Caused by: java.lang.ClassNotFoundException: org.elasticsearch.transport.Netty3Plugin

问题

I'm using Spring Boot 2.0.3 Release and i have problem while instantiating org.elasticsearch.client.Client. My code:

Client client = new PreBuiltTransportClient(Settings.builder()
                .put("cluster.name", clustername)
                .build())
                .addTransportAddress(
new InetSocketTransportAddress(InetAddress.getByName(host), port)
);

This code give me the error:

Caused by: java.lang.NoClassDefFoundError: org/elasticsearch/transport/Netty3Plugin
at org.elasticsearch.transport.client.PreBuiltTransportClient.<clinit>(PreBuiltTransportClient.java:91) ~[transport-5.6.10.jar:5.6.10]
at kz.icode.idmatrix.config.ElasticsearchConfiguration.client(ElasticsearchConfiguration.java:56) ~[classes/:na]
at kz.icode.idmatrix.config.ElasticsearchConfiguration$$EnhancerBySpringCGLIB$$7e53ae93.CGLIB$client$0(<generated>) ~[classes/:na]
at kz.icode.idmatrix.config.ElasticsearchConfiguration$$EnhancerBySpringCGLIB$$7e53ae93$$FastClassBySpringCGLIB$$fef36179.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:361) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at kz.icode.idmatrix.config.ElasticsearchConfiguration$$EnhancerBySpringCGLIB$$7e53ae93.client(<generated>) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
... 99 common frames omitted

I use org.elasticsearch:elasticsearch:5.6.10 and org.elasticsearch.client:client:5.6.10.

回答1:

Not all dependencies are satisfied by only adding spring-boot-starter-data-elasticsearch.

It's necessary to explicitly define all remaining dependencies:

    <dependency>
        <groupId>org.elasticsearch.client</groupId>
        <artifactId>transport</artifactId>
        <version>${elasticsearch.version}</version>
    </dependency>

    <dependency>
        <groupId>org.elasticsearch.plugin</groupId>
        <artifactId>transport-netty4-client</artifactId>
        <version>${elasticsearch.version}</version>
    </dependency>

If you've declared a parent, most likely <version> tag can be omitted.

来源：https://stackoverflow.com/questions/51039938/caused-by-java-lang-classnotfoundexception-org-elasticsearch-transport-netty3p

标签

java

Spring

spring-boot

ElasticSearch

spring-data-elasticsearch