需求如下，
项目需要将一段xml字符串中的信息提取出来
<?xml version=""1.0"" encoding=""UTF-8"" ?>
<root>
<responseHeader>
<sequence>1397045886045</sequence>
<timestamp>2014-04-09 20:12:29</timestamp>
<version>1.0.0</version>
<returnCode>0</returnCode>
<errorMessage>成功</errorMessage>
</responseHeader>
<responsePage>
<hasNextPage>false</hasNextPage>
<hasPreviousPage>false</hasPreviousPage>
<lastPageNumber>1</lastPageNumber>
<totalCount>7</totalCount>
<thisPageFirstElementNumber>1</thisPageFirstElementNumber>
<thisPageLastElementNumber>7</thisPageLastElementNumber>
<nextPageNumber>2</nextPageNumber>
<previousPageNumber>0</previousPageNumber>
<pageSize>20</pageSize>
<thisPageNumber>1</thisPageNumber>
<firstResult>0</firstResult>
</responsePage>
<hotpointInfoList>
<hotpointInfo>
<name>南京北极阁一号</name>
<nasid>360721</nasid>
<address>北极山庄1号</address>
<province>250</province>
<cityCode>320100</cityCode>
<type>99</type>
<longitude>118.7869</longitude>
<latitude>32.0616</latitude>
<isRecommend>0</isRecommend>
</hotpointInfo>
<hotpointInfo>
<name>南京仙林大成名店动感地带旗舰营业厅</name>
<nasid>276495</nasid>
<address>仙林大成名店一层</address>
<province>250</province>
<cityCode>320100</cityCode>
<type>99</type>
<longitude>118.9169</longitude>
<latitude>32.1037</latitude>
<isRecommend>0</isRecommend>
</hotpointInfo>
<hotpointInfo>
<name>南京工业职业技术学院</name>
<nasid>373703</nasid>
<address>南京市羊山路一号</address>
<province>250</province>
<cityCode>320100</cityCode>
<type>99</type>
<longitude>118.9319</longitude>
<latitude>32.1241</latitude>
<isRecommend>0</isRecommend>
</hotpointInfo>
<hotpointInfo>
<name>南京星巴克凤凰书城店</name>
<nasid>257778</nasid>
<address>湖南路1号凤凰国际书城一层B铺位</address>
<province>250</province>
<cityCode>320100</cityCode>
<type>99</type>
<longitude>118.7785</longitude>
<latitude>32.0705</latitude>
<isRecommend>0</isRecommend>
</hotpointInfo>
</root>将所有的<hotpointInfo> Node 集合取出来
构成List<Dictionary<string,string>>的数据结构
我尝试使用了三种方法，实现这个需求
- 使用Regex正则表达式匹配
- 使用XElement类解析
- 使用XmlReader类解析
使用Regex正则表达式匹配
List<Dictionary<string, string>> list = new List<Dictionary<string, string>>();
MatchCollection hotspotMatches = Regex.Matches(s,
"<hotpointInfo>.*?<name>(?<name>.*?)</name>.*?<address>(?<address>.*?)</address>.*?<cityCode>(?<city>.*?)</cityCode>.*?<type>(?<hottype>.*?)</type>.*?<longitude>(?<longitude>.*?)</longitude>.*?<latitude>(?<latitude>.*?)</latitude>.*?(.*?<coverageArea>(?<coverarea>.*?)</coverageArea>)?.*?</hotpointInfo>",
RegexOptions.Singleline);
foreach (Match hotspotMatch in hotspotMatches)
{
Dictionary<string, string> dictionary = new Dictionary<string, string>();
dictionary["name"] = hotspotMatch.Groups["name"].Value;
dictionary["nasid"] = hotspotMatch.Groups["nasid"].Value;
dictionary["address"] = hotspotMatch.Groups["address"].Value;
dictionary["province"] = hotspotMatch.Groups["province"].Value;
dictionary["cityCode"] = hotspotMatch.Groups["cityCode"].Value;
dictionary["type"] = hotspotMatch.Groups["type"].Value;
dictionary["longitude"] = hotspotMatch.Groups["longitude"].Value;
dictionary["latitude"] = hotspotMatch.Groups["latitude"].Value;
dictionary["isRecommend"] = hotspotMatch.Groups["isRecommend"].Value;
list.Add(dictionary);
}使用XElement类解析
List<Dictionary<string, string>> list = new List<Dictionary<string, string>>();
XElement xElementFromString = XElement.Parse(s);
var v = from hotpointInfoElement in xElementFromString.Element("hotpointInfoList").Elements("hotpointInfo")
select hotpointInfoElement;
foreach (XElement xElement in v)
{
Dictionary<string, string> dictionary = new Dictionary<string, string>();
dictionary["name"] = xElement.Element("name").Value;
dictionary["nasid"] = xElement.Element("nasid").Value;
dictionary["address"] = xElement.Element("address").Value;
dictionary["province"] = xElement.Element("province").Value;
dictionary["cityCode"] = xElement.Element("cityCode").Value;
dictionary["type"] = xElement.Element("type").Value;
dictionary["longitude"] = xElement.Element("longitude").Value;
dictionary["latitude"] = xElement.Element("latitude").Value;
dictionary["isRecommend"] = xElement.Element("isRecommend").Value;
list.Add(dictionary);
}使用XmlReader类解析
List<Dictionary<string, string>> list = new List<Dictionary<string, string>>();
using (XmlReader reader = XmlReader.Create(new StringReader(s)))
{
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
if (reader.Name == "hotpointInfo")
{
XElement el = XNode.ReadFrom(reader) as XElement;
if (el != null)
{
Dictionary<string, string> dictionary = new Dictionary<string, string>();
dictionary["name"] = el.Element("name").Value;
dictionary["nasid"] = el.Element("nasid").Value;
dictionary["address"] = el.Element("address").Value;
dictionary["province"] = el.Element("province").Value;
dictionary["cityCode"] = el.Element("cityCode").Value;
dictionary["type"] = el.Element("type").Value;
dictionary["longitude"] = el.Element("longitude").Value;
dictionary["latitude"] = el.Element("latitude").Value;
dictionary["isRecommend"] = el.Element("isRecommend").Value;
list.Add(dictionary);
}
}
}
}
}