C# 在ASP.NET Core中如何返回xml格式的API响应

builder.Services.AddControllers()

    .AddXmlSerializerFormatters(); // 支持 application/xml

public class Person

{

    public int Id { get; set; }

    public string Name { get; set; }

}

[ApiController]

[Route("[controller]")]

public class PeopleController : ControllerBase

{

    [HttpGet("{id}")]

    public IActionResult Get(int id)

    {

        var person = new Person { Id = id, Name = "张三" };

        return Ok(person); // 自动根据 Accept 头选择格式

    }

}

<Person xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

  <Id>1</Id>

  <Name>张三</Name>

</Person>

using System.Xml.Serialization;

using System.IO;

// ...

[HttpGet("xml/{id}")]

public ContentResult GetXml(int id)

{

    var person = new Person { Id = id, Name = "李四" };

    var serializer = new XmlSerializer(typeof(Person));

    using var writer = new StringWriter();

    serializer.Serialize(writer, person);

    return new ContentResult

    {

        ContentType = "application/xml",

        Content = writer.ToString(),

        StatusCode = 200

    };

}