HTTP PUT请求正文为空

Question

我正在尝试使用HTTP Verb [HttpPut]发送请求，该请求已到达我的控制器，但我发送的参数是Null。已经看到很多堆栈溢出相同的线程，并尝试了但无法弄清楚...很奇怪！

我已序列化的类

Content requestContent = new Content();
requestContent.Name = "Name";
requestContent.Value = "Value";

这是我的请求正文

var requestBody = JsonConvert.SerializeObject(requestContent); 
HttpClient client = new HttpClient();
var uri = new Uri("http://localhost:64288/api/ConnectUs/TestMethod");
var response = client.PutAsJsonAsync(uri, new StringContent(requestBody, Encoding.UTF8, "application/json")).Result;
client.DefaultRequestHeaders.Add("Authorization", "Basic" + "YourAuthKey");
var responseFromServer = await response.Content.ReadAsStringAsync();

我的Web API控制器

public ActionResult<Content> TestMethod([FromBody]Content param)

Answer 1

您不需要额外的序列化，您必须使用'await'调用Async方法。

        HttpClient client = new HttpClient();
        client.DefaultRequestHeaders.Add("Authorization", "Basic" + "YourAuthKey");
        var uri = new Uri("http://localhost:64288/api/ConnectUs/TestMethod");
        var response = await client.PutAsJsonAsync(uri, requestContent);
        var responseFromServer = await response.Content.ReadAsStringAsync();

Answer 2

https://docs.microsoft.com/en-us/previous-versions/aspnet/hh944690(v%3Dvs.118)

[PutAsJsonAsync将序列化给定类型T的给定对象，请尝试使用PutAsync

https://docs.microsoft.com/en-us/dotnet/api/system.net.http.httpclient.putasync?view=netframework-4.8

Answer 3

使用PutAsJsonAsync时，您无需将对象重新包装为JSON：

HttpClient client = new HttpClient();
var uri = new Uri("http://localhost:64288/api/ConnectUs/TestMethod");
var response = await client.PutAsJsonAsync(uri, requestContent); // LOOK HERE
client.DefaultRequestHeaders.Add("Authorization", "Basic" + "YourAuthKey");
var responseFromServer = await response.Content.ReadAsStringAsync();