我正在尝试向本地服务器发出 http POST 请求,但是当我拨打电话时,我在服务器端收到 400 错误,所以我认为我在 Swift 代码中发出请求的方式存在问题. 我不确定我是否正确设置了 JSON 正文,但我们将不胜感激。提前致谢!
SWIFT代码:
let url = URL(string: "http://127.0.0.1:5000/get-friends")!
var request = URLRequest(url: url, cachePolicy: .useProtocolCachePolicy, timeoutInterval: 10)
request.httpMethod = "POST"
let tempIdDictionary: [String: Int] = ["user_id": 17]
let jsonBody = try? JSONSerialization.data(withJSONObject: tempIdDictionary, options: .fragmentsAllowed)
request.httpBody = jsonBody
let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
guard let data = data else { return }
do {
let friendList = try JSONDecoder().decode(FriendList.self, from: data)
} catch let jsonErr {
print(jsonErr)
}
}
task.resume()
保存 json 数据的结构:
struct FriendList: Codable {
let result: [Int]
}
这是我尝试发出请求时迅速出现的错误:
dataCorrupted(Swift.DecodingError.Context(codingPath: [], debugDescription: "The given data was not valid JSON.", underlyingError: Optional(Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around character 0." UserInfo={NSDebugDescription=Invalid value around character 0.})))