XML 文档选择 [英] XMLDocument Selection

问题描述

我的 XML 文档格式如下:

The XML document I have is the following format:

<response>
   <forecast>
      <txt_forecast>
         <forecastdays>
            <forecastday>
               <period>0</period>
               <fctext>Sunny</fctext>
            </forecastday>
            <forecastday>
               <period>1</period>
               <fctext>Cloudy></fctext>
            </forecastday>
         </forecastdays>
      </txt_forecast>
   </forecast>
</response>

我现在的代码是:

public String getcurrentForecast()
{
   XmlDocument doc = new XmlDocument();
   doc.Load("http://api.wunderground.com/api/74e1025b64f874f6/forecast/conditions/q/zmw:00000.1.95784.xml");
   XmlNode node = doc.DocumentElement.SelectSingleNode("/response/forecast/txt_forecast/forecastdays/forecastday");

我是 XML 阅读的新手，我花了 2 天时间试图理解来自各种来源的示例.我想为我的代码使用XMLDocument"属性.

I am new to XML reading, and I have spent 2 days trying to understand examples from various sources. I would like to use the 'XMLDocument' property for my code.

如何选择peroid 0"节点并获取fctext"文本?

How can I select the "peroid 0" node and get the "fctext" text please?

推荐答案

像这样:

    XmlDocument doc = new XmlDocument();
    doc.Load("http://api.wunderground.com/api/74e1025b64f874f6/forecast/conditions/q/zmw:00000.1.95784.xml");
    XmlNode node = doc.DocumentElement.SelectSingleNode("/response/forecast/txt_forecast/forecastdays/forecastday[period=0]/fcttext");

    String Forecast = node.InnerText;

[更新:] 这里有一个免费实用程序可以帮助您快速找出正确的 XPath 表达式:http://www.bubasoft.net/product/xpath-builder/

[Update:] There is a free utility here that helps you quickly figure out correct XPath expressions: http://www.bubasoft.net/product/xpath-builder/

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