Question

当遇到控制器异常错误时，出现了“提供了无效的请求URI。请求URI必须是绝对URI或必须设置BaseAddress。” **** strong text

blazor服务器端

控制器调用未在Razor组件中执行查看代码

  async Task UploadFile()
  {
    try
    {
      LoginRepository loginRepository = new LoginRepository(new LaborgDbContext());
      DocumentService documentService = new DocumentService();
      var form = new MultipartFormDataContent();
      var content = new StreamContent(file.Data);
      content.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("form-data")
      {
        Name = "files",
        FileName = file.Name
      };
      form.Add(content);
      var response = await HttpClient.PostAsync("/api/Document/Upload", form);    
    }
    catch (Exception ex)
    {
      throw ex;
    }

  }

控制器代码

[Route("api/[controller]/[action]")]
  [ApiController]
  public class UploadController : ControllerBase
  {
    private readonly IWebHostEnvironment _Env;

    public UploadController(IWebHostEnvironment env)
    {
      _Env = env;
    }
    [HttpPost()]
    public async Task<IActionResult> Post(List<IFormFile> files)
    {
      long size = files.Sum(f => f.Length);
      foreach (var formFile in files)
      {
        // full path to file in temp location
        var filePath = Path.GetTempFileName();
        if (formFile.Length > 0)
        {
          using (var stream = new FileStream(filePath, FileMode.Create))
          {
           await formFile.CopyToAsync(stream);
          }
        }

        System.IO.File.Copy(filePath, Path.Combine(_Env.ContentRootPath, "Uploaded", formFile.FileName)); 
      }

      return Ok(new { count = files.Count, size });
    }

启动

  public class Startup

{ 公共启动（IConfiguration配置） { 配置=配置； }

public IConfiguration Configuration { get; }

// 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.AddAuthorizationCore();
  services.AddDbContext<ApplicationDbContext>(options =>
      options.UseSqlServer(
          Configuration.GetConnectionString("DefaultConnection")));
  services.AddDefaultIdentity<IdentityUser>()
      .AddEntityFrameworkStores<ApplicationDbContext>();
  services.AddRazorPages();
  services.AddServerSideBlazor();
  services.AddScoped<AuthenticationStateProvider, RevalidatingIdentityAuthenticationStateProvider<IdentityUser>>();
  services.AddSingleton<WeatherForecastService>();
  services.AddSingleton<TaskSchedulerService>();
  services.AddSingleton<TimeOffSchedulerService>();
  services.AddSingleton<DocumentService>();
  services.AddFileReaderService(options => options.InitializeOnFirstCall = true);
  services.AddSingleton<HttpClient>();

  services
.AddBlazorise(options =>
{
  options.ChangeTextOnKeyPress = true; // optional
})
.AddBootstrapProviders()
.AddFontAwesomeIcons();
}


public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
  if (env.IsDevelopment())
  {
    app.UseDeveloperExceptionPage();
    app.UseDatabaseErrorPage();
  }
  else
  {
    app.UseExceptionHandler("/Error");

    app.UseHsts();
  }

  app.UseHttpsRedirection();
  app.UseStaticFiles();

  app.UseRouting();
  app.UseEmbeddedBlazorContent(typeof(MatBlazor.BaseMatComponent).Assembly);
  app.UseEmbeddedBlazorContent(typeof(BlazorDateRangePicker.DateRangePicker).Assembly);
  app.UseAuthentication();
  app.UseAuthorization();

  app.UseEndpoints(endpoints =>
  {
    endpoints.MapControllers();
    endpoints.MapBlazorHub();
    endpoints.MapFallbackToPage("/_Host");
  });
}

} }

Answer 1

startup.cs页面，并将以下代码添加到app.UseEndpoints方法的末尾（在endpoints.MapFallbackToPage（“ / _ Host”）;行下），以允许对控制器的http请求被正确路由。 / p>

添加以下行 endpoints.MapControllerRoute（“默认”，“ {controller = Home} / {action = Index} / {id？}”）;

app.UseEndpoints(endpoints =>
      {
        endpoints.MapBlazorHub();
        endpoints.MapFallbackToPage("/_Host");
        endpoints.MapControllerRoute("default", "{controller=Home}/{action=Index}/{id?}");
      });

Answer 2

https://github.com/dotnet/aspnetcore/issues/16840

位置包含%20时Blazor抛出

来自：@ msftbot

我们已将此问题移至Backlog里程碑。这意味着在即将发布的版本中将不再使用它。我们将在当前版本之后重新评估积压，并在那时考虑此项。

提供了无效的请求URI。请求URI必须是绝对URI或必须设置BaseAddress。在Blazor

2 个答案: