ASP.NET Core 开源论坛项目 NETCoreBBS

Core 轻量化开源论坛项目， Core Light forum NETCoreBBS

采用 Core + EF Core Sqlite + Bootstrap 开发。

GitHub:/linezero/NETCoreBBS

开发

git clone /linezero/NETCoreBBS.git

使用 Visual Studio 打开NetCoreBBS.sln

点击调试->开始调试即可运行起来,或者直接点击工具栏上的NetCoreBBS即可。

注意：默认为80端口，可能会和本地端口冲突，可以到Program.cs 中更改.UseUrls("http://*:80"),然后更改启动URL既可。

功能

节点功能

主题发布

主题回复

主题筛选

用户登录注册

主题置顶

后台管理

个人中心

技术点大合集

架构Clean Architecture

1. Areas

重点代码：

app.UseMvc(routes =>{routes.MapRoute(name: "areaRoute",template: "{area:exists}/{controller}/{action}",defaults: new { action = "Index" });routes.MapRoute(name: "default",template: "{controller=Home}/{action=Index}/{id?}");});

增加一个areaRoute ，然后添加对应的Areas 文件夹，然后Areas里的控制器里加上 [Area("Admin")] 。

2. ViewComponents

在项目里的ViewComponents 文件夹，注意对应视图在 Views\Shared\Components 文件夹里。

3. Middleware

RequestIPMiddleware 记录ip及相关信息的中间件

public class RequestIPMiddleware{

private readonly RequestDelegate _next;

private readonly ILogger _logger;

public RequestIPMiddleware(RequestDelegate next){_next = next;_logger = LogManager.GetCurrentClassLogger();}

public async Task Invoke(HttpContext httpContext){

var url = httpContext.Request.Path.ToString();

if (!(url.Contains("/css") || url.Contains("/js") || url.Contains("/images") || url.Contains("/lib"))){_logger.Info($"Url:{url} IP:{httpContext.Connection.RemoteIpAddress.ToString()} 时间：{DateTime.Now}");}

await _next(httpContext);}}

public static class RequestIPMiddlewareExtensions{

public static IApplicationBuilder UseRequestIPMiddleware(this IApplicationBuilder builder){

return builder.UseMiddleware<RequestIPMiddleware>();}}

4. Identity

集成Identity ，扩展User表，自定义用户表。

权限策略

services.AddAuthorization(options =>{options.AddPolicy("Admin",authBuilder =>{authBuilder.RequireClaim("Admin", "Allowed");});});

注册登录密码复杂度

services.AddIdentity<User, IdentityRole>(options =>{options.Password = new PasswordOptions() {RequireNonAlphanumeric = false,RequireUppercase=false};}).AddEntityFrameworkStores<DataContext>().AddDefaultTokenProviders();

5. EF Core

EF Core 采用Sqlite 数据库。

读取配置文件

services.AddDbContext<DataContext>(options => options.UseSqlite(Configuration.GetConnectionString("DefaultConnection")));

使用代码初始化数据库

private void InitializeNetCoreBBSDatabase(IServiceProvider serviceProvider){

using (var serviceScope = serviceProvider.GetRequiredService<IServiceScopeFactory>().CreateScope()){

var db = serviceScope.ServiceProvider.GetService<DataContext>();db.Database.Migrate();

if (db.TopicNodes.Count() == 0){db.TopicNodes.AddRange(GetTopicNodes());db.SaveChanges();}}}

项目分层 DataContext 在 Infrastructure，使用dotnet ef 命令注意事项

dotnet ef migrations add InitMigration --startup-project ../NetCoreBBS/NetCoreBBS.csproj

更新指定字段，不用先查询实体。

public IActionResult EditSave(Topic topic){_context.Attach(topic);_context.Entry(topic).Property(r => r.Title).IsModified = true;_context.Entry(topic).Property(r => r.Content).IsModified = true;_context.SaveChanges();

return RedirectToAction("Index");}

6. Configuration

读取链接字符串Configuration.GetConnectionString("DefaultConnection")

7. Partial Views

_LoginPartial.cshtml 头部登录部分分布视图

_PagerPartial.cshtml 分页分布视图

var pageindex = Convert.ToInt32(ViewBag.PageIndex); var pagecount = Convert.ToInt32(ViewBag.PageCount);pagecount = pagecount == 0 ? 1 : pagecount;pageindex = pageindex > pagecount ? pagecount : pageindex;

var path = Context.Request.Path.Value;

var query = string.Empty;

var querys = Context.Request.Query;

foreach (var item in querys){

if (!item.Key.Equals("page")){query += $"{item.Key}={item.Value}&";}}query = query == string.Empty ? "?" : "?" + query;path += query;

var pagestart = pageindex - 2 > 0 ? pageindex - 2 : 1;

<li class="disabled"><a href="#">…</a></li>}@if (pagecount > 1){ <li @(pageindex == pagecount ? "class=active" : "")><a rel="end" href="@(path)page=@pagecount">@pagecount</a></li>} <li class="next next_page @(pageindex==pagecount?"disabled":"")"><a rel="next" href="@(pageindex==pagecount?"#":$"{path}page={pageindex + 1}")">下一页 →</a></li></ul>

写的不是很好，可以优化成TagHelper。

8. Injecting Services Into Views

@inject SignInManager<User> SignInManager

@inject 关键字

9. Dependency Injection and Controllers

public IActionResult Index([FromServices]IUserServices user)

FromServices 在指定Action注入，也可以使用构造函数注入。

private ITopicRepository _topic;

private IRepository<TopicNode> _node;

public UserManager<User> UserManager { get; }

public HomeController(ITopicRepository topic, IRepository<TopicNode> node, UserManager<User> userManager){_topic = topic;_node = node;UserManager = userManager;}