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這篇文章主要講解了“springboot2.1.6集成elasticsearch6.4.3如何實(shí)現(xiàn)全文搜索”,文中的講解內(nèi)容簡(jiǎn)單清晰,易于學(xué)習(xí)與理解,下面請(qǐng)大家跟著小編的思路慢慢深入,一起來研究和學(xué)習(xí)“springboot2.1.6集成elasticsearch6.4.3如何實(shí)現(xiàn)全文搜索”吧!
由于項(xiàng)目需要elasticsearch做全文搜索,其基本介紹如下:
簡(jiǎn)介:ElasticSearch是一個(gè)基于Lucene的搜索服務(wù)器。它提供了一個(gè)分布式多用戶能力的全文搜索引擎,基于RESTful web接口。Elasticsearch是用Java開發(fā)的,并作為Apache許可條款下的開放源碼發(fā)布,是當(dāng)前流行的企業(yè)級(jí)搜索引擎。設(shè)計(jì)用于云計(jì)算中,能夠達(dá)到實(shí)時(shí)搜索,穩(wěn)定,可靠,快速,安裝使用方便。官方客戶端在Java、.NET(C#)、PHP、Python、Apache Groovy、Ruby和許多其他語(yǔ)言中都是可用的。根據(jù)DB-Engines的排名顯示,Elasticsearch是最受歡迎的企業(yè)搜索引擎,其次是Apache Solr,也是基于Lucene。
springboot整合elasticsearch常有方式主要有三種:
1.Java API 基于TCP和ES通信,官方已經(jīng)明確表示在ES 7.0版本中將棄用TransportClient客戶端,且在8.0版本中完全移除它,所以不提倡。 2.REST Client 上面的方式1是基于TCP和ES通信的(而且TransPort將來會(huì)被拋棄……),官方也給出了基于HTTP的客戶端REST Client(推薦使用),官方給出來的REST Client有Java Low Level REST Client和Java Hight Level REST Client兩個(gè),前者兼容所有版本的ES,后者是基于前者開發(fā)出來的,只暴露了部分API. 3.spring-data-elasticsearch 除了上述方式,Spring也提供了本身基于SpringData實(shí)現(xiàn)的一套方案spring-data-elasticsearch
spring-data-elasticsearch集成Es這種方式,封裝了比較常見的es操作,和JPA操作數(shù)據(jù)庫(kù)一樣便捷,只需要繼承 ElasticsearchRepository就可以實(shí)現(xiàn)常見的es操作了。
public interface UserESRepository extends ElasticsearchRepository<UserBean, Long> {}
在測(cè)試的過程中,鼓搗了兩天多都好無進(jìn)展,始終報(bào)如下錯(cuò)誤:
Caused by: org.elasticsearch.client.transport.NoNodeAvailableException: None of the configured nodes are available: [{#transport#-1}{kgdgqCDKRlm9rjdj2B_s8A}{47.89.250.94}{47.89.250.94:9300}]
看了很多博客,基本上說是端口和cluster-name 不對(duì)應(yīng)的造成的,可是改了之后還是報(bào)錯(cuò),后來才知道版本不對(duì)應(yīng)造成的。
依賴文件build.gradle:
plugins { id 'org.springframework.boot' version '2.1.6.RELEASE' id 'java' } apply plugin: 'io.spring.dependency-management' group = 'com.example' version = '0.0.1-SNAPSHOT' sourceCompatibility = '1.8' repositories { mavenCentral() } dependencies { implementation 'org.springframework.boot:spring-boot-starter-data-elasticsearch' implementation 'org.springframework.boot:spring-boot-starter-web' testImplementation 'org.springframework.boot:spring-boot-starter-test' }
配置文件application.yml:
spring: data: elasticsearch: cluster-name: EStest cluster-nodes: 127.0.0.1:9300 server: port: 8080
到官網(wǎng):https://www.elastic.co/cn/downloads/past-releases/官網(wǎng)
可以下載歷史版本,最新版本為(7.2.0),不建議使用最新的
我使用的版本:
springboot版本 | Elasticsearch版本 |
---|---|
2.1.6 | 6.4.3 |
下載后文件目錄:
進(jìn)入config文件夾后,修改 elasticsearch.yml :
# ======================== Elasticsearch Configuration ========================= # # NOTE: Elasticsearch comes with reasonable defaults for most settings. # Before you set out to tweak and tune the configuration, make sure you # understand what are you trying to accomplish and the consequences. # # The primary way of configuring a node is via this file. This template lists # the most important settings you may want to configure for a production cluster. # # Please consult the documentation for further information on configuration options: # https://www.elastic.co/guide/en/elasticsearch/reference/index.html # # ---------------------------------- Cluster ----------------------------------- # # Use a descriptive name for your cluster: # cluster.name: EStest # # ------------------------------------ Node ------------------------------------ # # Use a descriptive name for the node: # node.name: node-1 # # Add custom attributes to the node: # #node.attr.rack: r1 # # ----------------------------------- Paths ------------------------------------ # # Path to directory where to store the data (separate multiple locations by comma): # #path.data: /path/to/data # # Path to log files: # #path.logs: /path/to/logs # # ----------------------------------- Memory ----------------------------------- # # Lock the memory on startup: # #bootstrap.memory_lock: true # # Make sure that the heap size is set to about half the memory available # on the system and that the owner of the process is allowed to use this # limit. # # Elasticsearch performs poorly when the system is swapping the memory. # # ---------------------------------- Network ----------------------------------- # # Set the bind address to a specific IP (IPv4 or IPv6): # network.host: 0.0.0.0 # # Set a custom port for HTTP: # http.port: 9200 # # For more information, consult the network module documentation. # # --------------------------------- Discovery ---------------------------------- # # Pass an initial list of hosts to perform discovery when new node is started: # The default list of hosts is ["127.0.0.1", "[::1]"] # #discovery.zen.ping.unicast.hosts: ["host1", "host2"] # # Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1): # #discovery.zen.minimum_master_nodes: # # For more information, consult the zen discovery module documentation. # # ---------------------------------- Gateway ----------------------------------- # # Block initial recovery after a full cluster restart until N nodes are started: # #gateway.recover_after_nodes: 3 # # For more information, consult the gateway module documentation. # # ---------------------------------- Various ----------------------------------- # # Require explicit names when deleting indices: # #action.destructive_requires_name: true http.cors.enabled: true http.cors.allow-origin: "*" node.master: true node.data: true
提示: 這里的cluster.name: EStest 要與application.yml中的cluster-name: EStest保持一致
啟動(dòng) elasticsearch 腳本,雙擊即可啟動(dòng)
在瀏覽器中輸入http://localhost:9200/ ,出現(xiàn)如下就說明啟動(dòng)成功:
<1>創(chuàng)建實(shí)體:
package com.example.demo; import com.fasterxml.jackson.annotation.JsonFormat; import lombok.Data; import lombok.experimental.Accessors; 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; import java.io.Serializable; /* *@Description: Blog實(shí)體 *@ClassName: BlogModel *@Author: zzq *@Date: 2019/7/19 17:47 *@Version: 1.0 */ @Data @Accessors(chain = true) @Document(indexName = "blog", type = "user") public class BlogModel implements Serializable { private static final long serialVersionUID = 1L; @Id private Long id; @Field(type = FieldType.Text, analyzer = "ik_max_word") private String title; //@Field(type = FieldType.Date, format = DateFormat.basic_date) public BlogModel(){ } public BlogModel(Long id, String title) { this.id = id; this.title = title; } public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } @Override public String toString() { return "BlogModel{" + "id='" + id + '\'' + ", title='" + title + '\'' + '}'; } }
<2> 創(chuàng)建操作數(shù)據(jù)的Repository
package com.example.demo; import org.springframework.data.elasticsearch.repository.ElasticsearchRepository; /* *@Description: 數(shù)據(jù)倉(cāng)庫(kù) *@ClassName: BlogRepository *@Author: zzq *@Date: 2019/7/19 17:48 *@Version: 1.0 */ public interface BlogRepository extends ElasticsearchRepository<BlogModel, String> { }
<3>創(chuàng)建controller
package com.example.demo; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Repository; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import java.util.List; /* *@Description: controller *@ClassName: BlogController *@Author: zzq *@Date: 2019/7/19 17:49 *@Version: 1.0 */ @RestController @RequestMapping("/blog") @Repository public class BlogController { @Autowired private BlogRepository blogRepository; @GetMapping("/save") public String add() { BlogModel blogModel = new BlogModel(); blogModel.setTitle("superheros"); blogRepository.save(blogModel); return "ok"; } private String title = ""; @GetMapping("/get") public String get(){ Iterable<BlogModel> list = (List<BlogModel>) blogRepository.findAll(); list.forEach(blogModel -> { title += blogModel.toString() + "\n"; }); return title; } }
<4>啟動(dòng)入口
package com.example.demo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class ElasticsearchApplication { public static void main(String[] args) { SpringApplication.run(ElasticsearchApplication.class, args); } }
查詢:
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感謝各位的閱讀,以上就是“springboot2.1.6集成elasticsearch6.4.3如何實(shí)現(xiàn)全文搜索”的內(nèi)容了,經(jīng)過本文的學(xué)習(xí)后,相信大家對(duì)springboot2.1.6集成elasticsearch6.4.3如何實(shí)現(xiàn)全文搜索這一問題有了更深刻的體會(huì),具體使用情況還需要大家實(shí)踐驗(yàn)證。這里是億速云,小編將為大家推送更多相關(guān)知識(shí)點(diǎn)的文章,歡迎關(guān)注!
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