Core Api跨域问题解决

在Startup.cs文件中添加以下两处代码

public void ConfigureServices(IServiceCollection services)
        {
            services.AddCors();
        }

  public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            app.UseCors(builder => builder
                        .AllowAnyOrigin()
                        .AllowAnyMethod()
                        .AllowAnyHeader()
                        .AllowCredentials());
        }