Jruby新手：安装gem

Question

I have jruby-1.7.0 installed via rvm on OSX Mountain Lion. I know Ruby reasonably well, but have very little experience with Java.

After getting it set up, the first thing I've tried to do is install a gem (specifically gem install bundler ). Nothing happens, and I am not returned to prompt. Only sign of action is that my macbook's fan cranks up and, after a few minutes, the machine gets pretty warm.

I can't really figure out how to track down what's happening, and more importantly, how to fix it. Any suggestions on how to diagnose this?

Answer 1

I think gem install --verbose bundler should give you more feedback on what's going on, which is good if you're wondering if anything's happening at all.

gem env shows how rubygems is set up. Running it will also show that at least some part of rubygems is working as it ought to.

Answer 2

我刚刚安装了它并安装了gem，您需要为jruby使用gem的特定安装。

Answer 3

如果您使用的是较旧的Java，则使用最新版本的Java 1.7或实验性Java 1.8，jruby的运行速度会更快