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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Hosting;
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using Microsoft.Extensions.Logging;
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using Microsoft.Extensions.Options;
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namespace CorsServer.WebApi31
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{
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public class StartupConfig
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{
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public StartupConfig(IConfiguration configuration, IHostEnvironment hostingEnvironment, IWebHostEnvironment webHostEnvironment)
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{
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Configuration = configuration;
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}
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public IConfiguration Configuration { get; }
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public void ConfigureServices(IServiceCollection services)
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{
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//Config
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services.Configure<CorsOption>(Configuration.GetSection("CORS"));
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//Cors配置文件选项
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AddCors_Config(services);
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services.AddControllers();
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}
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public void Configure(IApplicationBuilder app, IWebHostEnvironment env, IOptionsSnapshot<CorsOption> corsOtionsSnapshot)
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{
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if (env.IsDevelopment())
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{
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app.UseDeveloperExceptionPage();
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}
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app.UseRouting();
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app.UseCors(CorsPolicyNameConst.DefaultPolicyName);
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app.UseAuthorization();
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app.UseEndpoints(endpoints =>
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{
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endpoints.MapControllers();
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});
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}
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#region 注册不同的Cors策略
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private IServiceCollection AddCors_Config(IServiceCollection services)
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{
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services.AddCors(setup =>
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{
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var corsOption = services.BuildServiceProvider().GetRequiredService<IOptionsSnapshot<CorsOption>>().Value;
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setup.AddPolicy(CorsPolicyNameConst.DefaultPolicyName, builder =>
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{
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if (corsOption.Origins == null)
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{
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builder.SetIsOriginAllowed(_ => true);
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}
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else if (corsOption.Origins.Count == 0)
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{
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builder.SetIsOriginAllowed(_ => true);
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}
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else if (corsOption.Origins.Contains("*"))
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{
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builder.SetIsOriginAllowed(_ => true);
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}
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else
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{
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builder.WithOrigins(corsOption.Origins.ToArray());
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builder.SetIsOriginAllowedToAllowWildcardSubdomains();
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}
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if (corsOption.Methods == null || corsOption.Methods.Count == 0)
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{
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builder.AllowAnyMethod();
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}
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else
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{
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builder.WithMethods(corsOption.Methods.ToArray());
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}
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if (corsOption.Headers == null || corsOption.Headers.Count == 0)
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{
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builder.AllowAnyHeader();
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}
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else
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{
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builder.WithMethods(corsOption.Headers.ToArray());
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}
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if (corsOption.ExposedHeaders != null && corsOption.ExposedHeaders.Count > 0)
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{
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builder.WithExposedHeaders(corsOption.ExposedHeaders.ToArray());
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}
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if (corsOption.AllowCredentials)
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{
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builder.AllowCredentials();
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}
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else
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{
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builder.DisallowCredentials();
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}
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if (corsOption.PreflightMaxAge.TotalSeconds > 0)
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{
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builder.SetPreflightMaxAge(corsOption.PreflightMaxAge);
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}
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});
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});
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return services;
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}
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#endregion
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}
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}
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@ -0,0 +1,80 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Hosting;
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using Microsoft.Extensions.Logging;
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using Microsoft.Extensions.Options;
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namespace CorsServer.WebApi31
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{
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public class StartupDefaultPolicy
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{
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public StartupDefaultPolicy(IConfiguration configuration, IHostEnvironment hostingEnvironment, IWebHostEnvironment webHostEnvironment)
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{
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Configuration = configuration;
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}
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public IConfiguration Configuration { get; }
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public void ConfigureServices(IServiceCollection services)
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{
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//config
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services.Configure<CorsOption>(Configuration.GetSection("CORS"));
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//Cors
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AddDefaultCors(services);
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services.AddControllers();
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}
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public void Configure(IApplicationBuilder app, IWebHostEnvironment env, IOptionsSnapshot<CorsOption> corsOtionsSnapshot)
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{
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if (env.IsDevelopment())
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{
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app.UseDeveloperExceptionPage();
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}
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//根路径：全局访问前辍 http://www.custom.com/PathBase/
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//app.UsePathBase("/api/");
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app.UseRouting();
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app.UseCors();
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app.UseAuthorization();
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app.UseEndpoints(endpoints =>
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{
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endpoints.MapControllers();
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});
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}
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/// <summary>
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/// 设置默认策略Cors
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/// </summary>
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private IServiceCollection AddDefaultCors(IServiceCollection services)
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{
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services.AddCors(setupCors =>
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{
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setupCors.AddDefaultPolicy(build =>
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{
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build
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.AllowAnyOrigin()
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.AllowAnyMethod()
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.AllowAnyHeader()
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.SetPreflightMaxAge(TimeSpan.FromMinutes(10))
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;
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});
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});
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return services;
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}
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}
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}
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