关于ASP.NetCoreWeb及API身份认证的解决方案

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https://www.cnblogs.com/ibeisha/p/jwt-webapi.html

.NetCore自发布以来，颇受关注，现在.Net Core2.0已经正式发布，边迫不及待的将.Net跨平台移植的工作进行到底。想来，也费不了多少事儿。我经常和同事们说，要敢于尝试新鲜事物，不阴损守旧，方能使自己不断进步，站在队伍的前列。下面就关于Asp.Net Core在Web 及API项目上身份认证的问题做下简单的阐述。

一、Asp.Net Core Web项目的登录认证

在MVC Web项目中，做用户登录授权，是必不可少的工作，不知道大家平时是怎么做的，我想，大多朋友还是使用微软提供的一套认证机制，可以省去很多功夫。从WebForm时代的Form身份认证，无非是通过客户端Cookie中存储认证票据，在请求受保护的资源时，通过Cookie中携带的身份票据，再有Asp.net的认证模块，完整对请求者的身份认证。这一过程，是很清晰简单的了。在MVC中，大多是通过中间件（MiddleWare）来完整认证授权过程。在ASP.NETMVC中，我们了解到基于声明的授权认证（Claim），这种认证方式，好处在于，我们想在用户授权时，存储多个属性信息，只需要添加多个声明即可，我们在微软的认证中间件中，看到的都是定义好的常量，当然，我们可以定义自己的ClaimTypes。然我们看看微软在.NetCore中定义的一些声明吧：

　　　　// Summary:

       //     http://schemas.xmlsoap.org/ws/2009/09/identity/claims/actor.

       public const string Actor = "http://schemas.xmlsoap.org/ws/2009/09/identity/claims/actor";

       //

       // Summary:

       //     The URI for a claim that specifies the postal code of an entity, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/postalcode.

       public const string PostalCode = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/postalcode";

       //

       // Summary:

       //     The URI for a claim that specifies the primary group SID of an entity, http://schemas.microsoft.com/ws/2008/06/identity/claims/primarygroupsid.

       public const string PrimaryGroupSid = "http://schemas.microsoft.com/ws/2008/06/identity/claims/primarygroupsid";

       //

       // Summary:

       //     The URI for a claim that specifies the primary SID of an entity, http://schemas.microsoft.com/ws/2008/06/identity/claims/primarysid.

       public const string PrimarySid = "http://schemas.microsoft.com/ws/2008/06/identity/claims/primarysid";

       //

       // Summary:

       //     The URI for a claim that specifies the role of an entity, http://schemas.microsoft.com/ws/2008/06/identity/claims/role.

       public const string Role = "http://schemas.microsoft.com/ws/2008/06/identity/claims/role";

       //

       // Summary:

       //     The URI for a claim that specifies an RSA key, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/rsa.

       public const string Rsa = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/rsa";

       //

       // Summary:

       //     The URI for a claim that specifies a serial number, http://schemas.microsoft.com/ws/2008/06/identity/claims/serialnumber.

       public const string SerialNumber = "http://schemas.microsoft.com/ws/2008/06/identity/claims/serialnumber";

       //

       // Summary:

       //     The URI for a claim that specifies a security identifier (SID), http://schemas.xmlsoap.org/ws/2005/05/identity/claims/sid.

       public const string Sid = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/sid";

       //

       // Summary:

       //     The URI for a claim that specifies a service principal name (SPN) claim, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/spn.

       public const string Spn = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/spn";

       //

       // Summary:

       //     The URI for a claim that specifies the state or province in which an entity resides,

       //     http://schemas.xmlsoap.org/ws/2005/05/identity/claims/stateorprovince.

       public const string StateOrProvince = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/stateorprovince";

       //

       // Summary:

       //     The URI for a claim that specifies the street address of an entity, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/streetaddress.

       public const string StreetAddress = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/streetaddress";

       //

       // Summary:

       //     The URI for a claim that specifies the surname of an entity, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/surname.

       public const string Surname = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/surname";

       //

       // Summary:

       //     The URI for a claim that identifies the system entity, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/system.

       public const string System = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/system";

       //

       // Summary:

       //     The URI for a claim that specifies a thumbprint, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/thumbprint.

       //     A thumbprint is a globally unique SHA-1 hash of an X.509 certificate.

       public const string Thumbprint = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/thumbprint";

       //

       // Summary:

       //     The URI for a claim that specifies a user principal name (UPN), http://schemas.xmlsoap.org/ws/2005/05/identity/claims/upn.

       public const string Upn = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/upn";

       //

       // Summary:

       //     The URI for a claim that specifies a URI, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/uri.

       public const string Uri = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/uri";

       //

       // Summary:

       //     http://schemas.microsoft.com/ws/2008/06/identity/claims/userdata.

       public const string UserData = "http://schemas.microsoft.com/ws/2008/06/identity/claims/userdata";

       //

       // Summary:

       //     http://schemas.microsoft.com/ws/2008/06/identity/claims/version.

       public const string Version = "http://schemas.microsoft.com/ws/2008/06/identity/claims/version";

       //

       // Summary:

       //     The URI for a claim that specifies the webpage of an entity, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/webpage.

       public const string Webpage = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/webpage";

       //

       // Summary:

       //     The URI for a claim that specifies the Windows domain account name of an entity,

       //     http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsaccountname.

       public const string WindowsAccountName = "http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsaccountname";

       //

       // Summary:

       //     http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsdeviceclaim.

       public const string WindowsDeviceClaim = "http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsdeviceclaim";

       //

       // Summary:

       //     http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsdevicegroup.

       public const string WindowsDeviceGroup = "http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsdevicegroup";

       //

       // Summary:

       //     http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsfqbnversion.

       public const string WindowsFqbnVersion = "http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsfqbnversion";

       //

       // Summary:

       //     http://schemas.microsoft.com/ws/2008/06/identity/claims/windowssubauthority.

       public const string WindowsSubAuthority = "http://schemas.microsoft.com/ws/2008/06/identity/claims/windowssubauthority";

       //

       // Summary:

       //     The URI for a claim that specifies the alternative phone number of an entity,

       //     http://schemas.xmlsoap.org/ws/2005/05/identity/claims/otherphone.

       public const string OtherPhone = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/otherphone";

       //

       // Summary:

       //     The URI for a claim that specifies the name of an entity, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier.

       public const string NameIdentifier = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier";

       //

       // Summary:

       //     The URI for a claim that specifies the name of an entity, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name.

       public const string Name = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name";

       //

       // Summary:

       //     The URI for a claim that specifies the mobile phone number of an entity, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/mobilephone.

       public const string MobilePhone = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/mobilephone";

       //

       // Summary:

       //     The URI for a claim that specifies the anonymous user; http://schemas.xmlsoap.org/ws/2005/05/identity/claims/anonymous.

       public const string Anonymous = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/anonymous";

       //

       // Summary:

       //     The URI for a claim that specifies details about whether an identity is authenticated,

       //     http://schemas.xmlsoap.org/ws/2005/05/identity/claims/authenticated.

       public const string Authentication = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/authentication";

       //

       // Summary:

       //     The URI for a claim that specifies the instant at which an entity was authenticated;

       //     http://schemas.microsoft.com/ws/2008/06/identity/claims/authenticationinstant.

       public const string AuthenticationInstant = "http://schemas.microsoft.com/ws/2008/06/identity/claims/authenticationinstant";

       //

       // Summary:

       //     The URI for a claim that specifies the method with which an entity was authenticated;

       //     http://schemas.microsoft.com/ws/2008/06/identity/claims/authenticationmethod.

       public const string AuthenticationMethod = "http://schemas.microsoft.com/ws/2008/06/identity/claims/authenticationmethod";

       //

       // Summary:

       //     The URI for a claim that specifies an authorization decision on an entity; http://schemas.xmlsoap.org/ws/2005/05/identity/claims/authorizationdecision.

       public const string AuthorizationDecision = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/authorizationdecision";

       //

       // Summary:

       //     The URI for a claim that specifies the cookie path; http://schemas.microsoft.com/ws/2008/06/identity/claims/cookiepath.

       public const string CookiePath = "http://schemas.microsoft.com/ws/2008/06/identity/claims/cookiepath";

       //

       // Summary:

       //     The URI for a claim that specifies the country/region in which an entity resides,

       //     http://schemas.xmlsoap.org/ws/2005/05/identity/claims/country.

       public const string Country = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/country";

       //

       // Summary:

       //     The URI for a claim that specifies the date of birth of an entity, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/dateofbirth.

       public const string DateOfBirth = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/dateofbirth";

       //

       // Summary:

       //     The URI for a claim that specifies the deny-only primary group SID on an entity;

       //     http://schemas.microsoft.com/ws/2008/06/identity/claims/denyonlyprimarygroupsid.

       //     A deny-only SID denies the specified entity to a securable object.

       public const string DenyOnlyPrimaryGroupSid = "http://schemas.microsoft.com/ws/2008/06/identity/claims/denyonlyprimarygroupsid";

       //

       // Summary:

       //     The URI for a claim that specifies the deny-only primary SID on an entity; http://schemas.microsoft.com/ws/2008/06/identity/claims/denyonlyprimarysid.

       //     A deny-only SID denies the specified entity to a securable object.

       public const string DenyOnlyPrimarySid = "http://schemas.microsoft.com/ws/2008/06/identity/claims/denyonlyprimarysid";

       //

       // Summary:

       //     The URI for a claim that specifies a deny-only security identifier (SID) for

       //     an entity, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/denyonlysid.

       //     A deny-only SID denies the specified entity to a securable object.

       public const string DenyOnlySid = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/denyonlysid";

       //

       // Summary:

       //     http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsuserclaim.

       public const string WindowsUserClaim = "http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsuserclaim";

       //

       // Summary:

       //     http://schemas.microsoft.com/ws/2008/06/identity/claims/denyonlywindowsdevicegroup.

       public const string DenyOnlyWindowsDeviceGroup = "http://schemas.microsoft.com/ws/2008/06/identity/claims/denyonlywindowsdevicegroup";

       //

       // Summary:

       //     http://schemas.microsoft.com/ws/2008/06/identity/claims/dsa.

       public const string Dsa = "http://schemas.microsoft.com/ws/2008/06/identity/claims/dsa";

       //

       // Summary:

       //     The URI for a claim that specifies the email address of an entity, http://schemas.xmlsoap.org/ws/2005/05/identity/claims/email.

       public const string Email = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress";

那么我们在Asp.Net Core项目中的认证，也是比较简单的。也是通过HttpContext的扩展方法SignInAsync，来传入声明的身份信息。要使用的微软的认证组件，我们在.Net Core Web项目中，做如下改动：

首先，在Start.cs类中，添加服务，具体代码如下：

/// <summary>

///

/// </summary>

/// <param name="services"></param>

public void ConfigureServices(IServiceCollection services)

{

services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)

.AddCookie(CookieAuthenticationDefaults.AuthenticationScheme, o =>

{

o.Cookie.Name = "_AdminTicketCookie";

o.LoginPath = new PathString("/Account/Login");

o.LogoutPath = new PathString("/Account/Login");

o.AccessDeniedPath = new PathString("/Error/Forbidden");

});

services.AddTransient<TiKu.Application.Interfaces.IAdminService, TiKu.Application.AdminService>();

services.AddMvc();

}

　　其次，添加认证中间件

/// <summary>
/// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
/// </summary>
/// <param name="app"></param>
/// <param name="env"></param>

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
 
    if (env.IsDevelopment())

    {

        app.UseDeveloperExceptionPage();

    }

    else

    {

        app.UseExceptionHandler("/Home/Error");

    }

    app.UseStaticFiles();

    app.UseAuthentication();//添加认证中间件

    app.UseMvc(routes =>

    {

        routes.MapRoute(

            name: "default",

            template: "{controller=Home}/{action=Index}/{id?}");

    });

}

　　最后，在用户登录的地方，登录成功后，调用HttpContext的SignIn方法，将授权信息写入Cookie，示例代码如下：

/// <summary>

/// <![CDATA[登陆]]>

/// </summary>

/// <param name="model"></param>

/// <returns></returns>

[HttpPost]

[ValidateAntiForgeryToken]

public async Task<ActionResult> Login(Models.LoginViewModel model)

{

try

{

//模型验证通过后

if (ModelState.IsValid)

{

model.password = TiKu.Common.Security.MD5.Md5(model.password);//MD5加密

TiKu.Domain.Entity.tb_Admin admin = await _AdminService.CheckAccountAndPassword(account: model.account, password: model.password);

//验证用户名密码

if (admin != null)

{

var identity = new ClaimsIdentity(CookieAuthenticationDefaults.AuthenticationScheme);//一定要声明AuthenticationScheme

identity.AddClaim(new Claim(ClaimTypes.Name, admin.Account));

identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, admin.Id.ToString()));

await HttpContext.SignInAsync(identity.AuthenticationType,

new ClaimsPrincipal(identity),

new AuthenticationProperties

{

IsPersistent = model.isPersistent,

RedirectUri = "/Home/Index",

ExpiresUtc = new System.DateTimeOffset(dateTime: DateTime.Now.AddHours(6)),

});

//更新登陆时间

await _AdminService.UpdateLastLoginTime(id: admin.Id);

}

else

{

await HttpContext.ChallengeAsync(CookieAuthenticationDefaults.AuthenticationScheme);

ModelState.AddModelError("", "用户名或密码错误！");

}

catch (Exception ex)

{

ModelState.AddModelError("", "用户名或密码错误！");

_Logger.Error("用户登录时发生错误！", ex);

}

return View(model);

}

　　这样就完成了Asp.net core web项目的登录认证工作。

二、Asp.Net Core WebApi基于JWT的认证授权

关于JWT的工作原理，大家可以自行了解（https://jwt.io/）。JWT实现了服务端无状态，在分布式服务，会话一致性，单点登录等方面，凸显优势，不占用服务端资源。使用JWT需要注意的是，令牌过期后刷新，以及更改密码后令牌未过期的处理问题。

这里，我以JWT作为.net core webapi项目的认证方式。

首先，我再Api项目中新建了一个名为OAuthController的控制器，定义一个Action名为Token的方法，用来让客户端获取令牌之用，具体代码如下：

/// <summary>
/// <![CDATA[获取访问令牌]]>
/// </summary>
/// <param name="user"></param>
/// <param name="password"></param>
/// <returns></returns>
[HttpPost]

public async Task<TiKu.Domain.ValueObject.RestfulData<TiKu.Domain.ValueObject.AccessTokenObj>> Token(string user, string password)
{

    var result = new TiKu.Domain.ValueObject.RestfulData<TiKu.Domain.ValueObject.AccessTokenObj>();

    try

    {

        if (string.IsNullOrEmpty(user)) throw new ArgumentNullException("user", "用户名不能为空！");

        if 

鲜花

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