java - Elasticsearch RestHighLevelClient 缺少传递依赖项

Question

我正在尝试通过此依赖项使用 RestHighLevelClient

    <dependency>
        <groupId>org.elasticsearch.client</groupId>
        <artifactId>elasticsearch-rest-high-level-client</artifactId>
        <version>6.0.1</version>
    </dependency>

但我一直在 RestHighLevelClient 类中收到 ClassNotFoundExceptions。

当我尝试连接这个 bean 时(AwsAmsElasticsearchClientConfig.java :

@Bean(name = "elasticsearchRestClient")
public RestHighLevelClient getElasticsearchRestClient() {
    RestClientBuilder restClientBuilder = RestClient.builder(
            new HttpHost(HOST, PORT, SCHEME));

    restClientBuilder.setHttpClientConfigCallback(
            new RestClientBuilder.HttpClientConfigCallback() {
                @Override
                public HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpClientBuilder) {
                    httpClientBuilder.addInterceptorLast(buildAwsSigningRequestInterceptor());
                    // add SSL config if needed
                    //  httpClientBuilder.setSSLContext(null);
                    return httpClientBuilder;
                }
            }
    );

    return new RestHighLevelClient(restClientBuilder);
}

我收到这些错误:

19:51:11.026 ERROR [           main]                SpringApplication - Application startup failed
java.lang.ClassNotFoundException: org.elasticsearch.common.CheckedConsumer
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) [1 skipped]
    at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig.getElasticsearchRestClient(AwsAmsElasticsearchClientConfig.java:63) [2 skipped]
    at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07.CGLIB$getElasticsearchRestClient$0(<generated>)
Wrapped by: java.lang.NoClassDefFoundError: org/elasticsearch/common/CheckedConsumer
    at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig.getElasticsearchRestClient(AwsAmsElasticsearchClientConfig.java:63) [2 skipped]
    at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07.CGLIB$getElasticsearchRestClient$0(<generated>)
    at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07$$FastClassBySpringCGLIB$$fba1a4f2.invoke(<generated>)
    at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07.getElasticsearchRestClient(<generated>) [2 skipped]
    at java.lang.reflect.Method.invoke(Method.java:498) [3 skipped]
Wrapped by: java.lang.BootstrapMethodError: java.lang.NoClassDefFoundError: org/elasticsearch/common/CheckedConsumer
    at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig.getElasticsearchRestClient(AwsAmsElasticsearchClientConfig.java:63) [2 skipped]
    at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07.CGLIB$getElasticsearchRestClient$0(<generated>)
    at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07$$FastClassBySpringCGLIB$$fba1a4f2.invoke(<generated>)
    at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07.getElasticsearchRestClient(<generated>) [2 skipped]
    at java.lang.reflect.Method.invoke(Method.java:498) [3 skipped]
Wrapped by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.RestHighLevelClient]: Factory method 'getElasticsearchRestClient' threw exception; nested exception is java.lang.BootstrapMethodError: java.lang.NoClassDefFoundError: org/elasticsearch/common/CheckedConsumer
    at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:192) [148 skipped]
    at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:174)
    at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)
    at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)

看起来缺少大量的传递依赖

---

更新

原来这里发生了两件事。

1. 正如@miroh 在下面指出的那样，我需要明确定义 org.elasticsearch:elasticserach:6.0.1 依赖项，这样我就不会引入错误的版本。不知道为什么这是必要的，但似乎确实是必要的……(此处也引用:https://github.com/elastic/elasticsearch/issues/26959)

2. 我的项目是一个具有许多其他依赖项的多模块 Spring 项目。显然，某些 Spring/Springboot 依赖项依赖于 spring-data-elasticsearch，后者依赖于 org.elasticsearch:elasticsearch:2.4.6。我通过将 elasticsearch:6.0.1 版本添加到父级 pom.xml 的依赖管理部分来解决这些冲突的 elasticsearch 版本。这告诉 Maven 在存在依赖冲突时使用版本 6.0.1。

Answer 1

尝试添加以下依赖项。

<dependency>
    <groupId>org.elasticsearch</groupId>
    <artifactId>elasticsearch</artifactId>
    <version>6.0.1</version>
</dependency>

<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-client</artifactId>
    <version>6.0.1</version>
</dependency>