79 lines
2.7 KiB
Swift
79 lines
2.7 KiB
Swift
import Foundation
|
|
|
|
/// 网络请求封装 - 对应 Android 版 OkGo
|
|
class NetworkManager {
|
|
static let shared = NetworkManager()
|
|
|
|
private let session: URLSession
|
|
private let decoder = JSONDecoder()
|
|
|
|
private init() {
|
|
let config = URLSessionConfiguration.default
|
|
config.timeoutIntervalForRequest = 15
|
|
config.timeoutIntervalForResource = 30
|
|
config.httpMaximumConnectionsPerHost = 5
|
|
self.session = URLSession(configuration: config)
|
|
}
|
|
|
|
/// GET 请求获取字符串
|
|
func getString(from urlString: String, headers: [String: String]? = nil) async throws -> String {
|
|
guard let url = URL(string: urlString.trimmingCharacters(in: .whitespacesAndNewlines)) else {
|
|
throw NetworkError.invalidURL(urlString)
|
|
}
|
|
|
|
var request = URLRequest(url: url)
|
|
request.httpMethod = "GET"
|
|
headers?.forEach { request.setValue($1, forHTTPHeaderField: $0) }
|
|
|
|
let (data, response) = try await session.data(for: request)
|
|
|
|
guard let httpResponse = response as? HTTPURLResponse else {
|
|
throw NetworkError.invalidResponse
|
|
}
|
|
|
|
guard (200...299).contains(httpResponse.statusCode) else {
|
|
throw NetworkError.httpError(httpResponse.statusCode)
|
|
}
|
|
|
|
guard let str = String(data: data, encoding: .utf8) else {
|
|
throw NetworkError.decodingError("UTF-8 解码失败")
|
|
}
|
|
|
|
return str
|
|
}
|
|
|
|
/// GET 请求解码 JSON
|
|
func getJSON<T: Decodable>(from urlString: String, type: T.Type, headers: [String: String]? = nil) async throws -> T {
|
|
let str = try await getString(from: urlString, headers: headers)
|
|
guard let data = str.data(using: .utf8) else {
|
|
throw NetworkError.decodingError("字符串转 Data 失败")
|
|
}
|
|
return try decoder.decode(T.self, from: data)
|
|
}
|
|
|
|
/// GET 请求获取原始 Data
|
|
func getData(from urlString: String) async throws -> Data {
|
|
guard let url = URL(string: urlString.trimmingCharacters(in: .whitespacesAndNewlines)) else {
|
|
throw NetworkError.invalidURL(urlString)
|
|
}
|
|
let (data, _) = try await session.data(from: url)
|
|
return data
|
|
}
|
|
}
|
|
|
|
enum NetworkError: LocalizedError {
|
|
case invalidURL(String)
|
|
case invalidResponse
|
|
case httpError(Int)
|
|
case decodingError(String)
|
|
|
|
var errorDescription: String? {
|
|
switch self {
|
|
case .invalidURL(let url): return "无效的URL: \(url)"
|
|
case .invalidResponse: return "无效的响应"
|
|
case .httpError(let code): return "HTTP 错误: \(code)"
|
|
case .decodingError(let msg): return "解码错误: \(msg)"
|
|
}
|
|
}
|
|
}
|