blocks|key|2574984|text|如果您使用Jwt，您不应该添加标识:+AddDefaultIdentity扩展方法用于为autentication...Note页面和MVC添加默认的UI服务。而且它还要求您添加StaticFiles。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2574985|2574986|另请注意Configure方法中的附加代码及其排列|blockquote|2574987|2574988|2574989|在您的启动类中尝试以下内容：|2574990|+public+class+Startup
{
++++//add
++++public+IConfiguration+Configuration+{+get;+}
++++public+Startup(IConfiguration+configuration)
++++{
++++++++Configuration+=+configuration;
++++}


++++//+This+method+gets+called+by+the+runtime.+Use+this+method+to+add+services+to+the+container.
++++//+For+more+information+on+how+to+configure+your+application,+visit+https://go.microsoft.com/fwlink/?LinkID=398940
++++public+void+ConfigureServices(IServiceCollection+services)
++++{
++++++++services.AddMvc().AddNewtonsoftJson();

++++++++services.AddTransient<IJwtTokenService,+JwtTokenService>();


++++++++//Setting+up+Jwt+Authentication
++++++++services.AddAuthentication(options+=>
++++++++{
++++++++++++options.DefaultAuthenticateScheme+=+JwtBearerDefaults.AuthenticationScheme;
++++++++++++options.DefaultChallengeScheme+=+JwtBearerDefaults.AuthenticationScheme;
++++++++})
++++++++++++.AddJwtBearer(options+=>
++++++++++++{
++++++++++++++++options.TokenValidationParameters+=+new+TokenValidationParameters
++++++++++++++++{
++++++++++++++++++++ValidateIssuer+=+true,
++++++++++++++++++++ValidateAudience+=+true,
++++++++++++++++++++ValidateLifetime+=+true,
++++++++++++++++++++ValidateIssuerSigningKey+=+true,
++++++++++++++++++++ValidIssuer+=+Configuration["Jwt:Issuer"],
++++++++++++++++++++ValidAudience+=+Configuration["Jwt:Audience"],
++++++++++++++++++++IssuerSigningKey+=+new+SymmetricSecurityKey(Encoding.UTF8.GetBytes(Configuration["Jwt:Key"]))
++++++++++++++++};
++++++++++++});


++++++++services.AddResponseCompression(opts+=>
++++++++{
++++++++++++opts.MimeTypes+=+ResponseCompressionDefaults.MimeTypes.Concat(
++++++++++++++++new[]+{+"application/octet-stream"+});
++++++++});
++++}

+//+This+method+gets+called+by+the+runtime.+Use+this+method+to+configure+the+HTTP+request+pipeline.
++++++++public+void+Configure(IApplicationBuilder+app,+IWebHostEnvironment+env)
++++++++{
++++++++++++app.UseResponseCompression();

++++++++++++if+(env.IsDevelopment())
++++++++++++{
++++++++++++++++app.UseDeveloperExceptionPage();
++++++++++++++++app.UseBlazorDebugging();
++++++++++++}

app.UseRouting();
app.UseAuthentication();
app.UseAuthorization();
app.UseEndpoints(routes+=>
+++++{
+++++++++routes.MapDefaultControllerRoute();
+++++});

++++app.UseBlazor<Client.Startup>();
++++++++}
++++}|code-block|syntax|javascript|2574991|}|2574992|希望这能帮到你。|2574993|更新1：*用上面的代码更新你的启动类*像这样注释你的SampleDataController控制器：|2574994|[Authorize(AuthenticationSchemes+=+JwtBearerDefaults.AuthenticationScheme)]+
[Route("api/[controller]")]
++++public+class+SampleDataController+:+Controller
++++{
++++//+..
++++}|2574995|2574996|2574997|2574998|响应应包含创建的JwtToken|2574999|执行流程摘要:将get请求发布到您的Web+Api。路由点WeatherForecasts的请求被重定向到令牌控制器，该控制器的目的是创建一个JWT令牌并将其返回给调用者。|2575000|要做的事情：|2575001|2575002|创建一个服务来存储JWT令牌:该服务可以使用LocalStorage和SessionStorage的Blazor扩展来存储和检索JWT令牌。|unordered-list-item|2575003|2575004|注意:您可以将Jwt令牌作为cookie从服务器传递给Blazor，其中包含有关用户的更多详细信息。|2575005|2575006|2575007|我们查询我们的IsAutenticated方法。如果用户已通过身份验证，则检索Jwt令牌并将其添加到通过HttpClient调用传递的headers集合中。|2575008|还有更多的..。|2575009|你看到了吗？|2575010|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1M|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|1N|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|1O|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|1P|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|1R|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|1S|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|1T|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1U|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1V|8|@]|9|@]|A|$]]|$1|U|3|V|5|L|7|1W|8|@]|9|@]|A|$M|N]]|$1|W|3|-4|5|6|7|1X|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|Z|3|10|5|6|7|20|8|@]|9|@]|A|$]]|$1|11|3|12|5|6|7|21|8|@]|9|@]|A|$]]|$1|13|3|14|5|6|7|22|8|@]|9|@]|A|$]]|$1|15|3|-4|5|6|7|23|8|@]|9|@]|A|$]]|$1|16|3|17|5|18|7|24|8|@]|9|@]|A|$]]|$1|19|3|-4|5|6|7|25|8|@]|9|@]|A|$]]|$1|1A|3|1B|5|6|7|26|8|@]|9|@]|A|$]]|$1|1C|3|-4|5|6|7|27|8|@]|9|@]|A|$]]|$1|1D|3|-4|5|6|7|28|8|@]|9|@]|A|$]]|$1|1E|3|1F|5|6|7|29|8|@]|9|@]|A|$]]|$1|1G|3|1H|5|6|7|2A|8|@]|9|@]|A|$]]|$1|1I|3|1J|5|6|7|2B|8|@]|9|@]|A|$]]|$1|1K|3|-4|5|6|7|2C|8|@]|9|@]|A|$]]]|1L|$]]

You shouldn't add identity if you use Jwt autentication...Note: AddDefaultIdentity extension method is used to add the default UI service for Razor Pages and MVC. And it also requires you to add StaticFiles. 

<blockquote>
 Note also the additional code and its arrangement in the Configure
 method
</blockquote>

Try this in your startup class:

<pre><code> public class Startup
{
 //add
 public IConfiguration Configuration { get; }
 public Startup(IConfiguration configuration)
 {
 Configuration = configuration;
 }


 // This method gets called by the runtime. Use this method to add services to the container.
 // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
 public void ConfigureServices(IServiceCollection services)
 {
 services.AddMvc().AddNewtonsoftJson();

 services.AddTransient&lt;IJwtTokenService, JwtTokenService&gt;();


 //Setting up Jwt Authentication
 services.AddAuthentication(options =&gt;
 {
 options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
 options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
 })
 .AddJwtBearer(options =&gt;
 {
 options.TokenValidationParameters = new TokenValidationParameters
 {
 ValidateIssuer = true,
 ValidateAudience = true,
 ValidateLifetime = true,
 ValidateIssuerSigningKey = true,
 ValidIssuer = Configuration["Jwt:Issuer"],
 ValidAudience = Configuration["Jwt:Audience"],
 IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(Configuration["Jwt:Key"]))
 };
 });


 services.AddResponseCompression(opts =&gt;
 {
 opts.MimeTypes = ResponseCompressionDefaults.MimeTypes.Concat(
 new[] { "application/octet-stream" });
 });
 }

 // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
 public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
 {
 app.UseResponseCompression();

 if (env.IsDevelopment())
 {
 app.UseDeveloperExceptionPage();
 app.UseBlazorDebugging();
 }

app.UseRouting();
app.UseAuthentication();
app.UseAuthorization();
app.UseEndpoints(routes =&gt;
 {
 routes.MapDefaultControllerRoute();
 });

 app.UseBlazor&lt;Client.Startup&gt;();
 }
 }
</code></pre>

}

Hope this helps...

Update 1:
* Update your Startup class with the code above
* Annotate your SampleDataController controller like this:

<pre><code>[Authorize(AuthenticationSchemes = JwtBearerDefaults.AuthenticationScheme)] 
[Route("api/[controller]")]
 public class SampleDataController : Controller
 {
 // ..
 }
</code></pre>

<ul>
<li>Run your application, and then post a get http request in Postman or Fiddler for the url: </li>
</ul>

<blockquote>
 api/SampleData/WeatherForecasts
</blockquote>

The response should contain the created JwtToken

Summary of the flow of execution: Posting a get request to your Web Api. The request to the route point WeatherForecasts is redirected to the Token controller whose purpose is to create a Jwt token and return it to the caller. Note that this controller does not verify the identity of the the user on whose behalf this request was send...

TO DO:

<ul>
<li>Create a service to store the Jwt token:
This service can use Blazor extensions for LocalStorage and SessionStorage to store and retrieve Jwt Tokens. This service may contain methods such as IsAutenticated, GetToken, etc.</li>
</ul>

Note: That you may pass the Jwt Token from the server to Blazor with more details about the user as a cookie. 

<ul>
<li>Create a Login Component to login the user, if he is not already logged in and tries to access secure resource</li>
</ul>

Note: If the user is already authenticated, he's not redirected to the Login form. Instead we issue an http request to the server, in order to retrieve the rsources needed in Blazor, if that is the case. 

Note: How do we know if our user is authenticated ? We query our IsAutenticated method. If the user is authenticated, if retrieve the Jwt Token and add it to the headers collection passed with our HttpClient call.

More to come...

Do you see it ?

following this <a href="https://github.com/iapicca/Blazor_Auth_Demo_2/tree/master" rel="noreferrer">tutorial</a>I've encountered a problem in the Startup.cs file:

(need to scroll down a bit, sorry)

the issue is with default identity, getting the following error:

"IServiceCollection does not contain a definition for AddDefaultIdentity and no accessible extension method AddDefaultIdentity accepting a first argument of type" IServiceCollection could be found(are you missing a using directive or an assembly reference?)"

I looked up the <a href="https://docs.microsoft.com/en-us/aspnet/core/security/authentication/identity?view=aspnetcore-2.2&amp;tabs=visual-studio" rel="noreferrer">documentation</a>, but I'm missing what error I'm making,
I've seen a bunch of cases similar to mine, but their solution (included) doesn't seems to work. I can us some help, thanks in advance.

"my" code is <a href="https://github.com/iapicca/Blazor_Auth_Demo_2/tree/master" rel="noreferrer">HERE</a> if you want to take a look

Blazor: IServiceCollection does not contain a definition for AddDefaultIdentity

身份验证

服务器

路由

在这个之后，我在Startup.cs文件中遇到了一个问题：(需要向下滚动一点，抱歉)问题出在默认标识上，出现以下错误："IServiceCollection不包含AddDefaultIdentity的定义，也没有可访问的扩展方法AddDefaultIdentity接受类型为“IServiceCollection and...

问IServiceCollection不包含AddDefaultIdentity的定义
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