将数据从前一个请求中获取的数据传递到下一个POST请求[Swift / SwiftUI]

// 前一个请求获取数据
func fetchData(completion: @escaping (String) -> Void) {
    // 模拟异步获取数据
    DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
        let data = "Hello, World!"
        completion(data)
    }
}

// 发起下一个POST请求
func sendPostRequest(data: String) {
    // 构建请求参数
    let parameters = ["data": data]
    
    // 创建URLSession对象
    let session = URLSession.shared
    
    // 创建请求对象
    var request = URLRequest(url: URL(string: "https://example.com/api")!)
    request.httpMethod = "POST"
    
    // 设置请求体
    request.httpBody = try? JSONSerialization.data(withJSONObject: parameters, options: [])
    
    // 发送请求
    let task = session.dataTask(with: request) { (data, response, error) in
        // 处理响应
        if let error = error {
            print("Error: \(error)")
        } else if let data = data {
            let responseString = String(data: data, encoding: .utf8)
            print("Response: \(responseString ?? "")")
        }
    }
    task.resume()
}

// 示例用法
fetchData { data in
    sendPostRequest(data: data)
}