springboot 集成elasticsearch遇到的坑

最近开始学习elasticsearch，所以就想着在springboot里面集成一下elasticsearch，结果遇到了不少麻烦，下面总结一下，但愿大家和自己以后都少走弯路

首先声明下，本人开始学习elasticsearch的时候，官网最新版本已经更新到了5.6.x，本人用的是5.1.1，Springboot的稳定版本已经到了1.5.8

1.直接集成spring-boot-starter-data-elasticsearch ，项目能启动，但是控制台输出一直连接不上

后来发现终端的elasticsearch服务器在springboot启动的时候也有打印信息

仔细分析后发现有一句话很重要

Received message from unsupported version: [2.0.0] minimal compatible version is: [5.0.0]
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大概意思就是接收到不支持的2.0版本，目前的最小稳定版本已经是5.0 后来分析了springboot的maven依赖发现的确如此

然后我第一想到的解决办法就是更改springboot的maven依赖的elasticsearch版本

2.修改maven的elasticsearch后，找不到方法

我修改了maven的依赖

<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
		<elasticsearch.version>5.1.1</elasticsearch.version>
	</properties>
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也的确生效了

但是启动直接报错

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'testController': Unsatisfied dependency expressed through field 'articleSearchRepository'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'articleSearchRepository': Cannot resolve reference to bean 'elasticsearchTemplate' while setting bean property 'elasticsearchOperations'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'elasticsearchTemplate' defined in class path resource [org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchDataAutoConfiguration.class]: Unsatisfied dependency expressed through method 'elasticsearchTemplate' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'elasticsearchClient' defined in class path resource [org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.Client]: Factory method 'elasticsearchClient' threw exception; nested exception is java.lang.NoSuchMethodError: org.elasticsearch.client.transport.TransportClient.builder()Lorg/elasticsearch/client/transport/TransportClient$Builder;
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588) ~[spring-beans-4.3.12.RELEASE.jar:4.3.12.RELEASE]
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.3.12.RELEASE.jar:4.3.12.RELEASE]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366) ~[spring-beans-4.3.12.RELEASE.jar:4.3.12.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264) ~[spring-beans-4.3.12.RELEASE.jar:4.3.12.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) ~[spring-beans-4.3.12.RELEASE.jar:4.3.12.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutow