Alamofire 5.X表达式类型模糊，需要更多上下文

huangapple
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英文:

Alamofire 5.X Type of Expression is Ambiguous Without More Context

问题

我已经调试了几个小时，发现我非常讨厌Swift的错误消息表达式的类型没有足够的上下文而不明确 ---- 这段代码在Alamofire 3、4下运行正常，显然在Alamofire 5下有一些变化，但基本上是我在其他地方找到的，这意味着我做错了什么，但我完全不知道是什么。

let urlString = "\(baseURL)\(header)"
let jsonData: Data = try! JSONSerialization.data(withJSONObject: parameter, options: .prettyPrinted)

let jsonString = NSString(data: jsonData, encoding: String.Encoding.utf8.rawValue)! as String

print("JSON Params->\(jsonString)")

let headers: HTTPHeaders = [
    "Authorization": "XXXXXX",
    "Accept": "application/json",
    "Content-Type": "application/json"
]

let uploadUrl = try! URLRequest(url: URL(string: urlString)!, method: .post, headers: headers)
AF.upload(
    multipartFormData: { (multiPart) in
        var keys = [String]()

        for (key, img) in images {
            if let imageData = img.jpegData(compressionQuality: compressRatio) {
                multiPart.append(imageData, withName: key, fileName: key+".png", mimeType: "image/png")
                keys.append(key)
            }
        }

        let jsonName = try! JSONSerialization.data(withJSONObject: ["count": keys.count], options: .prettyPrinted)

        multiPart.append(jsonName, withName: "names")
        multiPart.append(jsonData, withName: "data")
    }, with: uploadUrl, encodingCompletion: { encodingResult in
        switch encodingResult {
        case .success(let upload, _, _):
            upload.responseJSON{ response in
                if hud{
                    Loader.init().hide(delegate: vc)
                }

                switch response.result {
                case .success(_):
                    print("Response->\(response.value)")

                    if response.value != nil {
                        let JSON = response.value! as AnyObject
                        let response = JSON["response"] as! NSDictionary

                        let success = response.value(forKey: "status")
                        let success_message = response.value(forKey: "success_message")
                        let error_message = response.value(forKey: "error_message")

                        if success as! String {
                            completion(response.replaceNullsWithBlanks() as NSDictionary, success_message as NSString, true)
                        } else {
                            print("Upload failed")
                            completion([:], error_message as NSString, false)

                            if alertMsg {
                                self.presentAlertWithTitle(title: "Alert", message: error_message, vc: vc)
                            }
                        }
                    }
                    break

                case .failure:
                    print(response.error ?? "Fail")
                    self.presentAlertWithTitle(title: "Error!", message: (response.error?.localizedDescription)!, vc: vc)
                    break
                }
            }
        case .failure(let error):
            self.presentAlertWithTitle(title: "Error!", message: error.localizedDescription, vc: vc)
        }
    })
英文:

I've been debugging this for hours and I have discovered I absolutely despise Swift's error message of Type of expression is ambiguous without more context ---- This code worked with Alamofire 3, 4, and obviously with Alamofire 5 there's some changes to the way it works, but this is essentially what I've found elsewhere which means that something I'm doing is wrong but I have no g darn idea what it could be.

let urlString = "\(baseURL)\(header)"
let jsonData : Data = try! JSONSerialization.data(withJSONObject: parameter, options: .prettyPrinted)
let jsonString = NSString(data: jsonData, encoding: String.Encoding.utf8.rawValue)! as String
print("JSON Params->\(jsonString)")
let headers: HTTPHeaders = [
"Authorization": "XXXXXX",
"Accept": "application/json",
"Content-Type": "application/json"
]
let uploadUrl = try! URLRequest(url: URL(string:urlString)!, method: .post, headers: headers)
AF.upload(
multipartFormData: { (multiPart) in
var keys = [String]()
for (key, img) in images {
if let imageData = img.jpegData(compressionQuality: compressRatio) {
multiPart.append(imageData, withName: key, fileName: key+".png", mimeType: "image/png")
keys.append(key)
}
}
let jsonName = try! JSONSerialization.data(withJSONObject: ["count": keys.count], options: .prettyPrinted)
multiPart.append(jsonName, withName: "names")
multiPart.append(jsonData, withName: "data")
}, with: uploadUrl, encodingCompletion: { encodingResult in
switch encodingResult {
case .success(let upload, _, _):
upload.responseJSON{ response in
if hud{
Loader.init().hide(delegate: vc)
}
switch response.result {
case .success(_):
print("Response->\(response.value)")
if response.value != nil {
let JSON = response.value! as AnyObject
let response = JSON["response"] as! NSDictionary
let success = response.value(forKey: "status")
let success_message = response.value(forKey: "success_message")
let error_message = response.value(forKey: "error_message")
if success as! String {
completion(response.replaceNullsWithBlanks() as NSDictionary, success_message as NSString, true)
} else {
print("Upload failed")
completion([:], error_message as NSString, false)
if alertMsg {
self.presentAlertWithTitle(title: "Alert", message: error_message, vc: vc)
}
}
}
break
case .failure:
print(response.error ?? "Fail")
self.presentAlertWithTitle(title: "Error!", message: (response.error?.localizedDescription)!, vc: vc)
break
}
}
case .failure(let error):
self.presentAlertWithTitle(title: "Error!", message: error.localizedDescription, vc: vc)
}
})

答案1

得分: 0

我最终通过使用`.responseDecodable`解决了这个问题，我不得不定义自己的Decodable
let urlString = "\(baseURL)\(header)"
let jsonData: Data = try! JSONSerialization.data(withJSONObject: parameter, options: .prettyPrinted)
let jsonString = String(data: jsonData, encoding: String.Encoding(rawValue: String.Encoding.utf8.rawValue))
print("JSON Params->\(jsonString!)")
let headers: HTTPHeaders = [
"Authorization": "XXXXXX",
"Accept": "application/json",
"Content-Type": "application/json"
]
struct DecodableType: Decodable {
let success_message: String
}
struct UploadResponse: Decodable {
let response: DecodableType
}
let uploadUrl = try! URLRequest(url: URL(string: urlString)!, method: .post, headers: headers)
AF.upload(
multipartFormData: { (multiPart) in
var keys = [String]()
for (key, img) in images {
if let imageData = img.jpegData(compressionQuality: compressRatio) {
multiPart.append(imageData, withName: key, fileName: key+".png", mimeType: "image/png")
keys.append(key)
}
}
let jsonName = try! JSONSerialization.data(withJSONObject: ["count": keys.count], options: .prettyPrinted)
multiPart.append(jsonName, withName: "names")
multiPart.append(jsonData, withName: "data")
}, with: uploadUrl).responseDecodable(of: UploadResponse.self) { response in
if hud {
Loader.init().hide(delegate: vc)
}
print("Result: \(response)")
switch response.result {
case .success(let result):
let response = result.response
completion([:], response.success_message as NSString, true)
case .failure(let error):
let err = error.localizedDescription
print("Upload Failed: \(err)")
completion([:], err as NSString, false)
if alertMsg {
self.presentAlertWithTitle(title: "Error!", message: err, vc: vc)
}
break
}
}
} else {
self.presentAlertWithTitle(title: "Error!", message: "Please check network connectivity.", vc: vc)
}
英文:

I ended up fixing it using .responseDecoable, I had to define my own Decodable

let urlString = "\(baseURL)\(header)"
let jsonData : Data = try! JSONSerialization.data(withJSONObject: parameter, options: .prettyPrinted)
let jsonString = String(data: jsonData, encoding: String.Encoding(rawValue: String.Encoding.utf8.rawValue))
print("JSON Params->\(jsonString!)")
let headers: HTTPHeaders = [
"Authorization": "XXXXXX",
"Accept": "application/json",
"Content-Type": "application/json"
]
struct DecodableType: Decodable {
let success_message: String
}
struct UploadResponse: Decodable {
let response: DecodableType
}
let uploadUrl = try! URLRequest(url: URL(string:urlString)!, method: .post, headers: headers)
AF.upload(
multipartFormData: { (multiPart) in
var keys = [String]()
for (key, img) in images {
if let imageData = img.jpegData(compressionQuality: compressRatio) {
multiPart.append(imageData, withName: key, fileName: key+".png", mimeType: "image/png")
keys.append(key)
}
}
let jsonName = try! JSONSerialization.data(withJSONObject: ["count": keys.count], options: .prettyPrinted)
multiPart.append(jsonName, withName: "names")
multiPart.append(jsonData, withName: "data")
}, with: uploadUrl).responseDecodable(of: UploadResponse.self) { response in
if hud {
Loader.init().hide(delegate: vc)
}
print("Result: \(response)")
switch response.result {
case .success(let result):
let response = result.response
completion([:], response.success_message as NSString, true)
case .failure(let error):
let err = error.localizedDescription
print("Upload Failed: \(err)")
completion([:], err as NSString, false)
if alertMsg {
self.presentAlertWithTitle(title: "Error!", message: err, vc: vc)
}
break
}
}
} else {
self.presentAlertWithTitle(title: "Error!", message: "Please check network connectivity.", vc: vc)
}

huangapple
  • 本文由 发表于 2023年3月3日 21:07:17
  • 转载请务必保留本文链接：https://go.coder-hub.com/75627457.html
  • alamofire
  • swift
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