R，加载rJava错误 [英] R, loading rJava error
问题描述
我正在macOS sierra(10.12.5)上运行R(版本3.4.0)，并且尝试使用xlsx库，该库要求使用rJava库.
I'm running R (version 3.4.0) on macOS sierra (10.12.5) and I'm trying to use the xlsx library which requires the use of the rJava library.
当我尝试在R控制台中使用library(rJava)加载rJava时(无论是在RStudio还是在终端中都没有区别)，我收到以下错误消息，我无法理解:
When I try to load rJava using library(rJava) in the R console (no difference if in RStudio or in the terminal), I get the following error message which I'm having trouble making sense of:
Fehler: package or namespace load failed for ‘rJava’:
.onLoad in loadNamespace() für 'rJava' fehlgeschlagen, Details:
Aufruf: dyn.load(file, DLLpath = DLLpath, ...)
Fehler: kann shared object '/Library/Frameworks/R.framework/Versions/3.4/Resources/library/rJava/libs/rJava.so' nicht laden:
dlopen(/Library/Frameworks/R.framework/Versions/3.4/Resources/library/rJava/libs/rJava.so, 6): Library not loaded: @rpath/libjvm.dylib
Referenced from: /Library/Frameworks/R.framework/Versions/3.4/Resources/library/rJava/libs/rJava.so
Reason: image not found
谷歌搜索这个问题，我发现了很多类似的帖子(但每次都有一些不同的问题)，
Googling the problem I found a number of posts on somewhat similar (but each time slightly different problems), this SO question being the most promising among them.
由于建议的步骤需要适应我的情况，而且我是一个新手，因此我无法实现它们.我该怎么办?
Since the steps of the proposed require adaptation to my case and I'm kind of a novice, I wasn't able to implement them. What can I do?
其他信息:
shell命令java -version返回:
The shell command java -version returns:
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)
shell命令R CMD javareconf返回:
And the shell command R CMD javareconf returns:
Java interpreter : /usr/bin/java
Java version : 1.8.0_131
Java home path : /Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre
Java compiler : /usr/bin/javac
Java headers gen.: /usr/bin/javah
Java archive tool: /usr/bin/jar
Non-system Java on macOS
trying to compile and link a JNI program
detected JNI cpp flags : -I$(JAVA_HOME)/../include -I$(JAVA_HOME)/../include/darwin
detected JNI linker flags : -L$(JAVA_HOME)/lib/server -ljvm
clang -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/../include -I/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/../include/darwin -I/usr/local/include -fPIC -Wall -g -O2 -c conftest.c -o conftest.o
clang -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress - L/Library/Frameworks/R.framework/Resources/lib -L/usr/local/lib -o conftest.so conftest.o -L/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/server -ljvm -F/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation
JAVA_HOME /Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre
Java library path: $(JAVA_HOME)/lib/server
JNI cpp flags : -I$(JAVA_HOME)/../include -I$(JAVA_HOME)/../include/darwin
JNI linker flags : -L$(JAVA_HOME)/lib/server -ljvm
Updating Java configuration in /Library/Frameworks/R.framework/Resources
Done.
任何帮助将不胜感激！
推荐答案
有效！
在安装并重新安装了不同的Java版本并使用R命令重新安装了rJava之后，我发现在R控制台(shell窗口)中加载库不再抛出错误消息.
After installing and reinstalling different java versions and reinstalling rJava with the R command install.packages("rJava") I got to the point where loading the library in the R console (shell window) didn't throw an error message anymore.
After that I was able to use the answer in this post to get it to work in RStudio by running this shell command:
sudo ln -f -s $(/usr/libexec/java_home)/jre/lib/server/libjvm.dylib /usr/local/lib
毕竟不太复杂！谢谢大家的耐心配合.
Not too complicated after all! Thank you for everyones patience.
这篇关于R，加载rJava错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
