rJava 安装错误“无法从注册表中确定 JAVA_HOME”
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/29522088/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
rJava install error "JAVA_HOME cannot be determined from the Registry"
提问by Eric
I am trying to load the rJava using the command:
我正在尝试使用以下命令加载 rJava：
library(rJava)
But I get the following error:
但我收到以下错误：
Error : .onLoad failed in loadNamespace() for 'rJava', details:
call: fun(libname, pkgname)
error: JAVA_HOME cannot be determined from the Registry
Error: package or namespace load failed for ‘rJava'
I tried reinstalling both the Java and the R program with the latest versions but still get these errors.. May I know how I can resolve this? Thank you very much!
我尝试使用最新版本重新安装 Java 和 R 程序，但仍然出现这些错误..我可以知道如何解决这个问题吗？非常感谢！
采纳答案by Raja Anbazhagan
This error is often resolved by installing a Java version (i.e. 64-bit Java or 32-bit Java) that fits to the type of R version that you are using (i.e. 64-bit R or 32-bit R). This problem can easily effect Windows 7 users, since they might have installed a version of Java that is different than the version of R they are using.
通常通过安装适合您使用的 R 版本类型（即 64 位 R 或 32 位 R）的 Java 版本（即 64 位 Java 或 32 位 Java）来解决此错误。此问题很容易影响 Windows 7 用户，因为他们安装的 Java 版本可能与他们使用的 R 版本不同。
回答by TomaszGuzialek
R for Windows installer installs by default both 32-bit and 64-bit files. Reinstalling R and unticking 32-bit part solved the problem for me.
R for Windows 安装程序默认安装 32 位和 64 位文件。重新安装 R 并取消勾选 32 位部分为我解决了这个问题。
回答by Shawn Cefalu
As mentioned in the r-statistics link cited above, you have to manually download the 64-bit version of Java. If not, then the 32-bit version will be installed.
如上面引用的 r-statistics 链接所述，您必须手动下载 64 位版本的 Java。如果没有，则将安装 32 位版本。
So, if you have a 64-bit operating system, then ensure that both R and Java are using the 64-bit installs. Otherwise, this problem will persist.
因此，如果您有 64 位操作系统，请确保 R 和 Java 都使用 64 位安装。否则，这个问题会一直存在。
回答by AnksG
I got the same error resolved by installing same version of R and Java i.e. 64 bits and manually updating the path i.e. ,
通过安装相同版本的 R 和 Java（即 64 位）并手动更新路径，即解决了相同的错误，
Sys.setenv(JAVA_HOME='C:/Program Files/Java/jre1.8.0_121') # for 64-bit version
回答by Xiao QianYu
This has been killing me and I have tried multiple methods above, it doesn't work. After, I mix all solution to try and below process works for me.
这一直在杀死我，我尝试了上面的多种方法，它不起作用。之后，我混合了所有解决方案以尝试以下过程对我有用。
- Install Java for 64 bit
- Run below code in windows command
setx PATH "C:\Program Files\Java\jre1.8.0_171\bin\server;%PATH%"
(please change the address acorrding to your dvm.dll real address) - Run below in R studio
Sys.setenv(JAVA_HOME="")
Then I finally can runlibrary(rJava)library(xlsx)
- 为 64 位安装 Java
- 在windows命令中运行以下代码
setx PATH "C:\Program Files\Java\jre1.8.0_171\bin\server;%PATH%"
（请将地址更改为您的dvm.dll真实地址） - 在R studio下面运行
Sys.setenv(JAVA_HOME="")
然后我终于可以运行了library(rJava)library(xlsx)
回答by Balasaheb Sonawane
Install 64 bit Java from https://java.com/en/download/manual.jsp.
Then in windows cmd runsetx PATH "C:\Program Files\Java\jre1.8.0_211\bin\server;%PATH%"
(make sure your path is correct).
从https://java.com/en/download/manual.jsp安装 64 位 Java 。
然后在 Windows cmd 中运行setx PATH "C:\Program Files\Java\jre1.8.0_211\bin\server;%PATH%"
（确保您的路径正确）。
Then in RStudio runSys.setenv(JAVA_HOME="")
然后在 RStudio 中运行Sys.setenv(JAVA_HOME="")
Now, you should be able to run rJava!!
现在，您应该可以运行 rJava 了！！
回答by Mina Saleh
If R is 64-bit version make sure to install Java 64-bit version!
如果 R 是 64 位版本，请确保安装 Java 64 位版本！
If R is x86-bit version make sure to install Java x86-bit version!
如果 R 是 x86 位版本，请确保安装 Java x86 位版本！
回答by Vela
I faced the same issue and was feeling very down as I couldnt get my analysis done. This worked for me :
我遇到了同样的问题，并且因为无法完成分析而感到非常沮丧。这对我有用：
check your operating system. 64 bit or 32 bit. https://helpx.adobe.com/x-productkb/global/determine-whether-computer-running-32.html
uninstall previous versions of Java.
delete rJAVA library from Doc>R>win-library. If you have more than 1 versions of R, make sure you delete rJAVA package from all of them.
install Java based on system requirement (64 bit or 32 bit).
and finally restart R before and after installing rJava package.
检查您的操作系统。64 位或 32 位。 https://helpx.adobe.com/x-productkb/global/determine-whether-computer-running-32.html
卸载以前版本的 Java。
从 Doc>R>win-library 中删除 rJAVA 库。如果您有 1 个以上的 R 版本，请确保从所有版本中删除 rJAVA 包。
根据系统要求（64 位或 32 位）安装 Java。
最后在安装 rJava 包之前和之后重新启动 R。
