Question

我尝试将自定义xml反序列化程序添加到我的某个控制器的ASP.Net Core管道中。我已经能够为JSON做到这样：

    public void ConfigureServices(IServiceCollection services)
    {
        // Add framework services.
        services.AddMvc();
        services.Configure<MvcOptions>(options =>
        {
            options.RespectBrowserAcceptHeader = true;

            // Input formatters
            var xmlInputFormatting = new XmlDataContractSerializerInputFormatter();
            var jsonInputFormatting = new JsonInputFormatter();
            jsonInputFormatting.SerializerSettings.Converters.Add(new BatchContentConverter());

            options.InputFormatters.Clear();
            options.InputFormatters.Add(jsonInputFormatting);
            options.InputFormatters.Add(xmlInputFormatting);
        }
    }

（为简洁起见，已删除了许多不必要的代码）。

最终结果的控制器操作是：

    public IActionResult Post([FromBody]IBatchContent batchContent)
    {
    }

有没有办法使用XMLSerializerInputFormatter或XmlDataContractSerializerInputFormatter为XML做类似的事情？我尝试创建一个来自DataContractResolver的类，并将其分配给SerializerSettings.DataContractResolver属性，但它似乎永远不会被调用。

Answer 1

默认情况下，Xml格式化程序不。您需要包含包含XmlSerializerInputFormatter，XmlSerializerOutputFormatter，XmlDataContractSerializerInputFormatter和XmlDataContractSerializerOutputFormatter的包Microsoft.AspNetCore.Mvc.Formatters.Xml

Answer 2

您只需要执行以下操作：

创建一个继承自“Microsoft.AspNetCore.Mvc.Formatters”命名空间中的“XmlSerializerInputFormatter”类的类，并覆盖受保护的方法“CreateSerializer”。方法摘要指出“[此方法]在反序列化期间调用以获取System.Xml.Serialization.XmlSerializer”。

public class IBatchCollectionXmlSerializer : XmlSerializerInputFormatter
{

    protected override XmlSerializer CreateSerializer(Type type)
    {
        //init expected type
        Type expectedType = typeof(IBatchContent);
        //init xml serializer
        XmlSerializer serializer = null;

        //if not expected type
        if (expectedType != type)
        {
            //return default serializer
            serializer = base.CreateSerializer(type);
        }
        //if expected type
        else
        {
            //add concrete type to deserialize to
            Type[] extraTypes = new Type[] { typeof (BatchContentConcrete) };
            //create custom xml serializer here
            serializer = new XmlSerializer(typeof(IBatchContent), extraTypes);
        }

        //return serializer
        return serializer;
    }
}

在Startup.cs文件中的mvc服务配置期间将其添加到输入格式化程序

services.Configure<MvcOptions>(options =>
{
    options.RespectBrowserAcceptHeader = true;

    // Input formatters
    var xmlInputFormatting = new IBatchCollectionXmlSerializer();
    var jsonInputFormatting = new JsonInputFormatter();
    jsonInputFormatting.SerializerSettings.Converters.Add(new BatchContentConverter());

    options.InputFormatters.Clear();
    options.InputFormatters.Add(jsonInputFormatting);
    options.InputFormatters.Add(xmlInputFormatting);
}

在Asp.NET Core MVC中反序列化XML

2 个答案: