語境:我該如何解析使用HtmlAgilityPack的<option>標籤的InnerText?
我想從這個Page here解析 「城市」。我已經設法模擬這個組合框的數據請求,這是一個Ajax調用。
提琴手請求:
POST http://www.telelistas.net/AjaxHandler.ashx HTTP/1.1
Host: www.telelistas.net
Connection: keep-alive
Content-Length: 106
Origin: http://www.telelistas.net
X-Requested-With: XMLHttpRequest
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.97 Safari/537.11
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Accept: */*
Referer: http://www.telelistas.net/
Accept-Encoding: gzip,deflate,sdch
Accept-Language: pt-BR,pt;q=0.8,en-US;q=0.6,en;q=0.4
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: cert_Origin=directo; [email protected]; auto=automatico=0; searchparameters=bottom=0&btnsite=0&email=&uf=rj&origem=0&nome=&pagina=1&codlogradouro=&predio=213&tiquete=0&localidadeendmap=&codbairro=0&pcount=25&estacionamento=0&letra=&top=&entrega=0&pchave=&info=&logradouro=rua+da+lapa&codtitulo=-1&chave=&zoom=&comercial=0&ddd=0&comib=0&btnemail=0&pgresultado=&localidade=&telefone=&manobrista=0&codlocalidade=21000&site=&cartoes=0&atividade=&bairro=&reserva=0&residencial=0; perfil=logged=1&iduser=2563063&[email protected]&usertype=2&specialsearch=3&siteusernome=BigDataCorp&siteuserdatanasc=15/01/1988&siteusersexo=M&siteuserlocalidade=21000&siteuseruf=RJ&siteuserddd=21&siteusertelefone=94118439&siteuserprofissao=4&siteuserrenda=5000&siteuserformacao=4&siteusernovidades=0&siteusernovidadesrevista=&siteusernovidadesparceiros=0&siteusercpf=10541308769&siteuseracesso=brasil&siteusercep=22631000&siteuseridade=24&siteuserparceiro=telelistas&siteuserconhecimento=2&siteuseroperadora=oi&siteuserurlorigem=http://www.telelistas.net/&siteuserdatacadastro=13/12/2012 11:45:00; __utma=70879631.392027796.1355939587.1356014801.1356021821.5; __utmb=70879631.1.10.1356021821; __utmc=70879631; __utmz=70879631.1355939587.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)
PostData : state=rj&style=busca_interna&selectedCity=21000&clientId=pch_localidade_select&method=GetSearchCitiesNamed
問題:
下面是該請求返回的字符串的一個片段:
<select name='pch_localidade_select' class='busca_interna' id='pch_localidade_select' tabindex="4"><option value="">Selecione</option><option selected value="21000">Rio de Janeiro</option><option value="21380">Abraão</option><option value="21001">Afonso Arinos</option><option value="21002">Agência Luterback</option><option value="21847">Agriões de Dentro</option>
什麼,我試圖做的,是到達選項標籤InnerText
(「里約熱內盧」,「Abraao」...),但由於某種奇怪的原因,InnerText
總是空,找到每個選項節點。
有這麼失敗的一些代碼片段:
// Iterating over nodes to build the dictionary
foreach (HtmlNode city in citiesNodes)
{
string key = city.InnerText;
string value = city.Attributes["value"].Value;
citiesHash.AddCity (key,value);
}
技術到位:
我使用HtmlAgilityPack支持XPath語法節點選擇,C#代碼和Fiddler2爲WebDebugging。
在此先感謝
這也爲我工作前只需使用
HtmlAgilityPack.HtmlNode.ElementsFlags.Remove("option");
,我應該刪除我的回答還是離開爲社會的未來使用這兩個選項? –我會離開它,但有時候人們不必要地低估了答案。所以這是你的選擇。 –