在node.js中，中间件是否等于将所有的同名方法先重在，如果能够处理就处理，不能处理就next()
认证0级讲师
Middleware will be executed on every request. The middleware itself can judge and perform special processing on only some requests.
Whether next is called depends on whether the middleware wants this request to stop and no longer execute other middleware.
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Middleware will be executed on every request. The middleware itself can judge and perform special processing on only some requests.
Whether next is called depends on whether the middleware wants this request to stop and no longer execute other middleware.