@RequestMapping(value = "/{username}/navigation")

Question

 @RequestMapping(value = "/{username}/navigation")

    public String usersPage(@PathVariable String username,HttpSession session) {

        String s=username;

        return "navigation/navigation";

    }

Answer 1

没有问题，是Idea的问题，我重启下就没问题了，Idea太坑了，以后我真要小心 点

Answer 2

也有可能是缓存吧