在R中使用OAuth2访问Reddit API,需要进行令牌请求和更新的过程。下面是详细步骤:
install.packages("httr")
library(httr)
client_id <- "YOUR_CLIENT_ID"
client_secret <- "YOUR_CLIENT_SECRET"
redirect_uri <- "http://localhost/"
auth_url <- "https://www.reddit.com/api/v1/authorize"
scope <- "identity"
auth_url <- modify_url(auth_url,
query = list(
client_id = client_id,
response_type = "code",
state = "random_string",
redirect_uri = redirect_uri,
scope = scope
))
get_access_token <- function(client_id, client_secret, redirect_uri, code) {
token_url <- "https://www.reddit.com/api/v1/access_token"
response <- POST(token_url,
add_headers(
Authorization = paste0("Basic ",
base64_encode(paste0(client_id, ":", client_secret)))
),
body = list(
grant_type = "authorization_code",
code = code,
redirect_uri = redirect_uri
),
encode = "form",
verbose())
content(response)$access_token
}
code <- readline("Enter the authorization code: ")
access_token <- get_access_token(client_id, client_secret, redirect_uri, code)
现在你可以使用获取的访问令牌来访问Reddit API,并执行各种操作了。请注意,访问令牌有一定的有效期,过期后需要更新。以下是一些常见的Reddit API操作:
user_info <- GET("https://oauth.reddit.com/api/v1/me",
add_headers(Authorization = paste0("Bearer ", access_token)))
content(user_info)
subreddit <- "programming"
hot_posts <- GET(paste0("https://oauth.reddit.com/r/", subreddit, "/hot"),
add_headers(Authorization = paste0("Bearer ", access_token)))
content(hot_posts)
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