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無法在包含兩個冒號的css屬性中選擇nokogiri中的節點

2012-01-11 28 views
1

使用nokogiri嘗試選擇css值爲「WhoIsOnDutyTableLevel1：header：2」的節點時收到錯誤。我假設nokogiri無法處理兩個冒號。我有什麼選擇？我無法改變html的結構。無法在包含兩個冒號的css屬性中選擇nokogiri中的節點

這裏的HTML：

<html lang="en"><head> 
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type"> 
<link rel="stylesheet" type="text/css" href="stylesheets/forms.css"> 
<style type="text/css" media="screen" title="AlarmPoint"> 
       @import "stylesheets/AlarmPoint.css"; 
       </style> 
</head> 

<body><table id="WhoIsOnDutyTableLevel1" class="duty-report-level1"> 
<caption></caption> 
<thead> 
<tr> 
<th id="WhoIsOnDutyTableLevel1:header:1" class="duty-report-lt-header">Who's on duty for:&nbsp; 
       January 06, 2012 00:00 -0800</th> 
</tr> 
</thead> 
<tfoot></tfoot> 
<tbody> 
<tr> 
<td headers="WhoIsOnDutyTableLevel1:header:1"> 
<table id="WhoIsOnDutyTableLevel2" class="duty-report-level2"> 
<caption></caption> 
<thead> 
<tr> 
<th id="WhoIsOnDutyTableLevel1:header:1">Group Name</th><th id="WhoIsOnDutyTableLevel1:header:2">Group Time Zone</th><th id="WhoIsOnDutyTableLevel1:header:3">Default Devices</th><th id="WhoIsOnDutyTableLevel1:header:4">Supervisors</th> 
</tr> 
</thead> 
<tfoot></tfoot> 
<tbody> 
<tr> 
<td headers="WhoIsOnDutyTableLevel1:header:1"><a id="Support" href="/alarmpoint/GroupDetails.do;jsessionid=7pj06dj6krfs?_data=TJZuNquzHUiPj8lqyud7XvypLHHjUnT5bHn7hwtTf9Ei0C2PJ8QYcKIy8OkorCWT8HDTAzkon1ls%0D%0AefuHC1N%2F0SLQLY8nxBhwesdd7Zeg6NzvCfuzRqLg5g%3D%3D" name="Support" class="details">Support</a></td><td headers="WhoIsOnDutyTableLevel1:header:2" class="centered-text">US/Pacific</td><td headers="WhoIsOnDutyTableLevel1:header:3" class="centered-text"><img border="0" src="/static/images/icon_boolean_false.png" alt="No"></td><td headers="WhoIsOnDutyTableLevel1:header:4"> 
<values> 
</values><a id="mgr1" href="/alarmpoint/UserDevices.do;jsessionid=7pj06dj6krfs?_data=KpBkJeR08z4qZ%2FFdHH4hUAixAYz%2BqH6ZPkanPQ24VqQFpjRFPQiWigQHttJBTMFaCLEBjP6ofpk%2B%0D%0ARqc9DbhWpI1nHAqm8ex%2BxOmu7xYUNxRSU0XUo1xoRw%3D%3D" name="mgr1" class="details">Manager 1</a> 








</td> 
</tr> 
<tr> 
<td headers="WhoIsOnDutyTableLevel1:header:1" colspan="4" class="no-padding"> 
<table id="WhoIsOnDutyTableLevel3" class="duty-report-level3"> 
<caption></caption> 
<thead> 
<tr> 
<th id="WhoIsOnDutyTableLevel1:header:1" class="th-left">Blah_Blah1</th><th id="WhoIsOnDutyTableLevel1:header:2" class="">08:00 - 17:00 TU WE TH FR </th> 
</tr> 
</thead> 
<tfoot></tfoot> 
<tbody> 
<tr> 
<td headers="WhoIsOnDutyTableLevel1:header:1" colspan="2" class="no-padding"> 
<table id="WhoIsOnDutyTableLevel4" class="duty-report-level4"> 
<caption></caption> 
<thead> 
<tr> 
<th id="WhoIsOnDutyTableLevel1:header:1">Recipient</th><th id="WhoIsOnDutyTableLevel1:header:2">Category</th><th id="WhoIsOnDutyTableLevel1:header:3">Escalation</th> 
</tr> 
</thead> 
<tfoot></tfoot> 
<tbody> 
<tr id="205414"> 
<td headers="WhoIsOnDutyTableLevel1:header:1"><a id="user0" href="/alarmpoint/UserDevices.do;jsessionid=7pj06dj6krfs?_data=KpBkJeR08z6oL%2BaI47zI4gixAYz%2BqH6ZPkanPQ24VqQFpjRFPQiWigQHttJBTMFaCLEBjP6ofpk%2B%0D%0ARqc9DbhWpI1nHAqm8ex%2BxOmu7xYUNxRSU0XUo1xoRw%3D%3D" name="user0" class="details">User 0</a></td><td headers="WhoIsOnDutyTableLevel1:header:2">PERSON</td><td headers="WhoIsOnDutyTableLevel1:header:3">0</td> 
</tr> 
<tr id="207569"> 
<td headers="WhoIsOnDutyTableLevel1:header:1"><a id="user1" href="/alarmpoint/UserDevices.do;jsessionid=7pj06dj6krfs?_data=KpBkJeR08z4qZ%2FFdHH4hUAixAYz%2BqH6ZPkanPQ24VqQFpjRFPQiWigQHttJBTMFaCLEBjP6ofpk%2B%0D%0ARqc9DbhWpI1nHAqm8ex%2BxOmu7xYUNxRSU0XUo1xoRw%3D%3D" name="user1" class="details">User 1</a></td><td headers="WhoIsOnDutyTableLevel1:header:2">PERSON</td><td headers="WhoIsOnDutyTableLevel1:header:3">10</td> 
</tr> 
<tr id="209107"> 
<td headers="WhoIsOnDutyTableLevel1:header:1"><a id="user2" href="/alarmpoint/UserDevices.do;jsessionid=7pj06dj6krfs?_data=KpBkJeR08z6uKpyoDh%2Fz%2FQixAYz%2BqH6ZPkanPQ24VqQFpjRFPQiWigQHttJBTMFaCLEBjP6ofpk%2B%0D%0ARqc9DbhWpI1nHAqm8ex%2BxOmu7xYUNxRSU0XUo1xoRw%3D%3D" name="uer2" class="details">User 2</a></td><td headers="WhoIsOnDutyTableLevel1:header:2">PERSON</td><td headers="WhoIsOnDutyTableLevel1:header:3">25</td> 
</tr> 
</tbody> 
</table> 
</td> 
</tr> 
</tbody> 
</table> 
</td> 
</tr> 
<tr> 
<td headers="WhoIsOnDutyTableLevel1:header:1" colspan="4" class="no-padding"> 
<table id="WhoIsOnDutyTableLevel3" class="duty-report-level3"> 
<caption></caption> 
<thead> 
<tr> 
<th id="WhoIsOnDutyTableLevel1:header:1" class="th-left">Blah_Blah</th><th id="WhoIsOnDutyTableLevel1:header:2" class="">17:00 Lasting 15:00 WE TH FR </th> 
</tr> 
</thead> 
<tfoot></tfoot> 
<tbody> 
<tr> 
<td headers="WhoIsOnDutyTableLevel1:header:1" colspan="2" class="no-padding"> 
<table id="WhoIsOnDutyTableLevel4" class="duty-report-level4"> 
<caption></caption> 
<thead> 
<tr> 
<th id="WhoIsOnDutyTableLevel1:header:1">Recipient</th><th id="WhoIsOnDutyTableLevel1:header:2">Category</th><th id="WhoIsOnDutyTableLevel1:header:3">Escalation</th> 
</tr> 
</thead> 
<tfoot></tfoot> 
<tbody> 
<tr id="210855"> 
<td headers="WhoIsOnDutyTableLevel1:header:1"><a id="user0" href="/alarmpoint/UserDevices.do;jsessionid=7pj06dj6krfs?_data=KpBkJeR08z72pjQodq7P5gixAYz%2BqH6ZPkanPQ24VqQFpjRFPQiWigQHttJBTMFaCLEBjP6ofpk%2B%0D%0ARqc9DbhWpI1nHAqm8ex%2BxOmu7xYUNxRSU0XUo1xoRw%3D%3D" name="user0" class="details">User 0</a></td><td headers="WhoIsOnDutyTableLevel1:header:2">PERSON</td><td headers="WhoIsOnDutyTableLevel1:header:3">5</td> 
</tr> 
<tr id="210529"> 
<td headers="WhoIsOnDutyTableLevel1:header:1"><a id="user1" href="/alarmpoint/UserDevices.do;jsessionid=7pj06dj6krfs?_data=KpBkJeR08z6r1%2Fmnw2SZ2AixAYz%2BqH6ZPkanPQ24VqQFpjRFPQiWigQHttJBTMFaCLEBjP6ofpk%2B%0D%0ARqc9DbhWpI1nHAqm8ex%2BxOmu7xYUNxRSU0XUo1xoRw%3D%3D" name="user1" class="details">User 1</a></td><td headers="WhoIsOnDutyTableLevel1:header:2">PERSON</td><td headers="WhoIsOnDutyTableLevel1:header:3">10</td> 
</tr> 
<tr id="210337"> 
<td headers="WhoIsOnDutyTableLevel1:header:1"><a id="user2" href="/alarmpoint/UserDevices.do;jsessionid=7pj06dj6krfs?_data=KpBkJeR08z6Rwqu8vCtzBAixAYz%2BqH6ZPkanPQ24VqQFpjRFPQiWigQHttJBTMFaCLEBjP6ofpk%2B%0D%0ARqc9DbhWpI1nHAqm8ex%2BxOmu7xYUNxRSU0XUo1xoRw%3D%3D" name="user2" class="details">User 2</a></td><td headers="WhoIsOnDutyTableLevel1:header:2">PERSON</td><td headers="WhoIsOnDutyTableLevel1:header:3">15</td> 
</tr> 
<tr id="204675"> 
<td headers="WhoIsOnDutyTableLevel1:header:1"><a id="user3" href="/alarmpoint/UserDevices.do;jsessionid=7pj06dj6krfs?_data=KpBkJeR08z5oj5jdRJbzggixAYz%2BqH6ZPkanPQ24VqQFpjRFPQiWigQHttJBTMFaCLEBjP6ofpk%2B%0D%0ARqc9DbhWpI1nHAqm8ex%2BxOmu7xYUNxRSU0XUo1xoRw%3D%3D" name="user3" class="details">User 3</a></td><td headers="WhoIsOnDutyTableLevel1:header:2">PERSON</td><td headers="WhoIsOnDutyTableLevel1:header:3">20</td> 
</tr> 
<tr id="205555"> 
<td headers="WhoIsOnDutyTableLevel1:header:1"><a id="user4" href="/alarmpoint/UserDevices.do;jsessionid=7pj06dj6krfs?_data=KpBkJeR08z4G8e7%2FY9SHyQixAYz%2BqH6ZPkanPQ24VqQFpjRFPQiWigQHttJBTMFaCLEBjP6ofpk%2B%0D%0ARqc9DbhWpI1nHAqm8ex%2BxOmu7xYUNxRSU0XUo1xoRw%3D%3D" name="user4" class="details">User 4</a></td><td headers="WhoIsOnDutyTableLevel1:header:2">PERSON</td><td headers="WhoIsOnDutyTableLevel1:header:3">25</td> 
</tr> 
<tr id="205004"> 
<td headers="WhoIsOnDutyTableLevel1:header:1"><a id="user5" href="/alarmpoint/UserDevices.do;jsessionid=7pj06dj6krfs?_data=KpBkJeR08z5XHkcVAMfXqgixAYz%2BqH6ZPkanPQ24VqQFpjRFPQiWigQHttJBTMFaCLEBjP6ofpk%2B%0D%0ARqc9DbhWpI1nHAqm8ex%2BxOmu7xYUNxRSU0XUo1xoRw%3D%3D" name="user5" class="details">User 5</a></td><td headers="WhoIsOnDutyTableLevel1:header:2">PERSON</td><td headers="WhoIsOnDutyTableLevel1:header:3">30</td> 
</tr> 
<tr id="204718"> 
<td headers="WhoIsOnDutyTableLevel1:header:1"><a id="user6" href="/alarmpoint/GroupDetails.do;jsessionid=7pj06dj6krfs?_data=TJZuNquzHUiUNEK29yovHscXndexl2jCbHn7hwtTf9Ei0C2PJ8QYcKIy8OkorCWT8HDTAzkon1ls%0D%0AefuHC1N%2F0SLQLY8nxBhwesdd7Zeg6NzvCfuzRqLg5g%3D%3D" name="user6" class="details">User 6</a></td><td headers="WhoIsOnDutyTableLevel1:header:2">GROUP</td><td headers="WhoIsOnDutyTableLevel1:header:3">35</td> 
</tr> 
</tbody> 
</table> 
</td> 
</tr> 
</tbody> 
</table> 
</td> 
</tr> 
</tbody> 
</table> 
</td> 
</tr> 
</tbody> 
</table> 
</body></html>

我在我的軌道控制檯運行以下命令：

>> onDuty_userList = doc.at_xpath('//*[@id="WhoIsOnDutyTableLevel4"]/tbody/tr') 
=> #<Nokogiri::XML::Element:0x1b83804 name="tr" attributes=[#<Nokogiri::XML::Attr:0x1b83764 name="id" value="208894">] children=[#<Nokogiri::XML::Element:0x1b83174 name="td" attributes=[#<Nokogiri::XML::Attr:0x1b83110 name="headers" value="WhoIsOnDutyTableLevel1:header:1">] children=[#<Nokogiri::XML::Element:0x1b82b70 name="a" attributes=[#<Nokogiri::XML::Attr:0x1b82aa8 name="href" value="/alarmpoint/UserDevices.do;jsessionid=3pz7t91kle3?_data=KpBkJeR08z6mdgIY4sPrzAixAYz%2BqH6ZPkanPQ24VqQFpjRFPQiWigQHttJBTMFaCLEBjP6ofpk%2B%0D%0ARqc9DbhWpI1nHAqm8ex%2BxOmu7xYUNxRSU0XUo1xoRw%3D%3D">, #<Nokogiri::XML::Attr:0x1b82a94 name="name" value="xxx">, #<Nokogiri::XML::Attr:0x1b82a80 name="id" value="xxx">, #<Nokogiri::XML::Attr:0x1b82a6c name="class" value="details">] children=[#<Nokogiri::XML::Text:0x1b7b438 "\r\n            xxx, xxx (xxx)\r\n            ">]>]>, #<Nokogiri::XML::Element:0x1b7b104 name="td" attributes=[#<Nokogiri::XML::Attr:0x1b7b0a0 name="headers" value="WhoIsOnDutyTableLevel1:header:2">] children=[#<Nokogiri::XML::Text:0x1b7aba0 "PERSON">]>, #<Nokogiri::XML::Element:0x1b7a984 name="td" attributes=[#<Nokogiri::XML::Attr:0x1b7a90c name="headers" value="WhoIsOnDutyTableLevel1:header:3">] children=[#<Nokogiri::XML::Text:0x1b7a420 "0">]>, #<Nokogiri::XML::Text:0x1b7a1f0 "\r\n">]>

當我試着使用CSS選擇值：

>> onDuty_userList.css('WhoIsOnDutyTableLevel1:header:2') 
    Nokogiri::CSS::SyntaxError: unexpected '2' after ':' 
    from /home/dan/.rvm/gems/[email protected]/gems/nokogiri-1.5.0/lib/nokogiri/css/parser_extras.rb:87:in `on_error' 
    from /home/dan/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/racc/parser.rb:99:in `_racc_do_parse_c' 
    from /home/dan/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/racc/parser.rb:99:in `do_parse' 
    from /home/dan/.rvm/gems/[email protected]/gems/nokogiri-1.5.0/lib/nokogiri/css/parser_extras.rb:62:in `parse' 
    from /home/dan/.rvm/gems/[email protected]/gems/nokogiri-1.5.0/lib/nokogiri/css/parser_extras.rb:79:in `xpath_for' 
    from /home/dan/.rvm/gems/[email protected]/gems/nokogiri-1.5.0/lib/nokogiri/css.rb:23:in `xpath_for' 
    from /home/dan/.rvm/gems/[email protected]/gems/nokogiri-1.5.0/lib/nokogiri/xml/node.rb:211:in `block in css' 
    from /home/dan/.rvm/gems/[email protected]/gems/nokogiri-1.5.0/lib/nokogiri/xml/node.rb:210:in `map' 
    from /home/dan/.rvm/gems/[email protected]/gems/nokogiri-1.5.0/lib/nokogiri/xml/node.rb:210:in `css' 
    from (irb):129 
    from /home/dan/.rvm/rubies/ruby-1.9.2-p290/bin/irb:16:in `<main>'

來源

2012-01-11 sybind

+0

爲什麼用XPath選擇開始，然後切換到CSS？ – itdoesntwork 2012-01-11 13:32:36

+2

我不認爲這是一個有效的CSS選擇器。您能否向我們展示您正試圖識別的元素的HTML代碼段？ – 2012-01-11 14:20:27

+0

我之前使用過xpath，因爲我以前用過它，css似乎是更好的方法。 – sybind 2012-01-12 09:08:25

回答

0

您需要在＃前加上id。

這應該工作：

doc.css('#WhoIsOnDutyTableLevel1:header:2')

來源

2012-01-12 09:24:24

+0

nope，我仍然收到錯誤：>> onDuty_userList.css（'＃WhoIsOnDutyTableLevel1：header：2'） Nokogiri :: CSS :: SyntaxError：在'：'之後意外的'2' – sybind 2012-01-12 19:06:39

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