elasticsearch java.lang.NoSuchMethodError: org.apache.http.client.utils.URLEncodedUtils.formatSegments

Question

I'm trying this basic elasticsearch example from there guide to use java client API in a spring boot project.

but it gives me the following error when running:

java.lang.NoSuchMethodError: org.apache.http.client.utils.URLEncodedUtils.formatSegments([Ljava/lang/String;)Ljava/lang/String;

here is my POM file.

the code:

public void retrieveAuditMessages() throws IOException {
        // Create the low-level client
        RestClient restClient = RestClient.builder(
            new HttpHost("localhost", 9200)
        ).build();

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

    // Create the API client
    ElasticsearchClient client = new ElasticsearchClient(transport);
    
    SearchResponse<String> search = client.search(s -> s
            .index("logstash-wildfly*")
            .query(q -> q
                    .term(t -> t
                            .field("host")
                            .value(v -> v.stringValue("aboSaadoosh"))
                    )
            ),
            String.class);

    for(Hit<String> hit: search.hits().hits())
    {
        System.out.println(hit.source());
    }
}

I guess it's a problem with dependencies, but I don't know how to solve it.

I'm using Elasticsearch version 8.1.1 java client API and spring boot 1.5.7.RELEASE

Answer 1

I solved this by adding org.apache.httpcomponents:httpclient:4.5.13 explicitly in the POM file (instead of version org.apache.httpcomponents:httpclient:4.5.3 included by co.elastic.clients:elasticsearch-java:8.1.1)

<dependency>
  <groupId>org.apache.httpcomponents</groupId>
  <artifactId>httpclient</artifactId>
  <version>4.5.13</version>
</dependency>

I don't know if this is the correct way to solve it but anyway it worked for me.