RJSONIO在Linux環境下的錯誤了以https

Question

嗨，我是在Windows中使用RJSONIO，當我執行以下正常工作：

library(RJSONIO)  
fromJSON("https://issues.apache.org/jira/rest/api/2/project") 

它返回一個JSON但是當我做同樣的事情在我的Linux出現以下錯誤：

Error in file(con, "r") : cannot open the connection 

在谷歌做一些搜索後，我發現我需要提「文件=」 fromJSON（文件=「https://issues.apache.org/jira/rest/api/ 2/project「）

所以現在我得到的錯誤：

unable to find an inherited method for function âfromJSONâ for signature â"missing", "missing"â 

任何建議？

Answer 1

這在?url：http://中有解釋。URLs的工作方式與所有文件完全相同， 但是https://網址沒有。

Note that the https:// URL scheme is not supported except on Windows. There it is only supported if --internet2 or setInternet2(TRUE) was used (to make use of Internet Explorer internals), and then only if the certificate is considered to be valid. With that option only, the http://user:pass@site notation for sites requiring authentication is also accepted.

可以明確地使用RCurl：

fromJSON(RCurl::getURL("https://issues.apache.org/jira/rest/api/2/project"))