Elasticsearch 入门实战(5)-

本文主要介绍 Elasticsearch Java API Client 的使用，相关的环境及软件信息如下：CentOS 7.6.1810、Java 1.8.0_321(客户端用)、Elasticsearch 8.2.2。

1、Java API Client 的特点

• Strongly typed requests and responses for all Elasticsearch APIs.
• Blocking and asynchronous versions of all APIs.
• Use of fluent builders and functional patterns to allow writing concise yet readable code when creating complex nested structures.
• Seamless integration of application classes by using an object mapper such as Jackson or any JSON-B implementation.
• Delegates protocol handling to an http client such as the Java Low Level REST Client that takes care of all transport-level concerns: HTTP connection pooling, retries, node discovery, and so on.

2、引入依赖

<dependency>
    <groupId>co.elastic.clients</groupId>
    <artifactId>elasticsearch-java</artifactId>
    <version>8.2.2</version>
</dependency>