问题
I'm a beginner having problem with Angular 5 Routing. I'm following this tutorial http://devarea.com/angular-5-routing-practical-guide/ Also tried some other tutorials and the result is the same. I'm on Windows 7 64 bit.
When I click the link, say, "books", it goes to the correct page showing "localhost:4200/books", but if I enter exactly that or refresh the page, it shows "Cannot GET /books".
Is this a bug? I made sure to read the tutorials over and over again.
UPDATE: I was using Firefox 52.5.3 ESR, then I tried accessing the page with Opera and it works, which is weird.
来源：https://stackoverflow.com/questions/49684814/angular-5-routing-can-go-to-link-by-click-but-not-by-link