Ruby Web 服务 - xmlparser 问题
在尝试使用 Ruby 设置 Web 服务后，我遇到了 xmlparser 的问题。正如我所看到的 - 这是常见问题（例如 Ruby Soap4r wsdl2ruby.rb 错误），但它的解决方案，无论多么简单，对我来说并不成功。
我正在尝试运行取自 http://www.tutorialspoint.com/ruby/ruby_web_services 的代码.htm 几乎没有修正（信号字符串没有引号）。我首先安装了soap4r，
$ gem install soap4r --include-dependencies
并将xmlparser.rb:66修复为
c.to_s.downcase == name
代码：
require "soap/rpc/standaloneserver"
begin
class MyServer < SOAP::RPC::StandaloneServer
# Expose our services
def initialize(*args)
add_method(self, 'add', 'a', 'b')
add_method(self, 'div', 'a', 'b')
end
# Handler methods
def add(a, b)
return a + b
end
def div(a, b)
return a / b
end
end
server = MyServer.new("MyServer",
'urn:ruby:calculation', 'localhost', 8080)
trap('INT'){
server.shutdown
}
server.start
rescue => err
puts err.message
end
不幸的是，这仍然不起作用。它向我抛出一个错误：
undefined method `add_rpc_operation' for nil:NilClass
调用 add_method(self, ...) 后
After trying to set up webservice setup using Ruby I encountered problems with xmlparser. As I see - it is common problem (e.g. Ruby soap4r wsdl2ruby.rb errors), but it's solution, however simple, isn't successful to me.
I'm trying to run code taken from http://www.tutorialspoint.com/ruby/ruby_web_services.htm with little correction (signal string had no enclosing apostrophe). I installed firstly soap4r using
$ gem install soap4r --include-dependencies
and fixed xmlparser.rb:66 to
c.to_s.downcase == name
code:
require "soap/rpc/standaloneserver"
begin
class MyServer < SOAP::RPC::StandaloneServer
# Expose our services
def initialize(*args)
add_method(self, 'add', 'a', 'b')
add_method(self, 'div', 'a', 'b')
end
# Handler methods
def add(a, b)
return a + b
end
def div(a, b)
return a / b
end
end
server = MyServer.new("MyServer",
'urn:ruby:calculation', 'localhost', 8080)
trap('INT'){
server.shutdown
}
server.start
rescue => err
puts err.message
end
this unfortunately still isn't working. It throws me an error:
undefined method `add_rpc_operation' for nil:NilClass
after invoking add_method(self, ...)
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回答自己：这个片段不完整。缺少超级构造函数调用。添加：
将使一切正常工作
answering myself: this snippet is incomplete. There is lack for super constructor call. Adding:
will make it all work