来自表单的IOS Swift Post请求，带身份验证和数据

// 创建URL对象
let url = URL(string: "https://example.com/api/endpoint")!

// 创建请求对象
var request = URLRequest(url: url)
request.httpMethod = "POST"

// 设置请求头，包含身份验证信息
let username = "your_username"
let password = "your_password"
let loginString = "\(username):\(password)"
let loginData = loginString.data(using: .utf8)!
let base64LoginString = loginData.base64EncodedString()
request.setValue("Basic \(base64LoginString)", forHTTPHeaderField: "Authorization")

// 设置请求体，包含表单数据
let formData = "key1=value1&key2=value2"
request.httpBody = formData.data(using: .utf8)

// 发送请求
let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
    if let error = error {
        print("请求失败：\(error)")
    } else if let data = data {
        let responseString = String(data: data, encoding: .utf8)
        print("请求成功：\(responseString)")
    }
}
task.resume()