我最近更新到了Sierra，似乎我无法加载依赖于rJava的软件包。
例如：
library(xlsx)
给出：
Loading required package: rJava
Loading required package: xlsxjars
JavaVM: requested Java version ((null)) not available. Using Java at "" instead.
JavaVM: Failed to load JVM: /bundle/Libraries/libserver.dylib
JavaVM FATAL: Failed to load the jvm library.
Error : .onLoad failed in loadNamespace() for 'xlsx', details:
call: .jinit()
error: JNI_GetCreatedJavaVMs returned -1
Error: package or namespace load failed for ‘xlsx’
这是我的会话信息：
R version 3.3.2 (2016-10-31)
Platform: x86_64-apple-darwin13.4.0 (64-bit)
Running under: macOS Sierra 10.12
Java已更新到最新版本（8.111）。