Question

C# 解析xml 取出各个节点的值。

<?xml
version="1.0" encoding="utf-8" ?>

- <CityWeatherResponse>

<status>success</status>

<date>2014-05-03</date>

- <results>

<currentCity>濮阳</currentCity>

- <weather_data>

<date>周六(今天, 实时：17℃)</date>

<dayPictureUrl>http://api.map.baidu.com/images/weather/day/duoyun.png</dayPictureUrl>

<nightPictureUrl>http://api.map.baidu.com/images/weather/night/duoyun.png</nightPictureUrl>

<weather>多云</weather>

<wind>微风</wind>

<temperature>9℃</temperature>

<date>周日</date>

<dayPictureUrl>http://api.map.baidu.com/images/weather/day/qing.png</dayPictureUrl>

<nightPictureUrl>http://api.map.baidu.com/images/weather/night/qing.png</nightPictureUrl>

<weather>晴</weather>

<wind>微风</wind>

<temperature>22 ~ 7℃</temperature>

<date>周一</date>

<dayPictureUrl>http://api.map.baidu.com/images/weather/day/qing.png</dayPictureUrl>

<nightPictureUrl>http://api.map.baidu.com/images/weather/night/qing.png</nightPictureUrl>

<weather>晴</weather>

<wind>微风</wind>

<temperature>24 ~ 11℃</temperature>

<date>周二</date>

<dayPictureUrl>http://api.map.baidu.com/images/weather/day/duoyun.png</dayPictureUrl>

<nightPictureUrl>http://api.map.baidu.com/images/weather/night/qing.png</nightPictureUrl>

<weather>多云转晴</weather>

<wind>微风</wind>

<temperature>26 ~ 15℃</temperature>

</weather_data>

</results>

</CityWeatherResponse>

Answer 1

using System.Xml.Linq;
using System.IO;

string xml = @"<?xml 
version=""1.0"" encoding=""utf-8"" ?>
 <CityWeatherResponse>
<status>success</status>
<date>2014-05-03</date>
<results>
<currentCity>濮阳</currentCity>
<weather_data>
<date>周六(今天, 实时：17℃)</date>
<dayPictureUrl>http://api.map.baidu.com/images/weather/day/duoyun.png</dayPictureUrl>
<nightPictureUrl>http://api.map.baidu.com/images/weather/night/duoyun.png</nightPictureUrl>
<weather>多云</weather>
<wind>微风</wind>
<temperature>9℃</temperature>
<date>周日</date>
<dayPictureUrl>http://api.map.baidu.com/images/weather/day/qing.png</dayPictureUrl>
<nightPictureUrl>http://api.map.baidu.com/images/weather/night/qing.png</nightPictureUrl>
<weather>晴</weather>
<wind>微风</wind>
<temperature>22 ~ 7℃</temperature>
<date>周一</date>
<dayPictureUrl>http://api.map.baidu.com/images/weather/day/qing.png</dayPictureUrl>
<nightPictureUrl>http://api.map.baidu.com/images/weather/night/qing.png</nightPictureUrl>
<weather>晴</weather>
<wind>微风</wind>
<temperature>24 ~ 11℃</temperature>
<date>周二</date>
<dayPictureUrl>http://api.map.baidu.com/images/weather/day/duoyun.png</dayPictureUrl>
<nightPictureUrl>http://api.map.baidu.com/images/weather/night/qing.png</nightPictureUrl>
<weather>多云转晴</weather>
<wind>微风</wind>
<temperature>26 ~ 15℃</temperature>
  </weather_data>
  </results>
  </CityWeatherResponse>";
            XDocument xdoc = XDocument.Load(new StringReader(xml));
            XElement root = xdoc.Elements().First();
            XElement result = root.Element("results");
            XElement weather_data = result.Element("weather_data");
            //以下是各节点输出
            string status = root.Element("status").Value;
            string currentdate = root.Element("date").Value;
            string currentCity = result.Element("currentCity").Value;
            string date1 = weather_data.Element("date").Value;
            string dayPictureUrl1 = weather_data.Element("dayPictureUrl").Value;
            string nightPictureUrl = weather_data.Element("nightPictureUrl").Value;
            string weather1 = weather_data.Element("weather").Value;
            string wind1 = weather_data.Element("wind").Value;
            string temperature1 = weather_data.Element("temperature").Value;
            string date2 = weather_data.Elements("date").Skip(1).First().Value;
            string dayPictureUr2 = weather_data.Elements("dayPictureUrl").Skip(1).First().Value;
            string nightPictureUrl2 = weather_data.Elements("nightPictureUrl").Skip(1).First().Value;
            string weather2 = weather_data.Elements("weather").Skip(1).First().Value;
            string wind2 = weather_data.Elements("wind").Skip(1).First().Value;
            string temperature2 = weather_data.Elements("temperature").Skip(1).First().Value;
            string date3 = weather_data.Elements("date").Skip(2).First().Value;
            string dayPictureUrl3 = weather_data.Elements("dayPictureUrl").Skip(2).First().Value;
            string nightPictureUrl3 = weather_data.Elements("nightPictureUrl").Skip(2).First().Value;
            string weather3 = weather_data.Elements("weather").Skip(2).First().Value;
            string wind3 = weather_data.Elements("wind").Skip(2).First().Value;
            string temperature3 = weather_data.Elements("temperature").Skip(2).First().Value;
            string date4 = weather_data.Elements("date").Skip(3).First().Value;
            string dayPictureUrl4 = weather_data.Elements("dayPictureUrl").Skip(3).First().Value;
            string nightPictureUrl4 = weather_data.Elements("nightPictureUrl").Skip(3).First().Value;
            string weather4 = weather_data.Elements("weather").Skip(3).First().Value;
            string wind4 = weather_data.Elements("wind").Skip(3).First().Value;
            string temperature4 = weather_data.Elements("temperature").Skip(3).First().Value;
            Console.ReadKey();

Answer 2

(?<=<(?<key>\w+)>)[^<>]*(?=</\k<key>>) 正则表达式 可以匹配最小的单元
如<>111</>
得到111

Answer 3

你需要网络搜索一个xml读取的例子代码学习