我一直在嘗試讀取一個xml文件並使用groovy的JsonBuilder將其轉換爲json。問題是,當我Caught:java.lang.StackOverflowError JsonBuilder關閉
def builder = new JsonBuilder(jsonObject)
println builder.toPrettyString()
打印我有一個夾縫:java.lang.StackOverflowError
這裏是整個堆棧跟蹤
Exception in thread "main" java.lang.StackOverflowError
at groovy.json.JsonOutput.writeObject(JsonOutput.java:259)
at groovy.json.JsonOutput.writeIterator(JsonOutput.java:442)
at groovy.json.JsonOutput.writeObject(JsonOutput.java:272)
at groovy.json.JsonOutput.writeIterator(JsonOutput.java:442)
at groovy.json.JsonOutput.writeObject(JsonOutput.java:272)
at groovy.json.JsonOutput.writeIterator(JsonOutput.java:442)
at groovy.json.JsonOutput.writeObject(JsonOutput.java:272)
at groovy.json.JsonOutput.writeIterator(JsonOutput.java:442)
at groovy.json.JsonOutput.writeObject(JsonOutput.java:272)
at groovy.json.JsonOutput.writeIterator(JsonOutput.java:442)
at groovy.json.JsonOutput.writeObject(JsonOutput.java:272)
at groovy.json.JsonOutput.writeIterator(JsonOutput.java:442)
at groovy.json.JsonOutput.writeObject(JsonOutput.java:272)
at groovy.json.JsonOutput.writeIterator(JsonOutput.java:442)
下面的代碼。
package firstgroovyproject
import groovy.json.JsonBuilder
class XmlToJsonII {
static void main(def args){
def carRecords = '''
<records>
<car name='HSV Maloo' make='Holden' year='2006'>
<countries>
<country>
Austria
</country>
<country>
Spain
</country>
</countries>
<record type='speed'>Production Pickup Truck with speed of 271kph
</record>
</car>
<car name='P50' make='Peel' year='1962'>
<countries>
<country>
Monaco
</country>
</countries>
<record type='size'>Smallest Street-Legal Car at 99cm wide and 59 kg
in weight</record>
</car>
<car name='Royale' make='Bugatti' year='1931'>
<record type='price'>Most Valuable Car at $15 million</record>
<countries>
<country>
Italia
</country>
</countries>
</car>
<car name='Seat' make='Ibiza' year='1985'>
<record type='price'>barato</record>
<countries>
<country>
Spain
</country>
</countries>
</car>
</records>
'''
def xmlRecords = new XmlSlurper().parseText(carRecords)
def jsonObject = [:]
jsonObject.records = []
def records = jsonObject.records
xmlRecords.car.each {xmlCar ->
records.add([
countries:
xmlCar.countries.children().each{ country ->
println "country : ${country.text()}"
[country: country.text()]
},
])
}
def builder = new JsonBuilder(jsonObject)
println builder.toPrettyString()
//println builder.toString()
}
}
向我們顯示錯誤和jsonObject的整個堆棧跟蹤。最有可能在那裏有一個自我引用導致無限循環。 – cfrick 2014-10-30 23:17:03
異常在線程 「主」 java.lang.StackOverflowError的 在groovy.json.JsonOutput.writeObject(JsonOutput.java:259) 在groovy.json.JsonOutput.writeIterator(JsonOutput.java:442) 在groovy.json。 JsonOutput.writeObject(JsonOutput.java:272) at groovy.json.JsonOutput.writeIterator(JsonOutput.java:442) – 2014-10-30 23:26:34