AGSSbackend/AGSS/Program.cs

using System.Reflection;
using AGSS.Models;
using AGSS.Models.Template;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.EntityFrameworkCore;
using Microsoft.IdentityModel.Tokens;
using Microsoft.OpenApi.Models;


var builder = WebApplication.CreateBuilder(args);




var domain = builder.Configuration["Auth0:Domain"];
var audience =builder.Configuration["Auth0:Audience"];

builder.Services.AddCors(options =>
{
    options.AddPolicy("AllowAll", builder =>
    {
        builder.AllowAnyOrigin() // 允许所有来源
            .AllowAnyHeader()
            .AllowAnyMethod();
    });
});


//数据库配置(PGSQL)
builder.Services.AddDbContext<DBContext>(opt =>
    opt.UseNpgsql(builder.Configuration.GetConnectionString("DBContext")));

//鉴权配置
builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
        .AddJwtBearer(options =>
        {
            options.Authority = domain;
            options.Audience = audience;
            options.TokenValidationParameters = new TokenValidationParameters
            {
                ValidateIssuer = true,
                ValidateAudience = true,
                ValidateLifetime = true,
                ValidIssuer = domain,
                ValidAudience = audience
            };
            options.Events = new JwtBearerEvents
            {
                OnChallenge = context =>
                {
                    context.HandleResponse();
                    context.Response.StatusCode = 200;
                    context.Response.ContentType = "application/json";
                    return context.Response.WriteAsJsonAsync(new ReturnTemplate(401,"你提供了一个错误的Token，所以我们无法验证你的身份，唔......",null));
                }

            };
        });
builder.Services.AddAuthorization();



builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("v1",new OpenApiInfo{Title = "ZeroNode后端文档", Version = "1.0.0",Description = "使用了Dotnet9.0，数据库采用PGSql，作者：罗澜，7000"});
    var xmlFil = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
    var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFil);
    c.IncludeXmlComments(xmlPath);
});

var app = builder.Build();

app.UseCors("AllowAll");

// 配置Swagger
app.UseSwagger();
app.UseSwaggerUI();

app.UseHttpsRedirection();

app.UseAuthentication();

app.UseAuthorization();

//自定义中间件 把404变成200
app.Use(async (context, next) =>
{
    await next(); // 先执行后续中间件
    
    // 如果响应是 404 且未修改过
    if (context.Response.StatusCode == 404 && !context.Response.HasStarted)
    {
        context.Response.StatusCode = 200; // 改为 200
        context.Response.ContentType = "application/json";
        
        // 自定义响应内容
        await context.Response.WriteAsJsonAsync(new ReturnTemplate(404,"未能找到资源吖！",null!));
    }
});

//控制器路由
app.MapControllers();

app.Run();