Question

我有一个有几名控制员的网络信息预报系统,其中一人由于遗留原因返回了XML,而其他所有的人都返回了JSON。

在“网络框架一”中,可以有选择地通过使用<代码>HttpControllerSettings.Formatters(通常用一种特性来分解控制器)。

Is it possible to do the same in ASP.NET Core, i.e. only enable Xml serialization for a single controller?

我发现的唯一途径是使协会的Xml序列化。 NET Core 2.1 isglobal, using:

services.AddMvc()
     .SetCompatibilityVersion(CompatibilityVersion.Version_2_1)
     .AddXmlSerializerFormatters();

这一工作是科索沃的,但我认为是不可取的副作用:在我管理视觉演播室一号应用时,见<密码>的警告痕迹。 XmlSerializerOutputFormatter 例如:

Microsoft.AspNetCore.Mvc.Formatters.XmlSerializerOutputFormatter:Warning: An error occurred while trying to create an XmlSerializer for the type  MyApp.MyModel .

System.InvalidOperationException: There was an error reflecting type  MyApp.MyModel . ---> System.InvalidOperationException: Cannot serialize member ... see inner exception for more details. ---> System.NotSupportedException: Cannot serialize ... because it is an interface.
   --- End of inner exception stack trace ---
   at System.Xml.Serialization.StructModel.CheckSupportedMember(TypeDesc typeDesc, MemberInfo member, Type type)
   ...
   at System.Xml.Serialization.XmlSerializer..ctor(Type type, String defaultNamespace)
   at System.Xml.Serialization.XmlSerializer..ctor(Type type)
   at Microsoft.AspNetCore.Mvc.Formatters.XmlSerializerOutputFormatter.CreateSerializer(Type type)

它似乎试图为我的“XML”控制器没有使用的类型建立一个<代码>XmlSerializer。

虽然这不是一个 shows子,但我更希望不要制造XmlSerializer,除非我需要。

Answer 1

我也遇到了同样的问题。我并不认为目前存在一种解决办法,因此,我创立了。

In the meantime, I ve set

"Logging": { 
    "LogLevel": {
        "Microsoft.AspNetCore.Mvc.Formatters.XmlSerializerOutputFormatter":  "Error"
    }
}

在启动期间压制警告。

Answer 2

我也遇到了同样的问题。然后我修改了我的法典:

builder.Services.AddControllers().AddNewtonsoftJson().AddXmlSerializerFormatters();

我们可以从上查到这一点,我希望这是有益的。

Answer 3

我也有同样的问题。

通过确定生产者归属于引起这一问题的行动/json。

[HttpGet]
[Route("yourroute")]
[Produces("application/json")]
public async Task<IActionResult<Whatever> GetSomething() {

Answer 4

没有一种“盒式”的方式来做到这一点,没有人工序列化,也没有通过<代码>FileContentRes或类似方式返回。但是,你可以增加一个“标识”类别和格式,专门处理标识类别。

Steps are:

Define a marker wrapper struct which wraps the value to be serialized/deserialized.
_{(Example Implementation)}
Define a TextInputFormatter/TextOutputFormatter which read/write your marker class using XmlSerializable.
_{(MSDN Guidance, Example Input Implementation, Example Output Implementation)}
Register the formatters earlier in the list than DCS in MvcOptions.
_{(Example Implementation)}
Optionally: Add a JsonConverter to the marker class to make it invisible to JSON

An implementation of this is available in Rmg.AspNetCore.ByXmlSerializer (Nuget, MIT Licensed). Example use:

// Add Nuget reference to Rmg.AspNetCore.ByXmlSerializer

// in Program.cs
builder.Services.AddControllers()
    .AddByXmlSerializerFormatters()
    .AddXmlDataContractSerializerFormatters();

// in controller
[HttpGet("xs")]
public ByXmlSerializer<WeatherForecast[]> GetWeatherForecastXmlSerializer()
{
    WeatherForecast[] result = /* ... */;
    return result;
}

// or for input
[HttpPost("postxs")]
public void PostWeatherForecastXs([FromBody] ByXmlSerializer<ForecastArea> area)
{
    // ...
}

友情链接