XmlSlurper.appendNode 不改变大小

Question

我使用 XmlSlurper 处理 XML。它工作正常，直到我更新它。 appendNode 不反射(reflect)大小。

结构更新后如何使用 XmlSlurper？

XML 定义:

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>
  '''

代码女巫失败:

def records = new XmlSlurper().parseText(CAR_RECORDS)
records.appendNode( { car(make:'BMW') } ) 
assert 4 == records.car.size() //fails!!! size == 3

打印出包含宝马车的XML

def xmlOut = new groovy.xml.StreamingMarkupBuilder()    
def temp = xmlOut.bind{ 
        mkp.yield records   
} 
​println temp​

Answer 1

您可以使用 XmlSlurper 再次读取新创建的结构。

...

records = new XmlSlurper().parseText(temp as String)
assert 4 == records.car.size()