无法下载xlsx或rjava R软件包

我试图在R中下载

xlsx

软件包，但收到以下错误消息：

Error: package or namespace load failed for 'xlsx':
 .onLoad failed in loadNamespace() for 'rJava', details:
  call: fun(libname, pkgname)
  error: No CurrentVersion entry in Software/JavaSoft registry! Try re-installing Java and make sure R and Java have matching architectures.
Error: loading failed
Execution halted
*** arch - x64
ERROR: loading failed for 'i386'
* removing 'C:/Users/X/Documents/R/win-library/3.6/xlsx'
Warning in install.packages :
  installation of package ‘xlsx’ had non-zero exit status

ERROR*> JavaSoft\{JRE|JDK} can't open registry keys.
ERROR: cannot find Java Development Kit.
       Please set JAVA_HOME to specify its location manually
ERROR: configuration failed for package 'rJava'
* removing 'C:/Users/X/Documents/R/win-library/3.6/rJava'
* restoring previous 'C:/Users/X/Documents/R/win-library/3.6/rJava'
Warning in install.packages :
  installation of package ‘rJava’ had non-zero exit status

我还尝试下载了

rjava

，但收到以下错误消息：

Error: package or namespace load failed for 'xlsx':
 .onLoad failed in loadNamespace() for 'rJava', details:
  call: fun(libname, pkgname)
  error: No CurrentVersion entry in Software/JavaSoft registry! Try re-installing Java and make sure R and Java have matching architectures.
Error: loading failed
Execution halted
*** arch - x64
ERROR: loading failed for 'i386'
* removing 'C:/Users/X/Documents/R/win-library/3.6/xlsx'
Warning in install.packages :
  installation of package ‘xlsx’ had non-zero exit status

ERROR*> JavaSoft\{JRE|JDK} can't open registry keys.
ERROR: cannot find Java Development Kit.
       Please set JAVA_HOME to specify its location manually
ERROR: configuration failed for package 'rJava'
* removing 'C:/Users/X/Documents/R/win-library/3.6/rJava'
* restoring previous 'C:/Users/X/Documents/R/win-library/3.6/rJava'
Warning in install.packages :
  installation of package ‘rJava’ had non-zero exit status

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我已经在我的计算机上重新安装了Java，采用了与s my computer和R（64位）相同的体系结构，大多数在线帮助都说我应该试试。有人遇到过同样的问题吗？

在我看来，您的

JAVA_HOME

环境变量可能没有问题，但我只是尝试了这个Sys.setenv（JAVA_HOME='C:/Program Files/JAVA/jre1.8.0_121'），然后尝试安装.packages（“rjava”），但仍然无法工作@JeroenSteenbeekeI我不熟悉R，所以我不确定这是怎么回事，但这可能只是为当前进程设置环境变量，而Java是一个外部进程。我建议尝试为整个系统全局设置Java Home，通过Windows设置shm，我尝试了本教程设置Java Home，但仍然不起作用。我根据链接创建了一个新路径，并将新路径设置为JAVA_HOME jre1.8.0_121。太奇怪了，没用！