※ 引述《celestialgod (攸藍)》之銘言：
因為xls可以存取UTF-8位元，昨天就有想到可以直接讀取xls。
但rJava這個package一直裝不進去...
install.packages('rJava') #這部分沒有問題
library(rJava) #這邊就產生下面的錯誤訊息
Error : .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: package or namespace load failed for ‘rJava’
Java版本不太會查，不知道是不是這個？
已經有用Java upload檢查過了是最新版，
build 1.8.0_45-bl5
截圖如下：
http://imgur.com/bUPpe9f
補上sessionInfo()
R version 3.2.1 (2015-06-18)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1
locale:
[1] LC_COLLATE=Chinese (Traditional)_Taiwan.950
[2] LC_CTYPE=Chinese (Traditional)_Taiwan.950
[3] LC_MONETARY=Chinese (Traditional)_Taiwan.950
[4] LC_NUMERIC=C
[5] LC_TIME=Chinese (Traditional)_Taiwan.950
: xls部分
: 好讀上色版：http://pastebin.com/2L5UrhSq
: library(rJava)
: library(xlsx)
: library(data.table)
: library(magrittr)