我试图在我的铁路项目中使用SOAP4R和JIRA4R（Ruby版本1.9.3）
在Gemfile中我有：
gem 'soap4r', :git => 'git://github.com/felipec/soap4r.git'
gem 'jira4r-jh'
当我尝试在模型中运行
时require "jira4r/jira-tool"
model Mymodel
def mydef
jira = Jira4R::JiraTool.new(2, "http://my.website.com/")
jira.login("test@test.com","password")
end
end
我有一个错误：
uninitialized constant REXML::Element
rubyjedi-soap4r (1.5.8.01) lib/soap/mapping/mapping.rb:129:in `_obj2soap'
rubyjedi-soap4r (1.5.8.01) lib/soap/mapping/mapping.rb:54:in `block (2 levels) in objs2soap'
rubyjedi-soap4r (1.5.8.01) lib/soap/mapping/mapping.rb:52:in `upto'
rubyjedi-soap4r (1.5.8.01) lib/soap/mapping/mapping.rb:52:in `block in objs2soap'
rubyjedi-soap4r (1.5.8.01) lib/soap/mapping/mapping.rb:560:in `block in protect_mapping'
rubyjedi-soap4r (1.5.8.01) lib/soap/mapping/mapping.rb:533:in `protect_threadvars'
rubyjedi-soap4r (1.5.8.01) lib/soap/mapping/mapping.rb:549:in `protect_mapping'
rubyjedi-soap4r (1.5.8.01) lib/soap/mapping/mapping.rb:51:in `objs2soap'
rubyjedi-soap4r (1.5.8.01) lib/soap/rpc/proxy.rb:475:in `request_rpc_enc'
rubyjedi-soap4r (1.5.8.01) lib/soap/rpc/proxy.rb:457:in `request_rpc'
rubyjedi-soap4r (1.5.8.01) lib/soap/rpc/proxy.rb:412:in `request_body'
rubyjedi-soap4r (1.5.8.01) lib/soap/rpc/proxy.rb:127:in `call'
rubyjedi-soap4r (1.5.8.01) lib/soap/rpc/driver.rb:151:in `call'
但是，如果我在独立的非轨道Ruby项目中运行相同的代码，则可以正常工作。
我该如何修复？
通过添加
修复require 'rexml/document'