这篇文章主要为大家展示了“SpringBoot框架如何集成ElasticSearch”，内容简而易懂，条理清晰，希望能够帮助大家解决疑惑，下面让小编带领大家一起研究并学习一下“SpringBoot框架如何集成ElasticSearch”这篇文章吧。
依赖
SpringBoot版本：2.4.2
<dependencies> <!--lombok--> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-elasticsearch</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> <scope>true</scope> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.47</version> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>2020.0.1</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-alibaba-dependencies</artifactId> <version>2021.1</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement>先了解一下curl方式操作es
与SpringBoot集成
配置类
import org.elasticsearch.client.RestHighLevelClient;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.data.elasticsearch.client.ClientConfiguration;import org.springframework.data.elasticsearch.client.RestClients;import org.springframework.data.elasticsearch.config.AbstractElasticsearchConfiguration;@Configurationpublic class ElasticsearchConfig extends AbstractElasticsearchConfiguration { @Override @Bean public RestHighLevelClient elasticsearchClient() { final ClientConfiguration clientConfiguration = ClientConfiguration.builder() .connectedTo("localhost:9200") .build(); return RestClients.create(clientConfiguration).rest(); }}实体类
import lombok.Data;import org.springframework.data.annotation.Id;import org.springframework.data.elasticsearch.annotations.Document;import org.springframework.data.elasticsearch.annotations.Field;import org.springframework.data.elasticsearch.annotations.FieldType;@Data@Document(indexName = "product", shards = 3, replicas = 1)public class Product { //必须有 id,这里的 id 是全局唯一的标识，等同于 es 中的"_id" @Id private Long id;//商品唯一标识 @Field(type = FieldType.Text, analyzer = "ik_max_word") private String title;//商品名称 @Field(type = FieldType.Keyword) private String category;//分类名称 @Field(type = FieldType.Double) private Double price;//商品价格 @Field(type = FieldType.Keyword, index = false) private String images;//图片地址}测试例子
@RestController@RequestMappingpublic class TestESController { @Autowired private ElasticsearchRestTemplate elasticsearchRestTemplate; @Resource ProductMapper productMapper; @GetMapping public void createIndex() { //创建索引，系统初始化会自动创建索引 System.out.println("创建索引"); } @DeleteMapping public void deleteIndex() { //创建索引，系统初始化会自动创建索引 boolean flg = elasticsearchRestTemplate.deleteIndex(Product.class); System.out.println("删除索引 = " + flg); } @PostMapping public void save(){ Product product = new Product(); product.setId(1L); product.setTitle("华为手机"); product.setCategory("手机"); product.setPrice(2999.0); product.setImages("http://www.atguigu/hw.jpg"); productMapper.save(product); } @PutMapping public void update(){ Product product = new Product(); product.setId(1L); product.setTitle("小米 2 手机"); product.setCategory("手机"); product.setPrice(9999.0); product.setImages("http://www.atguigu/xm.jpg"); productMapper.save(product); } @GetMapping("/findById") public void findById(){ Product product = productMapper.findById(1L).get(); System.out.println(product); } @GetMapping("/findAll") public void findAll(){ Iterable<Product> products = productMapper.findAll(); for (Product product : products) { System.out.println(product); } } //删除 @DeleteMapping("/delDocument") public void delete(){ Product product = new Product(); product.setId(1L); productMapper.delete(product); } //批量新增 @PostMapping("/addBatch") public void saveAll(){ List<Product> productList = new ArrayList<>(); for (int i = 0; i < 10; i++) { Product product = new Product(); product.setId(Long.valueOf(i)); product.setTitle("["+i+"]小米手机"); product.setCategory("手机"); product.setPrice(1999.0+i); product.setImages("http://www.atguigu/xm.jpg"); productList.add(product); } productMapper.saveAll(productList); } //分页查询 @GetMapping("/findByPageable") public void findByPageable(){ //设置排序(排序方式，正序还是倒序，排序的 id) Sort sort = Sort.by(Sort.Direction.DESC,"id"); int currentPage=0;//当前页，第一页从 0 开始， 1 表示第二页 int pageSize = 5;//每页显示多少条 //设置查询分页 PageRequest pageRequest = PageRequest.of(currentPage, pageSize,sort); //分页查询 Page<Product> productPage = productMapper.findAll(pageRequest); for (Product Product : productPage.getContent()) { System.out.println(Product); } }}RestHighLevelClient直接操作
这些操作，就是javaApi，和上图中，通过http方式和es交互式类似的
索引操作
@Slf4jpublic class ESIndexTestCase { public static void main(String[] args) throws IOException { // 创建客户端 RestHighLevelClient esClient = new RestHighLevelClient(RestClient.builder(new HttpHost("localhost", 9200))); // 创建索引 // CreateIndexRequest indexRequest = new CreateIndexRequest("book"); // CreateIndexResponse indexResponse = esClient.indices().create(indexRequest, RequestOptions.DEFAULT); // boolean acknowledged = indexResponse.isAcknowledged(); // log.error("响应{}",acknowledged); // 查询索引 // GetIndexRequest getIndexRequest = new GetIndexRequest("book"); // GetIndexResponse getIndexResponse = esClient.indices().get(getIndexRequest, RequestOptions.DEFAULT); // log.info("getAliases:{}",getIndexResponse.getAliases()); // log.info("getMappings:{}",getIndexResponse.getMappings()); // log.info("getSettings:{}",getIndexResponse.getSettings()); // 删除索引 AcknowledgedResponse deleteRes = esClient.indices().delete(new DeleteIndexRequest("book"), RequestOptions.DEFAULT); boolean delAck = deleteRes.isAcknowledged(); log.error("delAck:{}",delAck); esClient.close(); }}文档操作
@Slf4jpublic class ESDocmentTestCase { public static void main(String[] args) throws IOException { // 创建客户端 RestHighLevelClient esClient = new RestHighLevelClient(RestClient.builder(new HttpHost("localhost", 9200))); // 新增文档 // IndexRequest indexRequest = new IndexRequest("user"); // indexRequest.id("1001"); // // 准备文档 // User user = new User(); // user.setName("张三"); // user.setAge(22); // user.setSex("男"); // String userJson = JSONObject.toJSONString(user); // indexRequest.source(userJson, XContentType.JSON); // IndexResponse indexResponse = esClient.index(indexRequest, RequestOptions.DEFAULT); // log.error("getResult:==========>:{}",indexResponse.getResult()); // 批量新增文档 BulkRequest bulkRequest = new BulkRequest(); bulkRequest.add(new IndexRequest("user").id("2001").source(XContentType.JSON,"name","张三","age","40","sex","男")); bulkRequest.add(new IndexRequest("user").id("2002").source(XContentType.JSON,"name","222","age","10","sex","女")); bulkRequest.add(new IndexRequest("user").id("2003").source(XContentType.JSON,"name","33333","age","20","sex","男")); bulkRequest.add(new IndexRequest("user").id("2004").source(XContentType.JSON,"name","111","age","30","sex","男")); bulkRequest.add(new IndexRequest("user").id("2005").source(XContentType.JSON,"name","2222","age","31","sex","女")); BulkResponse bulkResponse = esClient.bulk(bulkRequest, RequestOptions.DEFAULT); log.error("getResult:==========>:{}",bulkResponse.getTook()); // 更新文档（全量更新，局部更新） // UpdateRequest updateRequest = new UpdateRequest("user", "1001"); // updateRequest.doc("sex","dddddd"); // UpdateResponse updateResponse = esClient.update(updateRequest, RequestOptions.DEFAULT); // log.error("getResult:==========>:{}",updateResponse.getResult()); // 根据_id查询文档 // GetRequest getRequest = new GetRequest("user", "1001"); // GetResponse getResponse = esClient.get(getRequest, RequestOptions.DEFAULT); // log.error("getResult:==========>:{}",getResponse.getSource()); // 根据_id 删除数据 // DeleteRequest deleteRequest = new DeleteRequest("user", "1001"); // DeleteResponse deleteResponse = esClient.delete(deleteRequest, RequestOptions.DEFAULT); // log.error("getResult:==========>:{}",deleteResponse.getResult()); // 批量删除（和批量新增类似） esClient.close(); }}检索操作
@Slf4jpublic class EsSearchTest { public static void main(String[] args) throws IOException { // 创建客户端 RestHighLevelClient esClient = new RestHighLevelClient(RestClient.builder(new HttpHost("localhost", 9200))); // 查询所有 // SearchRequest searchRequest = new SearchRequest("user"); // SearchSourceBuilder queryBuilder = new SearchSourceBuilder().query(QueryBuilders.matchAllQuery()); // queryBuilder.from(0); // queryBuilder.size(4); // queryaBuilder.sort("age", SortOrder.DESC); // SearchRequest sourceRequest = searchRequest.source(queryBuilder); // SearchResponse searchResponse = esClient.search(sourceRequest, RequestOptions.DEFAULT); // log.error("getHits:======>{}", searchResponse.getHits().getTotalHits()); // searchResponse.getHits().forEach(hit -> System.out.println(hit.getSourceAsString())); // 2-组合查询 // SearchRequest searchRequest = new SearchRequest("user"); // BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery(); // // 这里就是组合条件。和mysql where 组合类似 // boolQueryBuilder.should(QueryBuilders.matchQuery("age","30")); // boolQueryBuilder.should(QueryBuilders.matchQuery("age","40")); // SearchSourceBuilder sourceBuilder = new SearchSourceBuilder().query(boolQueryBuilder); // searchRequest.source(sourceBuilder); // SearchResponse searchResponse = esClient.search(searchRequest, RequestOptions.DEFAULT); // searchResponse.getHits().forEach(hit -> System.err.println(hit.getSourceAsString())); // 3-范围查询 // SearchRequest searchRequest = new SearchRequest("user"); // SearchSourceBuilder sourceBuilder = new SearchSourceBuilder(); // RangeQueryBuilder rangeQuery = QueryBuilders.rangeQuery("age"); // rangeQuery.gte("30"); // sourceBuilder.query(rangeQuery); // searchRequest.source(sourceBuilder); // SearchResponse searchResponse = esClient.search(searchRequest, RequestOptions.DEFAULT); // searchResponse.getHits().forEach(hit -> System.out.println(hit.getSourceAsString())); //4-模糊查询+高亮 SearchRequest searchRequest = new SearchRequest("user"); SearchSourceBuilder sourceBuilder = new SearchSourceBuilder(); FuzzyQueryBuilder fuzzyQuery = QueryBuilders.fuzzyQuery("name", "张三"); sourceBuilder.query(fuzzyQuery); HighlightBuilder highlightBuilder = new HighlightBuilder(); highlightBuilder.preTags("<font color='red'>"); highlightBuilder.postTags("</font>"); highlightBuilder.field("name"); sourceBuilder.highlighter(highlightBuilder); searchRequest.source(sourceBuilder); SearchResponse searchResponse = esClient.search(searchRequest, RequestOptions.DEFAULT); searchResponse.getHits().forEach(System.out::println); // 5-聚合查询 esClient.close(); }}以上是“SpringBoot框架如何集成ElasticSearch”这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注编程网行业资讯频道！
