在Blazor中使用BlazorWebView混合模式时，如果遇到HTTP内容和不受信任的SSL证书问题，可以按照以下步骤进行解决：

1. 配置BlazorWebView的HttpClientHandler

using Microsoft.AspNetCore.Components.WebView.WebView2;
using System.Security.Cryptography.X509Certificates;
using System.Net.Http;

public class CustomWebView2Factory : IWebView2Factory
{
    public CoreWebView2 CreateWebView2(WebView2Environment environment, string browserExecutableFolder, string userDataFolder)
    {
        // 创建WebView2实例
        var webView2EnvironmentOptions = new WebView2EnvironmentOptions(browserExecutableFolder, userDataFolder);
        var webView2Environment = WebView2Environment.CreateAsync(webView2EnvironmentOptions).GetAwaiter().GetResult();
        var webView2 = new CoreWebView2(webView2Environment);

        // 配置HttpClientHandler以忽略SSL证书错误
        var httpClientHandler = new HttpClientHandler();
        httpClientHandler.ServerCertificateCustomValidationCallback = (sender, cert, chain, sslPolicyErrors) =>
        {
            // 忽略SSL证书错误
            return true;
        };
        webView2.WebMessageReceived += (sender, args) =>
        {
            // 注入WebView2的HttpClientHandler
            if (args.TryGetWebMessageAsString(out var message) && message == "__injectHttpClientHandler")
            {
                webView2.PostWebMessageAsString(httpClientHandler.GetType().AssemblyQualifiedName);
            }
        };

        return webView2;
    }
}

2. 在HostBuilder中使用自定义的WebView2Factory

using Microsoft.AspNetCore.Components.WebView.WebView2;
using Microsoft.Extensions.DependencyInjection;

public static class Program
{
    public static async Task Main(string[] args)
    {
        var builder = WebAssemblyHostBuilder.CreateDefault(args);

        // 注册自定义的WebView2Factory
        builder.ConfigureServices(services =>
        {
            services.AddSingleton();
        });

        builder.RootComponents.Add("app");

        await builder.Build().RunAsync();
    }
}

3. 在Blazor组件中注入HttpClient

@page "/"

@inject HttpClient Http

加载数据

@code {
    private async Task LoadData()
    {
        var response = await Http.GetAsync("http://example.com/api/data");
        // 处理响应数据
    }
}

通过以上步骤配置BlazorWebView的HttpClientHandler，可以忽略SSL证书错误并加载HTTP内容。请注意，忽略SSL证书错误可能会存在安全风险，应根据实际情况谨慎使用。