问题描述
我正在使用Alamofire通过邮件ID从Gmail API获取电子邮件：
AF.request("https://www.googleapis.com/gmail/v1/users/me/messages/\(id)?format=full",headers: headers)
.responseJSON { [self] response in
do {
let json = try JSON(data: response.data!)
if let rawString = json.rawString() {
let email = try Email(rawString)
} else {
print("json.rawString is nil")
}
emailFetchGroup.leave()
}
catch {
print(error)
emailFetchGroup.leave()
}
}
我要尝试通过JSON响应创建以下类Email：
// This file was generated from JSON Schema using quicktype,do not modify it directly.
// To parse the JSON,add this file to your project and do:
//
// let email = try Email(json)
import Foundation
// MARK: - Email
class Email: Codable {
let sizeEstimate: Int
let historyID,threadID: String
let payload: Payload
let internalDate,snippet,id: String
let labelIDS: [String]
enum CodingKeys: String,CodingKey {
case sizeEstimate
case historyID = "historyId"
case threadID = "threadId"
case payload,internalDate,id
case labelIDS = "labelIds"
}
init(sizeEstimate: Int,historyID: String,threadID: String,payload: Payload,internalDate: String,snippet: String,id: String,labelIDS: [String]) {
self.sizeEstimate = sizeEstimate
self.historyID = historyID
self.threadID = threadID
self.payload = payload
self.internalDate = internalDate
self.snippet = snippet
self.id = id
self.labelIDS = labelIDS
}
}
// MARK: Email convenience initializers and mutators
extension Email {
convenience init(data: Data) throws {
let me = try newJSONDecoder().decode(Email.self,from: data)
self.init(sizeEstimate: me.sizeEstimate,historyID: me.historyID,threadID: me.threadID,payload: me.payload,internalDate: me.internalDate,snippet: me.snippet,id: me.id,labelIDS: me.labelIDS)
}
convenience init(_ json: String,using encoding: String.Encoding = .utf8) throws {
guard let data = json.data(using: encoding) else {
throw NSError(domain: "JSONDecoding",code: 0,userInfo: nil)
}
try self.init(data: data)
}
convenience init(fromURL url: URL) throws {
try self.init(data: try Data(contentsOf: url))
}
func with(
sizeEstimate: Int? = nil,historyID: String? = nil,threadID: String? = nil,payload: Payload? = nil,internalDate: String? = nil,snippet: String? = nil,id: String? = nil,labelIDS: [String]? = nil
) -> Email {
return Email(
sizeEstimate: sizeEstimate ?? self.sizeEstimate,historyID: historyID ?? self.historyID,threadID: threadID ?? self.threadID,payload: payload ?? self.payload,internalDate: internalDate ?? self.internalDate,snippet: snippet ?? self.snippet,id: id ?? self.id,labelIDS: labelIDS ?? self.labelIDS
)
}
func jsonData() throws -> Data {
return try newJSONEncoder().encode(self)
}
func jsonString(encoding: String.Encoding = .utf8) throws -> String? {
return String(data: try self.jsonData(),encoding: encoding)
}
}
// MARK: - Payload
class Payload: Codable {
let mimeType: String
let headers: [Header]
let body: Body
let partID,filename: String
enum CodingKeys: String,CodingKey {
case mimeType,headers,body
case partID = "partId"
case filename
}
init(mimeType: String,headers: [Header],body: Body,partID: String,filename: String) {
self.mimeType = mimeType
self.headers = headers
self.body = body
self.partID = partID
self.filename = filename
}
}
// MARK: Payload convenience initializers and mutators
extension Payload {
convenience init(data: Data) throws {
let me = try newJSONDecoder().decode(Payload.self,from: data)
self.init(mimeType: me.mimeType,headers: me.headers,body: me.body,partID: me.partID,filename: me.filename)
}
convenience init(_ json: String,userInfo: nil)
}
try self.init(data: data)
}
convenience init(fromURL url: URL) throws {
try self.init(data: try Data(contentsOf: url))
}
func with(
mimeType: String? = nil,headers: [Header]? = nil,body: Body? = nil,partID: String? = nil,filename: String? = nil
) -> Payload {
return Payload(
mimeType: mimeType ?? self.mimeType,headers: headers ?? self.headers,body: body ?? self.body,partID: partID ?? self.partID,filename: filename ?? self.filename
)
}
func jsonData() throws -> Data {
return try newJSONEncoder().encode(self)
}
func jsonString(encoding: String.Encoding = .utf8) throws -> String? {
return String(data: try self.jsonData(),encoding: encoding)
}
}
// MARK: - Body
class Body: Codable {
let size: Int
let attachmentID: String
enum CodingKeys: String,CodingKey {
case size
case attachmentID = "attachmentId"
}
init(size: Int,attachmentID: String) {
self.size = size
self.attachmentID = attachmentID
}
}
// MARK: Body convenience initializers and mutators
extension Body {
convenience init(data: Data) throws {
let me = try newJSONDecoder().decode(Body.self,from: data)
self.init(size: me.size,attachmentID: me.attachmentID)
}
convenience init(_ json: String,userInfo: nil)
}
try self.init(data: data)
}
convenience init(fromURL url: URL) throws {
try self.init(data: try Data(contentsOf: url))
}
func with(
size: Int? = nil,attachmentID: String? = nil
) -> Body {
return Body(
size: size ?? self.size,attachmentID: attachmentID ?? self.attachmentID
)
}
func jsonData() throws -> Data {
return try newJSONEncoder().encode(self)
}
func jsonString(encoding: String.Encoding = .utf8) throws -> String? {
return String(data: try self.jsonData(),encoding: encoding)
}
}
// MARK: - Header
class Header: Codable {
let name,value: String
init(name: String,value: String) {
self.name = name
self.value = value
}
}
// MARK: Header convenience initializers and mutators
extension Header {
convenience init(data: Data) throws {
let me = try newJSONDecoder().decode(Header.self,from: data)
self.init(name: me.name,value: me.value)
}
convenience init(_ json: String,userInfo: nil)
}
try self.init(data: data)
}
convenience init(fromURL url: URL) throws {
try self.init(data: try Data(contentsOf: url))
}
func with(
name: String? = nil,value: String? = nil
) -> Header {
return Header(
name: name ?? self.name,value: value ?? self.value
)
}
func jsonData() throws -> Data {
return try newJSONEncoder().encode(self)
}
func jsonString(encoding: String.Encoding = .utf8) throws -> String? {
return String(data: try self.jsonData(),encoding: encoding)
}
}
// MARK: - Helper functions for creating encoders and decoders
func newJSONDecoder() -> JSONDecoder {
let decoder = JSONDecoder()
if #available(iOS 10.0,OSX 10.12,tvOS 10.0,watchOS 3.0,*) {
decoder.dateDecodingStrategy = .iso8601
}
return decoder
}
func newJSONEncoder() -> JSONEncoder {
let encoder = JSONEncoder()
if #available(iOS 10.0,*) {
encoder.dateEncodingStrategy = .iso8601
}
return encoder
}
这几乎完美； attachmentID参数除外-尝试创建电子邮件时，出现以下错误：
keyNotFound(CodingKeys(stringValue: "attachmentId",intValue: nil),Swift.DecodingError.Context(codingPath: [CodingKeys(stringValue: "payload",CodingKeys(stringValue: "body",intValue: nil)],debugDescription: "No value associated with key CodingKeys(stringValue: \"attachmentId\",intValue: nil) (\"attachmentId\").",underlyingError: nil))
对此我一无所知；因此，感谢您提供任何帮助-我需要做什么以确保将分配此属性？
EDIT 我忘了包含JSON响应；如下：
{
"snippet" : "","id" : "1758550e1d57a61e","internalDate" : "1604259323000","sizeEstimate" : 1811162,"threadId" : "1758549a183c08f0","payload" : {
"partId" : "","mimeType" : "video\/mp4","filename" : "nicholasarner@gmail.com-2020_11_01_11_35_23-WDYT?.mp4","body" : {
"size" : 1322930,"attachmentId" : "ANGjdJ_nEZvNaV972a1H9osO7Ze3WH-F5hlf8cSEQjgM9NmI8XzsKsfhAF_zV7addIHsIEgm8nmlPGID8pICD5ew8399hocuXwvfGVx_Pl3Z7f1jwgmrm1_UD6k1daGkaXFFy7kbfiiRRidy42IoKT9r3FoS4tb7mVmv7ctrQE9KvCjV2Op3MCkzvrjM494iG06yJtQhM5Zt697BG-kythaCjacFJ5cTh4c-qdCN60JIUL3sR95AWnoEvSBMVr_i6iPKIP67gpddw27MkMmqICA8jkJXXSGhGaZek2hJu886ik_3VCvqlQ4c2uypWVYNOfWMPvjVuNmlW-_MH41cSo_mqd2DaxBVkXut70bu24y2-aY50ljhVZRqhV6CSoUlbBiPEe_VxToATBy_vFLF8TZRlOGg5Jq0kleymZvRgg"
},"headers" : [
{
"name" : "Return-Path","value" : "<nicholasarner@gmail.com>"
},{
"name" : "Received","value" : "from iPhone ([2601:645:4200:3950:441:1411:7e85:db6d]) by smtp.gmail.com with ESMTPSA id u124sm12113464pfc.21.2020.11.01.11.35.24 for <nicholasarner@gmail.com> (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128\/128); Sun,01 Nov 2020 11:37:51 -0800 (PST)"
},{
"name" : "Date","value" : "Sun,1 Nov 2020 11:35:23 -0800"
},{
"name" : "From","value" : "nicholasarner@gmail.com"
},{
"name" : "To","value" : "Nick Arner <nicholasarner@gmail.com>"
},{
"name" : "Message-ID","value" : "<d5ff6514-1c55-4d98-a4d3-43a776d7b05d@iPhone>"
},{
"name" : "In-Reply-To","value" : "<CAD1H43XCrKQD3omFV2ggf_e2kLm_v4234p2oHvvKGd-bJ4PZeQ@mail.gmail.com>"
},{
"name" : "Subject","value" : "Re: tett"
},{
"name" : "MIME-Version","value" : "1.0"
},{
"name" : "Content-Type","value" : "video\/mp4"
},{
"name" : "Content-transfer-encoding","value" : "base64"
},{
"name" : "Content-disposition","value" : "attachment; filename=\"nicholasarner@gmail.com-2020_11_01_11_35_23-WDYT?.mp4\""
}
]
},"historyId" : "11441245","labelIds" : [
"IMPORTANT","SENT","INBox"
]
}
解决方法
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