dotnet -- 4. set 跨域 Cors

.netcore cors

配置跨域是后端职责所在

核心代码如下:

// 从 appsetting 获取跨域列表
var hostList = configuration.GetSection("Cors").GetChildren().Select(w => w.Value).ToArray();
services.AddCors(setupAction =>
{
    // 配置跨域规则
    setupAction.AddPolicy("cors", setupAction =>
    {
        //setupAction.AllowAnyOrigin();
        setupAction.AllowAnyHeader();
        setupAction.AllowAnyMethod();
        setupAction.AllowCredentials().WithOrigins(hostList);
    });
});

// 使用跨域中间件
app.UseCors("cors");

辅助代码

appsetting.json

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    }
  },
  "Cors": [
    "http://localhost:5000",
    "http://192.168.52.21:5000"
  ]
}

configuration, services, app

public class Program
{
    public static void Main(string[] args)
    {
        var builder = WebApplication.CreateBuilder(args);

        var services = builder.Services;
        var configuration = builder.Configuration;

        var app = builder.Build();
        app.Run();
    }
}