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https://issues.apache.org/jira/browse/GROOVY-9802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17685933#comment-17685933
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Eric Milles commented on GROOVY-9802:
-------------------------------------
[~paulk] Is this one of the issues fixed by the latest releases?
> groovy json - Unable to load FastStringService with java 11 http client
> ------------------------------------------------------------------------
>
> Key: GROOVY-9802
> URL: https://issues.apache.org/jira/browse/GROOVY-9802
> Project: Groovy
> Issue Type: Bug
> Components: JSON
> Affects Versions: 3.0.6
> Environment: Groovy Version: 3.0.6 JVM: 11.0.9 Vendor: Amazon.com
> Inc. OS: Linux
> Reporter: Matias Bjarland
> Priority: Major
>
> The following code:
> {code:java}
> import groovy.json.*
> import java.net.http.*
> import static java.net.http.HttpResponse.*
> def req = HttpRequest.newBuilder()
> .uri(URI.create('https://jsonplaceholder.typicode.com/todos/1'))
> .build()
> def parser = new JsonSlurper()
> // parser.parseText('{}') // <--- commenting in this line will make the code
> work
> def res = HttpClient.newHttpClient().sendAsync(req, BodyHandlers.ofString())
> .thenApply(r -> r.body())
> .thenApply(parser::parseText)
> .join()
> println "response: $res"
> {code}
> when run, will break with the following exception:
> {noformat}
> ─➤ groovy queryjson.groovy
>
> Caught: java.util.concurrent.CompletionException: java.lang.RuntimeException:
> Unable to load FastStringService
> java.util.concurrent.CompletionException: java.lang.RuntimeException: Unable
> to load FastStringService
> Caused by: java.lang.RuntimeException: Unable to load FastStringService
> at
> org.apache.groovy.json.internal.FastStringUtils.getService(FastStringUtils.java:56)
> at
> org.apache.groovy.json.internal.FastStringUtils.toCharArray(FastStringUtils.java:66)
> at
> org.apache.groovy.json.internal.BaseJsonParser.parse(BaseJsonParser.java:113)
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at com.sun.proxy.$Proxy17.apply(Unknown Source)
> {noformat}
> commenting in the indicated line will make the code work.
> I assume this is caused by the fact that the `thenApply` block of code is run
> from a different (pooled) thread and from a different classloader context.
> I get this, but in my mind having this simple example break is bad ergonomics
> and with the ubiquity of json APIs and the inclusion of a decent http client
> in java 11 I would expect this pattern to become quite common. I.e. wanting
> to create a no-deps groovy script / class which makes an http call and parses
> the returned json.
>
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