[GROOVY-7682] JsonBuilder or JsonOutput incompatible with JodaTime

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.5
• Fix Version/s: 4.0.0
• Component/s: JSON
• Labels: DateTime, Json StackOverflowError
• Environment: JVM: 1.8.0_65 (Oracle); Mac OS X 10.11.1 (El Capitan)
• Assignee: Eric Milles
• Reporter: Jean-Philippe Pellerin
• Created: 20/Nov/15 18:50
• Updated: 03/Feb/22 22:35
• Resolved: 14/Jan/22 10:59

Description

Using groovy's built-in methods to serialize Joda DateTime to JSON always conclude in a StackOverflowError.

ExampleMethod

package com.mgd

import groovy.json.JsonOutput

import org.joda.time.DateTime
import org.joda.time.format.DateTimeFormat
import org.joda.time.format.DateTimeFormatter

class JodaBugJson {

	public static void main(String[] args) {
		DateTimeFormatter formatter = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss.SSS z")

		DateTime dt = formatter.parseDateTime("2015-11-20 13:37:21.123 EST")

		//String json = new JsonBuilder(dt).toString()	//same outcome
		String json = JsonOutput.toJson(dt)
		println json
	}
}

Running the above will result in :

Error

Exception in thread "main" java.lang.StackOverflowError
	at org.codehaus.groovy.reflection.ClassInfo.getClassInfo(ClassInfo.java:119)
	at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.getMetaClass(MetaClassRegistryImpl.java:261)
	at org.codehaus.groovy.runtime.InvokerHelper.getMetaClass(InvokerHelper.java:871)
	at org.codehaus.groovy.runtime.DefaultGroovyMethods.getMetaPropertyValues(DefaultGroovyMethods.java:364)
	at org.codehaus.groovy.runtime.DefaultGroovyMethods.getProperties(DefaultGroovyMethods.java:383)
	at groovy.json.JsonOutput.writeObject(JsonOutput.java:290)
	at groovy.json.JsonOutput.writeMap(JsonOutput.java:424)
	at groovy.json.JsonOutput.writeObject(JsonOutput.java:294)
	at groovy.json.JsonOutput.writeMap(JsonOutput.java:424)
	at groovy.json.JsonOutput.writeObject(JsonOutput.java:294)
	at groovy.json.JsonOutput.writeMap(JsonOutput.java:424)
        ...

Whether this be only the date, or an object including a Joda DateTime the outcome is the same.

Issue Links

• is duplicated by: GROOVY-8371 JsonBuilder throws StackOverflow when using java.time.*
• is related to: GROOVY-10438 DGM: getMetaPropertyValues and getProperties includes private entries
• links to: Github PR 371