XPath Select values with no “isNull”

Question

<?xml version="1.0" encoding="UTF-8"?>
   <rows>
      <row>
         <c n="ColorName">Cyan</c>
         <c isNull="1" n="ColorType"/>
         <c isNull="1" n="ColorBook"/>
         <c isNull="1" n="SpotFunction"/>
         <c n="Angle">45.0</c>
      </row>
      <row>
         <c n="ColorName">HG8-Black</c>
         <c isNull="1" n="ColorType"/>
         <c n="ColorBook">designer</c>
         <c n="SpotFunction">RY</c>
         <c n="Angle">45.0</c>
      </row>
   </rows>

I have this structure and I need to get some values with this XPath:

/rows/row/c[3]/text()

My problem is that sometimes I have this isNull="1" attribute and I get an error because there is no value. It is possible to ignore the line when there is no value?

Answer 1

请尝试以下操作，以避免匹配具有isNull属性的c节点：

/rows/row/c[3][not(@isNull)]/text()

Answer 2

使用此XPath表达式：

/rows/row/c[3][@isNull]/text()