(with:jsonData!,options:.mutableLeaves) as! Array<Any>
//print(arrayMain!)
if let firstDictionart=arrayMain![0] as? [String: Any] {
if let insideFirstDict = firstDictionart["validation"] as? [String: Any]{
print(insideFirstDict["bValid"]!)
print( insideFirstDict["sDescription"]!)
}
}
if let resultDictionary=arrayMain![1] as? [String: Any] {
if let serviceDictionary = resultDictionary["result"] as? [String: Any] {
for array in serviceDictionary["serviceCenter"] as! Array<Any>{
if let infoDicti=array as? [String: Any] {
print( infoDicti["color"]!)
print( infoDicti["make"]!)
print( infoDicti["color"]!)
print( infoDicti["sTag"]!)
print( infoDicti["sVin"]!)
print( infoDicti["sMiles"]!)
print( infoDicti["sVin"]!)
print( infoDicti["model"]!)
print( infoDicti["bDamage"]!)
print( infoDicti["dDateTime"]!)
}
}
}
}