尝试在 Ubuntu 14.04 LTS 操作系统类型（64 位）上的 Rstudio 中安装 xlsx 包，但在安装时出现错误。请指导我如何解决这些错误，因为我正在尝试创建一个脚本，我可以在其中读取 Excel 文件通勤列数据的一些统计信息
install.packages("xlsx")
Installing package into ‘/home/supratech/R/x86_64-pc-linux-gnu-
library/3.3’
(as ‘lib’ is unspecified)
also installing the dependencies ‘rJava’, ‘xlsxjars’
trying URL 'https://cran.rstudio.com/src/contrib/rJava_0.9-8.tar.gz'
Content type 'unknown' length 656615 bytes (641 KB)
==================================================
downloaded 641 KB
trying URL
'https://cran.rstudio.com/src/contrib/xlsxjars_0.6.1.tar.gz'
Content type 'unknown' length 9477071 bytes (9.0 MB)
==================================================
downloaded 9.0 MB
trying URL 'https://cran.rstudio.com/src/contrib/xlsx_0.5.7.tar.gz'
Content type 'unknown' length 312839 bytes (305 KB)
==================================================
downloaded 305 KB
* installing *source* package ‘rJava’ ...
** package ‘rJava’ successfully unpacked and MD5 sums checked
checking for gcc... gcc -std=gnu99
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc -std=gnu99 accepts -g... yes
checking for gcc -std=gnu99 option to accept ISO C89... none needed
checking how to run the C preprocessor... gcc -std=gnu99 -E
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for ANSI C header files... yes
checking for sys/wait.h that is POSIX.1 compatible... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for string.h... (cached) yes
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking for unistd.h... (cached) yes
checking for an ANSI C-conforming const... yes
checking whether time.h and sys/time.h may both be included... yes
configure: checking whether gcc -std=gnu99 supports static inline...
yes
checking whether setjmp.h is POSIX.1 compatible... yes
checking whether sigsetjmp is declared... yes
checking whether siglongjmp is declared... yes
checking Java support in R... present:
interpreter : '/usr/lib/jvm/default-java/jre/bin/java'
archiver : '/usr/bin/jar'
compiler : '/usr/bin/javac'
header prep.: '/usr/bin/javah'
cpp flags : ''
java libs : ''
configure: error: One or more Java configuration variables are not
set.
Make sure R is configured with full Java support (including JDK). Run
R CMD javareconf
as root to add Java support to R.
If you don't have root privileges, run
R CMD javareconf -e
to set all Java-related variables and then install rJava.
ERROR: configuration failed for package ‘rJava’
* removing ‘/home/supratech/R/x86_64-pc-linux-gnu-library/3.3/rJava’
Warning in install.packages :
installation of package ‘rJava’ had non-zero exit status
ERROR: dependency ‘rJava’ is not available for package ‘xlsxjars’
* removing ‘/home/supratech/R/x86_64-pc-linux-gnu-
library/3.3/xlsxjars’
Warning in install.packages :
installation of package ‘xlsxjars’ had non-zero exit status
ERROR: dependencies ‘rJava’, ‘xlsxjars’ are not available for package
‘xlsx’
* removing ‘/home/supratech/R/x86_64-pc-linux-gnu-library/3.3/xlsx’
Warning in install.packages :
installation of package ‘xlsx’ had non-zero exit status
The downloaded source packages are in
‘/tmp/RtmpH45TY8/downloaded_packages’