任何人都有使用OMNIXML加载xml的示例代码 [英] Anyone has sample code to load an xml using OMNIXML

问题描述

我正在寻找一些实际的工作示例代码，使用普通的OmniXml（或OmniXmlUtils）单元读取XML。我不想使用TOmniXMLWriter类，如其他地方所述，但是想使用普通的Delphi代码加载一个xml文件。

I am looking for some actual working sample code to read an XML using the plain OmniXml (or OmniXmlUtils) unit. I don't want to use the TOmniXMLWriter class , as explained elsewhere , but want to load an xml file using plain Delphi code.

我搜索了OmniXml站点，但是样本

I searched the OmniXml site but the samples there are as good as non-existing.

提前感谢。

推荐答案

从文件或流或字符串加载文档

Loading the document from file or from stream or string

xml := CreateXMLDoc
xml.Load(FileName);
xml.LoadFromStream(XMLAsStream);
xml.LoadXML(XMLAsString)

选择单个节点（第5个小孩） p>

Selecting a single node (5th child):

MyNode := XML.ChildNodes.Item[4];
MyNode := XML.SelectSingleNode('Node[5]');

使用XPath选择

MyNode := XML.SelectSingleNode('/MyNodes/SpecificNodes/Node[5]');

选择节点收集

MyNodes := XML.SelectNodes('/MyNodes/SpecificNodes/Node');

如果您从 http://www.omnixml.com/download.html ，那里有一个名为demo的目录，其中包含所有演示文稿。他们将几乎解释你的一切。

If you downloaded from http://www.omnixml.com/download.html then there is a directory called demo inside, that contains all the demos. They will explain almost everything to you.

如果您决定在OmniXML之上使用SimpleStorage，请使用SimpleStorage向您展示您的上层示例。 p>

If you decide to use SimpleStorage on top of OmniXML, let me show you how your upper example would look, using SimpleStorage.

xml := StorageFromFile(rssFileName)
for channel in xml.Elements('channel') do
begin
  ListBox1.Items.Add('['+channel.Get('title')AsStringDef+']')
  for Item in channel.Elements('item') do
     ListBox1.Items.Add('  <'+ Item .Get('title')AsStringDef+'>')
 end; //for iChannel

没有看到有多少样板代码已经消失（21行代码缩小到7为相同的功能）。没有必要检查节点是否存在等等，并且枚举器有很大的帮助。我强烈建议您使用这种方法，因为它更清晰。

No do you see how much boilerplate code was gone (21 lines of code shrunk to 7 for the same functionality). There is no need to check if the node exists etc.. and enumerators help greatly. I strongly suggest you use this approach because it is so much clearer.

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