在swift中使用字典和utf-8进行post请求

let parameters = [
    "key1": "value1",
    "key2": "value2"
]

guard let postData = try? JSONSerialization.data(withJSONObject: parameters, options: []) else {
    // 处理转换失败的情况
    return
}

guard let url = URL(string: "https://example.com/api") else {
    // 处理URL创建失败的情况
    return
}

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

request.httpBody = postData
request.setValue("application/json", forHTTPHeaderField: "Content-Type")

let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
    if let error = error {
        // 处理请求错误的情况
        print("Error: \(error)")
        return
    }
    
    if let data = data {
        // 处理响应数据
        let responseString = String(data: data, encoding: .utf8)
        print("Response: \(responseString ?? "")")
    }
}
task.resume()