如何使用包含 perioid 的字符串从 Groovy 的 GPathResult 中检索元素 [英] How can I retrieve an element from Groovy's GPathResult using a string that contains a perioid
本文介绍了如何使用包含 perioid 的字符串从 Groovy 的 GPathResult 中检索元素的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
def elementPath = "elementA.elementB"
xml."${elementPath}".each {}
如何进行这项工作?xml.elementA.elementB.each {}
有效.
How to make this work? xml.elementA.elementB.each {}
works.
推荐答案
我能想到 2 种方法来解决这个问题...
I can think of 2 ways round this...
// Dummy Data for the testing
def CAR_RECORDS = '''
<records>
<car name='HSV Maloo' make='Holden' year='2006'>
<country>Australia</country>
<record type='speed'>Production Pickup Truck with speed of 271kph</record>
</car>
<car name='P50' make='Peel' year='1962'>
<country>Isle of Man</country>
<record type='size'>Smallest Street-Legal Car at 99cm wide and 59 kg in weight</record>
</car>
<car name='Royale' make='Bugatti' year='1931'>
<country>France</country>
<record type='price'>Most Valuable Car at $15 million</record>
</car>
</records>
'''
def xml = new XmlSlurper().parseText( CAR_RECORDS )
def propNames = 'car.country'
// METHOD 1
// Split the propnames into individual properties, then use Inject to walk down this list
// Passing the result to the next property
propNames.split( /./ ).inject( xml ) { obj, prop -> obj?."$prop" }.each { println it.text() }
// METHOD 2
// Construct a string to evaluate, and pass the xml object to it (it gets substituted in place of x)
Eval.x( xml, "x.${propNames}" ).each { println it.text() }
希望这有帮助:-)
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