我曾与ruby和ROR合作,但这个新项目要求我使用jruby.我得到了文档广告,它要求我安装jgem安装黄瓜,等..
我在Ubuntu 10.10上这样做
我不明白jgem部分.
我做了一些研究并试图通过以下方式安装它:
jruby -S gem install cucumber
得到了输出:
JRuby limited openssl loaded. gem install jruby-openssl for full support.
http://jruby.kenai.com/pages/JRuby_Builtin_OpenSSL
ERROR: While executing gem ... (SystemCallError)
Unknown error - mkdir failed
我尝试安装:gem install jruby-openssl
并得到了相同的结果
我已经安装了RVM,然后安装了Jruby,这是我输入的版本:jruby -v:
jruby 1.6.5.1(ruby-1.8.7-p330)(2011-12-27 1bf37c2)(Java HotSpot(TM)Client VM 1.7.0_02)[linux-i386-java]
问题是我无法安装therubyracer gem,当我尝试通过jruby -S gem install therubyracer安装时,我得到了这个:
/usr/local/rvm/rubies/jruby-1.6.5.1/bin/jruby extconf.rb
WARNING: JRuby does not support native extensions or the `mkmf' library very we$
Check http://kenai.com/projects/jruby/pages/Home for alternatives.
Checking for Python...Unable to build libv8: Python not found!
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include …在Ubuntu上安装JRuby 1.6.7和Rails 3的博客或教程？
我有Windows 7企业版,我正在尝试运行JRuby.我为Ruby(1.9.3),Java(jdk - 1.6.7)和JRuby(1.7preview)设置了我的环境变量.我有一个网络驱动器,但我创建了一个HOME系统变量似乎正在工作,因为我可以成功下载Ruby和JRuby的宝石,并将它们保存到我的本地驱动器.
当我尝试启动浏览器(即firefox,chrome)时,似乎挂起了JRuby,但不是Ruby.以下是JRuby尝试执行10分钟后的跟踪:
irb(main):003:0> require 'rubygems'
=> false
irb(main):004:0> require 'watir-webdriver'
=> true
irb(main):005:0> b = Watir::Browser.new :ie
IRB::Abort: abort then interrupt! *<--Note I killed the process after 10 minutes*
from c:/Ruby/jruby-bin-1.7.0.preview1/jruby-1.7.0.preview1/lib/ruby/gems
/shared/gems/selenium-webdriver-2.22.2/lib/selenium/webdriver/common
/port_prober.rb:24:in `free?'
from c:/Ruby/jruby-bin-1.7.0.preview1/jruby-1.7.0.preview1/lib/ruby/gems
/shared/gems/selenium-webdriver-2.22.2/lib/selenium/webdriver/common
/port_prober.rb:5:in `above'
from c:/Ruby/jruby-bin-1.7.0.preview1/jruby-1.7.0.preview1/lib/ruby/gems
/shared/gems/selenium-webdriver-2.22.2/lib/selenium/webdriver/ie/bridge.rb:17:in
`initialize'
from org/jruby/RubyHash.java:1429:in `delete'
from c:/Ruby/jruby-bin-1.7.0.preview1/jruby-1.7.0.preview1/lib/ruby/gems
/shared/gems/selenium-webdriver-2.22.2/lib/selenium/webdriver/ie/bridge.rb:17:in
`initialize'
from c:/Ruby/jruby-bin-1.7.0.preview1/jruby-1.7.0.preview1/lib/ruby/gems
/shared/gems/selenium-webdriver-2.22.2/lib/selenium/webdriver/common/driver.rb:3
5:in `for'
from c:/Ruby/jruby-bin-1.7.0.preview1/jruby-1.7.0.preview1/lib/ruby/gems
/shared/gems/selenium-webdriver-2.22.2/lib/selenium/webdriver.rb:65:in `for'
from c:/Ruby/jruby-bin-1.7.0.preview1/jruby-1.7.0.preview1/lib/ruby/gems
/shared/gems/watir-webdriver-0.6.1/lib/watir-webdriver/browser.rb:35:in
`initialize'
from (irb):5:in `evaluate'
from org/jruby/RubyKernel.java:1037:in `eval'
from org/jruby/RubyKernel.java:1353:in `loop'
from org/jruby/RubyKernel.java:1146:in `catch' …我想我发现了一个有关扭矩盒的错误.出于某种原因,如果我"宝石安装扭矩盒"然后在我的Gemfile中添加"宝石'扭矩盒'"线,"torquebox env"就会停止正常工作.这很容易重现,所以如果有人知道发生了什么,请告诉我:
要重现该错误,让我们创建一个新的gemset并安装torquebox-server
$ rvm use jruby-1.6.7.2
$ rvm gemset create test
$ mkdir torquetest
$ cd torquetest
$ rvm use jruby-1.6.7.2@test
让我暂停一下,告诉你我的jruby-1.6.7.2@global中的内容,如果重要的话:
$ ls ~/.rvm/gems/jruby-1.6.7.2@global/gems
total 0
drwxr-xr-x 9 jstokes 306 Aug 9 16:26 ./
drwxr-xr-x 7 jstokes 238 Aug 9 16:25 ../
drwxr-xr-x 5 jstokes 170 Aug 9 16:25 bouncy-castle-java-1.5.0146.1/
drwxr-xr-x 15 jstokes 510 Aug 9 16:26 bundler-1.1.5/
drwxr-xr-x 34 jstokes 1156 Aug 9 16:25 jruby-launcher-1.0.15-java/
drwxr-xr-x 10 jstokes 340 Aug 9 16:25 jruby-openssl-0.7.7/
drwxr-xr-x 13 jstokes 442 …我正在使用JRuby 1.7.2,以及DataMapper,我收到一个错误,我找不到答案.
我只是测试DataMapper和MySQL 5.5,看看它是否会在我构建时运行良好.这是我正在测试的文件:
require "data_mapper"
require "keys"
DataMapper.setup(:default, "mysql://#{$user}:#{$pass}@localhost/test_db")
当我运行这个时,我得到错误:
NameError: cannot load Java class com.mysql.jdbc.Driver
它指向DataMapper.setup行.
我的Gemfile应该没问题:
source :rubygems
gem "sinatra"
gem "trinidad"
gem "data_mapper"
# do a `sudo apt-get install libmysqlclient-dev` first
gem "dm-mysql-adapter"
gem "jdbc-mysql"
有什么我想念的吗？我已经在本地设置了用户/传递的MySQL.
演示脚本(由新的应用程序生成器生成的脚本)在我的SGS2上启动大约需要6秒钟.这是一个jRuby税还是我没有正确安装(我假设rake install的方式)？
如果它只是它的方式,那么我想知道一个应用程序是否比其竞争对手长6秒的旋转器对任何人都有任何价值(真正的问题 - 不是拖钓).
当我在我的(Rails)应用程序上运行jruby-lint时,我会得到以下几个:
非本地运营商分配不保证是原子的
哪个代码看起来像这样:
def foo
@foo ||= Foo.new
end
或这个:
config.assets.precompile += %w( email/email.css )
其中一些在app /中,其中一些在config /中.我猜这个警告只与左边的东西是一个数组的情况有关,要修复它我应该用Threadsafe::Array吗？
我需要改变哪些类型的这些东西？
注意:下面显示的代码摘要不是我遇到问题的代码的精华.我已经在这里留下了这个原始摘要,因为其他人已经回答了,但实际的代码显示在我在下面提供的答案中.
我无法将其隔离到一个小的失败的测试用例,但我使用以下一般构造失败了:
class Foo
@mutex = Mutex.new
....
def self.bar
@mutex.synchronize { ... }
end
end
如果我创建多个线程调用Foo.bar,有时@mutex会评估为nil在bar.如果我使用常量(例如MUTEX)而不是实例变量,我没有这个问题.
我不知道它是否重要,但我在一台多核机器上运行JRuby.
我很感激如何解决问题的任何解释或帮助.
更新:我认为这与自动加载有关.使用Rails,我能够使用以下foo.rbRails自动加载目录中的以下内容重现类似的问题:
class Foo
@mutex = Mutex.new
def self.bar
@mutex.synchronize {}
end
end
当我在Rails控制台中执行以下操作时:
1.upto(4).map { Thread.new { Foo.bar }}.map(&:join)
我收到以下错误:
RuntimeError: Circular dependency detected while autoloading constant Foo
from /Users/palfvin/.rvm/gems/jruby-1.7.10@javlats/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:461:in `load_missing_constant'
from /Users/palfvin/.rvm/gems/jruby-1.7.10@javlats/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:184:in `const_missing'
from (irb):1:in `evaluate'
这个行为在CRuby(MRI Ruby)中是相同的.
我已经下载了最新的logstash 1.4,当我使用以下配置运行它时:
input {
eventlog {
}
}
output { stdout {} }
我收到此错误:
D:\logstash-1.4.0\bin>logstash agent -f simpleConfig.config -l logs.log
Sending logstash logs to agent.log.
?[33mUsing milestone 2 input plugin 'eventlog'. This plugin should be stable, bu
t if you see strange behavior, please let us know! For more information on plugi
n milestones, see http://logstash.net/docs/1.4.0/plugin-milestones {:level=>:war
n}?[0m
LoadError: no such file to load -- jruby-win32ole
require at org/jruby/RubyKernel.java:1085
require at file:/D:/logstash-1.4.0/vendor/jar/jruby-complete-1
.7.11.jar!/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.
rb:55
require at file:/D:/logstash-1.4.0/vendor/jar/jruby-complete-1
.7.11.jar!/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.
rb:53
require …