iOS调用Google Cloud Storage API持续报NSURLErrorDomain Code=-1005错误

核心错误点 #

1. 请求头参数设置颠倒 #

你的Swift代码中Authorization头的设置逻辑完全错误，将字段名与值的位置搞反了：

// 错误写法
request.setValue("Authorization", forHTTPHeaderField: "Bearer \(accessToken)")

正确写法需与Kotlin代码逻辑对齐，将授权值放在第一个参数位置，字段名放在第二个：

request.setValue("Bearer \(accessToken)", forHTTPHeaderField: "Authorization")

2. URL查询参数名错误 #

Swift代码使用了错误的查询参数名uploadItem，但Google Cloud Storage REST API要求的参数名是uploadType（与Kotlin代码中的uploadType=media一致）：

// 错误写法
URLQueryItem(name: "uploadItem", value: "media")
// 正确写法
URLQueryItem(name: "uploadType", value: "media")

其他优化建议 #

避免强制解包与内存过载 #

直接使用try! Data(contentsOf: fileURL)强制解包会导致文件读取失败时崩溃，且大图片直接加载进内存易引发内存问题。建议使用URLSession的upload(for:fromFile:)重载方法，直接传入文件URL：

let (data, response) = try await URLSession.shared.upload(for: request, fromFile: fileURL)

完整修正后的Swift代码 #

var components = URLComponents(string: "https://storage.googleapis.com/upload/storage/v1/b/\(bucketName)/o")!
components.queryItems = [
    URLQueryItem(name: "uploadType", value: "media"),
    URLQueryItem(name: "name", value: filename)
]

var request = URLRequest(url: components.url!)
request.setValue("Bearer \(accessToken)", forHTTPHeaderField: "Authorization")
request.setValue("image/jpeg", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"

let (data, response) = try await URLSession.shared.upload(for: request, fromFile: fileURL)
if let httpResponse = response as? HTTPURLResponse {
    print("Status code:", httpResponse.statusCode)
    print("Response:", String(data: data, encoding: .utf8) ?? "")
}

内容的提问来源于stack exchange，提问作者Nominalista