Web API令牌身份验证抛出异常没有配置身份验证处理程序来处理方案:Microsoft.AspNet.Identity

Question

我使用ASP实现了Web API的令牌身份验证。遵循以下帖子中提到的解决方案基于令牌的ASP认证。网络核心

为了实现身份验证逻辑，我定义了以下方法

public async Task<bool> AuthenticateUser(string email, string password)
{
    UserManager<ApplicationUser> _userManager = HttpContext.ApplicationServices.GetService(typeof(UserManager<ApplicationUser>)) as UserManager<ApplicationUser>;
    SignInManager<ApplicationUser> _signInManager = HttpContext.ApplicationServices.GetService(typeof(SignInManager<ApplicationUser>)) as SignInManager<ApplicationUser>;
    var result = await _signInManager.PasswordSignInAsync(email, password, isPersistent: false, lockoutOnFailure: false);
    if (result.Succeeded)
    {                
        return true;
    }
    else
    {
        return false;
    }
}

和Post方法的调用是

[HttpPost]        
public dynamic Post([FromBody] AuthRequest req)
{
string email = req.username;
string password = req.password;
try
{
    bool isAuthenticated = false; 
    //implement the authentication logic over here
    isAuthenticated = AuthenticateUser(email, password).Result;
    if (isAuthenticated)
    {
        DateTime? expires = DateTime.UtcNow.AddDays(2);
        var token = GetToken(req.username, expires);
        return new { authenticated = true, entityId = 1, token = token, tokenExpires = expires };
    }
}
catch (Exception ex)
{
    return new { authenticated = false, message = "Exception: " +  ex.Message, detailedmessage = ex.InnerException};
}
return new { authenticated = false };
}

现在的问题是…

Post在第一次调用时执行良好并返回期望的结果，然而，在第二次调用时，它抛出以下异常

没有配置认证处理程序来处理方案:Microsoft.AspNet.Identity.Application

在调试时，我发现当执行以下行时抛出此异常

var result = await _signInManager.PasswordSignInAsync(email, password, isPersistent: false, lockoutOnFailure: false);

第一次调用时正常工作，但在所有后续调用时抛出异常。

我一直在寻找这个问题在过去的2天，所有我发现的是，在Startup.cs app.UseIdentity();应在添加身份验证中间件之前调用。它已经在我的代码中发生了。

Answer 1

将AuthenticateUser()方法中的HttpContext.ApplicationServices.GetService()改为HttpContext.RequestServices.GetService()。我的更新方法是

public async Task<bool> AuthenticateUser(string email, string password)
    {                        
        UserManager<ApplicationUser> _userManager = HttpContext.RequestServices.GetService(typeof(UserManager<ApplicationUser>)) as UserManager<ApplicationUser>;
        SignInManager<ApplicationUser> _signInManager = HttpContext.RequestServices.GetService(typeof(SignInManager<ApplicationUser>)) as SignInManager<ApplicationUser>;
        var result = await _signInManager.PasswordSignInAsync(email, password, isPersistent: false, lockoutOnFailure: false);
        if (result.Succeeded)
        {                
            return true;
        }
        else
        {
            return false;
        }
    }