xpath中的字符串

Question

我有一个字符串，我想在xpath中将它用作选择器，以选择名称为字符串值的节点。

declare variable $get_count := <count><comedy>1</comedy></count>;
(: $string = "comedy" :)
 let $value =  $get_count/$string (: but this doesn't return anything)

我该怎么做？

Answer 1

let $value =  $get_count/$string (: but this doesn't return anything) 

使用：

declare variable $get_count := <count><comedy>1</comedy></count>;
declare variable $string := "comedy";

 let $value :=  $get_count/*[name()=$string]
  return 
    $value

当这个应用于任何XML文档（未使用）时，会生成所需的正确结果：

<comedy>1</comedy>