如何通过 POST 将参数传递到 Azure Functions 2

Question

我想将参数传递给 Azure 函数 2 中的 HttpTrigger 类型。我在下面的链接中看到了 Azure 函数 1 的答案。

How to pass parameters by POST to an Azure function?

以上链接中的答案是await req.Content.ReadAsAsync<>(); 我正在寻找 Azure Function 2 的类似答案。

这里我们使用 HttpRequest 类而不是 HttpRequestMessage 类。

下面是代码。

public async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.Anonymous, "get", "post", Route = null)] HttpRequest req,
            ILogger log)
        {
            log.LogInformation("C# HTTP trigger function processed a request.");
            string data = .............;
        }

Answer 1

首先根据 HTTP 请求创建 Azure Function Project（或添加到您的解决方案）。扳机。在创建项目的单个类中，您可以看到示例。您从请求正文中传递了 JSON：

{"name":"John"}

只需将其转换为代码中的变量：

 public static async Task<IActionResult> Run(
        [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req,
        ILogger log)
    {
        log.LogInformation("C# HTTP trigger function processed a request.");

       

        string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
        dynamic data = JsonConvert.DeserializeObject(requestBody);
        string name = data.name;
        ...

Answer 2

您似乎正在尝试向Azure Function V2 发送POST 请求。见下面代码sn-p。

自定义请求类：

public class Users
    {

        public string Name { get; set; }
        public string Email { get; set; }

    }

Azure 函数 V2：

在此示例中，我使用自定义类获取两个参数，并将这两个类属性作为响应返回。

public static async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.Anonymous, "get", "post", Route = null)] HttpRequest req,
            ILogger log)
        {
            log.LogInformation("C# HTTP trigger function processed a request.");

            //Read Request Body
            var content = await new StreamReader(req.Body).ReadToEndAsync();

            //Extract Request Body and Parse To Class
            Users objUsers = JsonConvert.DeserializeObject<Users>(content);

            //As we have to return IAction Type So converting to IAction Class Using OkObjectResult We Even Can Use OkResult
            var result = new OkObjectResult(objUsers);
            return (IActionResult)result;
        }

索取样品：

{
   "Name": "Kiron" ,
   "Email": "kiron@email.com"
}

邮递员测试：

注意： 您实际上正在寻找await req.Content.ReadAsAsync<>(); 从您的函数发送POST 请求所需的。并从 该服务器响应。但请记住，req.Content 不支持阅读 Azure Function V2 中的帖子请求，其中显示了 Function V1 示例 here

另一个例子：

见下面代码sn-p：

public static async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.Anonymous, "get", "post", Route = null)] HttpRequest req,
            ILogger log)
        {
            log.LogInformation("C# HTTP trigger function processed a request.");

            //Read Request Body
            var content = await new StreamReader(req.Body).ReadToEndAsync();

            //Extract Request Body and Parse To Class
            Users objUsers = JsonConvert.DeserializeObject<Users>(content);

            //Post Reuqest to another API 
            HttpClient client = new HttpClient();
            var json = JsonConvert.SerializeObject(objUsers);
            //Parsing json to post request content
            var stringContent = new StringContent(json, UnicodeEncoding.UTF8, "application/json");
            //Posting data to remote API
            HttpResponseMessage responseFromApi = await client.PostAsync("YourRequstURL", stringContent);

            //Variable for next use to bind remote API response
            var remoteApiResponse = "";
            if (responseFromApi.IsSuccessStatusCode)
            {
               remoteApiResponse = responseFromApi.Content.ReadAsStringAsync().Result; // According to your sample, When you read from server response
            }

            //As we have to return IAction Type So converting to IAction Class Using OkObjectResult We Even Can Use OkResult
            var result = new OkObjectResult(remoteApiResponse);
            return (IActionResult)result;
        }

希望您理解，如果您仍有任何疑问，请随时分享。谢谢，编码愉快！

Answer 3

public static async void Run(
            [HttpTrigger(AuthorizationLevel.Function, "post", Route = null)]
            HttpRequest req,
            ILogger log)
        {
            var content = await new StreamReader(req.Body).ReadToEndAsync();

            MyClass myClass = JsonConvert.DeserializeObject<MyClass>(content);

        }

你可以有一个自定义类，它可以从 post 请求中以 JSON 的形式发送。