我在Groovy的(1.7.3)XmlUtil.serialize(GPathResult)方法中遇到了一个奇怪的问题.当我用GPathResult调用它时,它会抛出"prolog中不允许内容"错误,但是groovy.util.Node正好序列化.这是我正在尝试的非常简单的Groovy脚本:
import groovy.xml.XmlUtil
import groovy.xml.StreamingMarkupBuilder
def xmlStr = """<?xml version="1.0" encoding="UTF-8"?><stuff>ver="1.0"><properties><foo>bar</foo></properties></stuff>"""
//to pretty print GPathResult -- NOT WORKING
def gpr = new XmlSlurper().parseText( xmlStr )
println XmlUtil.serialize( gpr )
println 'trying groovy.util.Node'
//to pretty print groovy.util.Node -- WORKS
def node = new XmlParser().parseText( xmlStr )
println( XmlUtil.serialize( node ) )
这是我得到的输出:
[Fatal Error] :1:1: Content is not allowed in prolog.
ERROR: 'Content is not allowed in prolog.'
<?xml version="1.0" encoding="UTF-8"?>
trying groovy.util.Node
<?xml version="1.0" encoding="UTF-8"?>
<stuff ver="1.0">
<properties>
<foo>bar</foo>
</properties> …