Blazor Server是一种用于创建Web应用程序的框架，而jwt是一种用于身份验证和授权的承载类型。在Blazor Server应用程序中，您可以使用jwt进行身份验证和授权。

下面是使用jwt进行身份验证和授权的步骤：

1. 在您的Blazor Server应用程序中，安装JWT扩展程序包。

Install-Package Microsoft.AspNetCore.Authentication.JwtBearer -Version 3.1.0

2. 配置JWT身份验证。

public void ConfigureServices(IServiceCollection services)
{
    services.AddAuthentication(options =>
    {
        options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
        options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
    })
    .AddJwtBearer(options =>
    {
        options.Authority = Configuration["Jwt:Authority"];
        options.Audience = Configuration["Jwt:Audience"];
    });
}

3. 在您的Blazor Server应用程序中创建一个JwtService类，该类将处理所有与jwt相关的操作。

public class JwtService
{
    private readonly IConfiguration _configuration;
    private readonly HttpClient _httpClient;

    public JwtService(IConfiguration configuration, HttpClient httpClient)
    {
        _configuration = configuration;
        _httpClient = httpClient;
    }

    public async Task GetJwtAsync(string username, string password)
    {
        var json = JsonSerializer.Serialize(new { username, password });
        var data = new StringContent(json, Encoding.UTF8, "application/json");
        var response = await _httpClient.PostAsync(_configuration["Jwt:Authority"] + "/login", data);
        var token = await response.Content.ReadAsStringAsync();
        return token;
    }
}

4. 在您的Blazor Server应用程序中，使用JwtService类进行身份验证和授权。

@page "/securepage"
@attribute [Authorize]

@inject JwtService JwtService

Secure Page

@if (IsAuthenticated)
{
    
You are authenticated.
}
else
{
    
You need to log in!
    Log in
}

@code {
    private