Rails XML解析

Question

任何人都可以告诉我如何解决这个问题.

<?xml version="1.0" encoding="utf-8"?>
<message>
  <param>
    <name>messageType</name>
    <value>SMS</value>
  </param>
  <param>
    <name>id</name>
    <value>xxxxxxxxxxxxxx</value>
  </param>
  <param>
    <name>source</name>
    <value>xxxxxxxxxxx</value>
  </param>
  <param>
    <name>target</name>
    <value>xxxxxxxxxxxxx</value>
  </param>
  <param>
    <name>msg</name>
    <value>xxxxxxxxxxxxx</value>
  </param>
  <param>
    <name>udh</name>
    <value></value>
  </param>
</message>

我无法控制这个xml,但我希望在保存到我的数据库之前我可以使参数看起来像这样

message"=>{"msg"=>"sampler", "id"=>"1", "target"=>"23123", "source"=>"312321312"}

这是我访问我的方法时收到的参数

message"=>{"param"=>[{"name"=>"id", "value"=>"2373084120100804002252"}, {"name"=>"messageType", "value"=>"SMS"}, {"name"=>"target", "value"=>"23730841"}, {"name"=>"source", "value"=>"09156490046"}, {"name"=>"msg", "value"=>"Hello world via iPhone"}, {"name"=>"udh", "value"=>nil}]}

Answer 1

有很多Ruby XML解析库.但是,如果您的XML很小,则可以使用ActiveSupport哈希扩展"from_xml":

Hash.from_xml(x)["message"]["param"].inject({}) do |result, elem| 
  result[elem["name"]] = elem["value"] 
  result 
end
# => {"msg"=>"xxxxxxxxxxxxx", "messageType"=>"SMS", "udh"=>nil, "id"=>"xxxxxxxxxxxxxx", "target"=>"xxxxxxxxxxxxx", "source"=>"xxxxxxxxxxx"}

=> {"msg"=>"xxxxxxxxxxxxx","messageType"=>"SMS","udh"=> nil,"id"=>"xxxxxxxxxxxxxx","target"=>"xxxxxxxxxxxxx","source"= > "XXXXXXXXXXX"}

Answer 2

您应该使用Nokogiri来解析xml.它非常快.