Getting this error java.lang.ClassNotFoundException: jakarta.json.JsonException

[bhavya475]

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Java API client version

8.1.3

Java version

1.8

Elasticsearch Version

8.1.3

Problem description

Getting this error java.lang.ClassNotFoundException: jakarta.json.JsonException tags changed: → language-clients Failed to instantiate [co.elastic.clients.Elasticsearch.ElasticsearchClient]: Factory method 'client' threw exception; nested exception is java.lang.NoClassDefFoundError: jakarta/json/JsonException

@bean public ElasticsearchClient client() throws Exception { RestClient restClient = RestClient.builder( new HttpHost(esHost, esPort)).build();

// Create the transport with a Jackson mapper ElasticsearchTransport transport = new RestClientTransport( restClient, new JacksonJsonpMapper());

// And create the API client return new ElasticsearchClient(transport); } Dependency:

org.springframework.boot spring-boot-starter-data-jpa 2.6.7 mysql mysql-connector-java 8.0.29 org.springframework.boot spring-boot-starter-data-redis 2.6.7 redis.clients jedis 4.2.3 com.paytm ncmc-acquirer-bus-common 0.0.1-SNAPSHOT org.springframework.boot spring-boot-starter-test 2.6.7 test org.mockito mockito-all 1.10.19 test junit junit 4.13.2 test org.projectlombok lombok 1.18.24 co.elastic.clients elasticsearch-java 8.1.3 com.fasterxml.jackson.core jackson-databind 2.12.3 jakarta.json jakarta.json-api 2.0.1

[swallez]

This sounds similar to ClassNotFoundException: jakarta.json.spi.JsonProvider that other users have encountered.

Can you use the instructions provided at in https://www.elastic.co/guide/en/elasticsearch/client/java-api-client/current/installation.html#class-not-found-jsonprovider and report if this resolves the issue?

[ngsoftwaredev]

Hi,

I'm having the same issue with version 8.8.2 of the client. Adding the dependency does not solve it.

It is tied to using Spring Boot starter version 2.7 as parent:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.7.12</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

If I switch to version 3.1.1 I don't reproduce the issue...

And it's a real pain in the neck since I need this 2.7 version due to Azure dependencies that don't handle Spring 3...

@bhavya475 are you usgin Spring 2.7 also per chance?

[ngsoftwaredev]

I actually found a workaround, by chance I stumbled upon this StackOverflow post: https://stackoverflow.com/questions/68040881/jaxb-moxy-unmarshalling-json-runs-into-error-exception-in-thread-main-java-lan

Adding the dependency:

<dependency>
    <groupId>org.glassfish</groupId>
    <artifactId>jakarta.json</artifactId>
   <version>2.0.1</version>
</dependency>

solves the issue, no more ClassNotFoundException on startup.

[PriyanshMaheshwari]

Hi,

I'm facing similar issue Method threw 'java.lang.NoClassDefFoundError' exception and, even after adding the dependencies suggested by @ngsoftwaredev, the issue still persists.

pom.xml spring boot starter version

   <parent>
       <artifactId>spring-boot-starter-parent</artifactId>
       <groupId>org.springframework.boot</groupId>
       <version>2.6.6</version>
       <relativePath/>
   </parent>

pom.xml dependencies specific to ES

       <dependency>
           <groupId>co.elastic.clients</groupId>
           <artifactId>elasticsearch-java</artifactId>
           <version>8.13.4</version>
       </dependency>
       <dependency>
           <groupId>com.fasterxml.jackson.core</groupId>
           <artifactId>jackson-databind</artifactId>
           <version>2.17.0</version>
       </dependency>
       <dependency>
           <groupId>jakarta.json</groupId>
           <artifactId>jakarta.json-api</artifactId>
           <version>2.0.1</version>
       </dependency>
       <dependency>
           <groupId>org.glassfish</groupId>
           <artifactId>jakarta.json</artifactId>
           <version>2.0.1</version>
       </dependency>

Any help is appreciated. Thanks.