在OSX 10.13.2的RStudio 1.1.414中加载XLConnect报错求助

Hey there, let's tackle this frustrating error you're facing with XLConnect. The root cause here is that rJava (a critical dependency for XLConnect) can't locate your Java runtime library (libjvm.dylib), a common issue on macOS when Java environment variables aren't properly configured for R.

Here's a step-by-step solution to get things working smoothly:

1. Confirm Java JDK is Installed (and 64-bit) #

First, make sure you have the Java Development Kit (JDK) installed—not just the basic JRE. Open Terminal and run these commands:

java -version
javac -version

• You should see valid output for both commands. If javac throws an error, install Java 8 (your older R 3.4 version works best with this stable Java release).
• Double-check it's 64-bit: the output should explicitly mention 64-Bit (e.g., Java(TM) SE Runtime Environment (build 1.8.0_391-b13) 64-Bit).

2. Set Java Library Path for R #

We need to tell R exactly where to find the libjvm.dylib file:

1. Locate your JDK's installation path. It typically looks like this (replace XXX with your actual JDK version number):

   /Library/Java/JavaVirtualMachines/jdk1.8.0_XXX.jdk/Contents/Home/jre/lib/server/
   

   You can find the exact version by navigating to /Library/Java/JavaVirtualMachines/ in Finder.

2. Temporary Fix (current session only):
   In Terminal, run these commands to launch RStudio with the correct path set:

   export LD_LIBRARY_PATH="/Library/Java/JavaVirtualMachines/jdk1.8.0_XXX.jdk/Contents/Home/jre/lib/server:$LD_LIBRARY_PATH"
   open -a RStudio
   

3. Permanent Fix:
   Edit your shell profile to save the path permanently:

   # For Bash users
   nano ~/.bash_profile
   
   # For Zsh users
   nano ~/.zshrc
   

   Add this line (replace XXX with your version):

   export LD_LIBRARY_PATH="/Library/Java/JavaVirtualMachines/jdk1.8.0_XXX.jdk/Contents/Home/jre/lib/server:$LD_LIBRARY_PATH"
   

   Save and exit (Ctrl+O → Enter → Ctrl+X), then restart Terminal and RStudio.

3. Reinstall rJava and XLConnect #

Old package versions might be compiled against the wrong Java environment. Let's reinstall them from source:

1. In RStudio, uninstall existing packages:

   remove.packages(c("rJava", "XLConnectJars", "XLConnect"))
   

2. Close RStudio, open R directly from Terminal (run R), then install the packages:

   install.packages("rJava", type = "source")
   install.packages("XLConnect")
   

3. Close the Terminal R session, then reopen RStudio.

4. Verify the Fix #

Run this in RStudio to confirm everything works:

library(XLConnect)

If no error appears, you're all set!

Quick Architecture Match Check #

Ensure R and Java are both 64-bit:

• In R, run: .Machine$sizeof.pointer — a return value of 8 means R is 64-bit.
• As before, java -version confirms Java's 64-bit status.

内容的提问来源于stack exchange，提问作者KhoiSan