错误“；can'；t创建Java虚拟机&x201D；尝试使用rubyjavabridge（RJB）gem

我正在尝试实现RubyJavaBridge（RJB）gem来与JVM对话，以便运行OpenNLPGem。我已经在Windows8上安装并运行了Java。所有迹象，至少据我所知，都表明Java已经安装并可运行。但是，尝试使用RJB失败，并显示消息“无法创建JavaVM”。（在其他情况下，我有时会得到“Fiddle:Module的未定义方法`dlopen'，这也是无法识别的。）

我最初只是按照默认值安装JDK。由于我的64位系统，这个安装了64位Java。我不确定Ruby和RJB是否会讨论这个问题，所以我安装了32位JRE。但是，错误是相同的

我是否可以运行任何进一步的测试来确保JVM在Ruby之外工作

有人能告诉我运行Windows/Ruby/RJB/JVM可能需要做什么吗

谢谢

我使用BitNami Rubystack和Ruby 1.9.3p448运行Windows 8

根据testjava.jsp，Java似乎是可用的：

这是代码，包括我找到它的URL：

class FiddleTry

# http://devjete.wordpress.com/2011/01/31/installing-rjb-1-3-4-on-windows-7-32bit-wo-vc/
  require 'rjb'
  out = Rjb::import('java.lang.System').out  <== Line 5 is here
  out.print('Hello Rjb from ')
  p out._classname
end

调用链指向dl.rb、fiddle.rb和jar_loader.rb。jarloader.rb起始行43：

# Load Rjb and create Java VM.
def self.init_rjb
  ::Rjb::load(nil, self.jvm_args)
  set_java_logging if self.log_file
end

此时，我在创建JVM时遇到了相同的错误。所以，我又开始尝试运行RJB。错误链如下所示：

Fast Debugger (ruby-debug-ide 0.4.17, ruby-debug-base19x 0.11.30.pre12) listens on 127.0.0.1:59488
Uncaught exception: can't create Java VM
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/jar_loader.rb:45:in `load'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/jar_loader.rb:45:in `init_rjb'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/jar_loader.rb:38:in `load_jar_rjb'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/jar_loader.rb:27:in `load'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:63:in `load_jar'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:71:in `block in load_default_jars'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:68:in `each'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:68:in `load_default_jars'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:55:in `bind'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/open-nlp-0.1.4/lib/open-nlp.rb:14:in `load'
    C:/Users/Richard/RubymineProjects/Utilities/open_nlp_sample.rb:32:in `<class:OpenNlpSample>'
    C:/Users/Richard/RubymineProjects/Utilities/open_nlp_sample.rb:1:in `<top (required)>'

Fast调试器（ruby-debug-ide 0.4.17，ruby-debug-base19x 0.11.30.pre12）监听127.0.0.1:59488
未捕获异常：无法创建Java虚拟机
D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/jar_loader.rb:45:in'load'
D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/jar_loader.rb:45:in`init_rjb'
D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/jar\u loader.rb:38:in'load\u jar\u rjb'
D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/jar_loader.rb:27:in'load'
D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:63:in'load_-jar'
D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:71:in`block in load_default_jars'
D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:68:in'each'
D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:68:in'load\u default\u jars'
D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:55:in'bind'
D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/open-nlp-0.1.4/lib/open-nlp.rb:14:in'load'
C:/Users/Richard/RubymineProjects/Utilities/open\u nlp\u sample.rb:32:in`'
C:/Users/Richard/RubymineProjects/Utilities/open\u nlp\u sample.rb:1:in`'

首先，我需要卸载Java x64并安装JDK x586以获得32位支持

然后，设置

JAVA\u HOME

，如下所示：

JAVA\u HOME=C:\Program Files（x86）\JAVA\jdk1.7.0\u 40

并将

JAVA\u HOME

添加到我的路径：

%JAVA\u HOME%\bin；C:\ProgramFiles（x86）\Java\jre7\bin；

这解决了“无法创建JavaVM”的问题

设置

$DEBUG=false

，或注释掉该行，将消除所有其他消息。

$DEBUG

模式显示可能捕获并解决的错误消息，以便忽略它们

“无法创建JavaVM”问题解决后，所有其他错误消息都属于这种类型，因此都是虚假的

---

JetBrains对Rubymine的支持为我解决了这个问题。他们非常好，尤其是Serge，我推荐他们的产品是因为他们的支持。

开放nlp gem需要rjb吗？仔细考虑一下……添加了更多细节来说明我是如何做到这一点的，在上面的问题中。开放nlp最终调用了fiddler，最终调用了fiddlerrjb终止了Java VM的创建。我追溯到目前为止的问题，并认为如果我可以直接调试运行rjb，这将解决我的更高级别的问题。进一步的密集调试表明，rjb gem上出现了早期的loaderror，导致一系列相关错误，最终导致无法创建jvm。真正的问题被掩盖了。如果我能加载rjb gem，我可能会修复它。

=begin
  Examples

  Simple tokenizer
=end

  OpenNLP.load

# Load Rjb and create Java VM.
def self.init_rjb
  ::Rjb::load(nil, self.jvm_args)
  set_java_logging if self.log_file
end

Fast Debugger (ruby-debug-ide 0.4.17, ruby-debug-base19x 0.11.30.pre12) listens on 127.0.0.1:59488
Uncaught exception: can't create Java VM
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/jar_loader.rb:45:in `load'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/jar_loader.rb:45:in `init_rjb'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/jar_loader.rb:38:in `load_jar_rjb'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/jar_loader.rb:27:in `load'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:63:in `load_jar'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:71:in `block in load_default_jars'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:68:in `each'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:68:in `load_default_jars'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/bind-it-0.2.7/lib/bind-it/binding.rb:55:in `bind'
    D:/BitNami/rubystack-1.9.3-12/ruby/lib/ruby/gems/1.9.1/gems/open-nlp-0.1.4/lib/open-nlp.rb:14:in `load'
    C:/Users/Richard/RubymineProjects/Utilities/open_nlp_sample.rb:32:in `<class:OpenNlpSample>'
    C:/Users/Richard/RubymineProjects/Utilities/open_nlp_sample.rb:1:in `<top (required)>'