Question

我正在开发一个带有多个端点的简单.NET Core API。

我需要将请求中的Content-Type作为特定于供应商的媒体类型返回，“application / vnd.com.myhomepay.api.ste.location-code + json”。但是，每当我设置Response.Headers.Add（“Content-Type”，“application / vnd.com.myhomepay.api.ste.location-code + json”）时，我都会得到一个带有Response的406状态代码。我已经阅读了我需要将此自定义MediaTypeHeaderValue添加到SupportedMediaTypes列表的位置，但我无法弄清楚如何在.Net Core中执行此操作。任何有关实现此目的的提示或建议。我还阅读了使用IOutputFormatter的更复杂的方法。

每个端点都有自己的供应商特定符号，将在Response的Content-Type标头中传回。

我尝试过的选项1：

Startup.cs

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc(options =>
    {
        options.RespectBrowserAcceptHeader = true;
         options.FormatterMappings.SetMediaTypeMappingForFormat("application/json", "application/vnd.com.myhomepay.api.ste.location-code+json;version=1");
         options.FormatterMappings.SetMediaTypeMappingForFormat("application/json", "application/vnd.com.myhomepay.api.ste.tax-calculation+json;version=1");
    });
}

Controller.cs

  [Produces("application/vnd.com.myhomepay.api.ste.location-code+json;version=1")]
  [HttpGet]
  public IActionResult Get()
  {
      DailyReportAbbreviated dailyreport;
      .....
      return new OkObjectResult(dailyreport);
  }

请求“Accept”标头设置为“application / vnd.com.myhomepay.api.ste.location-code + json; version = 1”

这将返回Status Cod 406 Not Acceptable

选项2：

我刚从控制器中删除了“Produces”属性并添加了：

Controller.cs

  [HttpGet]
  public IActionResult Get()
  {
      DailyReportAbbreviated dailyreport;
      .....
      Response.Headers.Add("Content-Type", "application/vnd.com.myhomepay.api.ste.location-code+json");
      return new OkObjectResult(dailyreport);
  }

这将返回Status Cod 406 Not Acceptable

选项3：

此选项似乎正在运作

Starup.cs

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc(options =>
    {
        options.RespectBrowserAcceptHeader = true;
        options.OutputFormatters.Insert(0, new JsonOutputFormatter()); 
    });
}

JsonOutputFormatter.cs

public class JsonOutputFormatter : IOutputFormatter
{
    public bool CanWriteResult(OutputFormatterCanWriteContext context)
    {
         return true;
    }

    public async Task  WriteAsync(OutputFormatterWriteContext context)
    {
         if (context == null) throw new ArgumentNullException(nameof(context));
         var response = context.HttpContext.Response;
         //context.ContentType returns the string set on the "Produces" attribute that is set on the controller
         response.ContentType = context.ContentType.ToString();
         using (var writer = context.WriterFactory(response.Body, Encoding.UTF8))
         {
             await writer.WriteAsync(JsonConvert.SerializeObject(context.Object));
         }
    }
}

Controller.cs

  [Produces("application/vnd.com.myhomepay.api.ste.location-code+json;version=1")]
  [HttpGet]
  public IActionResult Get()
  {
      DailyReportAbbreviated dailyreport;
      .....
      return new OkObjectResult(dailyreport);
  }

.Net Core，将响应内容类型设置为供应商特定媒体类型

0 个答案: