在rails中进行Xml解析(Xml parsing in rails)

在rails中进行Xml解析(Xml parsing in rails)

我有这个XML数据：

<?xml version="1.0" encoding="UTF-8"?> <responseParam> <RESULT>-1</RESULT> <ERROR_CODE>509</ERROR_CODE> </responseParam>

如何才能获取错误代码的值？ 我试过这个：

result = Net::HTTP.get(URI.parse(otpUrl)) data = Hash.from_xml(result) puts "#{data['ERROR_CODE']}" puts data[:ERROR_CODE]

只打印“数据”给我整个哈希。 我无法仅获得ERROR_CODE的值。

有帮助吗？

I have this XML data:

<?xml version="1.0" encoding="UTF-8"?> <responseParam> <RESULT>-1</RESULT> <ERROR_CODE>509</ERROR_CODE> </responseParam>

How can I fetch the value of error code only? I have tried this :

result = Net::HTTP.get(URI.parse(otpUrl)) data = Hash.from_xml(result) puts "#{data['ERROR_CODE']}" puts data[:ERROR_CODE]

printing only "data" gives me the whole hash. I am not able to get only the value of ERROR_CODE.

Any help ?

最满意答案

你可以在这里使用Nokigiri 。 假设这是你的error.xml

<?xml version="1.0" encoding="UTF-8"?> <responseParam> <RESULT>-1</RESULT> <ERROR_CODE>509</ERROR_CODE> </responseParam>

你可以这样做： -

@doc = Nokogiri::XML(File.open("error.xml")) @doc.xpath("//ERROR_CODE") will give you something like:- # => ["<ERROR_CODE>509</ERROR_CODE>]"

Node方法xpath和css实际上返回一个NodeSet ，它非常像一个array ，并包含来自文档的匹配节点。

you can use Nokigiri here. suppose this is your error.xml

<?xml version="1.0" encoding="UTF-8"?> <responseParam> <RESULT>-1</RESULT> <ERROR_CODE>509</ERROR_CODE> </responseParam>

you can do something like:-

@doc = Nokogiri::XML(File.open("error.xml")) @doc.xpath("//ERROR_CODE") will give you something like:- # => ["<ERROR_CODE>509</ERROR_CODE>]"

The Node methods xpath and css actually return a NodeSet, which acts very much like an array, and contains matching nodes from the document.