Question

我问过a similar question before，但没有得到我可以实际实现的任何答案。我还阅读了here和here的答案，但是无法实现其中的任何一个（部分原因是没有答案实际上可以追溯其所有步骤。

问题

尝试在R 3.5.2和MacOS Mojave 10.14.3上加载rJava时出现错误：

$ /usr/libexec/java_home
/Library/Java/JavaVirtualMachines/jdk-11.0.2.jdk/Contents/Home

尝试的解决方案

我首先尝试了this solution，但没有成功。然后，基于this answer，我尝试了以下操作：

在终端上输入以下内容：

> options("java.home"="/Library/Java/JavaVirtualMachines/jdk-11.0.2.jdk/Contents/Home")
> 
> Sys.setenv(LD_LIBRARY_PATH='$JAVA_HOME/server')
> 
> dyn.load('/Library/Java/JavaVirtualMachines/jdk-11.0.2.jdk/Contents/Home/lib/server/libjvm.dylib')
> 
> library(rJava)
Error: package or namespace load failed for ‘rJava’:
 .onLoad failed in loadNamespace() for 'rJava', details:
  call: dyn.load(file, DLLpath = DLLpath, ...)
  error: unable to load shared object '/Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so':
  dlopen(/Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so, 6): Library not loaded: /Library/Java/JavaVirtualMachines/jdk-11.0.1.jdk/Contents/Home/lib/server/libjvm.dylib
  Referenced from: /Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so
  Reason: image not found

然后在R上尝试以下操作：

> options("java.home"="/Library/Java/JavaVirtualMachines/jdk-11.0.2.jdk/Contents/Home/bin")
> Sys.setenv(LD_LIBRARY_PATH='$JAVA_HOME/server')
> dyn.load('/Library/Java/JavaVirtualMachines/jdk-11.0.2.jdk/Contents/Home/lib/server/libjvm.dylib')
> library(rJava)
Error: package or namespace load failed for ‘rJava’:
 .onLoad failed in loadNamespace() for 'rJava', details:
  call: dyn.load(file, DLLpath = DLLpath, ...)
  error: unable to load shared object '/Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so':
  dlopen(/Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so, 6): Library not loaded: /Library/Java/JavaVirtualMachines/jdk-11.0.1.jdk/Contents/Home/lib/server/libjvm.dylib
  Referenced from: /Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so
  Reason: image not found

我也尝试过：

encrypt(plaintxt){
    const secretKey = '12456780123456';
    const iv = "124567890123456";

    let a = "awal";
    AesCrypto.encrypt(plaintxt,secretKey,iv).then(cipher=>{
        a = cipher;
    }).catch(err=>{
        a = err;
    });
    return a;
}

过去，我已经成功降级到R 3.1，但是我不想每次我都想使用rJava时都要这么做

Answer 1

我有类似的问题。如果您尝试了所有这些解决方案但没有任何效果，那么从头开始通常是最好的选择。您不希望这些“修复程序”之一引起更多问题，因为其中大多数都需要您更改环境变量。

这是我修复它的方式。

安装最新的JAVA JDK https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
在终端中运行ServiceClass。请勿自行更改任何环境变量。

希望有帮助。

Answer 2

这是适合我的设置

macOS Mojave-10.14.3
XQuartz-版本2.7.11-https://www.xquartz.org

R-版本5.3.2

> R --version
R version 3.5.2 (2018-12-20) -- "Eggshell Igloo"
Copyright (C) 2018 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin15.6.0 (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under the terms of the
GNU General Public License versions 2 or 3.
For more information about these matters see
http://www.gnu.org/licenses/.

Java-11.0.1

> java -version
java version "11.0.1" 2018-10-16 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.1+13-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.1+13-LTS, mixed mode)

rJava-从CRAN安装

> > install.packages("rJava")
--- Please select a CRAN mirror for use in this session ---
Fontconfig warning: ignoring UTF-8: not a valid region tag
trying URL 'https://cloud.r-project.org/bin/macosx/el-         
capitan/contrib/3.5/rJava_0.9-10.tgz'
Content type 'application/x-gzip' length 739259 bytes (721 KB)
==================================================
downloaded 721 KB


The downloaded binary packages are in
/var/folders/...
> library(rJava)
>

更新

在您的情况下，似乎缺少在rJava的安装/编译过程中使用的JDK。您可以从消息中得知：

dlopen(/Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so, 6): Library not loaded: /Library/Java/JavaVirtualMachines/jdk-11.0.1.jdk/Contents/Home/lib/server/libjvm.dylib
Referenced from: /Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so
Reason: image not found

确保此文件存在：

/Library/Java/JavaVirtualMachines/jdk-11.0.1.jdk/Contents/Home/lib/server/libjvm.dylib

可能丢失了。您在这里有两个选择：安装Java 11.0.1，重新配置R。

您可以使用/usr/libexec/java_home -V

列出所有可用的JVM安装。

再现最初的问题，并加以解决

让我们假装我们已删除JDK 11.0.1

> pwd /Library/Java/JavaVirtualMachines
> tree -L 1
.
|-- jdk-11.0.1.jdk~
`-- jdk-11.0.2.jdk
> java -version
java version "11.0.2" 2019-01-15 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.2+9-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.2+9-LTS, mixed mode)

让我们尝试加载rJava

> R

R version 3.5.2 (2018-12-20) -- "Eggshell Igloo"
Copyright (C) 2018 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin15.6.0 (64-bit)

...
...
...

> library(rJava)
Error: package or namespace load failed for ‘rJava’:
 .onLoad failed in loadNamespace() for 'rJava', details:
  call: dyn.load(file, DLLpath = DLLpath, ...)
  error: unable to load shared object '/Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so':
  dlopen(/Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so, 6): Library not loaded: /Library/Java/JavaVirtualMachines/jdk-11.0.1.jdk/Contents/Home/lib/server/libjvm.dylib
  Referenced from: /Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so
  Reason: image not found

让我们修复

> sudo R CMD javareconf
Java interpreter : /usr/bin/java
Java version     : 11.0.2
Java home path   : /Library/Java/JavaVirtualMachines/jdk-11.0.2.jdk/Contents/Home
Java compiler    : /usr/bin/javac
Java headers gen.: /usr/bin/javah
Java archive tool: /usr/bin/jar

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/jdk-11.0.2.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/jdk-11.0.2.jdk/Contents/Home/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/jdk-11.0.2.jdk/Contents/Home/lib/server -ljvm -F/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation


JAVA_HOME        : /Library/Java/JavaVirtualMachines/jdk-11.0.2.jdk/Contents/Home
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.

现在应该可以正常工作

> R

R version 3.5.2 (2018-12-20) -- "Eggshell Igloo"
Copyright (C) 2018 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin15.6.0 (64-bit)

...
...
...

> library(rJava)
> quit()

无法在MacOS Mojave和R 3.5.2上加载rJava

问题

尝试的解决方案

2 个答案: