.net core 跨域访问

var builder = WebApplication.CreateBuilder(args);
builder.Services.AddCors(options => {       // 这定义了一个名为 ``default`` 的 CORS 策略       options.AddPolicy("default", policy =>        {              policy.AllowAnyOrigin()                  .AllowAnyHeader()                  .AllowAnyMethod();          }); });
// Add services to the container.
builder.Services.AddControllers(); // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle builder.Services.AddEndpointsApiExplorer(); builder.Services.AddSwaggerGen();
var app = builder.Build();
// Configure the HTTP request pipeline. if (app.Environment.IsDevelopment()) {     app.UseSwagger();     app.UseSwaggerUI(); }
app.UseHttpsRedirection();
app.UseAuthorization();
app.MapControllers();
app.UseCors("default");
app.Run();