使用httr R包发送POST请求 [英] Send a POST request using httr R package
本文介绍了使用httr R包发送POST请求的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
当通过POST请求发送服务器数据时，我不知道如何模仿浏览器的功能.这是相关的URL，下面有解释.
I can't figure out how to imitate what the browser does, when sending the server data via a POST request. Here are the relevant URLs with explanation below.
(1) http://kenpom.com/
(2) http://kenpom.com/register.php?frompage=1
<form id="login" method="POST" action="handlers/login_handler.php">
<label>E-mail </label><input type="text" name="email" />
<label>Password </label><input type="password" name="password" />
<input type="submit" name="submit" value="Login!" />
(3) http://kenpom.com/team.php?team=Rice
(1)主页(未登录时选择团队页面，重定向->(2))
(1) home page (select team page when NOT logged in, re-direct -> (2) )
(2)登录页面(成功登录后将重定向到特定于团队的页面)
(2) login page (re-direct to team specific page upon successful login)
(3)特定于团队的页面:例如米饭
(3) team specific page: e.g. Rice
url <- ("http://kenpom.com/team.php?team=Rice")
login <- list(
email = "login",
password = "password"
)
teampage <- POST(url, body = login)
Response [http://kenpom.com/register.php?frompage=1]
Date: 2015-03-07 23:04
Status: 200
Content-Type: text/html
Size: 7.45 kB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<HTML>
<HEAD>
<LINK REL=stylesheet TYPE="text/css" HREF="css/rate.css?1414365416">
<TITLE>kenpom.com subscription</TITLE>
最终希望使用rvest软件包抓取一些信息，但最终结果为空，因为它试图抓取:
Ultimately want to scrape some info using the rvest package but end up with empty results as it attempts to scrape: http://kenpom.com/register.php?frompage=1
推荐答案
尝试
library(httr)
login <- list(
email = "login",
password = "password",
submit = "Login!"
)
res <- POST("http://kenpom.com/handlers/login_handler.php", body = login, encode = "form", verbose())
team <- GET("http://kenpom.com/team.php?team=Rice", verbose())
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