四.Java操作elasticsearch

4.1 Java连接ES

创建一个maven工程

导入依赖

elasticsearch官方jar包
elasticsearch的高级API
junit
lombok

pom.xml

<dependencies>
<!--    1.elasticsearch-->
<dependency>
    <groupId>org.elasticsearch</groupId>
    <artifactId>elasticsearch</artifactId>
    <version>6.5.4</version>
</dependency>
<!--    2. elasticsearch的高级API-->
<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-high-level-client</artifactId>
    <version>6.5.4</version>
</dependency>
<!--    3.junit-->
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
</dependency>
<!--    4. lombok-->
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.16.22</version>
</dependency>
</dependencies>

创建类ESClient.java

测试连接