在Web API应用程序中,我使用Castle Windsor提供使用PerWebRequest生命周期配置的服务,并且一切正常在IIS上运行.
但是,当我使用ASP.NET Web API Self Host(Beta)package时,我需要创建一个自定义生命周期,以便根据HTTP请求确定这些服务的范围.
如何使用HttpRequestMessage.Properties携带每个请求上下文？
解决方法
我建议你使用消息处理程序将你的对象设置为HttpRequestMessage.Property：
public class MyApplication : HttpApplication
{
protected void Application_Start()
{
RegisterHttpMessageHandlers(GlobalConfiguration.Configuration);
}
public void RegisterHttpMessageHandlers(HttpConfiguration config)
{
config.MessageHandlers.Add(new MyMessageHandler());
}
}
public static class MyHttpMessageHandlerExtensions
{
public static class HttpPropertyKey
{
public static readonly string MyProperty = "MyCompany_MyProperty";
}
public static MyContext GetContext(this HttpRequestMessage request)
{
return (MyContext)request.Properties[HttpPropertyKey.MyProperty ];
}
public static void SetContext(this HttpRequestMessage request,MyContext ctx)
{
request.Properties[HttpPropertyKey.MyProperty] = ctx;
}
}
public class MyMessageHandler : DelegatingHandler
{
protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request,CancellationToken cancellationToken)
{
request.SetContext(new MyContext(){/*some your data*/});
return base.SendAsync(request,cancellationToken);
}
}
public class MyController: ApiController
{
public object GetData()
{
MyContext ctx = this.Request.GetContext(); // the extenstion method is used
}
}
