添加项目文件。

Program.cs

@@ -0,0 +1,152 @@
+using Microsoft.AspNetCore.Authentication.JwtBearer;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.IdentityModel.Tokens;
+using StackExchange.Redis;
+using System.Text;
+using WebAppServer1.ApplicationDbContext;
+using WebAppServer1.Authentication;
+using WebAppServer1.Chat;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+// Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
+builder.Services.AddOpenApi();
+
+//注册SignalR服务
+builder.Services.AddSignalR(options =>
+{
+    options.MaximumReceiveMessageSize = 1024 * 1024 * 10; // 10MB
+})
+.AddMessagePackProtocol(options =>
+{
+    options.SerializerOptions = MessagePack.MessagePackSerializerOptions.Standard
+        .WithSecurity(MessagePack.MessagePackSecurity.UntrustedData);
+}); 
+
+//连接并注册Redis服务
+var redis = ConnectionMultiplexer.Connect("83.229.121.44:6378,password=redis_4GG7KG,defaultDatabase=5");
+builder.Services.AddSingleton<IConnectionMultiplexer>(redis);
+
+// 服务启动时清理 Redis
+//var _redis = scope.ServiceProvider.GetRequiredService<IConnectionMultiplexer>();
+var db = redis.GetDatabase();
+var server = redis.GetServer(redis.GetEndPoints().First());
+
+// 清理全局连接
+await db.KeyDeleteAsync("AllConnections");
+
+// 清理所有群组
+foreach (var _key in server.Keys(pattern: "Group:*"))
+{
+    await db.KeyDeleteAsync(_key);
+}
+
+//连接数据库
+// 添加 DbContext 并使用 PostgreSQL
+builder.Services.AddDbContext<AppDbContext>(options =>
+    options.UseNpgsql(builder.Configuration.GetConnectionString("PostgresConnection")));
+
+//配置跨域
+builder.Services.AddCors(options =>
+{
+    options.AddPolicy("AllowVueApp",
+        policy =>
+        {
+            policy.WithOrigins("http://192.168.1.254:5173", "http://localhost:5173") // 前端地址
+                  .AllowAnyHeader()
+                  .AllowAnyMethod()
+                  .AllowCredentials();
+        });
+});
+
+//配置jwt
+// JWT 配置
+var jwtSettings = builder.Configuration.GetSection("Jwt");
+var keyString = jwtSettings["Key"] ?? throw new InvalidOperationException("JWT Key 未配置");
+var key = Encoding.UTF8.GetBytes(keyString);
+
+builder.Services.AddAuthentication(options =>
+{
+    options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
+    options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
+})
+.AddJwtBearer(options =>
+{
+    options.TokenValidationParameters = new TokenValidationParameters
+    {
+        ValidateIssuer = true,
+        ValidateAudience = true,
+        ValidateLifetime = true,
+        ValidateIssuerSigningKey = true,
+        ValidIssuer = jwtSettings["Issuer"],
+        ValidAudience = jwtSettings["Audience"],
+        IssuerSigningKey = new SymmetricSecurityKey(key)
+    };
+
+    // 允许 SignalR 使用 JWT
+    options.Events = new JwtBearerEvents
+    {
+        OnMessageReceived = context =>
+        {
+            var accessToken = context.Request.Query["access_token"];
+            var path = context.HttpContext.Request.Path;
+            if (!string.IsNullOrEmpty(accessToken) && path.StartsWithSegments("/Chat"))
+            {
+                context.Token = accessToken;
+            }
+            return Task.CompletedTask;
+        }
+    };
+}); 
+builder.Services.AddScoped<TokenService>();
+
+
+var app = builder.Build();
+
+app.UseRouting();
+
+//启用跨域配置
+app.UseCors("AllowVueApp");
+
+//启用jwt
+app.UseAuthentication();
+app.UseAuthorization();
+
+
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment())
+{
+    app.MapOpenApi();
+}
+
+//app.UseHttpsRedirection();
+
+var summaries = new[]
+{
+    "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
+};
+
+//映射端点
+app.MapHub<Chat>("/Chat");
+
+app.MapGet("/weatherforecast", () =>
+{
+    var forecast = Enumerable.Range(1, 5).Select(index =>
+        new WeatherForecast
+        (
+            DateOnly.FromDateTime(DateTime.Now.AddDays(index)),
+            Random.Shared.Next(-20, 55),
+            summaries[Random.Shared.Next(summaries.Length)]
+        ))
+        .ToArray();
+    return forecast;
+})
+.WithName("GetWeatherForecast");
+
+app.Run();
+
+internal record WeatherForecast(DateOnly Date, int TemperatureC, string? Summary)
+{
+    public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
+}