如何使 ASP.NET 核心 return XML 结果？

Question

[HttpGet]
[HttpPost]
public HttpResponseMessage GetXml(string value)
{
    var xml = $"<result><value>{value}</value></result>";
    return new HttpResponseMessage
   {
       Content = new StringContent(xml, Encoding.UTF8, "application/xml")
   };
}

我使用 Swagger 调用了动作并传递了这个参数 'text value'

预期结果应该是这样的 XML 文件：文本值

实际结果：奇怪的json结果没有传递值！ https://www.screencast.com/t/uzcEed7ojLe

我尝试了以下解决方案但没有奏效：

services.AddMvc().AddXmlDataContractSerializerFormatters();
services.AddMvc().AddXmlSerializerFormatters();

Answer 1

对于ASP.NET核心2+，需要配置XmlDataContractSerializerOutputFormatter, it could be found from Nuget:

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc(c =>
    {
        c.OutputFormatters.Add(new XmlDataContractSerializerOutputFormatter());
    });
}

Answer 2

试试这个解决方案

[HttpGet]
[HttpPost]
public ContentResult GetXml(string value)
{
    var xml = $"<result><value>{value}</value></result>";
    return new ContentResult
    {
        Content = xml,
        ContentType = "application/xml",
        StatusCode = 200
    };
}

Answer 3

您的属性中缺少参数。
你可以把produces属性声明成什么类型的输出格式

可以拥抱IActionResult或者直接returnContentResult.

[HttpGet("{value}")]
[Produces("application/xml")]
public IActionResult GetXml(string value)
{
    var xml = $"<result><value>{value}</value></result>";
    //HttpResponseMessage response = new HttpResponseMessage();
    //response.Content = new StringContent(xml, Encoding.UTF8);
    //return response;

    return new ContentResult{
        ContentType = "application/xml",
        Content = xml,
        StatusCode = 200
    };
}

以上会给你

<result>
    <value>hello</value>
</result>

您可以参考以下link了解更多关于IActionResult

如何使 ASP.NET 核心 return XML 结果？

How to make ASP.NET Core return XML result?

c#

xml

asp.net-core

asp.net-core-webapi

webapi