我安装了R Studio 1.2.1335版和R版本3.5.2版
我正在尝试安装XLconnect软件包，但我一直在获取
错误：there is no package called 'XLConnect'
install.packages("XLConnect")
WARNING: Rtools is required to build R packages but is not currently installed. Please download and install the appropriate version of Rtools before proceeding:
https://cran.rstudio.com/bin/windows/Rtools/ also installing the dependency ‘XLConnectJars’
trying URL 'https://cran.rstudio.com/bin/windows/contrib/3.5/XLConnectJars_0.2-15.zip' Content type 'application/zip' length 14789155 bytes (14.1 MB) downloaded 14.1 MB
trying URL 'https://cran.rstudio.com/bin/windows/contrib/3.5/XLConnect_0.2-15.zip' Content type 'application/zip' length 9832001 bytes (9.4 MB) downloaded 9.4 MB
package ‘XLConnectJars’ successfully unpacked and MD5 sums checked Warning in install.packages : cannot remove prior installation of package ‘XLConnectJars’ package ‘XLConnect’ successfully unpacked and MD5 sums checked Warning in install.packages : cannot remove prior installation of package ‘XLConnect’
The downloaded binary packages are in C:\Users\hamaor\AppData\Local\Temp\RtmpWAe4XU\downloaded_packages
library("XLConnect")
Error in library("XLConnect") : there is no package called ‘XLConnect’
.libPaths()
[1] "F:/Dropbox/tools/R-3.5.2/library"
当我查看该目录时，看到XLConnect在那。 （我还尝试按照其他帖子的建议安装Java 64位。）
感谢您的帮助