XSL-FO表格违规组分页问题：避免单组跨页显示

核心思路 #

把每个3行的违规记录组用<fo:table-row-group>包裹，给这个组添加keep-together.within-page="always"属性，强制整个组保持在同一页面内，分页仅在组与组之间触发。

修改后的代码示例 #

<fo:table table-layout="fixed" width="100%">
  <fo:table-column/>
  <fo:table-column/> 
  <fo:table-column/> 
  
  <fo:table-body>                  
    <!--Violation Group 1-->
    <fo:table-row-group keep-together.within-page="always">
      <fo:table-row>
        <fo:table-cell><fo:block>Violation 1 Attrib 1</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 1 Attrib 2</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 1 Attrib 3</fo:block></fo:table-cell>
      </fo:table-row>
      <fo:table-row>
        <fo:table-cell><fo:block>Violation 1 Attrib 4</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 1 Attrib 5</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 1 Attrib 6</fo:block></fo:table-cell>
      </fo:table-row>
      <fo:table-row>
        <fo:table-cell><fo:block>Violation 1 Attrib 7</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 1 Attrib 8</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 1 Attrib 9</fo:block></fo:table-cell>
      </fo:table-row>
    </fo:table-row-group>
    
    <!--Violation Group 2 - 分页仅会在此类组之间发生-->
    <fo:table-row-group keep-together.within-page="always">
      <fo:table-row>
        <fo:table-cell><fo:block>Violation 2 Attrib 1</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 2 Attrib 2</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 2 Attrib 3</fo:block></fo:table-cell>
      </fo:table-row>
      <fo:table-row>
        <fo:table-cell><fo:block>Violation 2 Attrib 4</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 2 Attrib 5</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 2 Attrib 6</fo:block></fo:table-cell>
      </fo:table-row>
      <fo:table-row>
        <fo:table-cell><fo:block>Violation 2 Attrib 7</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 2 Attrib 8</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 2 Attrib 9</fo:block></fo:table-cell>
      </fo:table-row>
    </fo:table-row-group>
    
    <!--Violation Group 3-->
    <fo:table-row-group keep-together.within-page="always">
      <fo:table-row>
        <fo:table-cell><fo:block>Violation 3 Attrib 1</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 3 Attrib 2</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 3 Attrib 3</fo:block></fo:table-cell>
      </fo:table-row>
      <fo:table-row>
        <fo:table-cell><fo:block>Violation 3 Attrib 4</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 3 Attrib 5</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 3 Attrib 6</fo:block></fo:table-cell>
      </fo:table-row>
      <fo:table-row>
        <fo:table-cell><fo:block>Violation 3 Attrib 7</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 3 Attrib 8</fo:block></fo:table-cell>
        <fo:table-cell><fo:block>Violation 3 Attrib 9</fo:block></fo:table-cell>
      </fo:table-row>
    </fo:table-row-group>
  </fo:table-body>
</fo:table>

替代方案（无row-group场景） #

如果你的FO处理器对table-row-group支持有限，可以给每个违规组的前两行添加keep-with-next.within-page="always"属性，确保前两行必须和第三行在同一页：

<!--Violation Group 1-->
<fo:table-row keep-with-next.within-page="always">
  <fo:table-cell><fo:block>Violation 1 Attrib 1</fo:block></fo:table-cell>
  <fo:table-cell><fo:block>Violation 1 Attrib 2</fo:block></fo:table-cell>
  <fo:table-cell><fo:block>Violation 1 Attrib 3</fo:block></fo:table-cell>
</fo:table-row>
<fo:table-row keep-with-next.within-page="always">
  <fo:table-cell><fo:block>Violation 1 Attrib 4</fo:block></fo:table-cell>
  <fo:table-cell><fo:block>Violation 1 Attrib 5</fo:block></fo:table-cell>
  <fo:table-cell><fo:block>Violation 1 Attrib 6</fo:block></fo:table-cell>
</fo:table-row>
<fo:table-row>
  <fo:table-cell><fo:block>Violation 1 Attrib 7</fo:block></fo:table-cell>
  <fo:table-cell><fo:block>Violation 1 Attrib 8</fo:block></fo:table-cell>
  <fo:table-cell><fo:block>Violation 1 Attrib 9</fo:block></fo:table-cell>
</fo:table-row>

注意事项 #

• keep-together.within-page="always"会强制整个组留在同一页，如果单个组高度超过页面剩余空间，FO处理器会自动将整个组移到下一页。
• 该属性兼容XSL 1.0标准，符合你的使用环境。

内容的提问来源于stack exchange，提问作者Sergey Novitsky