1.定义Middleware,在ctor中指定Action和Type类型的参数
2.在extension中调用app.UseMiddleware,并传递参数
3.Startup.cs中注册中间件
4.Main函数报错
高人隐士帮帮忙,给点建议
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Middleware的构造函数不能传递null,所以我把Action和Type的实现都拿到extension中,在运行,ok了
InvokeAsync(HttpContext context,Action<WeChatMessager> onMessageReceived, IMessageQueue messageQueue)
app.UseMiddleware<LazyWeChatMiddleware>();
中间件类似aop,当请求过来作为统一处理的组件,跟httpmodule差不多,传递参数没理解,一般来说,传过来一个httpcontext,每个中间件都能处理这个httpcontext里面的东西