android - Jsoup 和安卓

Question

我看过 JSoup Selector Overview文档，但我仍然遇到问题。我想从网页获取信息，这些信息存储在一个表中。一旦我检索到它，我想分成单独的行以便以后使用它；但我似乎做不到。

我的 JSoup 运行良好，但是当我尝试通过 Id 引用我想要的特定表时它不起作用，例如:

try 
                {
                    Document doc = Jsoup.connect( myHtml ).get();

                    Elements pTag = doc.select( "table#ctl00_ContentPlaceHolder1_tblPasses" );
                    //Elements links = doc.select( "a[href]" );
                    String pTagString = pTag.html();

                    // Set the textview to the results of the Jsoup query
                    setData( pTagString );

                    // Reset msg
                    msg = null;
                    msg = handler.obtainMessage( UPDATE_UI );
                    handler.sendMessage( msg );

                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

这是我试图到达的 HTML 代码段:

<table id="ctl00_ContentPlaceHolder1_tblPasses" class="standardTable" cellspacing="0" cellpadding="4" rules="cols" border="2" style="background-color:White;border-color:Gray;border-width:2px;border-style:Solid;border-collapse:collapse;">
<tr class="tablehead" style="border-width:0px;border-style:None;">
    <td valign="middle" rowspan="2">Date</td><td id="ctl00_ContentPlaceHolder1_MagHeader" valign="middle">Brightness</td><td align="center" colspan="3">Start</td><td align="center" colspan="3">Highest point</td><td align="center" colspan="3">End</td>
</tr><tr class="tablehead">
    <td id="ctl00_ContentPlaceHolder1_MagHeader2" align="center">(<a id="ctl00_ContentPlaceHolder1_linkMagnitude" title="show definition of this term" href="glossary.aspx?term=magnitude&amp;lat=54.5156&amp;lng=-6.06863&amp;loc=Unspecified&amp;alt=0&amp;tz=GMT">mag</a>)</td><td align="center">Time</td><td><a id="ctl00_ContentPlaceHolder1_linkAltitude" title="show definition of this term" href="glossary.aspx?term=altitude&amp;lat=54.5156&amp;lng=-6.06863&amp;loc=Unspecified&amp;alt=0&amp;tz=GMT">Alt.</a></td><td><a id="ctl00_ContentPlaceHolder1_linkAzimuth" title="show definition of this term" href="glossary.aspx?term=azimuth&amp;lat=54.5156&amp;lng=-6.06863&amp;loc=Unspecified&amp;alt=0&amp;tz=GMT">Az.</a></td><td align="center">Time</td><td>Alt.</td><td>Az.</td><td align="center">Time</td><td>Alt.</td><td>Az.</td>

这只是表格的一部分，还有很多，但现在我想查看这张表格，它是第一行。有什么想法吗？

更新

我试过这个:

Elements table = doc.select( "table#ctl00_ContentPlaceHolder1_tblPasses" );
Element first_Row = table.first();

//Elements links = doc.select( "a[href]" );
String first_Row_Strg = first_Row.html().toString();

// Set the textview to the results of the Jsoup query
setData( first_Row_Strg );

但它实际上返回整个表而不是第一行。我应该尝试瞄准表中行的实际标识符吗？如果是，你是怎么做到的？

Answer 1

换个思路，直接从parent中选择child

元素 first_row = doc.select("table#ctl00_ContentPlaceHolder1_tblPasses tr").first();