Blazor身份验证提供程序通常使用浏览器的本地存储或Cookie（如果配置为这样）来存储JWT令牌。以下是一个示例，使用浏览器的本地存储来存储JWT令牌：

using Microsoft.AspNetCore.Components.Authorization;
using System.Security.Claims;
using System.Threading.Tasks;
using Microsoft.JSInterop;

public class LocalStorageAuthenticationStateProvider : AuthenticationStateProvider
{
    private readonly IJSRuntime _jsRuntime;

    public LocalStorageAuthenticationStateProvider(IJSRuntime jsRuntime)
    {
        _jsRuntime = jsRuntime;
    }

    public override async Task GetAuthenticationStateAsync()
    {
        var localStorageToken = await _jsRuntime.InvokeAsync("localStorage.getItem", "authToken");
        if (string.IsNullOrEmpty(localStorageToken))
        {
            return new AuthenticationState(new ClaimsPrincipal());
        }
        else
        {
            // Validate and parse the token
            var claims = new[] { new Claim("token", localStorageToken) };
            var identity = new ClaimsIdentity(claims, "jwt");
            var user = new ClaimsPrincipal(identity);
            return new AuthenticationState(user);
        }
    }

    public async Task SetTokenAsync(string token)
    {
        if (string.IsNullOrEmpty(token))
        {
            await _jsRuntime.InvokeAsync