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>

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

1. 使用Regex正则表达式匹配
2. 使用XElement类解析
3. 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);
                            }
                        }
                    }
                }
            }

Android 判断网络是否可用,布布扣,bubuko.com

Android 判断网络是否可用