Swift:
使用基本认证发送 HTTP 请求

import Foundation

// 准备URL和认证信息
if let url = URL(string: "https://your-api-endpoint.com/data") {
    var request = URLRequest(url: url)
    let username = "user"
    let password = "pass"
    let loginString = "\(username):\(password)"
    
    // 将认证信息转为base64
    if let loginData = loginString.data(using: .utf8) {
        let base64LoginString = loginData.base64EncodedString()
        
        // 在请求头里添加认证信息
        request.setValue("Basic \(base64LoginString)", forHTTPHeaderField: "Authorization")
        
        // 执行请求
        URLSession.shared.dataTask(with: request) { (data, response, error) in
            // 确保没有发生错误
            if let error = error {
                print("请求发送错误: \(error)")
                return
            }
            
            // 确定我们得到了数据
            if let data = data, let dataString = String(data: data, encoding: .utf8) {
                print("服务器响应:\n\(dataString)")
            }
        }.resume()
    }
}