Java 无法在 Mac OS 10.11 上加载 R xlsx 包
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Cannot load R xlsx package on Mac OS 10.11
提问by Matt Hagen
I can load the rJava and xlsxjars packages, but I get a "Failed to load JVM" when I execute library(xlsx). Below are my details.
我可以加载 rJava 和 xlsxjars 包，但是在执行 library(xlsx) 时出现“无法加载 JVM”。以下是我的详细信息。
OS Version:
操作系统版本：
$ sw_vers
ProductName: Mac OS X
ProductVersion: 10.11
BuildVersion: 15A284
Java Version:
爪哇版：
$ java -version
java version "1.8.0_65"
Java(TM) SE Runtime Environment (build 1.8.0_65-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.65-b01, mixed mode)
Java Path:
Java路径：
$ which java
/usr/bin/java
Java Home:
Java主页：
$ /usr/libexec/java_home
/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home
R Version:
版本：
$ R --version
R version 3.2.3 (2015-12-10) -- "Wooden Christmas-Tree"
Copyright (C) 2015 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin13.4.0 (64-bit)
How I launch R:
我如何启动 R：
$ LD_LIBRARY_PATH=$(/usr/libexec/java_home)/jre/lib/server: open -a RStudio
Loading the rJava and xlsxjars packages successfully:
成功加载 rJava 和 xlsxjars 包：
> library(rJava)
> library(xlsxjars)
Unsuccessfully trying to load the xlsx package:
尝试加载 xlsx 包失败：
> library(xlsx)
JavaVM: requested Java version ((null)) not available. Using Java at "" instead.
JavaVM: Failed to load JVM: /bundle/Libraries/libserver.dylib
JavaVM FATAL: Failed to load the jvm library.
Error : .onLoad failed in loadNamespace() for 'xlsx', details:
call: .jinit()
error: JNI_GetCreatedJavaVMs returned -1
Error: package or namespace load failed for ‘xlsx'
R Configuration:
R 配置：
Matts-MacBook-Pro:~ matt$ R CMD javareconf
Java interpreter : /usr/bin/java
Java version : 1.8.0_65
Java home path : /Library/Java/JavaVirtualMachines/jdk1.8.0_65.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 OS X
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_65.jdk/Contents/Home/jre/../include -I/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/../include/darwin -I/usr/local/include -I/usr/local/include/freetype2 -I/opt/X11/include -fPIC -Wall -mtune=core2 -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_65.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_65.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
回答by rothers
Basically, just do what is described here: https://oliverdowling.com.au/2015/10/09/oracles-jre-8-on-mac-os-x-el-capitan/
基本上，只需执行此处描述的操作：https: //oliverdowling.com.au/2015/10/09/oracles-jre-8-on-mac-os-x-el-capitan/
short version: d/l Java JRE from oracle as tar file http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html
短版：来自 oracle 的 d/l Java JRE 作为 tar 文件 http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html
then put this into you terminal (for sudo, your pw is needed):
然后将其放入您的终端（对于 sudo，需要您的密码）：
cd ~/Downloads
tar -xzf `ls -1r jre-*-macosx-x64.tar.gz | head -1`
cd `ls -1rd jre*/ | head -1`
defaults write `pwd`/Contents/Info.plist JavaVM -dict-add 'JVMCapabilities' '<array><string>JNI</string><string>BundledApp</string><string>CommandLine</string></array>'
plutil -convert xml1 Contents/Info.plist
sudo mv `pwd` /Library/Java/JavaVirtualMachines/
mkdir -p Contents/Home/bundle/Libraries
cd Contents/Home/bundle/Libraries
ln -s ../../lib/server/libjvm.dylib libserver.dylib
works fine on my OS X 10.11
在我的 OS X 10.11 上运行良好
回答by Tobias Mini
I ′ve got also problems with loading packages like openNLP, xlsx, RWeka, ... and got the same error message like you.
But finally this command worked for me on OS X 10.11.3:
sudo ln -s $(/usr/libexec/java_home)/jre/lib/server/libjvm.dylib /usr/local/lib
我在加载 openNLP、xlsx、RWeka 等软件包时也遇到了问题，并得到了与您相同的错误消息。但最后这个命令在 OS X 10.11.3 上对我有用：
sudo ln -s $(/usr/libexec/java_home)/jre/lib/server/libjvm.dylib /usr/local/lib
回答by SanjayIV
Unfortunately, these symlink tricks didn't help me. However, I found a similar issue on stackoverflow! (where else ;)) This one worked for me by doing the following:
不幸的是，这些符号链接技巧对我没有帮助。但是，我在stackoverflow上发现了类似的问题！（其他地方;））通过执行以下操作，这个对我有用：
In terminal enter the following to relink Java correctly:
sudo R CMD javareconfBack in R (or RStudio) install the rJava package from source:
install.packages("rJava",type='source')
在终端中输入以下内容以正确重新链接 Java：
sudo R CMD javareconf回到 R（或 RStudio），从源代码安装 rJava 包：
install.packages("rJava",type='source')
Hope, this helps!
希望这可以帮助！
回答by Iuri
There might be a problem in the version of Java for which the R xlsx package was built in. Some old software require to install the Java 6 for OS X 10.11 El Capitan, OS X 10.10 Yosemite, OS X 10.9 Mavericks, OS X 10.8 Mountain Lion, and OS X 10.7 Lion. So you can try to install this old version of Java (Java for OS X 2015-001) at Apple website, link below: https://support.apple.com/kb/DL1572?locale=pt_BR&viewlocale=en_US
内置 R xlsx 包的 Java 版本可能存在问题。一些旧软件需要为 OS X 10.11 El Capitan、OS X 10.10 Yosemite、OS X 10.9 Mavericks、OS X 10.8 Mountain 安装 Java 6 Lion 和 OS X 10.7 Lion。所以你可以尝试在 Apple 网站上安装这个旧版本的 Java（Java for OS X 2015-001），链接如下：https: //support.apple.com/kb/DL1572?locale=pt_BR&viewlocale=en_US
And check if you have a Java SE Development Kit 8. You can download it at Oracle website, link below: www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
并检查您是否有 Java SE Development Kit 8。您可以在 Oracle 网站下载，链接如下： www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
I was having the same problem and downloading the old version of Java solved it.. I hope this help you!
我遇到了同样的问题，下载旧版本的 Java 解决了它.. 希望这对你有帮助！
