ASP.NET 5 MVC 6 XML響應標頭

Question

我有一個控制器返回一個自定義的XML字符串，因爲使用Api的應用程序需要一個沒有任何屬性的特定格式，並且沒有默認XML字符串上的<?xml ... />標籤。 編輯：消費者也沒有要求'text/xml'的請求標頭。

我在我的Startup.cs ConfigureServices看起來是這樣的：

public void ConfigureServices(IServiceCollection services) 
    { 
     // Add framework services. 
     var mvc = services.AddMvc(); 

     mvc.AddMvcOptions(options => 
     { 
      options.InputFormatters.Remove(new JsonInputFormatter()); 
      options.OutputFormatters.Remove(new JsonOutputFormatter()); 
     }); 

     mvc.AddXmlDataContractSerializerFormatters(); 
    } 

在我的控制，我已經嘗試了一些解決方案，我已經上網（註釋掉）上找到，但沒有給我的XML內容與響應頭 '的Content-Type：application/xml進行' 鉻devtools：

[HttpGet("{ssin}")] 
[Produces("application/xml")] 
public string Get(string ssin) 
{  
    var xmlString = ""; 
    using (var stream = new StringWriter()) 
    { 
     var xml = new XmlSerializer(person.GetType()); 
     xml.Serialize(stream, person); 
     xmlString = stream.ToString(); 
    } 
    var doc = XDocument.Parse(xmlString); 
    doc.Root.RemoveAttributes(); 
    doc.Descendants("PatientId").FirstOrDefault().Remove(); 
    doc.Descendants("GeslachtId").FirstOrDefault().Remove(); 
    doc.Descendants("GeboorteDatumUur").FirstOrDefault().Remove(); 
    doc.Descendants("OverledenDatumUur").FirstOrDefault().Remove(); 
    Response.ContentType = "application/xml"; 
    Response.Headers["Content-Type"] = "application/xml"; 

    /*var response = new HttpResponseMessage 
    { 
     Content = new StringContent(doc.ToString(), Encoding.UTF8, "application/xml"), 
    };*/ 
    return doc.ToString(); //new HttpResponseMessage { Content = new StringContent(doc., Encoding.UTF8, "application/xml") }; 
} 

我能設法得到它與應用程序/ xml的迴應？

EDIT1（盧卡蓋爾西的回答後）： Startup.cs：

public Startup(IHostingEnvironment env) 
    { 
     // Set up configuration sources. 
     var builder = new ConfigurationBuilder() 
      .AddJsonFile("appsettings.json") 
      .AddEnvironmentVariables(); 
     Configuration = builder.Build(); 
    } 

    public IConfigurationRoot Configuration { get; set; } 

    // This method gets called by the runtime. Use this method to add services to the container. 
    public void ConfigureServices(IServiceCollection services) 
    { 
     // Add framework services. 
     var mvc = services.AddMvc(config => { 
      config.RespectBrowserAcceptHeader = true; 
      config.InputFormatters.Add(new XmlSerializerInputFormatter()); 
      config.OutputFormatters.Add(new XmlSerializerOutputFormatter()); 
     }); 

     mvc.AddMvcOptions(options => 
     { 
      options.InputFormatters.Remove(new JsonInputFormatter()); 
      options.OutputFormatters.Remove(new JsonOutputFormatter()); 
     }); 

     //mvc.AddXmlDataContractSerializerFormatters(); 
    } 
    /* 
    * Preconfigure if the application is in a subfolder/subapplication on IIS 
    * Temporary fix for issue: https://github.com/aspnet/IISIntegration/issues/14 
    */ 
    public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory) 
    { 
     app.Map("/rrapi", map => ConfigureApp(map, env, loggerFactory)); 
    } 


    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline. 
    public void ConfigureApp(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory) 
    { 
     loggerFactory.AddConsole(Configuration.GetSection("Logging")); 
     loggerFactory.AddDebug(); 

     //app.UseIISPlatformHandler(); 

     app.UseMvc(routes => 
     { 
      routes.MapRoute(
       name: "default", 
       template: "{controller=Home}/{action=Index}/{id?}"); 
     }); 
    } 

    // Entry point for the application. 
    public static void Main(string[] args) => WebApplication.Run<Startup>(args); 

控制器：

 [HttpGet("{ssin}")] 
    [Produces("application/xml")] 
    public IActionResult Get(string ssin) 
    { 
     var patient = db.Patienten.FirstOrDefault(
      p => p.Rijksregisternummer.Replace(".", "").Replace("-", "").Replace(" ", "") == ssin 
     ); 

     var postcode = db.Postnummers.FirstOrDefault(p => p.PostnummerId == db.Gemeentes.FirstOrDefault(g => 
      g.GemeenteId == db.Adressen.FirstOrDefault(a => 
       a.ContactId == patient.PatientId && a.ContactType == "pat").GemeenteId 
      ).GemeenteId 
     ).Postcode; 

     var person = new person 
     { 
      dateOfBirth = patient.GeboorteDatumUur.Value.ToString(""), 
      district = postcode, 
      gender = (patient.GeslachtId == 101 ? "MALE" : "FEMALE"), 
      deceased = (patient.OverledenDatumUur == null ? "FALSE" : "TRUE"), 
      firstName = patient.Voornaam, 
      inss = patient.Rijksregisternummer.Replace(".", "").Replace("-", "").Replace(" ", ""), 
      lastName = patient.Naam 
     }; 
     var xmlString = ""; 
     using (var stream = new StringWriter()) 
     { 
      var opts = new XmlWriterSettings { OmitXmlDeclaration = true }; 
      using (var xw = XmlWriter.Create(stream, opts)) 
      { 
       var xml = new XmlSerializer(person.GetType()); 
       xml.Serialize(xw, person); 
      } 
      xmlString = stream.ToString(); 
     } 
     var doc = XDocument.Parse(xmlString); 
     doc.Root.RemoveAttributes(); 
     doc.Descendants("PatientId").FirstOrDefault().Remove(); 
     doc.Descendants("GeslachtId").FirstOrDefault().Remove(); 
     doc.Descendants("GeboorteDatumUur").FirstOrDefault().Remove(); 
     doc.Descendants("OverledenDatumUur").FirstOrDefault().Remove(); 

     return Ok(doc.ToString()); 

Answer 1

貌似這個article是你在找什麼。 而不是試圖做手工，你應該嘗試的XML格式，如：

// Add framework services. 
    services.AddMvc(config => 
    { 
    // Add XML Content Negotiation 
    config.RespectBrowserAcceptHeader = true; 
    config.InputFormatters.Add(new XmlSerializerInputFormatter()); 
    config.OutputFormatters.Add(new XmlSerializerOutputFormatter()); 
    }); 

這outputFormatter dependes上：

"Microsoft.AspNet.Mvc.Formatters.Xml": "6.0.0-rc1-final" 

而且你需要離開[Produces("application/xml")]的方法，屬性爲詳細這answer。

查看MVC 6中有關Formatters的非常詳細的文章。它是更新後的版本。我想這會有所幫助。

要修改responde將如何產生你可以使用XmlWriterSettings選擇對象，像這樣（更多信息here）：

var settings = new XmlWriterSettings { OmitXmlDeclaration = true }; 
config.OutputFormatters.Add(new XmlSerializerOutputFormatter(settings); 

希望它能幫助！

Answer 2

創建一個XmlWriter填充選項來阻止創建XML聲明。然後使用XmlSerializer.Serialize重載之一，該值爲XmlWriter。該XmlWriter可以寫入字符串（見here）：

using (var sw = new StringWriter()) { 
    var opts = new XmlWriterSettings { OmitXmlDeclaration = true }; 
    using (var xw = XmlWriter.Create(sw, opts) { 

    xml.Serialize(xw, person); 

    } 
    xmlString = sw.ToString(); 
} 

NB您已經設置Response.ContentType因此別的東西，如果重寫此。檢查可能超越設置的過濾器和模塊。