rJava加载错误-“预期的字符向量" [英] rJava loading error- "character vector expected"

问题描述

我正在使用64位Windows 7& 64位R 3.2.0.我已经下载了rJava软件包，但是它给出了如下错误.

I am using 64 bit windows 7 & 64 bit R 3.2.0. I have downloaded rJava package, but it is giving an error as follows.

错误:'rJava'的loadNamespace()中的.onLoad失败，详细信息:
调用:dirname(this $ RuntimeLib)错误:字符向量参数 预期此外:警告消息:"rJava"软件包是在以下目录下构建的 R版本3.2.2错误:"rJava"的包或名称空间加载失败

Error : .onLoad failed in loadNamespace() for 'rJava', details:
call: dirname(this$RuntimeLib) error: a character vector argument expected In addition: Warning message: package ‘rJava’ was built under R version 3.2.2 Error: package or namespace load failed for ‘rJava’

我在stackoverflow中搜索了答案，并执行了以下操作:

I searched stackoverflow for answers, and did the following:

1)将jvm.dll文件添加到我的PATH变量中，即在以下目录中:

1) Added the jvm.dll file to my PATH variable, i.e. in the following directory:

C:\Program Files\Java\jdk1.8.0_25\jre\bin\

2)我正在使用64位R 3.2.0&检查JVM版本是否为64位，在命令行上键入以下内容:

2) I am using 64 bit R 3.2.0 & checked if the JVM version was 64 bit or not, typing the following on the command line:

java -d64 -version

它给出了以下输出:

C:\Users\xyz> java -d64 -version
java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b18)
Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)

因此，至少JVM与R匹配.

So at least the JVM matches with R.

那么，要使rJava工作起来，还需要做更多的事情吗?我还检查了我的PATH变量，看起来还可以.

So what more needs to be done to make rJava work? I also checked my PATH variable and it seems okay.

推荐答案

我知道这为时已晚，但是您是否尝试过将R版本切换为诊断步骤?

I know this is way too late, but did you try switching R versions as a diagnostic step?

对于RStudio 1.0.136:工具->全局选项...->常规:R版本:更改-选择32位.

For RStudio 1.0.136: Tools -> Global Options... -> General: R version: Change - Choose 32 bit.

更改版本对我有用，并提示我重新访问Java安装. (最终仅使用R32)

Changing versions worked for me and prompted me to revisit my java installation. (Ended up just using R32)

使用R64遇到相同的错误:

Got the same error with R64:

Loading required package: XLConnectJars
Error : .onLoad failed in loadNamespace() for 'rJava', details:
  call: dirname(this$RuntimeLib)
  error: a character vector argument expected
Error: package ‘XLConnectJars’ could not be loaded

使用计算机的默认R64在Windows 10上运行RStudio.

Was running RStudio on Windows 10 using machine's default R64.

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