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我有一个简单的 Sinatra 应用程序，我将在 tomcat 中托管它作为战争。当我在tomcat中运行它并运行它时，一切正常。如果我在我的 warble 配置中设置 Ruby 1.9 标志

config.webxml.jruby.compat.version = "1.9"

然后战争没有运行，我在 tomcat 日志中收到此错误

INFO: An exception happened during JRuby-Rack startup
no such file to load -- mysinatraapp
--- System
jruby 1.6.5.1 (ruby-1.9.2-p136) (2011-12-27 1bf37c2) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_29) [darwin-x86_64-java]
Time: 2012-01-16 10:06:32 -0600
Server: Apache Tomcat/7.0.23
jruby.home: file:/apache-tomcat-7.0.23/webapps/ROOT/WEB-INF/lib/jruby-stdlib-1.6.5.1.jar!/META-INF/jruby.home

--- Context Init Parameters:
jruby.compat.version = 1.9
jruby.max.runtimes = 1
jruby.min.runtimes = 1
public.root = /
rack.env = production

--- Backtrace
LoadError: no such file to load -- mysinatraapp
        require at org/jruby/RubyKernel.java:1047
        require at file:/apache-tomcat-7.0.23/webapps/ROOT/WEB-INF/lib/jruby-stdlib-1.6.5.1.jar!/META-INF/jruby.home/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36
         (root) at /apache-tomcat-7.0.23/webapps/ROOT/WEB-INF/config.ru:2
  instance_eval at org/jruby/RubyBasicObject.java:1720
     initialize at file:/apache-tomcat-7.0.23/webapps/ROOT/WEB-INF/lib/jruby-rack-1.1.3.jar!/vendor/rack-1.3.6/rack/builder.rb:51
         (root) at /apache-tomcat-7.0.23/webapps/ROOT/WEB-INF/config.ru:1

mysinatraapp.rb 文件在战争中，所以我不明白为什么找不到它。该应用程序在 jruby 中从命令行运行时运行良好，所以我认为这不是我的代码和 1.9 的兼容性问题。即使只是从 web.xml 中删除这些行

<context-param>
<param-name>jruby.compat.version</param-name>
<param-value>1.9</param-value>
</context-param>

会让应用程序启动正常。

我的罐子的版本是 jruby-core-1.6.5.1.jar jruby-rack-1.1.3.jar jruby-stdlib-1.6.5.1.jar

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1 回答 1

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我认为这可以通过 1.8 和 1.9 之间加载路径行为的细微变化来解释（MRI 也是如此，而不仅仅是 JRuby）。见证：

$ jruby -v -rpp -e 'pp $LOAD_PATH'
jruby 1.7.0.dev (ruby-1.8.7-p357) (2012-01-12 0e83d96) (Java HotSpot(TM) Client VM 1.6.0_29) [darwin-i386-java]
["/Users/nicksieger/Projects/ruby/jruby/lib/ruby/site_ruby/1.8",
 "/Users/nicksieger/Projects/ruby/jruby/lib/ruby/shared",
 "/Users/nicksieger/Projects/ruby/jruby/lib/ruby/1.8",
 "."]

$ jruby -v --1.9 -rpp -e 'pp $LOAD_PATH'
jruby 1.7.0.dev (ruby-1.9.3-p6) (2012-01-12 0e83d96) (Java HotSpot(TM) Client VM 1.6.0_29) [darwin-i386-java]
["/Users/nicksieger/Projects/ruby/jruby/lib/ruby/site_ruby/1.9",
 "/Users/nicksieger/Projects/ruby/jruby/lib/ruby/shared",
 "/Users/nicksieger/Projects/ruby/jruby/lib/ruby/1.9"]

因此，您可能必须在 config.ru中显式添加'.'或添加到加载路径。$servlet_context.getRealPath("/WEB-INF")

于 2012-01-20T19:29:59.717 回答