使用rvest通过登录页面刮取网站

Question

这是我的代码：

library(rvest)

#login
url <- "https://secure.usnews.com/member/login?ref=https%3A%2F%2Fpremium.usnews.com%2Fbest-graduate-schools%2Ftop-medical-schools%2Fresearch-rankings"
session <- html_session(url)

form <- html_form(read_html(url))[[1]]

filled_form <- set_values(form,
                          username = "notmyrealemail",
                          password = "notmyrealpassword")

submit_form(session, filled_form)

以下是submit_form之后输出的内容：

<session> https://premium.usnews.com/best-graduate-schools/top-medical-schools/research-rankings
  Status: 200
  Type:   text/html; charset=utf-8
  Size:   286846

我认为这意味着它有效吗？如果是这样，我在登录后出现的页面上如何read_html？

Answer 1

Nvm，使用url <- jump_to(session, "https://premium.usnews.com/best-graduate-schools/top-medical-schools/research-rankings")

让它工作