springboot 使用 elasticsearch（使用）

参考：Getting Started With Elasticsearch in Java Spring Boot

这一篇讲述springboot如何使用ES

开启ES，前一章已经讲了，不赘述。运行bat文件

一，POM

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-elasticsearch -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
            <version>2.6.3</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-elasticsearch -->
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-elasticsearch</artifactId>
            <version>4.3.1</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

二，application.yml

server:
  port: 9000
 
spring:
  elasticsearch:
    rest:
      uris: localhost:9200
      connection-timeout: 1s
      read-timeout: 1m
      password:
      username:

三，测试

启动项添加代码

@SpringBootApplication
public class TestApplication {
 
    public static void main(String[] args) {
        SpringApplication.run(TestApplication.class, args);
    }
    @Bean
    public boolean createTestIndex(RestHighLevelClient restHighLevelClient) throws Exception {
        try {
            DeleteIndexRequest deleteIndexRequest = new DeleteIndexRequest("hello-world");
            restHighLevelClient.indices().delete(deleteIndexRequest, RequestOptions.DEFAULT); // 1
        } catch (Exception ignored) {
        }
 
        CreateIndexRequest createIndexRequest = new CreateIndexRequest("hello-world");
        createIndexRequest.settings(
                Settings.builder().put("index.number_of_shards", 1)
                        .put("index.number_of_replicas", 0));
        restHighLevelClient.indices().create(createIndexRequest, RequestOptions.DEFAULT); // 2
 
        return true;
    }
}

四，效果