如何使用XPATH訪問此輸入中的元素

Question

我正在使用XPath達到文本值，如輸入xml中所示。

 <stream> 
    <Services> 
    <ServicesSub> 
     <title>Parameter Calculations</title> 
     <list1 type="unordered-bullet"> 
      <item> 
       <premier> 
        <link Id="1222">Sheet Size</link> 
        <link Id="433">Hydraulic System</link> 
       </premier> 
      </item> 
      <item> 
       <premier> Review 
<link Id="342332">Diagnose</link> 

Rational Approach</premier> 
      </item> 
      <item> 
       <premier> 
        <link Id="222">Process</link> 
       </premier> 
      </item> 
     </list1> 
    </ServicesSub> 
    <ServicesSub> 
     <title>Parameter Set</title> 
     <table TableNumber="tab1" titlesource="no-title" frame="all" pgwide="page-wide"> 
      <tgroup cols="5" colsep="1" rowsep="1" align="left" charoff="50" char=""> 
       <colspec ColumnName="col1" colwidth="2.77in"/> 
       <colspec ColumnName="col2" colwidth="1.10in"/> 

        <thead valign="bottom"> 
        <row RowNumber="row1"> 
         <entry ColumnName="col1" morerows="0" rotate="0" valign="bottom" align="center"> 
          <ptxt>Price less</ptxt> 
         </entry> 
         <entry ColumnName="col2" morerows="0" rotate="0" valign="bottom" align="center"> 
          <ptxt>Price more</ptxt> 
         </entry> 
         <entry ColumnName="col3" morerows="0" rotate="0" valign="bottom" align="center"> 
          <ptxt>Open Price</ptxt> 
         </entry> 
        </row> 
       </thead> 
       <tbody valign="top"> 
        <row RowNumber="row1"> 
         <entry ColumnName="col1" morerows="0" rotate="0" valign="middle"> 
          <ptxt>Sheet</ptxt> 
         </entry> 
         <entry ColumnName="col2" morerows="0" rotate="0" valign="middle" align="center"> 
          <ptxt>Sheets1</ptxt> 
         </entry> 
        </row> 
        <row RowNumber="row2"> 
         <entry ColumnName="col1" morerows="0" rotate="0" valign="middle"> 
          <ptxt>Electric failure</ptxt> 
         </entry> 
         <entry ColumnName="col2" morerows="0" rotate="0" valign="middle" align="center"> 
          <ptxt>Elec fails</ptxt> 
         </entry> 
        </row> 
       </tbody> 
      </tgroup> 
     </table> 
    </ServicesSub> 
</Services> 
</stream> 

我只值位數的「價格更低」，「價格比較」，「開放價格」下的「參數設置」標題下THEAD - >列 - >條目。

我剛開始學習的XPath和XSLT ..請幫我fetchin這些值..

輸出預計：

<Value = "Price less"\> 
<Value = "Price more"\> 
<Value = "Open Price"\> 

我想直到這個...

/stream/Services/ServicesSub/title[text() = "Parameter Set" ]/following::* 

謝謝 Ramm

Answer 1

試試這個XPath應該返回所有匹配ptxt元素。

stream/Services/ServicesSub 
    [title[text() = 'Parameter Set']]/table/tgroup/thead/row/entry/ptxt 

例如，給出以下XSLT

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> 
    <xsl:output method="xml" indent="yes"/> 

    <xsl:template match="/"> 
     <xsl:apply-templates select="stream/Services/ServicesSub[title[text() = 'Parameter Set']]/table/tgroup/thead/row/entry/ptxt"/> 
    </xsl:template> 

    <xsl:template match="ptxt"> 
     <value> 
     <xsl:value-of select="." /> 
     </value> 
    </xsl:template> 
</xsl:stylesheet> 

當適用於您的輸入XML產生以下輸出，你有沒有擔心自己是否有重複提到

<value>Price less</value> 
<value>Price more</value> 
<value>Open Price</value> 

注價值觀，以及如何處理這些問題。如果您有重複項並且希望忽略它們，您需要閱讀關於分組（Muenchian在XSLT 1.0中的分組）。