我试图安装xlsx包，不幸的是，Java有一个问题，我无法解决。
请在下面找到尝试安装 xlsx 包时产生的输出。
R version 3.1.1 (2014-07-10) -- "Sock it to Me"
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> install.packages("xlsx")
Installing package into ‘/home/tamaspavlicek/R/x86_64-redhat-linux-gnu-library/3.1’
(as ‘lib’ is unspecified)
also installing the dependencies ‘rJava’, ‘xlsxjars’
trying URL 'contrib/rJava_0.9-6.tar.gz'
Content type 'application/x-gzip' length 567515 bytes (554 Kb)
opened URL
==================================================
downloaded 554 Kb
trying URL 'contrib/xlsxjars_0.6.1.tar.gz'
Content type 'application/x-gzip' length 9477071 bytes (9.0 Mb)
opened URL
==================================================
downloaded 9.0 Mb
trying URL 'contrib/xlsx_0.5.7.tar.gz'
Content type 'application/x-gzip' length 312839 bytes (305 Kb)
opened URL
==================================================
downloaded 305 Kb
* installing *source* package ‘rJava’ ...
** package ‘rJava’ successfully unpacked and MD5 sums checked
checking for gcc... gcc -m64 -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 -m64 -std=gnu99 accepts -g... yes
checking for gcc -m64 -std=gnu99 option to accept ISO C89... none needed
checking how to run the C preprocessor... gcc -m64 -std=gnu99 -E
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/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 -m64 -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 : '/bin/java'
archiver : '/bin/jar'
compiler : '/bin/javac'
header prep.: '/bin/javah'
cpp flags : '-I/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.71-2.5.3.0.fc20.x86_64/jre/../include -I/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.71-2.5.3.0.fc20.x86_64/jre/../include/linux'
java libs : '-L/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.71-2.5.3.0.fc20.x86_64/jre/lib/amd64/server -ljvm'
checking whether Java run-time works...
Error: Could not find or load main class getsp
no
configure: error: Java interpreter '/bin/java' does not work
ERROR: configuration failed for package ‘rJava’
* removing ‘/home/tamaspavlicek/R/x86_64-redhat-linux-gnu-library/3.1/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/tamaspavlicek/R/x86_64-redhat-linux-gnu-library/3.1/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/tamaspavlicek/R/x86_64-redhat-linux-gnu-library/3.1/xlsx’
Warning in install.packages :
installation of package ‘xlsx’ had non-zero exit status
The downloaded source packages are in
‘/tmp/Rtmpj1UG8a/downloaded_packages’
Java 已安装：
java -version 给出以下输出：
java version "1.7.0_71"
OpenJDK Runtime Environment (fedora-2.5.3.0.fc20-x86_64 u71-b14)
OpenJDK 64-Bit Server VM (build 24.65-b04, mixed mode)
“sudo R CMD javareconf”导致：
Java interpreter : /bin/java
Java version : 1.7.0_71
Java home path : /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.71-2.5.3.0.fc20.x86_64/jre
Java compiler : /bin/javac
Java headers gen.: /bin/javah
Java archive tool: /bin/jar
trying to compile and link a JNI progam
detected JNI cpp flags : -I$(JAVA_HOME)/../include -I$(JAVA_HOME)/../include/linux
detected JNI linker flags : -L$(JAVA_HOME)/lib/amd64/server -ljvm
gcc -m64 -std=gnu99 -I/usr/include/R -DNDEBUG -I/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.71-2.5.3.0.fc20.x86_64/jre/../include -I/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.71-2.5.3.0.fc20.x86_64/jre/../include/linux -I/usr/local/include -fpic -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -c conftest.c -o conftest.o
gcc -m64 -std=gnu99 -shared -Wl,-z,relro -o conftest.so conftest.o -L/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.71-2.5.3.0.fc20.x86_64/jre/lib/amd64/server -ljvm -L/usr/lib64/R/lib -lR
JAVA_HOME : /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.71-2.5.3.0.fc20.x86_64/jre
Java library path: $(JAVA_HOME)/lib/amd64/server
JNI cpp flags : -I$(JAVA_HOME)/../include -I$(JAVA_HOME)/../include/linux
JNI linker flags : -L$(JAVA_HOME)/lib/amd64/server -ljvm
Updating Java configuration in /usr/lib64/R
Done.
尽管如此，install.packages('rJava') 会导致：
checking Java support in R... present:
interpreter : '/bin/java'
archiver : '/bin/jar'
compiler : '/bin/javac'
header prep.: '/bin/javah'
cpp flags : '-I/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.71-2.5.3.0.fc20.x86_64/jre/../include -I/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.71-2.5.3.0.fc20.x86_64/jre/../include/linux'
java libs : '-L/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.71-2.5.3.0.fc20.x86_64/jre/lib/amd64/server -ljvm'
checking whether Java run-time works...
Error: Could not find or load main class getsp
no
configure: error: Java interpreter '/bin/java' does not work
ERROR: configuration failed for package ‘rJava’
* removing ‘/home/tamaspavlicek/R/x86_64-redhat-linux-gnu-library/3.1/rJava’
Warning in install.packages :
installation of package ‘rJava’ had non-zero exit status
The downloaded source packages are in
‘/tmp/Rtmpnl17m7/downloaded_packages’
我不知道如何解决这个java问题。我使用 RStudio 和 Fedora。 非常感谢您的帮助。
谢谢
塔马斯
如果您安装了 Java，请尝试从命令行重置 R 的 java 配置。即使安装了Java，也可能没有开发组件。当您执行 javareconf 时，您可能会看到以下错误消息：
conftest.c:1:10: fatal error: jni.h: No such file or directory
1 | #include <jni.h>
使用包管理器通常很容易安装。对于 Ubuntu，只需进行软件包安装即可。在决定要安装哪个版本之前，请运行 apt-cache search openjdk。
sudo apt install openjdk-21-jdk
那么下面的命令就成功了，为成功的R install.packages("rJava")铺平道路。
sudo R CMD javareconf
然后再次尝试安装
rJavainstall.packages('rJava')
如果这仍然没有解决您的问题，则错误表明 R 无法加载 getsp。：
checking whether Java run-time works...
Error: Could not find or load main class getsp
首先验证 getsp 是否可访问。
locate getsp
输出可能包含多个项目，但您应该找到类似这样的内容：
/usr/share/R/share/java/getsp.class
然后我们希望可以访问它，因此将其导出以便 R 可以找到它：
export CLASSPATH=/usr/share/R/share/java
在同一窗口中，启动另一个 R 会话并尝试再次安装
rJava另一件事是休息 JAVA_HOME 并重新运行
javareconfexport JAVA_HOME=/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.71.x86_64/jre
export PATH=$PATH:$JAVA_HOME/bin
sudo R CMD javareconf
还建议在
rJava issues中
unset CLASSPATH，因为它可能会导致其他问题。如果这仍然不能解决问题，您可能应该在尝试更改 JAVA_HOME 之前执行此操作并再次重置。
编辑
鉴于这个问题在相当长一段时间内一直“未得到解答”，我想我还应该添加我的建议，即仅使用不使用 Java 的 readxl 包。它安装起来更加容易，并且是 tidyverse 的一部分。只是对那些尝试使用 Excel 文件的人的一般建议。
好吧，我终于通过将“JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.25.x86_64/jre/”添加到我的主文件夹中的.bashrc来管理它。
感谢您的帮助，cdeterman。
最好的塔马斯
是Java的问题。我认为您的系统上尚未安装Java。检查Java是否已经安装：
java -version
如果返回“The program java can be find in the following packages”，则说明Java还没有安装，所以执行以下命令：
sudo apt-get install default-jre
sudo apt-get install default-jdk
然后尝试重新安装该软件包。
这个解决方案对我来说非常有效：
https://orajavasolutions.wordpress.com/2014/06/03/installing-and-loading-xlsx-package-in-r-with-ubuntu/