如何从 Postman To WebApi 获取表单数据

Question

我想从 Postman 接收表单数据：Content-Type: application/json这是 WebApi 方法：[HttpPost][Route("api/test")]public async Task TestMethod(HttpRequestMessage request){    var test = await request.Content.ReadAsStringAsync();}我得到的是：------WebKitFormBoundarypqDvmeG89cBR9mK9Content-Disposition: form-data; name="test"esad------WebKitFormBoundarypqDvmeG89cBR9mK9--但是我不想要数据，WebKitFormBoundary并且我限制只能使用 formdata。有没有其他办法？HTTP调用信息：POST /api/test HTTP/1.1Host: localhost:16854Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gWCache-Control: no-cachePostman-Token: 1a3d6427-4956-707d-da0c-3a29a63c7563------WebKitFormBoundary7MA4YWxkTrZu0gWContent-Disposition: form-data; name="test"esad------WebKitFormBoundary7MA4YWxkTrZu0gW--卷曲调用信息：curl -X POST \  http://localhost:16854/api/test \  -H 'cache-control: no-cache' \  -H 'content-type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW' \  -H 'postman-token: 02055873-e9a8-e9a6-019c-b407992b0e2f' \  -F test=esad 

Answer 1

1）如果您必须发送Content-Type: multipart/form-data或只是form-data

这是tab邮递员的第一个

如果您只需要收集您发布的一个键/值对 form-data

[HttpPost]

[Route("api/test")]

public HttpResponseMessage TestMethod(HttpRequestMessage request)

{

    var testValue = HttpContext.Current.Request.Form["test"];

    return Request.CreateResponse(HttpStatusCode.OK, testValue);

}

如果您必须收集多个已发布的键/值对 form-data

[HttpPost]

[Route("api/test")]

public HttpResponseMessage TestMethod(HttpRequestMessage request)

{

    NameValueCollection collection = HttpContext.Current.Request.Form;

    var items = collection.AllKeys.SelectMany(collection.GetValues, (k, v) => new { key = k, value = v });

    //We just collect your multiple form data key/value pair in this dictinary

    //The following code will be replaced by yours

    Dictionary<string, string> keyValuePairs = new Dictionary<string, string>();

    foreach (var item in items)

    {

        keyValuePairs.Add(item.key, item.value);

    }

    return Request.CreateResponse(HttpStatusCode.OK, keyValuePairs);

}

2）如果你必须发送 Content-Type: application/x-www-form-urlencoded

这是tab邮递员的第二个

那么你的 API 将是

[HttpPost]

[Route("api/test")]

public async Task TestMethod(HttpRequestMessage request)

{

    var test = await request.Content.ReadAsFormDataAsync();

}

然后当您使用断点调试代码时，您将获得以下输出

3）如果你必须发送 Content-Type: application/json

这是tab邮递员的第三个

有关此类选项，请参见下面的屏幕截图

你的api是

[HttpPost]

[Route("api/test")]

public async Task TestMethod(HttpRequestMessage request)

{

     var jObject = await request.Content.ReadAsAsync<JObject>();

     Item item = JsonConvert.DeserializeObject<Item>(jObject.ToString());

}

以及您收集这些发布数据的模型

public class Item

{

    public string test { get; set; }

}

你的输出将是

此选项的优点是您可以将其complex type作为发布的数据发送等

你的api是

[HttpPost]

[Route("test")]

public async Task TestMethod(HttpRequestMessage request)

{

    var jObject = await request.Content.ReadAsAsync<JObject>();

    Sample sample = JsonConvert.DeserializeObject<Sample>(jObject.ToString());

}

你收集这些数据的模型是

public class Item

{

    public string test { get; set; }

}

public class Sample

{

    public Item item { get; set; }

}

你会看到输出是

Answer 2

从 Postman 发送并form-data选择选项时，以下代码将正确读取键/值

[HttpPost]

[Route("api/test")]

public async Task<HttpResponseMessage> TestMethod(HttpRequestMessage request)

{

    string root = HttpContext.Current.Server.MapPath("~/App_Data");

    var provider = new MultipartFormDataStreamProvider(root);

    await Request.Content.ReadAsMultipartAsync(provider);

    var testValue = provider.FormData.GetValues("test")[0];

    return Request.CreateResponse(HttpStatusCode.OK);

}

可以在此处找到更详尽的示例（部分：阅读表单控件数据）。

编辑：发送到上述 API 处理程序的 HTTP 调用如下：

POST /api/stats/testmethod HTTP/1.1

Host: localhost:4100

Cache-Control: no-cache

Postman-Token: 999fd13d-f804-4a63-b4df-989b660bcbc5

Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW

------WebKitFormBoundary7MA4YWxkTrZu0gW

Content-Disposition: form-data; name="test"

esad

------WebKitFormBoundary7MA4YWxkTrZu0gW--

Answer 3

下面的语句可以做到这一点：

NameValueCollection form = HttpContext.Current.Request.Form;