xmlのxPath

//*[starts-with(name(),'B')]     //BBB[@*]

     < AAA >  
          < BBB  id = "b1" />  
          < BBB  id = "b2" />  
          < BBB  name = "bbb" />  
          < BBB />     //BBB[not(@*)]
     </ AAA >

 

//*[count(BBB)=2]

<AAA>  
          <CCC>  
               <BBB/>  
               <BBB/>  
               <BBB/>  
          </CCC>  
          <DDD>  
               <BBB/>  
               <BBB/>  
          </DDD>  
          <EEE>  
               <CCC/>  
               <DDD/>  
          </EEE>  
     </AAA>

 

//*[string-length(name()) = 3]

//*[contains(name(),'C')]

//*[starts-with(name(),'B')]

/AAA/EEE | //BBB

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preceding 轴 (axis) 包含同一文档中按文档顺序位于上下文节点之前的所有节点 , 除了祖先节点 , 属性节点和命名空间节点

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following 轴 (axis) 包含同一文档中按文档顺序位于上下文节点之后的所有节点 , 除了祖先节点 , 属性节点和命名空间节点

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preceding-sibling 轴 (axis) 包含上下文节点之前的所有兄弟节点

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ancestor 轴 (axis) 包含上下节点的祖先节点 , 该祖先节点由其上下文节点的父节点以及父节点的父节点等等诸如此类的节点构成 , 所以 ancestor 轴总是包含有根节点 , 除非上下文节点就是根节点本身 .

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parent 轴 (axis) 包含上下文节点的父节点 , 如果有父节点的话

<!-- /* Font Definitions */ @font-face {font-family:宋体; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-alt:SimSun; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 135135232 16 0 262145 0;} @font-face {font-family:Verdana; panose-1:2 11 6 4 3 5 4 4 2 4; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:536871559 0 0 0 415 0;} @font-face {font-family:"/@宋体"; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 135135232 16 0 262145 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; text-align:justify; text-justify:inter-ideograph; mso-pagination:none; font-size:10.5pt; mso-bidi-font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:宋体; mso-font-kerning:1.0pt;} /* Page Definitions */ @page {mso-page-border-surround-header:no; mso-page-border-surround-footer:no;} @page Section1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> descendant ( 后代 ) 轴包含上下文节点的后代 , 一个后代是指子节点或者子节点的子节点等等 , 因此 descendant 轴不会包含属性和命名空间节点