Question

我希望能够从我的控制器方法中读取一个post变量。

我目前有以下代码：

[HttpPost]
public IHttpActionResult BuildPartitions([FromBody]string PartitionBuildDate)
{
}

我正在使用以下代码进行测试：

using (HttpClient httpClient = new HttpClient())
{
    var values = new Dictionary<string, string>
    {
        { "PartitionBuildDate", "24-May-2017" }
    };
    var content = new FormUrlEncodedContent(values);
    var response = httpClient.PostAsync("http://localhost:55974/api/Controller/BuildPartitions", content);
    var responseString = response.Result.Content;
}

在线查看，这看起来在C＃中发送和接收post变量都是正确的，但是PartitionBuildDate变量始终为null。

Answer 1

尝试添加content-type标头。我使用Newtonsoft JSON.NET进行JSON转换：

string postBody = JsonConvert.SerializeObject(yourDictionary);

var response = client.PostAsync(url, new StringContent(postBody, Encoding.UTF8, "application/json"));

var responseString = response.Result.Content;

此外，在您的Web API端，尝试将POST参数包装在类中：

public class PostParameters
{
    public string PartitionBuildDate {get;set;}
}

[HttpPost]
public IHttpActionResult BuildPartitions([FromBody]PostParameters parameters)
{
    //you can access parameters.PartitionBuildDate
}

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