https://ruby-china.org/wen_pp en-us <p>最近需要在同一台电脑上同时配置 JRuby on Rails，和 Ruby on Rails 但在 JRuby 下始终安装 Rails 不成功。过程如下： 之前在电脑上已经安装了 RVM 然后默认安装了 Ruby2.2.0 和 Rails4.2.0, 最近项目组需要研究下 JRuby 于是我从 JRuby 官网上下载了 zip 文件，解压后配置了环境变量， 通过下面的方法安装了 jruby,</p> <pre class="highlight shell"><code>rvm mount ~/jruby-1.7.19/bin/jruby </code></pre> <p>然后执行 rvm list </p> <pre class="highlight shell"><code> rvm rubies ext-jruby-1.7.19 <span class="o">[</span> x86_64 <span class="o">]</span> ext-q <span class="o">[</span> universal <span class="o">]</span> <span class="o">=</span><span class="k">*</span> ruby-2.2.0 <span class="o">[</span> x86_64 <span class="o">]</span> </code></pre> <p>这个时候执行 which rails 的位置信息如下：</p> <pre class="highlight shell"><code>MacBook-Pro:/neo <span class="nv">$ </span>which rails /Users/neo/.rvm/gems/ruby-2.2.0/bin/rails MacBook-Pro:/neo<span class="nv">$ </span>rails <span class="nt">-v</span> Rails 4.2.0 </code></pre> <p>切换到 JRuby 下面</p> <pre class="highlight shell"><code>MacBook-Pro:/ neo<span class="nv">$ </span>rvm use ext-jruby-1.7.19 <span class="nt">--default</span> Using /Users/neo/.rvm/gems/ext-jruby-1.7.19 </code></pre> <p>创建并使用一个新的 gemset</p> <pre class="highlight shell"><code>MacBook-Pro:/ neo<span class="nv">$ </span>rvm gemset create rails420 ext-jruby-1.7.19 - <span class="c">#gemset created /Users/neo/.rvm/gems/ext-jruby-1.7.19@rails420</span> ext-jruby-1.7.19 - <span class="c">#generating rails420 wrappers........</span> MacBook-Pro:/ neo<span class="nv">$ </span>rvm gemset use rails420 Using ext-jruby-1.7.19 with gemset rails420 </code></pre> <p>安装 Rails</p> <pre class="highlight shell"><code>MacBook-Pro:/ neo<span class="nv">$ </span>gem <span class="nb">install </span>rails Fetching: rails-4.2.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed rails-4.2.0 1 gem installed </code></pre> <p>这个时候我就觉得很疑惑了，怀疑是不是之前因为网络中断造成某些缓冲还在，我记得 gem insall rails 会安装很多东西，但是这里只有一个，这个时候在执行 which rails , 指向的也是一个奇怪的地址，并且 rails -v 失败，我怀疑是不是什么地方弄错了。</p> <pre class="highlight shell"><code>MacBook-Pro:/ neo<span class="nv">$ </span>which rails /usr/bin/rails MacBook-Pro:/ neo<span class="nv">$ </span>rails <span class="nt">-v</span> Rails is not currently installed on this system. To get the latest version, simply <span class="nb">type</span>: <span class="nv">$ </span><span class="nb">sudo </span>gem <span class="nb">install </span>rails You can <span class="k">then </span>rerun your <span class="s2">"rails"</span> command. </code></pre> <p>这个时候查看 gem list ,也没看出个问题，还望各位指点</p> <pre class="highlight shell"><code>MacBook-Pro:/ neo<span class="nv">$ </span>gem list <span class="k">***</span> LOCAL GEMS <span class="k">***</span> actionmailer <span class="o">(</span>4.2.0<span class="o">)</span> actionpack <span class="o">(</span>4.2.0<span class="o">)</span> actionview <span class="o">(</span>4.2.0<span class="o">)</span> activejob <span class="o">(</span>4.2.0<span class="o">)</span> activemodel <span class="o">(</span>4.2.0<span class="o">)</span> activerecord <span class="o">(</span>4.2.0<span class="o">)</span> activesupport <span class="o">(</span>4.2.0<span class="o">)</span> arel <span class="o">(</span>6.0.0<span class="o">)</span> axiom-types <span class="o">(</span>0.1.1<span class="o">)</span> builder <span class="o">(</span>3.2.2<span class="o">)</span> bundler <span class="o">(</span>1.8.4<span class="o">)</span> coercible <span class="o">(</span>1.0.0<span class="o">)</span> descendants_tracker <span class="o">(</span>0.0.4<span class="o">)</span> equalizer <span class="o">(</span>0.0.9<span class="o">)</span> erubis <span class="o">(</span>2.7.0<span class="o">)</span> ffi <span class="o">(</span>1.9.3 java<span class="o">)</span> gem-wrappers <span class="o">(</span>1.2.7<span class="o">)</span> globalid <span class="o">(</span>0.3.3<span class="o">)</span> hike <span class="o">(</span>1.2.3<span class="o">)</span> i18n <span class="o">(</span>0.7.0<span class="o">)</span> ice_nine <span class="o">(</span>0.11.1<span class="o">)</span> jar-dependencies <span class="o">(</span>0.1.2<span class="o">)</span> jruby-openssl <span class="o">(</span>0.9.5 java<span class="o">)</span> json <span class="o">(</span>1.8.0 java<span class="o">)</span> krypt <span class="o">(</span>0.0.2<span class="o">)</span> krypt-core <span class="o">(</span>0.0.2 universal-java<span class="o">)</span> krypt-provider-jdk <span class="o">(</span>0.0.2<span class="o">)</span> loofah <span class="o">(</span>2.0.1<span class="o">)</span> mail <span class="o">(</span>2.6.3<span class="o">)</span> maven-tools <span class="o">(</span>1.0.7<span class="o">)</span> mime-types <span class="o">(</span>2.4.3<span class="o">)</span> minitest <span class="o">(</span>5.5.1<span class="o">)</span> multi_json <span class="o">(</span>1.11.0<span class="o">)</span> nokogiri <span class="o">(</span>1.6.6.2 java<span class="o">)</span> rack <span class="o">(</span>1.6.0<span class="o">)</span> rack-test <span class="o">(</span>0.6.3<span class="o">)</span> rails <span class="o">(</span>4.2.0<span class="o">)</span> rails-deprecated_sanitizer <span class="o">(</span>1.0.3<span class="o">)</span> rails-dom-testing <span class="o">(</span>1.0.5<span class="o">)</span> rails-html-sanitizer <span class="o">(</span>1.0.2<span class="o">)</span> railties <span class="o">(</span>4.2.0<span class="o">)</span> rake <span class="o">(</span>10.1.0<span class="o">)</span> rdoc <span class="o">(</span>4.1.2<span class="o">)</span> ruby-maven <span class="o">(</span>3.1.1.0.8<span class="o">)</span> ruby-maven-libs <span class="o">(</span>3.1.1<span class="o">)</span> rvm <span class="o">(</span>1.11.3.9<span class="o">)</span> sprockets <span class="o">(</span>2.12.3<span class="o">)</span> sprockets-rails <span class="o">(</span>2.2.4<span class="o">)</span> thor <span class="o">(</span>0.19.1<span class="o">)</span> thread_safe <span class="o">(</span>0.3.4 java<span class="o">)</span> tilt <span class="o">(</span>1.4.1<span class="o">)</span> tzinfo <span class="o">(</span>1.2.2<span class="o">)</span> virtus <span class="o">(</span>1.0.4<span class="o">)</span> </code></pre> <p>========================问题解决========================================</p> <p>remove 掉 JRuby 以后重新安装 Jruby 然后再次 gem install rails，这一次安装成功，猜测是因为上次第一次 install rails 时，中途网络中断，造成了了一些什么问题</p> <pre class="highlight shell"><code>MBP:~ neo<span class="nv">$ </span>gem <span class="nb">install </span>rails Fetching: minitest-5.5.1.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed minitest-5.5.1 Fetching: tzinfo-1.2.2.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed tzinfo-1.2.2 Fetching: i18n-0.7.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed i18n-0.7.0 Fetching: activesupport-4.2.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed activesupport-4.2.0 Fetching: rails-deprecated_sanitizer-1.0.3.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed rails-deprecated_sanitizer-1.0.3 Fetching: nokogiri-1.6.6.2-java.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed nokogiri-1.6.6.2-java Fetching: rails-dom-testing-1.0.5.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed rails-dom-testing-1.0.5 Fetching: loofah-2.0.1.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed loofah-2.0.1 Fetching: rails-html-sanitizer-1.0.2.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed rails-html-sanitizer-1.0.2 Fetching: erubis-2.7.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed erubis-2.7.0 Fetching: builder-3.2.2.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed builder-3.2.2 Fetching: actionview-4.2.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed actionview-4.2.0 Fetching: rack-1.6.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed rack-1.6.0 Fetching: rack-test-0.6.3.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed rack-test-0.6.3 Fetching: actionpack-4.2.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed actionpack-4.2.0 Fetching: tilt-1.4.1.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed tilt-1.4.1 Fetching: multi_json-1.11.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed multi_json-1.11.0 Fetching: hike-1.2.3.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed hike-1.2.3 Fetching: sprockets-2.12.3.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed sprockets-2.12.3 Fetching: sprockets-rails-2.2.4.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed sprockets-rails-2.2.4 Fetching: thor-0.19.1.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed thor-0.19.1 Fetching: railties-4.2.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed railties-4.2.0 Fetching: globalid-0.3.3.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed globalid-0.3.3 Fetching: activejob-4.2.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed activejob-4.2.0 Fetching: mime-types-2.4.3.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed mime-types-2.4.3 Fetching: mail-2.6.3.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed mail-2.6.3 Fetching: actionmailer-4.2.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed actionmailer-4.2.0 Fetching: arel-6.0.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed arel-6.0.0 Fetching: activemodel-4.2.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed activemodel-4.2.0 Fetching: activerecord-4.2.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed activerecord-4.2.0 Fetching: rails-4.2.0.gem <span class="o">(</span>100%<span class="o">)</span> Successfully installed rails-4.2.0 31 gems installed MBP:~ neo<span class="nv">$ </span>which rails /Users/neo/.rvm/gems/jruby-1.7.19/bin/rails MBP:~ neo<span class="nv">$ </span>rails <span class="nt">-v</span> Rails 4.2.0 </code></pre> wen_pp Wed, 11 Mar 2015 16:54:04 +0800 https://ruby-china.org/topics/24597 https://ruby-china.org/topics/24597