springboot elasticsearch简单demo

本文介绍了如何在SpringBoot项目中整合Elasticsearch,包括引入依赖、建立连接及存储数据等步骤。

摘要生成于 C知道 ,由 DeepSeek-R1 满血版支持, 前往体验 >

springboot 整合 elasticsearch 非常简单

第一步:引入maven依赖

<dependency>
			<groupId>org.elasticsearch.client</groupId>
			<artifactId>transport</artifactId>
			<version>6.0.0</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-elasticsearch</artifactId>
            <version>3.0.2.BUILD-SNAPSHOT</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
			 <version>2.9.4</version>
		</dependency>
		<dependency>
			<groupId>net.java.dev.jna</groupId>
			<artifactId>jna</artifactId>
			 <version>3.4.0</version>
		</dependency>

第二步建立连接

                        //连接配置
			Settings settings = Settings.builder()
					.put("cluster.name", "")//这个cluster.name的值必须和es中elasticsearch.yml里的名字一致,否则会报not part of the cluster Cluster 错误
					.put("client.transport.ignore_cluster_name",true)//忽略名字的校验
					.build();
			TransportClient client = new PreBuiltTransportClient(settings)
					.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
			BulkRequestBuilder bulkRequestBuilder = client.prepareBulk();
				SearchItem searchItem = new SearchItem();
				String image=searchItem.getProductImageBig();
                                searchItem.setId(1);
                                searchItem.setProductImageBig("http://123123.jpg");
				String json = JSON.json(searchItem);//直接将对象转成json,在存入es的时候,es会自动检测并预测字段值的类型。当然如果想更加精确可以在SearchItem对象中用@Document注解
				IndexRequestBuilder indexRequestBuilder = client.prepareIndex("数据库名", "表名", String.valueOf(searchItem.getId())).setSource(json);
				bulkRequestBuilder.add(indexRequestBuilder);
				BulkResponse response = bulkRequestBuilder.get();
				log.info("=============response={}",response);
这样就把数据存入es中了,这是最简便的一个demo,如果想在项目中使用,可以对其进行详细配置,这个在下篇文章中会介绍。



好的,下面是一个简单的 Spring Boot 集成 Elasticsearch 的示例: 1. 首先,需要在 pom.xml 文件中添加 Elasticsearch 的依赖: ```xml <dependency> <groupId>org.elasticsearch.client</groupId> <artifactId>elasticsearch-rest-high-level-client</artifactId> <version>7.10.2</version> </dependency> ``` 2. 然后,在 application.yml 或 application.properties 中配置 Elasticsearch 的地址和端口: ```yaml spring: data: elasticsearch: cluster-name: elasticsearch cluster-nodes: localhost:9200 ``` 3. 创建一个实体类,用于映射 Elasticsearch 中的数据: ```java @Data @NoArgsConstructor @AllArgsConstructor @Builder @Document(indexName = "user", shards = 1, replicas = 0) public class User { @Id private String id; private String name; private Integer age; } ``` 4. 创建一个 Elasticsearch 的操作类,用于增删改查: ```java @Component public class ElasticsearchOperations { private final ElasticsearchRestTemplate elasticsearchRestTemplate; public ElasticsearchOperations(ElasticsearchRestTemplate elasticsearchRestTemplate) { this.elasticsearchRestTemplate = elasticsearchRestTemplate; } public void save(User user) { IndexQuery indexQuery = new IndexQueryBuilder() .withIndexName("user") .withObject(user) .build(); elasticsearchRestTemplate.index(indexQuery); } public void delete(String id) { elasticsearchRestTemplate.delete("user", id); } public void update(User user) { IndexRequest indexRequest = new IndexRequest("user") .id(user.getId()) .source(new ObjectMapper().convertValue(user, Map.class)); UpdateRequest updateRequest = new UpdateRequest("user", user.getId()) .doc(new ObjectMapper().convertValue(user, Map.class)) .upsert(indexRequest); elasticsearchRestTemplate.update(updateRequest); } public List<User> search(String keyword) { NativeSearchQuery searchQuery = new NativeSearchQueryBuilder() .withQuery(QueryBuilders.matchQuery("name", keyword)) .build(); return elasticsearchRestTemplate.queryForList(searchQuery, User.class); } } ``` 5. 最后,在 Controller 中使用 ElasticsearchOperations 进行增删改查操作: ```java @RestController @RequestMapping("/users") public class UserController { @Autowired private ElasticsearchOperations elasticsearchOperations; @PostMapping public void save(@RequestBody User user) { elasticsearchOperations.save(user); } @DeleteMapping("/{id}") public void delete(@PathVariable String id) { elasticsearchOperations.delete(id); } @PutMapping public void update(@RequestBody User user) { elasticsearchOperations.update(user); } @GetMapping public List<User> search(@RequestParam String keyword) { return elasticsearchOperations.search(keyword); } } ``` 以上就是一个简单的 Spring Boot 集成 Elasticsearch 的示例。
评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值