如何将base64字符串发送到POST服务- Swift

let base64String = "SGVsbG8gd29ybGQh"
if let data = Data(base64Encoded: base64String) {
    // 数据转换成功
} else {
    // 数据转换失败
}

if let url = URL(string: "https://example.com/post") {
    // URL对象创建成功
} else {
    // URL对象创建失败
}

var request = URLRequest(url: url)
request.httpMethod = "POST"

request.httpBody = data

let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
    if let error = error {
        // 请求发生错误
        print("Error: \(error)")
    } else if let data = data {
        // 请求成功，处理响应数据
        let responseString = String(data: data, encoding: .utf8)
        print("Response: \(responseString)")
    }
}
task.resume()