Groovy:XMLSlurper的正确语法,用于查找具有给定属性的元素

Groovy是用于读取和操作XML文档的DSL，而XMLSlurper是Groovy的库之一。要查找具有给定属性的元素，XMLSlurper可以使用正确的语法，以下是示例代码：

def document = """<?xml version="1.0"?>
<catalog>
  <book id="bk101">
   <author>Gambardella, Matthew</author>
   <title>XML Developer's Guide</title>
   <genre>Computer</genre>
   <price>44.95</price>
   <publish_date>2000-10-01</publish_date>
   <description>An in-depth look at creating applications with XML.</description>
  </book>
  <book id="bk102">
   <author>Ralls, Kim</author>
   <title>Midnight Rain</title>
   <genre>Fantasy</genre>
   <price>5.95</price>
   <publish_date>2000-12-16</publish_date>
   <description>A former architect battles corporate zombies and an evil sorceress.</description>
  </book>
</catalog>
"""

def books = new XmlSlurper().parse(document)

def authorWithID="bk102"