安装软件包时，.onLoad在'rJava‘的loadNamespace()中失败
安装软件包时，.onLoad在'rJava‘的loadNamespace()中失败
提问于 2015-04-29 19:02:54
我有一个导入rJava的包"javaOnLoadFailed“(这只是一个用于测试我的问题的最小包，因此有个奇怪的名字)。当我尝试检查()或安装()包时，我得到了'rJava‘错误，尽管require(rJava)本身工作得很好。
install()给出以下错误：
> install()
Installing javaOnloadFailed
"C:/Program Files/R/R-3.2.0/bin/x64/R" --no-site-file --no-environ --no-save \
--no-restore CMD INSTALL \
"C:/Projects/stackoverflow/javaOnloadFailed/javaOnLoadFailed" \
--library="C:/Users/adb2018/Documents/R/win-library/3.2" --with-keep.source \
--install-tests
* installing *source* package 'javaOnloadFailed' ...
** R
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
*** arch - i386
Error : .onLoad failed in loadNamespace() for 'rJava', details:
call: inDL(x, as.logical(local), as.logical(now), ...)
error: unable to load shared object 'C:/Users/adb2018/Documents/R/win-library/3.2/rJava/libs/i386/rJava.dll':
LoadLibrary failure: %1 is not a valid Win32 application.
Error: loading failed
Execution halted
*** arch - x64
ERROR: loading failed for 'i386'
* removing 'C:/Users/adb2018/Documents/R/win-library/3.2/javaOnloadFailed'
Error: Command failed (1)我使用的是Architect中的R 3.2.0，带有sessionInfo()：
R version 3.2.0 (2015-04-16)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1
locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] devtools_1.7.0.9000 rj_2.0.3-2
loaded via a namespace (and not attached):
[1] tools_3.2.0 rj.gd_2.0.0-1回答 5
Stack Overflow用户
发布于 2015-04-29 19:17:05
Java环境变量为空
> Sys.getenv('JAVA')
[1] ""基于suggestion，我尝试将JAVA环境变量设置为指向64位版本的Java (因为我运行的是R64位，正如您从sessionInfo中看到的，但这不起作用：
> Sys.setenv(JAVA_HOME='C:\\Program Files\\Java\\jre1.8.0_45')
> install()
Installing javaOnloadFailed
"C:/Program Files/R/R-3.2.0/bin/x64/R" --no-site-file --no-environ --no-save \
--no-restore CMD INSTALL \
"C:/Projects/stackoverflow/javaOnloadFailed/javaOnLoadFailed" \
--library="C:/Users/adb2018/Documents/R/win-library/3.2" --with-keep.source \
--install-tests
* installing *source* package 'javaOnloadFailed' ...
** R
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
*** arch - i386
Error : .onLoad failed in loadNamespace() for 'rJava', details:
call: inDL(x, as.logical(local), as.logical(now), ...)
error: unable to load shared object 'C:/Users/adb2018/Documents/R/win-library/3.2/rJava/libs/i386/rJava.dll':
LoadLibrary failure: %1 is not a valid Win32 application.
Error: loading failed
Execution halted
*** arch - x64
ERROR: loading failed for 'i386'
* removing 'C:/Users/adb2018/Documents/R/win-library/3.2/javaOnloadFailed'
Error: Command failed (1)然后，我尝试设置JAVA环境变量，使其指向我系统上的32位版本的Java，然后它就可以工作了！
> Sys.setenv(JAVA_HOME='C:\\Program Files (x86)\\Java\\jre1.8.0_45\\')
> install()
Installing javaOnloadFailed
"C:/Program Files/R/R-3.2.0/bin/x64/R" --no-site-file --no-environ --no-save \
--no-restore CMD INSTALL \
"C:/Projects/stackoverflow/javaOnloadFailed/javaOnLoadFailed" \
--library="C:/Users/adb2018/Documents/R/win-library/3.2" --with-keep.source \
--install-tests
* installing *source* package 'javaOnloadFailed' ...
** R
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
*** arch - i386
*** arch - x64
* DONE (javaOnloadFailed)
[INFO] Updating the R environment index started...
[INFO] The R environment index was updated successfully.我不太理解为什么我需要使用Java32位来使R64位工作，但这似乎就是事实。
顺便说一句，不要偶然发现我的包名为"javaOnLoadFailed“。我刚刚用这个名字创建了一个最小的包来测试这个问题。
Stack Overflow用户
发布于 2016-07-07 05:39:15
许多软件包安装失败，因为它们不打算在i386平台上运行，但标准安装过程会尝试这样做。用户在jvm.dll、PATH和JAVA_HOME上浪费了大量时间，而真正的修复方法是迫使已安装的用户忘记i386。对install.packages使用选项。(当使用drat库时，也可以这样做。(功劳归Dason所有)
install.packages("SqlRender",INSTALL_opts="--no-multiarch")Stack Overflow用户
发布于 2018-12-17 10:10:17
当我尝试安装一个仅在Github中可用的包时，我发现了同样的问题。
这为我解决了问题：
devtools::install_github("snowflakedb/dplyr-snowflakedb", INSTALL_opts=c("--no-multiarch"))页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/29941797
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