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c# eventbus的最佳實(shí)踐案例

c#
小樊
95
2024-07-18 04:44:50
欄目: 編程語言

EventBus 是一種用于在應(yīng)用程序組件之間進(jìn)行解耦通信的設(shè)計(jì)模式。在 C# 中,可以使用第三方庫如 Prism、MediatR 或 NServiceBus 來實(shí)現(xiàn) EventBus。以下是一個(gè)使用 MediatR 實(shí)現(xiàn) EventBus 的最佳實(shí)踐案例:

  1. 創(chuàng)建事件類:
public class UserRegisteredEvent : INotification
{
    public string Username { get; set; }
}
  1. 創(chuàng)建事件處理器類:
public class UserRegisteredHandler : INotificationHandler<UserRegisteredEvent>
{
    public Task Handle(UserRegisteredEvent notification, CancellationToken cancellationToken)
    {
        Console.WriteLine($"User {notification.Username} has been registered.");
        return Task.CompletedTask;
    }
}
  1. 注冊事件處理器:
public void ConfigureServices(IServiceCollection services)
{
    services.AddMediatR(typeof(Startup));
    services.AddTransient<INotificationHandler<UserRegisteredEvent>, UserRegisteredHandler>();
}
  1. 觸發(fā)事件:
public class UserService
{
    private readonly IMediator _mediator;

    public UserService(IMediator mediator)
    {
        _mediator = mediator;
    }

    public async Task RegisterUser(string username)
    {
        // Register user logic

        await _mediator.Publish(new UserRegisteredEvent { Username = username });
    }
}
  1. 使用事件處理器:
public class UserController : Controller
{
    private readonly UserService _userService;

    public UserController(UserService userService)
    {
        _userService = userService;
    }

    [HttpPost]
    public async Task<IActionResult> RegisterUser(string username)
    {
        await _userService.RegisterUser(username);
        return Ok();
    }
}

通過以上步驟,我們成功實(shí)現(xiàn)了 EventBus 的最佳實(shí)踐案例,使得不同組件之間的通信更加靈活和解耦。

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