# \[JAVA\] Unexpected JSON event 'VALUE\_TRUE' instead of '\[KEY\_NAME, VALUE\_STRING\]'

**URL:** <https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740>\
**Category:** Elasticsearch\
**Tags:** language-clients\
**Created:** [January 29, 2022, 1:34am UTC](https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740 "2022-01-29T01:34:33Z")\
**Posts on this page:** 12\
**Page:** 1

<div class="post-metadata">

**Author:** ![wxh](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wxh/32/101057_2.png) [@wxh](https://discuss.elastic.co/u/wxh)\
**Post date:** [January 29, 2022, 1:34am UTC](https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740/1 "2022-01-29T01:34:34Z")

</div>

I am writing some code to manage Elasticsearch templates. When running the code snippet below I am getting

```auto
co.elastic.clients.json.UnexpectedJsonEventException: Unexpected JSON event 'VALUE_FALSE' instead of '[KEY_NAME, VALUE_STRING]'

```

Code

```java
// simplified code for demo this issue, but does reproduce.
private static stackoverflowIssue(ElasticsearchClient client) {
  GetIndexTemplateResponse r = client.indices().getIndexTemplate();
}

```

ES info:

```auto
{
  "name" : "1ec11a1cb3c9",
  "cluster_name" : "docker-cluster",
  "cluster_uuid" : "7e0zLYxmQsST0EllSlc_KA",
  "version" : {
    "number" : "7.16.2",
    "build_flavor" : "default",
    "build_type" : "docker",
    "build_hash" : "2b937c44140b6559905130a8650c64dbd0879cfb",
    "build_date" : "2021-12-18T19:42:46.604893745Z",
    "build_snapshot" : false,
    "lucene_version" : "8.10.1",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

```

ES dependency in `pom.xml`

```auto
        <dependency>
            <groupId>co.elastic.clients</groupId>
            <artifactId>elasticsearch-java</artifactId>
            <version>7.16.3</version>
        </dependency>

        <dependency>
            <groupId>jakarta.json</groupId>
            <artifactId>jakarta.json-api</artifactId>
            <version>2.0.1</version>
        </dependency>

```

Please help, Thanks!

Full callstack

```auto
Caused by: co.elastic.clients.json.UnexpectedJsonEventException: Unexpected JSON event 'VALUE_TRUE' instead of '[KEY_NAME, VALUE_STRING]'
	at co.elastic.clients.json.JsonpUtils.ensureAccepts(JsonpUtils.java:68) ~[elasticsearch-java-7.16.3.jar:na]
JsonpUtils.java:68
	at co.elastic.clients.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:74) ~[elasticsearch-java-7.16.3.jar:na]
JsonpDeserializer.java:74
	at co.elastic.clients.json.ObjectDeserializer$FieldObjectDeserializer.deserialize(ObjectDeserializer.java:72) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:72
	at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:176) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:176
	at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:137) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:137
	at co.elastic.clients.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:75) ~[elasticsearch-java-7.16.3.jar:na]
JsonpDeserializer.java:75
	at co.elastic.clients.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:79) ~[elasticsearch-java-7.16.3.jar:na]
ObjectBuilderDeserializer.java:79
	at co.elastic.clients.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:43) ~[elasticsearch-java-7.16.3.jar:na]
DelegatingDeserializer.java:43
	at co.elastic.clients.json.ObjectDeserializer$FieldObjectDeserializer.deserialize(ObjectDeserializer.java:72) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:72
	at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:176) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:176
	at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:137) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:137
	at co.elastic.clients.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:75) ~[elasticsearch-java-7.16.3.jar:na]
JsonpDeserializer.java:75
	at co.elastic.clients.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:79) ~[elasticsearch-java-7.16.3.jar:na]
ObjectBuilderDeserializer.java:79
	at co.elastic.clients.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:43) ~[elasticsearch-java-7.16.3.jar:na]
DelegatingDeserializer.java:43
	at co.elastic.clients.json.ObjectDeserializer$FieldObjectDeserializer.deserialize(ObjectDeserializer.java:72) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:72
	at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:176) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:176
	at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:137) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:137
	at co.elastic.clients.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:75) ~[elasticsearch-java-7.16.3.jar:na]
JsonpDeserializer.java:75
	at co.elastic.clients.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:79) ~[elasticsearch-java-7.16.3.jar:na]
ObjectBuilderDeserializer.java:79
	at co.elastic.clients.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:43) ~[elasticsearch-java-7.16.3.jar:na]
DelegatingDeserializer.java:43
	at co.elastic.clients.json.ObjectDeserializer$FieldObjectDeserializer.deserialize(ObjectDeserializer.java:72) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:72
	at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:176) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:176
	at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:137) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:137
	at co.elastic.clients.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:85) ~[elasticsearch-java-7.16.3.jar:na]
ObjectBuilderDeserializer.java:85
	at co.elastic.clients.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:48) ~[elasticsearch-java-7.16.3.jar:na]
DelegatingDeserializer.java:48
	at co.elastic.clients.json.JsonpDeserializerBase$ArrayDeserializer.deserialize(JsonpDeserializerBase.java:320) ~[elasticsearch-java-7.16.3.jar:na]
JsonpDeserializerBase.java:320
	at co.elastic.clients.json.JsonpDeserializerBase$ArrayDeserializer.deserialize(JsonpDeserializerBase.java:285) ~[elasticsearch-java-7.16.3.jar:na]
JsonpDeserializerBase.java:285
	at co.elastic.clients.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:75) ~[elasticsearch-java-7.16.3.jar:na]
JsonpDeserializer.java:75
	at co.elastic.clients.json.ObjectDeserializer$FieldObjectDeserializer.deserialize(ObjectDeserializer.java:72) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:72
	at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:176) ~[elasticsearch-java-7.16.3.jar:na]
ObjectDeserializer.java:176
	at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:137) ~[elasticsearch-java-7.16.3.jar:na]
	at co.elastic.clients.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:75) ~[elasticsearch-java-7.16.3.jar:na]
JsonpDeserializer.java:75
	at co.elastic.clients.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:79) ~[elasticsearch-java-7.16.3.jar:na]
ObjectBuilderDeserializer.java:79
	at co.elastic.clients.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:43) ~[elasticsearch-java-7.16.3.jar:na]
DelegatingDeserializer.java:43
	at co.elastic.clients.transport.rest_client.RestClientTransport.decodeResponse(RestClientTransport.java:325) ~[elasticsearch-java-7.16.3.jar:na]
RestClientTransport.java:325
	at co.elastic.clients.transport.rest_client.RestClientTransport.getHighLevelResponse(RestClientTransport.java:291) ~[elasticsearch-java-7.16.3.jar:na]
RestClientTransport.java:291
	at co.elastic.clients.transport.rest_client.RestClientTransport.performRequest(RestClientTransport.java:144) ~[elasticsearch-java-7.16.3.jar:na]
RestClientTransport.java:144
	at co.elastic.clients.elasticsearch.indices.ElasticsearchIndicesClient.getIndexTemplate(ElasticsearchIndicesClient.java:1097) ~[elasticsearch-java-7.16.3.jar:na]

```

---

<div class="post-metadata">

**Author:** ![swallez](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/swallez/32/11972_2.png) [@swallez](https://discuss.elastic.co/u/swallez)\
**Post date:** [January 29, 2022, 11:40am UTC](https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740/2 "2022-01-29T11:40:29Z")

</div>

Thanks for the report. Can you provide the result of calling `GET /_index_template` on your Elasticsearch cluster (redact any sensitive string if needed)? That will help us find the cause.

---

<div class="post-metadata">

**Author:** ![wxh](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wxh/32/101057_2.png) [@wxh](https://discuss.elastic.co/u/wxh)\
**Post date:** [January 29, 2022, 2:55pm UTC](https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740/3 "2022-01-29T14:55:40Z")

</div>

The output is too long to paste here.

See [GET \_index\_template - Pastebin](https://pastebin.pl/view/f517fc39)

---

<div class="post-metadata">

**Author:** ![stephenb](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/stephenb/32/40856_2.png) [@stephenb](https://discuss.elastic.co/u/stephenb)\
**Post date:** [January 29, 2022, 3:07pm UTC](https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740/5 "2022-01-29T15:07:30Z")

</div>

@wxh Typically folks use [pastebin](https://pastebin.pl/) or a gist to post results/ code / logs etc makes it easier for those trying to help.

Perhaps you could use one of those... That long encoded string is unwieldy 🙂

---

<div class="post-metadata">

**Author:** ![wxh](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wxh/32/101057_2.png) [@wxh](https://discuss.elastic.co/u/wxh)\
**Post date:** [January 29, 2022, 3:50pm UTC](https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740/6 "2022-01-29T15:50:00Z")

</div>

Sure. I've updated my previous reply with [a link to pastebin](https://pastebin.pl/view/f517fc39).

---

<div class="post-metadata">

**Author:** ![stephenb](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/stephenb/32/40856_2.png) [@stephenb](https://discuss.elastic.co/u/stephenb)\
**Post date:** [January 29, 2022, 7:53pm UTC](https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740/7 "2022-01-29T19:53:18Z")

</div>

Which Java Client are you using...

This does not look like the new Java Client [Here](https://www.elastic.co/guide/en/elasticsearch/client/java-api-client/current/index.html) (Corrected)

Looks like the Deprecated Version [Here](https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/java-rest-high-get-templates.html) (Incorrect)

On the deprecated version

Seems like you are missing the argument for the name of the template

> [@wxh](#):
>
> ` client.indices().getIndexTemplate();`

> **[Get Templates API | Java REST Client \[7.17\] | Elastic](https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/java-rest-high-get-templates.html)**

```auto
GetIndexTemplatesRequest request = new GetIndexTemplatesRequest("my-template"); 
request = new GetIndexTemplatesRequest("template-1", "template-2"); 
request = new GetIndexTemplatesRequest("my-*"); 

```

Or is that too easy... 🙂

BTW I took a quick look at the result of the `GET /_index_template` and I did not see anything as a glaring issue.

---

<div class="post-metadata">

**Author:** ![wxh](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wxh/32/101057_2.png) [@wxh](https://discuss.elastic.co/u/wxh)\
**Post date:** [January 29, 2022, 11:12pm UTC](https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740/8 "2022-01-29T23:12:58Z")

</div>

The `getIndexTemplate()` method implementation can be found at

> <https://github.com/elastic/elasticsearch-java/blob/7.16/java-client/src/main/java/co/elastic/clients/elasticsearch/indices/ElasticsearchIndicesClient.java#L1125>

Is that the deprecate version?

---

<div class="post-metadata">

**Author:** ![stephenb](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/stephenb/32/40856_2.png) [@stephenb](https://discuss.elastic.co/u/stephenb)\
**Post date:** [January 29, 2022, 11:24pm UTC](https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740/9 "2022-01-29T23:24:44Z")

</div>

Nope You have the correct version.... apologies for the confusion...  
That is the new [Elasticsearch Java API Client](https://www.elastic.co/guide/en/elasticsearch/client/java-api-client/current/index.html)

Hmm I think we will need some help from @swallez

And BTW Welcome to the community.

---

<div class="post-metadata">

**Author:** ![wxh](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wxh/32/101057_2.png) [@wxh](https://discuss.elastic.co/u/wxh)\
**Post date:** [January 29, 2022, 11:39pm UTC](https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740/10 "2022-01-29T23:39:21Z")

</div>

Thanks. I recently picked up Elasticsearch again since I dropped in 2 years ago. A lot changes have happened.

Anyway, I just came up with a minimal Maven project to demo the issue.

> **[View Paste 6cK4T](https://paste.ee/p/6cK4T)**
>
> Paste.ee - View Paste 6cK4T

(not a fan of dropbox or gdrive, so base64 encoded tarball again. 🙂 )

Run the maven project you will get the exact error message with exact callstack in the first post.

```bash
$ mvn spring-boot:run
[INFO] Scanning for projects...
[INFO] 
[INFO] --------------------------< com.example:demo >--------------------------
[INFO] Building demo 0.0.1-SNAPSHOT
[INFO] --------------------------------[jar]---------------------------------
[INFO] 
[INFO] >>> spring-boot-maven-plugin:2.5.9:run (default-cli) > test-compile @ demo >>>
[INFO] 
[INFO] --- maven-resources-plugin:3.2.0:resources (default-resources) @ demo ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Using 'UTF-8' encoding to copy filtered properties files.
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ demo ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-resources-plugin:3.2.0:testResources (default-testResources) @ demo ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Using 'UTF-8' encoding to copy filtered properties files.
[INFO] skip non existing resourceDirectory /home/opc/junk/demo/src/test/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.1:testCompile (default-testCompile) @ demo ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] <<< spring-boot-maven-plugin:2.5.9:run (default-cli) < test-compile @ demo <<<
[INFO] 
[INFO] 
[INFO] --- spring-boot-maven-plugin:2.5.9:run (default-cli) @ demo ---
[INFO] Attaching agents: []

  . _______ _ _
 /\\ / ___'___ _ _(_)_ ____ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/ ___)| |_)| | | | | || (_| | ) ) ) )
  ' | ____| .__ |_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot :: (v2.5.9)

2022-01-29 23:41:00.414 INFO 649221 --- [main] com.example.demo.Demo : Starting Demo using Java 1.8.0_311 on cloudberry-2 with PID 649221 (/home/opc/junk/demo/target/classes started by opc in /home/opc/junk/demo)
2022-01-29 23:41:00.416 INFO 649221 --- [main] com.example.demo.Demo : No active profile set, falling back to default profiles: default
2022-01-29 23:41:01.136 WARN 649221 --- [main] s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'service' defined in file [/home/opc/junk/demo/target/classes/com/example/demo/Service.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.example.demo.Service]: Constructor threw exception; nested exception is co.elastic.clients.json.UnexpectedJsonEventException: Unexpected JSON event 'VALUE_TRUE' instead of '[KEY_NAME, VALUE_STRING]'
2022-01-29 23:41:01.144 INFO 649221 --- [main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-01-29 23:41:01.157 ERROR 649221 --- [main] o.s.boot.SpringApplication : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'service' defined in file [/home/opc/junk/demo/target/classes/com/example/demo/Service.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.example.demo.Service]: Constructor threw exception; nested exception is co.elastic.clients.json.UnexpectedJsonEventException: Unexpected JSON event 'VALUE_TRUE' instead of '[KEY_NAME, VALUE_STRING]'
        at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:315) ~[spring-beans-5.3.15.jar:5.3.15]
        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:296) ~[spring-beans-5.3.15.jar:5.3.15]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1372) ~[spring-beans-5.3.15.jar:5.3.15]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1222) ~[spring-beans-5.3.15.jar:5.3.15]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.15.jar:5.3.15]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.15.jar:5.3.15]
        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.15.jar:5.3.15]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.15.jar:5.3.15]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.15.jar:5.3.15]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.15.jar:5.3.15]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:953) ~[spring-beans-5.3.15.jar:5.3.15]
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.15.jar:5.3.15]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.15.jar:5.3.15]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) [spring-boot-2.5.9.jar:2.5.9]
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:447) [spring-boot-2.5.9.jar:2.5.9]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) [spring-boot-2.5.9.jar:2.5.9]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1356) [spring-boot-2.5.9.jar:2.5.9]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1345) [spring-boot-2.5.9.jar:2.5.9]
        at com.example.demo.Demo.main(Demo.java:10) [classes/:na]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.example.demo.Service]: Constructor threw exception; nested exception is co.elastic.clients.json.UnexpectedJsonEventException: Unexpected JSON event 'VALUE_TRUE' instead of '[KEY_NAME, VALUE_STRING]'
        at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:224) ~[spring-beans-5.3.15.jar:5.3.15]
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:117) ~[spring-beans-5.3.15.jar:5.3.15]
        at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:311) ~[spring-beans-5.3.15.jar:5.3.15]
        ... 18 common frames omitted
Caused by: co.elastic.clients.json.UnexpectedJsonEventException: Unexpected JSON event 'VALUE_TRUE' instead of '[KEY_NAME, VALUE_STRING]'
        at co.elastic.clients.json.JsonpUtils.ensureAccepts(JsonpUtils.java:68) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:74) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer$FieldObjectDeserializer.deserialize(ObjectDeserializer.java:72) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:176) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:137) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:75) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:79) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:43) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer$FieldObjectDeserializer.deserialize(ObjectDeserializer.java:72) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:176) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:137) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:75) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:79) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:43) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer$FieldObjectDeserializer.deserialize(ObjectDeserializer.java:72) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:176) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:137) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:75) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:79) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:43) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer$FieldObjectDeserializer.deserialize(ObjectDeserializer.java:72) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:176) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:137) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:85) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:48) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.JsonpDeserializerBase$ArrayDeserializer.deserialize(JsonpDeserializerBase.java:320) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.JsonpDeserializerBase$ArrayDeserializer.deserialize(JsonpDeserializerBase.java:285) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:75) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer$FieldObjectDeserializer.deserialize(ObjectDeserializer.java:72) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:176) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:137) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:75) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:79) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:43) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.transport.rest_client.RestClientTransport.decodeResponse(RestClientTransport.java:325) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.transport.rest_client.RestClientTransport.getHighLevelResponse(RestClientTransport.java:291) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.transport.rest_client.RestClientTransport.performRequest(RestClientTransport.java:144) ~[elasticsearch-java-7.16.3.jar:na]
        at co.elastic.clients.elasticsearch.indices.ElasticsearchIndicesClient.getIndexTemplate(ElasticsearchIndicesClient.java:1126) ~[elasticsearch-java-7.16.3.jar:na]
        at com.example.demo.Service.<init>(Service.java:16) ~[classes/:na]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_311]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_311]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_311]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_311]
        at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:211) ~[spring-beans-5.3.15.jar:5.3.15]
        ... 20 common frames omitted

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.246 s
[INFO] Finished at: 2022-01-29T23:41:01Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.5.9:run (default-cli) on project demo: Application finished with exit code: 1 -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

```

---

<div class="post-metadata">

**Author:** ![wxh](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wxh/32/101057_2.png) [@wxh](https://discuss.elastic.co/u/wxh)\
**Post date:** [January 30, 2022, 12:12am UTC](https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740/11 "2022-01-30T00:12:22Z")

</div>

I also managed to repro this with 5 lines of code:

```java
        ObjectMapper om = new ObjectMapper();
        Response r = restClient.performRequest(new Request("GET", "_index_template"));
        JsonParser parser = new JacksonJsonpParser(om.createParser(r.getEntity().getContent()));
        JsonpMapper mapper = new JacksonJsonpMapper();
        GetIndexTemplateResponse._DESERIALIZER.deserialize(parser, mapper); // <-- boom!

```

---

<div class="post-metadata">

**Author:** ![swallez](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/swallez/32/11972_2.png) [@swallez](https://discuss.elastic.co/u/swallez)\
**Post date:** [January 31, 2022, 5:43pm UTC](https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740/12 "2022-01-31T17:43:53Z")

</div>

I was able to reproduce it from the pastebin output (thanks for providing it!) and decoding it as follows:

```java
InputStream is = this.getClass().getResourceAsStream("discuss-295740.json");
JsonParser parser = mapper.jsonProvider().createParser(is);
try {
    JsonpDeserializer.of(GetIndexTemplateResponse.class).deserialize(parser, mapper);
} catch(UnexpectedJsonEventException e) {
    JsonLocation loc = e.getLocation();
    fail(loc.getLineNumber() + ":" + loc.getColumnNumber());
}

```

The result is `419:29`, which points to:

```auto
"mappings" : {
   ...
   "dynamic" : true, // <-- line 419
   "dynamic_templates" : [],
   ...

```

This is an incarnation of this isssue on read rather than on write: [Serialize DynamicMapping values as booleans instead of string · Issue #139 · elastic/elasticsearch-java · GitHub](https://github.com/elastic/elasticsearch-java/issues/139)

Please watch that issue for resolution.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 28, 2022, 5:44pm UTC](https://discuss.elastic.co/t/java-unexpected-json-event-value-true-instead-of-key-name-value-string/295740/13 "2022-02-28T17:44:07Z")

</div>

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