Question

我知道标题可能很难理解。我将列出XML和XSLT，希望它会更清楚。

<?xml version="1.0"?>
<software_inventory>
  <software xmlns:xsi="Software.xsd">
    <title>Adobe Photoshop</title>
    <vendor>Adobe</vendor>
    <category>Graphics</category>
    <support_platforms>
      <Platform>Windows 7</Platform>
      <Platform>Windows 8</Platform>
      <Platform>Windows 8.1</Platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="4GB Ram 2GB Hard Drive" Software_Requiremnts="32/64 bit" Price="399">CS 5.5</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Winzip</title>
    <vendor>Winzip International</vendor>
    <category>Utility</category>
    <support_platforms>
      <platform>Windows Vista</platform>
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="2GB Ram 250MB Hard Drive" Software_Requiremnts="32/64 bit" Price="29.99">19</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Office 365</title>
    <vendor>Microsoft</vendor>
    <category>Productivity</category>
    <support_platforms>
      <platform>Windows Vista</platform>
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="4GB Ram 2GB Hard Drive" Software_Requiremnts="32/64 bit" Price="99">Office 365</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Visual Studio</title>
    <vendor>Microsoft</vendor>
    <category>Development</category>
    <support_platforms>      
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="4GB Ram 2GB Hard Drive" Software_Requiremnts="32/64 bit" Price="1199">2013</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Google Chrome</title>
    <vendor>Google</vendor>
    <category>Productivity</category>
    <support_platforms>
      <platforms>Windows Vista</platforms>
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="1GB Ram 250MB Hard Drive" Software_Requiremnts="32/64 bit" Price="0">23</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Microsoft SQL Server 2012</title>
    <vendor>Microsoft</vendor>
    <category>DBMS</category>
    <support_platforms>      
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
      <platform>Windows Server 2012</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="4GB Ram 4GB Hard Drive" Software_Requiremnts="64 bit" Price="3990">2012</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Microsoft Paint</title>
    <vendor>Microsoft</vendor>
    <category>Graphics</category>
    <support_platforms>
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
      <platform>Linux</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="16GB Ram 1TB Hard Drive" Software_Requiremnts="32/64 bit" Price="1000000">22</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Notepad</title>
    <vendor>Microsoft</vendor>
    <category>Development</category>
    <support_platforms>
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="32GB Ram 500MB Hard Drive" Software_Requiremnts="32/64 bit" Price="500000">3</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Oracle Database</title>
    <vendor>Oracle</vendor>
    <category>DBMS</category>
    <support_platforms>
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
      <platform>Windows Server 2012</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="8GB Ram 4GB Hard Drive" Software_Requiremnts="64 bit" Price="4000">Enterprise Edition</Version>
      <Version Hardware_Requirements="8GB Ram 3GB Hard Drive" Software_Requiremnts="64 bit" Price="3000">Standard Edition</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Adobe Dreamweaver</title>
    <vendor>Adobe</vendor>
    <category>Development</category>
    <support_platforms>
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="2GB Ram 500MB Hard Drive" Software_Requiremnts="32/64 bit" Price="299">CS5</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Adobe Fireworks</title>
    <vendor>Adobe</vendor>
    <category>Graphics</category>
    <support_platforms>
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="2GB Ram 500MB Hard Drive" Software_Requiremnts="32/64 bit" Price="399">CS5</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Adobe Flash</title>
    <vendor>Adobe</vendor>
    <category>Development</category>
    <support_platforms>
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="4GB Ram 1GB Hard Drive" Software_Requiremnts="32/64 bit" Price="499">CS5</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Adobe Illustrator</title>
    <vendor>Adobe</vendor>
    <category>Development</category>
    <support_platforms>
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="4GB Ram 500MB Hard Drive" Software_Requiremnts="32/64 bit" Price="499">CS5</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Google Earth Pro</title>
    <vendor>Google</vendor>
    <category>Productivity</category>
    <support_platforms>
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="4GB Ram 500MB Hard Drive" Software_Requiremnts="32/64 bit" Price="999">14</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Eclipse</title>
    <vendor>The Eclipse Foundation</vendor>
    <category>Development</category>
    <support_platforms>
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="4GB Ram 500MB Hard Drive" Software_Requiremnts="32/64 bit" Price="0">12</Version>
    </Approved_Versions>
  </software>
  <software>
    <title>Candy Crush Saga</title>
    <vendor>King.com ltd.</vendor>
    <category>Productivity</category>
    <support_platforms>
      <platform>Windows 7</platform>
      <platform>Windows 8</platform>
      <platform>Windows 8.1</platform>
    </support_platforms>
    <Approved_Versions>
      <Version Hardware_Requirements="32GB Ram 500GB Hard Drive" Software_Requiremnts="32/64 bit" Price="2000000">99</Version>
    </Approved_Versions>
  </software>
</software_inventory>

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl">
    <xsl:output method="html"/>
    <xsl:template match="/" >
      <html>
        <head>
          <title>Software</title>
        </head>
        <body>
          <h1>Software Titles for each category, sorted by price</h1>          
          <table border="1">
            <tr>
              <th>Software Title</th>
              <th>Category</th>
              <th>Price</th>              
            </tr>
            <xsl:for-each select="software_inventory/software">
              <xsl:sort select="category"/>
              <xsl:sort select="Approved_Versions/Version/@Price" data-type="number"/>              
              <tr>
                <td>
                  <xsl:value-of select="title"/>
                </td>
                <td>
                  <xsl:value-of select="category"/>
                </td>
                <td>$
                  <xsl:value-of select="Approved_Versions/Version/@Price"/>
                </td>                
              </tr>
            </xsl:for-each>
          </table>
          <h1>Software Titles for each operating system, sorted by category</h1>
          <table border="1">
            <tr>
              <th>Software Title</th>
              <th>Operating System</th>
              <th>Category</th>
            </tr>
            <xsl:for-each select="software_inventory/software">              
              <xsl:sort select="category"/>
              <tr>
                <td>
                  <xsl:value-of select="title"/>
                </td>                
                <td>  
                  <xsl:for-each select="support_platforms/platform">                    
                  <xsl:value-of select="."/>,
                    <xsl:text>&#xA;&#xD;</xsl:text>                    
                    </xsl:for-each>
                </td>                
                <td>                 
                  <xsl:value-of select="category"/>
                </td>
              </tr>
            </xsl:for-each>
          </table>            
        </body>
      </html>
        
    </xsl:template>
</xsl:stylesheet>

enter image description here

请看一下图片。您将看到平台永远不会添加到Adobe Photoshop的操作系统单元中。恰好，Adobe Photoshop位于software_inventory节点下的列表顶部。我不知道是不是这个原因。我尝试单步执行代码，它从不选择Adobe Photoshop的平台。有谁知道为什么会发生这种情况？我该怎么做才能解决它？

谢谢，大卫

Answer 1

这是因为Adobe Photoshop的元素是

<Platform></Platform>

检查platform时

。这是区分大小写的，请使用

<platform>Windows 7</platform>

代替。

XSLT没有选择某些节点组（只有第一个兄弟节点？）

1 个答案: