在 XSLT 中按月和年对 XML 节点进行分组答案

【问题标题】：Grouping XML nodes by Month and Year in XSLT在 XSLT 中按月和年对 XML 节点进行分组
【发布时间】：2010-10-11 22:08:39
【问题描述】：

更新

我想向提供答案的人道歉，我似乎造成了各种混乱。为了避免使事情进一步复杂化，我删除了以前的代码并添加了新信息。继续阅读...

我正在 Umbraco 开发一个自定义博客。 Umbraco 将 XML 作为输出，然后使用 XSLT 读取。

XML的结构如下

博客
- 博客中心
  - 房间
    - 博文
    - 博文
    - 博文
  - 房间
    - 博文
- 博客中心
  - 房间
    - 博文

这是 XML 代码，我已对其进行了很多清理以使其至少具有一定的可读性。

<Blog id="1078" parentID="1049" level="2" writerID="0" creatorID="0" nodeType="1073" template="1089" sortOrder="7" createDate="2010-09-27T14:11:04" updateDate="2010-10-12T16:59:12" nodeName="Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078" isDoc="">
    <newPageTitle>The Lorem Ipsum Blog</newPageTitle>
    <BlogCentre id="1079" parentID="1078" level="3" writerID="0" creatorID="0" nodeType="1075" template="1076" sortOrder="1" createDate="2010-09-27T14:11:49" updateDate="2010-10-07T14:43:13" nodeName="Blog Centre 1" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079" isDoc="">
        <Room id="1081" parentID="1079" level="4" writerID="0" creatorID="0" nodeType="1077" template="0" sortOrder="1" createDate="2010-09-27T14:12:26" updateDate="2010-10-07T14:43:06" nodeName="Room 10" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081" isDoc="">
            <BlogPost id="1175" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1192" sortOrder="1" createDate="2010-10-07T14:51:48" updateDate="2010-10-12T21:30:53" nodeName="The first ever Blog post" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1175" isDoc="">
                <topicTitle>The first ever blog</topicTitle>
            </BlogPost>
            <BlogPost id="1180" parentID="1081" level="5" writerID="0" creatorID="3" nodeType="1087" template="1089" sortOrder="2" createDate="2010-10-08T15:52:20" updateDate="2010-10-12T16:57:00" nodeName="asdasd" writerName="Administrator" creatorName="ZX" path="-1,1049,1078,1079,1081,1180" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
            <BlogPost id="1181" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="3" createDate="2010-10-08T17:50:19" updateDate="2010-10-12T11:40:37" nodeName="condimentum" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1181" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-09-01T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1194" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="4" createDate="2010-10-12T11:41:50" updateDate="2010-10-12T11:42:37" nodeName="Nam augue" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1194" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-08-05T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1195" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="5" createDate="2010-10-12T11:42:15" updateDate="2010-10-12T11:42:25" nodeName="consequat nunc" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1195" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-08-12T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1196" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="6" createDate="2010-10-12T12:05:57" updateDate="2010-10-12T12:08:40" nodeName="cursus congue" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1196" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2009-10-22T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1197" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="7" createDate="2010-10-12T12:08:54" updateDate="2010-10-12T12:09:24" nodeName="inceptos" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1197" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2009-11-19T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1198" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="8" createDate="2010-10-12T12:09:45" updateDate="2010-10-12T12:10:13" nodeName="inceptos himenaeos" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1198" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2009-12-16T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1199" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="9" createDate="2010-10-12T12:10:29" updateDate="2010-10-12T12:10:56" nodeName="consequat" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1199" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-01-13T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1200" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="10" createDate="2010-10-12T12:11:08" updateDate="2010-10-12T12:11:35" nodeName="himenaeos" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1200" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-02-09T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1201" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="11" createDate="2010-10-12T12:11:45" updateDate="2010-10-12T12:12:35" nodeName="cursus congue" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1201" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-04-22T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1202" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="12" createDate="2010-10-12T12:12:18" updateDate="2010-10-12T12:12:45" nodeName="pharetra" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1202" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-03-09T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1203" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="13" createDate="2010-10-12T12:13:05" updateDate="2010-10-12T12:13:27" nodeName="inceptos himenaeos" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1203" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-05-26T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1204" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="14" createDate="2010-10-12T12:13:36" updateDate="2010-10-12T12:13:56" nodeName="pharetra" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1204" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-06-11T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1205" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="15" createDate="2010-10-12T12:14:06" updateDate="2010-10-12T12:14:41" nodeName="Fusce augue" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1205" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-07-08T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1206" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="16" createDate="2010-10-12T12:14:52" updateDate="2010-10-12T12:15:19" nodeName="pharetra et fermentum" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1206" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-08-09T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1207" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="17" createDate="2010-10-12T12:15:31" updateDate="2010-10-12T12:15:51" nodeName="Fusce augue purus" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1207" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-09-14T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1208" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="18" createDate="2010-10-12T12:16:25" updateDate="2010-10-12T12:16:45" nodeName="Class aptent taciti" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1208" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-06-04T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1209" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="19" createDate="2010-10-12T12:17:01" updateDate="2010-10-12T12:17:29" nodeName="Class aptent" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1209" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-06-21T00:00:00</archiveUnder>
            </BlogPost>
        </Room>
        <Room id="1082" parentID="1079" level="4" writerID="0" creatorID="0" nodeType="1077" template="0" sortOrder="2" createDate="2010-09-27T14:12:33" updateDate="2010-10-07T14:43:09" nodeName="Test Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1082" isDoc="">
            <BlogPost id="1182" parentID="1082" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:51:19" updateDate="2010-10-08T17:51:58" nodeName="Test Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1082,1182" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
        <Room id="1083" parentID="1079" level="4" writerID="0" creatorID="0" nodeType="1077" template="1089" sortOrder="3" createDate="2010-09-27T14:12:40" updateDate="2010-10-07T14:49:48" nodeName="Test Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1083" isDoc="">
            <BlogPost id="1183" parentID="1083" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:52:22" updateDate="2010-10-08T17:52:39" nodeName="Test Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1083,1183" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
    </BlogCentre>
    <BlogCentre id="1080" parentID="1078" level="3" writerID="0" creatorID="0" nodeType="1075" template="1076" sortOrder="2" createDate="2010-09-27T14:11:55" updateDate="2010-10-07T14:43:23" nodeName="Blog Centre 2" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080" isDoc="">
        <Room id="1084" parentID="1080" level="4" writerID="0" creatorID="0" nodeType="1077" template="0" sortOrder="1" createDate="2010-09-27T14:12:45" updateDate="2010-10-07T14:43:17" nodeName="Room 1" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1084" isDoc="">
            <BlogPost id="1184" parentID="1084" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:53:05" updateDate="2010-10-08T17:53:29" nodeName="Blog Post 3" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1084,1184" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
        <Room id="1085" parentID="1080" level="4" writerID="0" creatorID="0" nodeType="1077" template="0" sortOrder="2" createDate="2010-09-27T14:12:50" updateDate="2010-10-07T14:43:19" nodeName="Room 2" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1085" isDoc="">
            <BlogPost id="1185" parentID="1085" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:53:51" updateDate="2010-10-08T17:54:15" nodeName="Blog Post 109" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1085,1185" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
        <Room id="1086" parentID="1080" level="4" writerID="0" creatorID="0" nodeType="1077" template="1089" sortOrder="3" createDate="2010-09-27T14:12:55" updateDate="2010-10-07T14:50:39" nodeName="Room 3" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1086" isDoc="">
            <BlogPost id="1186" parentID="1086" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:54:28" updateDate="2010-10-08T17:54:51" nodeName="Blog Post 123" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1086,1186" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
    </BlogCentre>
</Blog>

在 Umbraco XSLT 样式表中，有一个为当前页面传递的参数。

<xsl:param name="currentPage" />

这将永远是父节点<Blog />，所以我们必须从这里开始。

您会注意到<Blog /> 和<BlogPost /> 之间存在中间节点，但我们想计算每个<BlogCentre /> 和<Room /> 中的博客帖子总数。

为此，我一直在使用

<xsl:for-each select="$currentPage/descendant::BlogPost" />

选择所有博客文章，无论中心/房间如何。

现在我的要求是，按月份和年份（包括每个月的帖子计数）对每篇博客文章进行分组。我想将它们分组的日期是属性createDate 除非有一个名为<archiveUnder>some-date-here</archiveUnder> 的子节点。进一步解释

更新
我可以通过检查属性是否为空白来轻松完成这部分，因此如果需要，解决方案可以省略这部分。

<BlogPost createDate="2010-10-08T17:52:22">
    <!-- no archiveUnder -->
</BlogPost>

^ 使用创建日期

<BlogPost createDate="2010-10-08T17:52:22">
    <archiveUnder>2010-10-08T17:51:19</archiveUnder>
</BlogPost>

^ 使用archiveUnder

最后，这是一个预期输出的示例。

<ul>
    <li>
        <h3>2010</h3>
        <ul>
            <li>September (4)</li>
            <li>August (2)</li>
            <li>June (5)</li> <!-- No July because there are no posts -->
        </ul>
    </li>
    <li>
        <h3>2009</h3>
        <ul>
            <li>April (4)</li>
            <li>March (2)</li>
            <li>January (5)</li> <!-- No February because there are no posts -->
        </ul>
    </li>
</ul>

【问题讨论】：

这在很大程度上取决于您是否有可用的 XSLT 2.0。如果你有 2.0，你就不需要 Muenchian。
Umbraco，所以这是 XSLT 1.0。
@Marko Ivanovski：我认为如果你只想要一个月的结果，那么不需要分组，只需为选择那个月的帖子添加一个谓词。
@Alejandro，您一定已经浏览过这篇文章 :) 我提供的 XSLT 是用于列出当前月的帖子的一种。我已经添加了它，这样人们就可以看到新的模式以及它的 XSLT 是什么样子了 :) LarsH，@Jesse，XSLT 1.0 不幸的是:(
@Marko Ivanovski：好问题，+1。请参阅我对请求分组的回答，使用 Muenchian 方法——这是在 XSLT 1.0 中执行分组的最有效方式。

标签： xml xslt date group-by umbraco

【解决方案1】：

此转换（141 行，但为便于阅读而进行了格式化）：

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 xmlns:m="my:months" exclude-result-prefixes="m" >
 <xsl:output omit-xml-declaration="yes" indent="yes"/>

 <xsl:param name="currentPage" select="/*"/>

 <m:months>
   <m>January</m>
   <m>February</m>
   <m>March</m>
   <m>April</m>
   <m>May</m>
   <m>June</m>
   <m>July</m>
   <m>August</m>
   <m>September</m>
   <m>October</m>
   <m>November</m>
   <m>December</m>
 </m:months>

 <xsl:variable name="vMonthNames" select=
  "document('')/*/m:months/*"/>

 <xsl:key name="kPostsByYear" match="BlogPost"
  use="substring-before(
                    concat(archiveUnder,
                           @createDate[not(archiveUnder)]
                           ),
                    '-'
                        )"/>

 <xsl:key name="kPostsByYearMonth" match="BlogPost"
  use="substring(
                 concat(archiveUnder,
                        @createDate[not(archiveUnder)]
                        ),
                 1,7
                 )"/>

 <xsl:template match="/">
   <ul>
    <xsl:apply-templates mode="year" select=
     "$currentPage/*/*/BlogPost
          [generate-id()
          =
           generate-id(key('kPostsByYear',
                       substring-before(
                       concat(archiveUnder,
                              @createDate[not(archiveUnder)]
                              ),
                              '-'
                                         )
                            )[1]
                       )
              ]
     ">
       <xsl:sort order="descending" select=
        "substring-before(
                    concat(archiveUnder,
                           @createDate[not(archiveUnder)]
                           ),

                           '-'
                          )
        "/>
   </xsl:apply-templates>
  </ul>
 </xsl:template>

 <xsl:template match="BlogPost" mode="year">
  <xsl:variable name="vYear" select=
    "substring-before(
                     concat(archiveUnder,
                            @createDate[not(archiveUnder)]
                            ),

                      '-')
    "/>
  <xsl:variable name="vyearBlogs"
                select="key('kPostsByYear',$vYear)"/>
  <li>
    <h3><xsl:value-of select="$vYear"/></h3>
    <ul>
      <xsl:apply-templates mode="month" select=
          "$vyearBlogs
             [generate-id()
             =
              generate-id(key('kPostsByYearMonth',
                          substring(
                        concat(archiveUnder,
                               @createDate[not(archiveUnder)]
                               ),

                        1,7
                                    )
                              )[1]
                          )
              ]
          ">
         <xsl:sort order="descending" select=
            "substring(
                 concat(archiveUnder,
                        @createDate[not(archiveUnder)]
                        ),

                 6,2)"
         />
      </xsl:apply-templates>
   </ul>
  </li>
 </xsl:template>

 <xsl:template match="BlogPost" mode="month">
  <xsl:variable name="vMonth" select=
   "substring(
        concat(archiveUnder,
               @createDate[not(archiveUnder)]
               ),

        6,2)"/>

  <xsl:variable name="vmonthsBlogs" select=
    "key('kPostsByYearMonth',
         substring(
              concat(archiveUnder,
                     @createDate[not(archiveUnder)]
                     ),

              1,7)
         )"/>
  <li><xsl:value-of select=
        "concat($vMonthNames[position()=$vMonth],
                ' (',
                count($vmonthsBlogs),
                ')'
                )"/>
  </li>
 </xsl:template>
</xsl:stylesheet>

当应用于提供的示例 XML 文档时（我们正在访问 $currentPage <xsl:param> 之外的每个节点，因为这将是在真实的 Umbraco 案例中），为可读性和 @987654326 格式化每个BlogPost 的@ 属性都移到元素名称之后的第一行：

<Blog id="1078" parentID="1049" level="2" writerID="0" creatorID="0" nodeType="1073" template="1089" sortOrder="7" createDate="2010-09-27T14:11:04" updateDate="2010-10-12T16:59:12" nodeName="Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078" isDoc="">
    <newPageTitle>The Lorem Ipsum Blog</newPageTitle>
    <BlogCentre id="1079" parentID="1078" level="3" writerID="0" creatorID="0" nodeType="1075" template="1076" sortOrder="1" createDate="2010-09-27T14:11:49" updateDate="2010-10-07T14:43:13" nodeName="Blog Centre 1" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079" isDoc="">
        <Room id="1081" parentID="1079" level="4" writerID="0" creatorID="0" nodeType="1077" template="0" sortOrder="1" createDate="2010-09-27T14:12:26" updateDate="2010-10-07T14:43:06" nodeName="Room 10" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081" isDoc="">
            <BlogPost id="1175" parentID="1081" level="5"
            createDate="2010-10-07T14:51:48"
            writerID="0" creatorID="0" nodeType="1087"
            template="1192" sortOrder="1"
            updateDate="2010-10-12T21:30:53"
            nodeName="The first ever Blog post"
            writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1175" isDoc="">
                <topicTitle>The first ever blog</topicTitle>
                <archiveUnder/>
            </BlogPost>
            <BlogPost id="1180" parentID="1081"
             createDate="2010-10-08T15:52:20"
             level="5" writerID="0" creatorID="3"
             nodeType="1087" template="1089"
             sortOrder="2"
             updateDate="2010-10-12T16:57:00" nodeName="asdasd"
             writerName="Administrator" creatorName="ZX"
             path="-1,1049,1078,1079,1081,1180" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
            <BlogPost id="1181" parentID="1081" level="5"
             createDate="2010-10-08T17:50:19"
             writerID="0" creatorID="0" nodeType="1087"
             template="1089" sortOrder="3"
             updateDate="2010-10-12T11:40:37"
             nodeName="condimentum"
             writerName="Administrator"
             creatorName="Administrator"
             path="-1,1049,1078,1079,1081,1181" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-09-01T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1194" parentID="1081" level="5"
            createDate="2010-10-12T11:41:50"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="4"
            updateDate="2010-10-12T11:42:37"
            nodeName="Nam augue" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1194" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-08-05T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1195" parentID="1081" level="5"
            createDate="2010-10-12T11:42:15"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="5"
            updateDate="2010-10-12T11:42:25"
            nodeName="consequat nunc"
            writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1195" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-08-12T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1196" parentID="1081" level="5"
            createDate="2010-10-12T12:05:57"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="6"
            updateDate="2010-10-12T12:08:40"
            nodeName="cursus congue"
            writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1196" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2009-10-22T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1197" parentID="1081" level="5"
             createDate="2010-10-12T12:08:54"
             writerID="0" creatorID="0" nodeType="1087"
             template="1089" sortOrder="7"
             updateDate="2010-10-12T12:09:24"
             nodeName="inceptos" writerName="Administrator"
             creatorName="Administrator"
             path="-1,1049,1078,1079,1081,1197" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2009-11-19T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1198" parentID="1081" level="5"
            createDate="2010-10-12T12:09:45"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="8"
            updateDate="2010-10-12T12:10:13"
            nodeName="inceptos himenaeos"
            writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1198" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2009-12-16T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1199" parentID="1081" level="5"
             createDate="2010-10-12T12:10:29"
             writerID="0" creatorID="0" nodeType="1087"
             template="1089" sortOrder="9"
             updateDate="2010-10-12T12:10:56"
             nodeName="consequat" writerName="Administrator"
             creatorName="Administrator"
             path="-1,1049,1078,1079,1081,1199" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-01-13T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1200" parentID="1081" level="5"
            createDate="2010-10-12T12:11:08"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="10"
            updateDate="2010-10-12T12:11:35"
            nodeName="himenaeos" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1200" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-02-09T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1201" parentID="1081" level="5"
             createDate="2010-10-12T12:11:45"
             writerID="0" creatorID="0" nodeType="1087"
             template="1089" sortOrder="11"
             updateDate="2010-10-12T12:12:35"
             nodeName="cursus congue" writerName="Administrator"
             creatorName="Administrator"
             path="-1,1049,1078,1079,1081,1201" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-04-22T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1202" parentID="1081" level="5"
            createDate="2010-10-12T12:12:18"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="12"
            updateDate="2010-10-12T12:12:45" nodeName="pharetra"
            writerName="Administrator" creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1202" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-03-09T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1203" parentID="1081" level="5"
            createDate="2010-10-12T12:13:05"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="13"
            updateDate="2010-10-12T12:13:27"
            nodeName="inceptos himenaeos"
            writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1203" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-05-26T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1204" parentID="1081" level="5"
            createDate="2010-10-12T12:13:36"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="14"
            updateDate="2010-10-12T12:13:56"
            nodeName="pharetra" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1204" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-06-11T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1205" parentID="1081" level="5"
            createDate="2010-10-12T12:14:06"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="15"
            updateDate="2010-10-12T12:14:41"
            nodeName="Fusce augue" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1205" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-07-08T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1206" parentID="1081" level="5"
            createDate="2010-10-12T12:14:52"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="16"
            updateDate="2010-10-12T12:15:19"
            nodeName="pharetra et fermentum"
            writerName="Administrator" creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1206" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-08-09T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1207" parentID="1081"
            createDate="2010-10-12T12:15:31"
            level="5" writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="17"
            updateDate="2010-10-12T12:15:51"
            nodeName="Fusce augue purus" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1207" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-09-14T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1208" parentID="1081" level="5"
            createDate="2010-10-12T12:16:25"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="18"
            updateDate="2010-10-12T12:16:45"
            nodeName="Class aptent taciti" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1208" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-06-04T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1209" parentID="1081" level="5"
            createDate="2010-10-12T12:17:01"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="19"
            updateDate="2010-10-12T12:17:29" nodeName="Class aptent"
            writerName="Administrator" creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1209" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-06-21T00:00:00</archiveUnder>
            </BlogPost>
        </Room>
        <Room id="1082" parentID="1079" level="4"
        createDate="2010-09-27T14:12:33"
        writerID="0" creatorID="0" nodeType="1077" template="0"
        sortOrder="2"
        updateDate="2010-10-07T14:43:09" nodeName="Test Blog"
        writerName="Administrator" creatorName="Administrator"
        path="-1,1049,1078,1079,1082" isDoc="">
            <BlogPost id="1182" parentID="1082" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:51:19" updateDate="2010-10-08T17:51:58" nodeName="Test Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1082,1182" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
        <Room id="1083" parentID="1079" level="4" writerID="0"
        createDate="2010-09-27T14:12:40"
        creatorID="0" nodeType="1077" template="1089" sortOrder="3"
        updateDate="2010-10-07T14:49:48" nodeName="Test Blog"
        writerName="Administrator" creatorName="Administrator"
        path="-1,1049,1078,1079,1083" isDoc="">
            <BlogPost id="1183" parentID="1083" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:52:22" updateDate="2010-10-08T17:52:39" nodeName="Test Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1083,1183" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
    </BlogCentre>
    <BlogCentre id="1080" parentID="1078" level="3" writerID="0"
    createDate="2010-09-27T14:11:55"
    creatorID="0" nodeType="1075" template="1076" sortOrder="2"
    updateDate="2010-10-07T14:43:23" nodeName="Blog Centre 2"
    writerName="Administrator" creatorName="Administrator"
    path="-1,1049,1078,1080" isDoc="">
        <Room id="1084" parentID="1080" level="4" writerID="0" creatorID="0" nodeType="1077" template="0" sortOrder="1" createDate="2010-09-27T14:12:45" updateDate="2010-10-07T14:43:17" nodeName="Room 1" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1084" isDoc="">
            <BlogPost id="1184" parentID="1084" level="5" writerID="0"
            createDate="2010-10-08T17:53:05"
            creatorID="0" nodeType="1087" template="1089" sortOrder="1"
            updateDate="2010-10-08T17:53:29" nodeName="Blog Post 3"
            writerName="Administrator" creatorName="Administrator"
            path="-1,1049,1078,1080,1084,1184" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
        <Room id="1085" parentID="1080" level="4" writerID="0"
        createDate="2010-09-27T14:12:50"
        creatorID="0" nodeType="1077" template="0" sortOrder="2"
        updateDate="2010-10-07T14:43:19" nodeName="Room 2"
        writerName="Administrator" creatorName="Administrator"
        path="-1,1049,1078,1080,1085" isDoc="">
            <BlogPost id="1185" parentID="1085" level="5" writerID="0"
            createDate="2010-10-08T17:53:51"
            creatorID="0" nodeType="1087" template="1089" sortOrder="1"
            updateDate="2010-10-08T17:54:15" nodeName="Blog Post 109"
            writerName="Administrator" creatorName="Administrator"
            path="-1,1049,1078,1080,1085,1185" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
        <Room id="1086" parentID="1080" level="4" writerID="0" creatorID="0" nodeType="1077" template="1089" sortOrder="3" createDate="2010-09-27T14:12:55" updateDate="2010-10-07T14:50:39" nodeName="Room 3" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1086" isDoc="">
            <BlogPost id="1186" parentID="1086" level="5" writerID="0"
            createDate="2010-10-08T17:54:28"
            creatorID="0" nodeType="1087" template="1089" sortOrder="1"
            updateDate="2010-10-08T17:54:51"
            nodeName="Blog Post 123" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1080,1086,1186" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
    </BlogCentre>
</Blog>

产生想要的正确结果：

<ul>
   <li>
      <h3>2010</h3>
      <ul>
         <li>October (7)</li>
         <li>September (2)</li>
         <li>August (3)</li>
         <li>July (1)</li>
         <li>June (3)</li>
         <li>May (1)</li>
         <li>April (1)</li>
         <li>March (1)</li>
         <li>February (1)</li>
         <li>January (1)</li>
      </ul>
   </li>
   <li>
      <h3>2009</h3>
      <ul>
         <li>December (1)</li>
         <li>November (1)</li>
         <li>October (1)</li>
      </ul>
   </li>
</ul>

请注意：

Muenchian Grouping 用于 -- 既用于确定不同的年份，也用于确定每年的不同月份。
使用表达式在createDate 属性和archiveUnder 子属性之间选择日期：

concat(archiveUnder, @createDate[not(archiveUnder)])

如果archiveUnder 缺失或为空，则此串联仅选择@createDate。

.3。 即使元素的日期未排序，转换也会产生正确的结果。

【讨论】：

@Dimitre：+1 我错过了订购结果。
@Alejandro：谢谢。您必须更新您的答案，添加缺少的排序。距离悬赏期结束还有 7 天。
嗨@Dimitre，我已经删除了我所有的 cmets 以使事情变得轻松一点。我刚刚尝试了您的代码，但它抛出了一个错误Error parsing XSLT file: \xslt\blogArchive.xslt". 通常 umbraco 确实指定了错误是什么，但在这种情况下它没有。检查代码后，我注意到您没有在任何地方使用 $currentPage 。这就是上面提到的 XML 的来源，它包含一个从 <Blog> 开始的节点集。
我尝试用currentPage/descendant::BlogPost 替换这一行*/*/BlogPost 但我收到错误For security reasons DTD is prohibited in this XML document. To enable DTD processing set the DtdProcessing property on XmlReaderSettings to Parse and pass the settings into XmlReader.Create method. 我在论坛our.umbraco.org/forum/developers/xslt/3008-Namespaces-in-xslt 上找到这篇文章并尝试用xmlns:m="urn:months" 替换xmlns:m="my:months" 但是无济于事。在这一点上，我真的不知道该怎么办。 ://
@Dimitre，我们离得太近了！我认为@CreateDate 没有被选中，因为只有具有archiveUnder 的节点被分组。未分类的帖子数量显示为(10)。有没有其他方法可以做(@createDate|archiveUnder)？

【解决方案2】：

正如Jeni Tennison 所述，这将是一个两步法：

通过博客文章确定月份。
获取特定月份的所有帖子。

我们可以使用以下 XPath 表达式获取第一部分：

BlogPost[not (substring(@createDate, 1, 7) 
    = substring(preceding-sibling::*[1]/@createDate, 1, 7))]

然后，对于第二部分，我们需要使用count() 函数来统计帖子数：

BlogPost[not (substring(@createDate, 1, 7) 
    = substring(preceding-sibling::*[1]/@createDate, 1, 7))]

在我们的 XSLT 中，我们可以使用如下表达式：

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" indent="yes"/>

  <xsl:template match="Room">
    <ul>
      <xsl:for-each select="BlogPost[not (substring(@createDate, 1, 7) = substring(preceding-sibling::*[1]/@createDate, 1, 7))]">
        <xsl:sort select="@createDate" order="descending"/>
        <li>
          <xsl:value-of select="substring(@createDate, 1, 7)"/>
          <xsl:text>(</xsl:text>
          <xsl:value-of select="count(//BlogPost[substring(@createDate, 1, 7) = substring(current()/@createDate, 1, 7)]) "/>
          <xsl:text>)</xsl:text>
        </li>
      </xsl:for-each>
    </ul>
  </xsl:template>

</xsl:stylesheet>

上面的样式表只是按月工作，不考虑多年。为了支持年份，您可以添加一个额外的步骤来首先获取独特的年份：

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" indent="yes"/>

  <xsl:template match="Room">
    <ul>
      <xsl:for-each select="BlogPost[not (substring(@createDate, 1, 4) = substring(preceding-sibling::*[1]/@createDate, 1, 4))]">
        <xsl:sort select="@createDate" order="descending"/>
        <li>
          <xsl:value-of select="substring(@createDate, 1, 4)"/>
          <ul>
            <xsl:for-each select="//BlogPost[substring(@createDate, 1, 4) = substring(current()/@createDate, 1, 4) and not (substring(@createDate, 1, 7) = substring(preceding-sibling::*[1]/@createDate, 1, 7))]">
              <xsl:sort select="@createDate" order="descending"/>
              <li>
                <xsl:value-of select="substring(@createDate, 1, 7)"/>
                <xsl:text>(</xsl:text>
                <xsl:value-of select="count(//BlogPost[substring(@createDate, 1, 7) = substring(current()/@createDate, 1, 7)]) "/>
                <xsl:text>)</xsl:text>
              </li>
            </xsl:for-each>
          </ul>
        </li>
      </xsl:for-each>
    </ul>
  </xsl:template>

</xsl:stylesheet>

【讨论】：

这看起来很有希望。我只是在创建一些测试用例以确保它是防弹的。
我尝试使用您的代码，但我得到了一个非常奇怪的输出。有关更多信息，请参阅我更新的问题

【解决方案3】：

这个样式表：

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 xmlns:m="month"
 exclude-result-prefixes="m">
    <xsl:param name="currentPage" select="/Blog"/>
    <xsl:key name="kBlogPostByYear" match="BlogPost"
             use="substring((@createDate|archiveUnder)[last()],1,4)"/>
    <xsl:key name="kBlogPostByYearMonth" match="BlogPost"
             use="substring((@createDate|archiveUnder)[last()],1,7)"/>
    <m:month>January</m:month>
    <m:month>February</m:month>
    <m:month>March</m:month>
    <m:month>April</m:month>
    <m:month>May</m:month>
    <m:month>June</m:month>
    <m:month>July</m:month>
    <m:month>August</m:month>
    <m:month>September</m:month>
    <m:month>October</m:month>
    <m:month>November</m:month>
    <m:month>December</m:month>
    <xsl:variable name="vMonth" select="document('')/*/m:*"/>
    <xsl:template match="/">
        <ul>
            <xsl:apply-templates
                 select="$currentPage/*/*/BlogPost
                                 [count(.|key('kBlogPostByYear',
                                              substring((@createDate|
                                                         archiveUnder)
                                                         [last()],
                                                        1,
                                                        4))[1])=1]">
                <xsl:sort select="substring((@createDate|archiveUnder)
                                            [last()],
                                            1,4)" order="descending"/>
            </xsl:apply-templates>
        </ul>
    </xsl:template>
    <xsl:template match="BlogPost">
        <xsl:variable name="vYear" select="substring((@createDate|
                                                      archiveUnder)[last()],
                                                      1,
                                                      4)"/>
        <ul>
            <h3>
                <xsl:value-of select="$vYear"/>
            </h3>
            <ul>
                <xsl:apply-templates
                     select="$currentPage/*/*/BlogPost
                                         [generate-id() =
                                          generate-id(
                                             key('kBlogPostByYearMonth',
                                                 concat($vYear,'-',
                                                        substring(
                                                           (@createDate|
                                                            archiveUnder)
                                                                 [last()],
                                                           6,
                                                           2))))]"
                                     mode="month">
                    <xsl:sort select="substring((@createDate|archiveUnder)
                                                [last()],
                                                6,2)" order="descending"/>
                </xsl:apply-templates>
            </ul>
        </ul>
    </xsl:template>
        <xsl:template match="BlogPost" mode="month">
        <xsl:variable name="vDate"
                      select="(@createDate|archiveUnder)[last()]"/>
        <li>
            <xsl:value-of select="concat($vMonth
                                            [number(
                                               substring($vDate,
                                                         6,
                                                         2))],
                                         ' (',
                                         count(key('kBlogPostByYearMonth',
                                                   substring($vDate,1,7))),
                                         ')')"/>
        </li>
    </xsl:template>
</xsl:stylesheet>

输出：

<ul>
    <ul>
        <h3>2010</h3>
        <ul>
            <li>October (7)</li>
            <li>September (2)</li>
            <li>August (3)</li>
            <li>July (1)</li>
            <li>June (3)</li>
            <li>May (1)</li>
            <li>April (1)</li>
            <li>March (1)</li>
            <li>February (1)</li>
            <li>January (1)</li>
        </ul>
    </ul>
    <ul>
        <h3>2009</h3>
        <ul>
            <li>December (1)</li>
            <li>November (1)</li>
            <li>October (1)</li>
        </ul>
    </ul>
</ul>

编辑 3：抱歉，我错过了排序。现在添加。此外，使用 $currentPage 参数进行小重构。

【讨论】：

@Alejandro - 这是否也考虑到了年份？另外我不需要列出内容的第二部分，只需要<ul></ul> 部分。
@Marko Ivanovski：您写道：这是否也考虑到年份？ 是，分组键是年月（首先7 位日期）。你写道：我也不需要第二部分。好吧，它是为了向您展示如何使用键进行选择。
@Alejandro，抱歉让您感到困惑，请查看我更新的问题，希望它更有意义。