[jira] [Commented] (GROOVY-7682) JsonBuilder or JsonOutput incompatible with JodaTime

["John Wagenleitner (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GROOVY-7682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15605894#comment-15605894 ] 

John Wagenleitner commented on GROOVY-7682:
-------------------------------------------

A workaround for this in 2.5 would be the use of the new {{JsonGenerator}}.  A custom converter could be registered to handle correctly outputting the JodaTime or JSR310 dates.  

{code}
import groovy.json.*

import java.time.LocalDateTime
import static java.time.format.DateTimeFormatter.ISO_LOCAL_DATE_TIME

def generator = new JsonGenerator.Options()
                    .addConverter(LocalDateTime) {
                        '"' + it.format(ISO_LOCAL_DATE_TIME) + '"'
                    }
                    .build()

// Following will produce StackOverflowError
//JsonOutput.toJson(LocalDateTime.now())

// Following will print (for example): "2016-10-25T10:08:42.539"
println generator.toJson(LocalDateTime.now())
println new JsonBuilder(LocalDateTime.now(), generator)
{code}

> JsonBuilder or JsonOutput incompatible with JodaTime
> ----------------------------------------------------
>
>                 Key: GROOVY-7682
>                 URL: https://issues.apache.org/jira/browse/GROOVY-7682
>             Project: Groovy
>          Issue Type: Bug
>          Components: JSON
>    Affects Versions: 2.4.5
>         Environment: JVM: 1.8.0_65 (Oracle)
> Mac OS X 10.11.1 (El Capitan)
>            Reporter: Jean-Philippe Pellerin
>              Labels: DateTime,, Json
>
> Using groovy's built-in methods to serialize Joda DateTime to JSON always conclude in a {{StackOverflowError}}.
> {code:title=ExampleMethod|type=java}
> package com.mgd
> import groovy.json.JsonOutput
> import org.joda.time.DateTime
> import org.joda.time.format.DateTimeFormat
> import org.joda.time.format.DateTimeFormatter
> import com.sun.beans.util.Cache.Kind.Strong
> 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
> 		Strong json = JsonOutput.toJson(dt)
> 		println "\n${json}\n"
> 	}
> }
> {code}
> Running the above will result in : 
> {code: title=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)
>         ...
> {code}
> Whether this be only the date, or an object including a Joda DateTime the outcome is the same.



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