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我有一個ASP.NET MVC5應用程序使用Microsoft.Owin 3.0.1配置爲CookieAuthentication。在我的應用程序中，我有一條我想用來基於使用Essential Objects EO.Pdf庫的Razor視圖生成PDF的路線。如何防止OWIN處理路由
當PDF生成過程開始時，會向服務器發出第二個請求，但該請求中不存在auth cookie。 OWIN拒絕請求並重定向到登錄頁面。
是否有可能告訴OWIN忽略某條特定路線？這裏是我的Startup.cs
public partial class Startup
{
// For more information on configuring authentication, please visit http://go.microsoft.com/fwlink/?LinkId=301864
public void ConfigureAuth(IAppBuilder app)
{
// Configure the db context and user manager to use a single instance per request
app.CreatePerOwinContext(ApplicationDbContext.Create);
app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
app.CreatePerOwinContext<ApplicationRoleManager>(ApplicationRoleManager.Create);
app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);
app.UseCookieAuthentication(new CookieAuthenticationOptions
{
AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
LoginPath = new PathString("/Account/Login"),
Provider = new CookieAuthenticationProvider
{
OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser>(
validateInterval: TimeSpan.FromMinutes(30),
regenerateIdentity: (manager, user) => user.GenerateUserIdentityAsync(manager))
}
});
app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);
}
}
這是導致例外，看似從Owin：
Exception information:
Exception type: HttpException
Exception message: Server cannot append header after HTTP headers have been sent.
at System.Web.HttpHeaderCollection.SetHeader(String name, String value, Boolean replace)
at System.Web.HttpHeaderCollection.Set(String name, String value)
at Microsoft.Owin.Host.SystemWeb.CallHeaders.AspNetResponseHeaders.Set(String key, String[] values)
at Microsoft.Owin.Host.SystemWeb.CallHeaders.AspNetResponseHeaders.set_Item(String key, String[] value)
at Microsoft.Owin.Infrastructure.OwinHelpers.SetHeaderUnmodified(IDictionary`2 headers, String key, String[] values)
at Microsoft.Owin.Infrastructure.OwinHelpers.AppendHeaderUnmodified(IDictionary`2 headers, String key, String[] values)
at Microsoft.Owin.HeaderDictionary.AppendValues(String key, String[] values)
at Microsoft.Owin.Infrastructure.ChunkingCookieManager.AppendResponseCookie(IOwinContext context, String key, String value, CookieOptions options)
at Microsoft.Owin.Security.Cookies.CookieAuthenticationHandler.<ApplyResponseGrantAsync>d__f.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
爲什麼還有第二個要求？這聽起來像是真正的問題... – 2015-04-02 20:21:24
我不完全確定PDF庫如何生成PDF響應，但它始終導致相同的IIS錯誤（在問題中更新） – 2015-04-02 20:37:49
簽出https://msdn.microsoft .COM/EN-US /庫/ dn337263（v = vs.113）的.aspx。但我同意@ErikPhilips，我將深入到底層問題的根源。 – 2015-04-02 20:43:24