.net 如何在 C# 中将 HTTP 发布请求发送到另一个 API

你可以试试这个:

//Yours entity.
MyEntity myEntity;
HttpResponseMessage response;
using (var httpClient = new HttpClient())
{
     httpClient.BaseAddress = new Uri("https://yourApiAdress.com");
     //Yours string value.
     var content = new FormUrlEncodedContent(new[]
     {
          new KeyValuePair<string, string>("MyStringContent", "someString")
     });
     //Sending http post request.
     response = await httpClient.PostAsync($"rest/of/apiadress/", content);
 }    

 //Here you save your response to Entity:

 var contentStream = await response.Content.ReadAsStreamAsync();
 //Options to mach yours naming styles.
 var options = new JsonSerializerOptions
 {
       PropertyNameCaseInsensitive = true,
       PropertyNamingPolicy = SnakeCaseNamingPolicy.Instance
 };
 //Here you go. Yours response as an entity:
 myEntity = await JsonSerializer.DeserializeAsync<MyEntity>(contentStream, options);

蛇 case 命名策略:

using Newtonsoft.Json.Serialization; //For SnakeCaseNamingPolicy.

public class SnakeCaseNamingPolicy : JsonNamingPolicy
{
    private readonly SnakeCaseNamingStrategy _newtonsoftSnakeCaseNamingStrategy
        = new SnakeCaseNamingStrategy();

    public static SnakeCaseNamingPolicy Instance { get; } = new SnakeCaseNamingPolicy();

    public override string ConvertName(string name)
    {
        return _newtonsoftSnakeCaseNamingStrategy.GetPropertyName(name, false);
    }
}

如果您的另一个API JSON响应如下所示:

{
  "some_object" : "someValue",
}

那么您的实体应该看起来像:

public class MyEntity
{
     public object SomeObject { get; set;}
}