在为 dropbox 制定了 oauth 签名批准系统后,我想使用 API 和httr
'sGET
函数下载我保存在那里的 .RData 文件。
该请求成功并返回数据,但它是原始格式,并且想知道如何在本地驱动器上再次将其转换为 RData 文件。
这是我到目前为止所做的:...
require(httr)
db.file.name <- "test.RData"
db.app <- oauth_app("db",key="xxxxx", secret="xxxxxxx")
db.sig <- sign_oauth1.0(db.app, token="xxxxxxx", token_secret="xxxxxx")
response <- GET(url=paste0("https://api-content.dropbox.com/1/files/dropbox/",db.file.name),config=c(db.sig,add_headers(Accept="x-dropbox-metadata")))
str(response)
List of 8
$ url : chr "https://api-content.dropbox.com/1/files/dropbox/test.RData"
$ handle :List of 2
..$ handle:Formal class 'CURLHandle' [package "RCurl"] with 1 slots
.. .. ..@ ref:<externalptr>
..$ url :List of 8
.. ..$ scheme : chr "https"
.. ..$ hostname: chr "api-content.dropbox.com"
.. ..$ port : NULL
.. ..$ path : chr ""
.. ..$ query : NULL
.. ..$ params : NULL
.. ..$ username: NULL
.. ..$ password: NULL
.. ..- attr(*, "class")= chr "url"
..- attr(*, "class")= chr "handle"
$ status_code: num 200
$ headers :List of 14
..$ server : chr "nginx/1.2.6"
..$ date : chr "Tue, 29 Jan 2013 10:18:58 GMT"
..$ content-type : chr "application/octet-stream"
..$ content-length : chr "1142953"
..$ connection : chr "keep-alive"
..$ access-control-expose-headers: chr "X-Dropbox-Metadata, Accept-Ranges, Content-Range"
..$ accept-ranges : chr "bytes"
..$ x-dropbox-metadata : chr "{\"revision\": 8398, \"rev\": \"20ce0573b0e8\", \"thumb_exists\": false, \"bytes\": 1142953, \"modified\": \"Thu, 24 Jan 2013 2"| __truncated__
..$ etag : chr "8398n"
..$ pragma : chr "public"
..$ cache-control : chr "max-age=0"
..$ access-control-allow-origin : chr "*"
..$ status : chr "200"
..$ statusmessage : chr "OK"
..- attr(*, "class")= chr [1:2] "insensitive" "list"
$ cookies : list()
$ content : raw [1:1142953] 1f 8b 08 00 ...
$ times : Named num [1:6] 0 0.4 0.518 0.879 1.898 ...
..- attr(*, "names")= chr [1:6] "redirect" "namelookup" "connect" "pretransfer" ...
$ config :List of 1
..$ httpheader: Named chr [1:2] "x-dropbox-metadata" "OAuth oauth_consumer_key=\"xxxxxx\", oauth_nonce=\"xxxxxxxx\", oauth_signature=\"xxxxxxxxxxxxxx\", o"| __truncated__
.. ..- attr(*, "names")= chr [1:2] "Accept" "Authorization"
..- attr(*, "class")= chr "config"
- attr(*, "class")= chr "response"
raw.content.of.file <- content(response)
head(raw.content.of.file)
[1] 1f 8b 08 00 00 00
基本上我想以某种方式将raw.content.of.file
对象保存到一个名为 的文件downloaded.RData
中,该文件应该与test.RData
至少能够将位于test.RData
我的全局环境中的对象相同或失败。