public UrlMiddleware(RequestDelegate next,
IProductAppService productAppService,
ITransientTestAppService transientTestAppService)
{
//构造中的productAppService服务是由IApplicationBuilder.ApplicationServices根容器创建的
_next = next;
}
public ProductController(IProductAppService productAppService1,
IProductAppService productAppService2,
IOrderAppService orderAppService1,
IOrderAppService orderAppService2,
ITransientTestAppService transientTestAppService1,
ITransientTestAppService transientTestAppService2,
IHostApplicationLifetime lifetime)
{
_lifetime = lifetime;
}
public async Task InvokeAsync(HttpContext context, IProductAppService productAppService, ITransientTestAppService transientTestAppService)
{
//invoke中的productAppService其实是context.RequestServices子容器创建的。
//这里的context.RequestServices子容器也是由IApplicationBuilder.ApplicationServices根容器创建来的。
var productService = context.RequestServices.GetRequiredService <IProductAppService>();//使用解析的方式和上面方法中注入进来是一样的作用，切记是使用子容器RequestServices解析
Console.WriteLine($"请求第{times++}次进入UrlMiddleware中间件。hash:{this.GetHashCode()}");
await _next(context);
}
