Asp.Net Core WebApi6解决跨域问题

public void ConfigureServices(IServiceCollection services)
{
    services.AddCors(options =>
    {
        options.AddPolicy("cors",
                          builder =>
                          {
                              builder.WithOrigins("http://example.com",
                                                  "http://www.contoso.com")
                                                  .AllowAnyHeader()
                                                  .AllowAnyMethod();
                          });
    });

    services.AddControllers();
}

            app.UseCors("cors");

https://docs.microsoft.com/zh-cn/aspnet/core/security/cors?view=aspnetcore-5.0#cors-with-named-policy-and-middleware