本文小编为大家详细介绍“ElasticSearch整合SpringBoot搭建配置的方法是什么”，内容详细，步骤清晰，细节处理妥当，希望这篇“ElasticSearch整合SpringBoot搭建...
本文小编为大家详细介绍“ElasticSearch整合SpringBoot搭建配置的方法是什么”，内容详细，步骤清晰，细节处理妥当，希望这篇“ElasticSearch整合SpringBoot搭建配置的方法是什么”文章能帮助大家解决疑惑，下面跟着小编的思路慢慢深入，一起来学习新知识吧。
项目搭建
老规矩，先建maven项目,下面是我的pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>springboot-es-all</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<java.version>1.8</java.version>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.3.RELEASE</version>
</parent>
<dependencies>
<!--test-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
<!--ElasticSearch 客户端依赖-->
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-client</artifactId>
<version>7.8.0</version>
</dependency>
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>7.8.0</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-high-level-client</artifactId>
<version>7.8.0</version>
</dependency>
<!--Hutool依赖-->
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.8.4</version>
</dependency>
<!--fast-json-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.58</version>
</dependency>
<dependency>
<groupId> org.slf4j </groupId>
<artifactId> slf4j-api </artifactId>
<version> 1.6.4 </version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.7.25</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>2.1.3.RELEASE</version>
</plugin>
</plugins>
</build>
</project>
这里我使用的是elasticsearch-rest-high-level-client官方客户端,建议大家尽量用官方的，因为随着es的不断升级，很多api都过时了，如果你使用spring-boot-starter-data-elasticsearch这个要依赖社区去维护,很多新特性你没法使用到,也会存在安全性问题。
配置客户端
启动类:
@SpringBootApplication
public class EsStudyApplication {
public static void main(String[] args) {
SpringApplication.run(EsStudyApplication.class, args);
}
}配置文件 application.yml:
server:
port: 9000
elasticsearch:
host: 0.0.0.0
port: 9200
username:
password:
客户端配置 config.EsClientConfig:
@Configuration
public class EsClientConfig {
@Value("${elasticsearch.host}")
private String host;
@Value("${elasticsearch.port}")
private int port;
@Value("${elasticsearch.username}")
private String userName;
@Value("${elasticsearch.password}")
private String password;
@Bean
public RestHighLevelClient restHighLevelClient() {
final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(userName, password));
RestHighLevelClient restHighLevelClient = new RestHighLevelClient(
RestClient.builder(new HttpHost( host, port, "http")).setHttpClientConfigCallback(httpClientBuilder -> {
httpClientBuilder.setMaxConnTotal(500);
httpClientBuilder.setMaxConnPerRoute(300);
return httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
})
);
return restHighLevelClient;
}
}然后客户端我们就配好了，客户端的配置其实还有很多，感兴趣的同学自行查阅。后续使用的时候，直接导入RestHighLevelClient实例就好了
接着启动它，如果控制没有报错，说明配置没啥问题了， 记得要开启es服务~
索引API初探 & Index API
下面我们写一点测试用例，来验证我们是否可以操作es，为了方便演示，这里直接使用SpringBootTest来测试，大家平时在写springboot项目，类测试的时候也可以这么做
ping
新建api.IndexApi,调用ping()方法来测试是否链接成功:
@Slf4j
@SpringBootTest
public class IndexApi {
/**
* es 索引
*/
public static final String index = "study";
@Autowired
private RestHighLevelClient client;
@Test
public void ping() throws IOException {
if(client.ping(RequestOptions.DEFAULT)) {
log.info("链接成功");
}else {
log.info("链接失败 !");
}
}
}点击IndexApi左上角的绿色箭头启动测试用例, 如果报错，尝试添加以下 注解
@RunWith(SpringRunner.class)
@SpringBootTest(classes = { EsStudyApplication.class })
public class IndexApi {....}返回:
链接成功
说明客户端与es服务端是通的
创建索引 & create
通过前面的学习，有了一定的基础之后，回到代码中其实就是调调方法，因为你知道了这个代码的逻辑做了什么操作。下面来看下如何创建索引：
/**
* 创建索引
*/
@Test
public void createIndex() throws IOException {
CreateIndexRequest request = new CreateIndexRequest(index);
CreateIndexResponse createIndexResponse = client.indices().create(request, RequestOptions.DEFAULT);
log.info("创建索引 ===> "+ JSONObject.toJSONString(createIndexResponse)); // 创建索引 ===> {"acknowledged":true,"fragment":false,"shardsAcknowledged":true}
}大家可以返回到kibana中查看索引是否被创建，从而验证代码执行是否成功
添加别名:
// alias
request.alias(new Alias("study_alias"));索引设置settings:
// index settings
request.settings(
Settings.builder()
.put("index.number_of_shards", 3)
.put("index.number_of_replicas", 2)
);索引映射mapping:
// index mappings
// {
// "mapping": {
// "_doc": {
// "properties": {
// "name": {
// "type": "text"
// }
// }
// }
// }
// }
XContentBuilder builder = XContentFactory.jsonBuilder();
builder.startObject();
{
builder.startObject("properties");
{
builder.startObject("name");
{
builder.field("type", "text");
}
builder.endObject();
}
builder.endObject();
}
builder.endObject();
request.mapping(builder);设置请求超时时间:
// 请求设置
request.setTimeout(TimeValue.timeValueMinutes(1));
索引是否存在 & exist
/**
* 判断索引是否存在
* @throws IOException
*/
@Test
public void existIndex() throws IOException {
GetIndexRequest request = new GetIndexRequest(index);
boolean exists = client.indices().exists(request, RequestOptions.DEFAULT);
log.info("索引{}存在 ===> {}", index, exists);
}删除索引
/**
* 删除索引
* @throws IOException
*/
@Test
public void delIndex() throws IOException {
DeleteIndexRequest request = new DeleteIndexRequest(index);
AcknowledgedResponse delete = client.indices().delete(request, RequestOptions.DEFAULT);
log.info("删除索引 ===> {}", JSONObject.toJSONString(delete)); // 删除索引 ===> {"acknowledged":true,"fragment":false}
}读到这里，这篇“ElasticSearch整合SpringBoot搭建配置的方法是什么”文章已经介绍完毕，想要掌握这篇文章的知识点还需要大家自己动手实践使用过才能领会，如果想了解更多相关内容的文章，欢迎关注捷杰建站行业资讯频道。
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