SpringBoot集成ElasticSearch的几种方式
到目前为止，ES有4种客户端，分别是：Jest client、Rest client、Transport client、Node client，相信大家在项目集成中选择客户端比较纠结，搜索案例的时候一会是这个客户端实现的，一会儿又是别的客户端实现的，自己又不了解每个客户端的优劣势，但又想集成最好的，下面就来说说各个客户端的区别，以及优劣势
ES支持两种协议
HTTP协议，支持的客户端有Jest client和Rest client
Native Elasticsearch binary协议，也就是Transport client和Node client
Jest client和Rest client区别
Jest client非官方支持，在ES5.0之前官方提供的客户端只有Transport client、Node client。在5.0之后官方发布Rest client，并大力推荐
Transport client和Node client区别
Transport client（7.0弃用）和Node client（2.3弃用）区别：最早的两个客户端，Transport client是不需要单独一个节点。Node client需要单独建立一个节点，连接该节点进行操作，ES2.3之前有独立的API，ES2.3之后弃用该API，推荐用户创建一个节点，并用Transport client连接进行操作
综合：以上就是各个客户端现在的基本情况，可以看出Rest client目前是官方推荐的，但是springBoot默认支持的依然Transport client，这可能和ES更新速度有关，下面集成中会列出所有客户端的集成方式
源码托管地址：
https://github.com/rancho00/ElasticSearch/tree/master/source/spring-boot-demo-elasticsearch
SpringBoot整合ES
1、Rest client
2、Jest client
3、Spring Data
4、Spring Data Repository
1、Rest client
Rest client分为：Java Low Level Rest Client和Java High Level Rest Client
Java Low Level Rest Client
pom.xml
org.springframework.boot
spring-boot-starter
org.springframework.boot
spring-boot-starter-test
test
org.elasticsearch.client
elasticsearch-rest-client
6.4.0
application.properties
spring.elasticsearch.rest.uris=http://127.0.0.1:9200RestLowTest.java
package com.rancho.demo.elasticsearch;
import org.apache.http.HttpEntity;
import org.apache.http.entity.ContentType;
import org.apache.http.nio.entity.NStringEntity;
import org.apache.http.util.EntityUtils;
import org.elasticsearch.client.Request;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.Response;
import org.elasticsearch.client.RestClient;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import javax.annotation.Resource;
@RunWith(SpringRunner.class)
@SpringBootTest
public class RestLowTest {
@Resource
private RestClient client;
@Test
public void add() {
try {
Request request = new Request("PUT", "/content/doc/20190909");
String jsonString = "{\"id\":\"20190909\",\"name\":\"测试\",\"age\":22}";
HttpEntity entity = new NStringEntity(jsonString, ContentType.APPLICATION_JSON);
request.setEntity(entity);
Response response = client.performRequest(request);
String result = EntityUtils.toString(response.getEntity());
System.out.println(result);
} catch (Exception e) {
}
}
@Test
public void search() {
try {
Request request = new Request("GET", "/content/_search");
String jsonString = "{\"query\":{\"match\":{\"name\":\"测试\"}}}";
HttpEntity entity = new NStringEntity(jsonString, ContentType.APPLICATION_JSON);
request.setEntity(entity);
Response response = client.performRequest(request);
String result = EntityUtils.toString(response.getEntity());
System.out.println(result);
} catch (Exception e) {
e.printStackTrace();
}
}
@Test
public void update() {
try {
Request request = new Request("PUT", "/content/doc/20190909");
String jsonString = "{\"id\":\"20190909\",\"name\":\"测试-update\",\"age\":22}";
HttpEntity entity = new NStringEntity(jsonString, ContentType.APPLICATION_JSON);
request.setEntity(entity);
Response response = client.performRequest(request);
String result = EntityUtils.toString(response.getEntity());
System.out.println(result);
} catch (Exception e) {
}
}
@Test
public void get() {
try {
Request request = new Request("GET", "/content/doc/20190909");
Response response = client.performRequest(request);
String result = EntityUtils.toString(response.getEntity());
System.out.println(result);
} catch (Exception e) {
}
}
@Test
public void delete() {
try {
Request request = new Request("DELETE", "/content/doc/20190909");
Response response = client.performRequest(request);
String result = EntityUtils.toString(response.getEntity());
System.out.println(result);
} catch (Exception e) {
}
}
}
Java High Level Rest Client
pom.xml
org.springframework.boot
spring-boot-starter
org.springframework.boot
spring-boot-starter-test
test
org.elasticsearch.client
elasticsearch-rest-client
6.4.0
org.elasticsearch.client
elasticsearch-rest-high-level-client
6.4.0
application.properties
spring.elasticsearch.rest.uris=http://127.0.0.1:9200RestHighTest.java
package com.rancho.demo.elasticsearch;
import org.apache.http.HttpHost;
import org.elasticsearch.action.delete.DeleteRequest;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.get.GetRequest;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.action.update.UpdateResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.index.query.MatchPhrasePrefixQueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import javax.annotation.Resource;
import java.util.HashMap;
import java.util.Map;
@RunWith(SpringRunner.class)
@SpringBootTest
public class RestHighTest {
@Resource
private RestHighLevelClient restHighLevelClient;
@Test
public void add() {
Map map = new HashMap();
map.put("id", "20190909");
map.put("name", "测试");
map.put("age", 22);
try {
IndexRequest indexRequest = new IndexRequest("content", "doc", map.get("id").toString()).source(map);
IndexResponse indexResponse = restHighLevelClient.index(indexRequest, RequestOptions.DEFAULT);
System.out.println(indexResponse.toString());
} catch (Exception e) {
e.printStackTrace();
}
}
@Test
public void search() {
SearchRequest searchRequest = new SearchRequest().indices("content").types("doc");
SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
MatchPhrasePrefixQueryBuilder mppqb = QueryBuilders.matchPhrasePrefixQuery("name", "测试");
sourceBuilder.query(mppqb);
try {
SearchResponse sr = this.restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
String result = sr.toString();
System.out.println(result);
} catch (Exception e) {
e.printStackTrace();
}
}
@Test
public void update() {
Map map = new HashMap();
map.put("id", "20190909");
map.put("name", "测试-update");
map.put("age", 22);
try {
UpdateRequest request = new UpdateRequest("content", "doc", map.get("id").toString()).doc(map);
UpdateResponse updateResponse = restHighLevelClient.update(request, RequestOptions.DEFAULT);
System.out.println(updateResponse.toString());
} catch (Exception e) {
}
}
@Test
public void get() {
try {
GetRequest request = new GetRequest("content", "doc", "20190909");
GetResponse getResponse = this.restHighLevelClient.get(request, RequestOptions.DEFAULT);
System.out.println(getResponse.toString());
} catch (Exception e) {
}
}
@Test
public void delete() {
try {
DeleteRequest request = new DeleteRequest("content", "doc", "20190909");
DeleteResponse deleteResponse = this.restHighLevelClient.delete(request, RequestOptions.DEFAULT);
System.out.println(deleteResponse.toString());
} catch (Exception e) {
}
}
} 2、Jest client
pom.xml
org.springframework.boot
spring-boot-starter
org.springframework.boot
spring-boot-starter-test
test
org.elasticsearch
elasticsearch
6.5.4
io.searchbox
jest
5.3.3
application.properties
spring.elasticsearch.jest.uris=http://127.0.0.1:9200JestTest.java
package com.rancho.demo.elasticsearch;
import io.searchbox.client.JestClient;
import io.searchbox.client.JestResult;
import io.searchbox.core.*;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import javax.annotation.Resource;
import java.util.HashMap;
import java.util.Map;
@RunWith(SpringRunner.class)
@SpringBootTest
public class JestTest {
@Resource
private JestClient jestClient;
@Test
public void add() {
Map map = new HashMap();
map.put("id", "20190909");
map.put("name", "测试");
map.put("age", 22);
Index index = new Index.Builder(map).id("20190909").index("content").type("doc").build();
try {
JestResult jestResult = jestClient.execute(index);
System.out.println(jestResult.getJsonString());
} catch (Exception e) {
}
}
@Test
public void search() {
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query(QueryBuilders.matchPhrasePrefixQuery("name", "测试"));
Search search = new Search.Builder(searchSourceBuilder.toString()).addIndex("content").addType("doc").build();
try {
JestResult jestResult = jestClient.execute(search);
System.out.println(jestResult.getJsonString());
} catch (Exception e) {
}
}
/**
* Index也可以修改
*/
@Test
public void update() {
String script = "{" +
" \"doc\" : {" +
" \"id\" : \"20190909\"," +
" \"name\" : \"测试-update\"," +
" \"age\" : \"22\"" +
" }" +
"}";
Update update = new Update.Builder(script).index("content").type("doc").id("20190909").build();
try {
JestResult jestResult = jestClient.execute(update);
System.out.println(jestResult.getJsonString());
} catch (Exception e) {
}
}
@Test
public void get() {
Get build = new Get.Builder("content", "20190909")
.type("doc")
.build();
try {
JestResult jestResult = jestClient.execute(build);
System.out.println(jestResult.getJsonString());
} catch (Exception e) {
}
}
@Test
public void delete() {
Delete delete = new Delete.Builder("20190909").index("content").type("doc").build();
try {
JestResult jestResult = jestClient.execute(delete);
System.out.println(jestResult.getJsonString());
} catch (Exception e) {
}
}
}
3、Spring Data
pom.xml
org.springframework.boot
spring-boot-starter
org.springframework.boot
spring-boot-starter-test
test
org.springframework.boot
spring-boot-starter-data-elasticsearch
application.properties
spring.data.elasticsearch.cluster-nodes=127.0.0.1:9300
spring.data.elasticsearch.cluster-name=elasticsearchElasticsearchTemplateTest.java
package com.rancho.demo.elasticsearch;
import org.elasticsearch.action.delete.DeleteRequest;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.update.UpdateResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.index.query.*;
import org.elasticsearch.search.SearchHit;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.elasticsearch.core.ElasticsearchTemplate;
import org.springframework.data.elasticsearch.core.query.*;
import org.springframework.test.context.junit4.SpringRunner;
import javax.annotation.Resource;
import java.util.HashMap;
import java.util.Map;
@RunWith(SpringRunner.class)
@SpringBootTest
public class ElasticsearchTemplateTest {
@Resource
private ElasticsearchTemplate elasticsearchTemplate;
@Test
public void add(){
try{
Map map=new HashMap();
map.put("id","20190909");
map.put("name","测试");
map.put("age",22);
IndexQuery indexQuery=new IndexQueryBuilder().withIndexName("content").withType("doc").withId(map.get("id").toString()).withObject(map).build();
String result=elasticsearchTemplate.index(indexQuery);
System.out.println(result);
}catch (Exception e){
}
}
@Test
public void search(){
MatchPhraseQueryBuilder mpqb= QueryBuilders.matchPhraseQuery("name","测试");
try{
SearchQuery searchQuery = new NativeSearchQueryBuilder() .withQuery(mpqb).build();
elasticsearchTemplate.query(searchQuery,searchResponse ->{
if (searchResponse.getHits().getTotalHits() > 0) {
SearchHit[] searchHits = searchResponse.getHits().getHits();
for(SearchHit searchHit:searchHits){
System.out.println(searchHit.getSourceAsString());
}
}
return null;
});
}catch (Exception e){
e.printStackTrace();
}
}
@Test
public void update(){
try{
Map map=new HashMap();
map.put("id","20190909");
map.put("name","测试-update");
map.put("age",22);
IndexQuery indexQuery=new IndexQueryBuilder().withIndexName("content").withType("doc").withId(map.get("id").toString()).withObject(map).build();
String result=elasticsearchTemplate.index(indexQuery);
System.out.println(result);
}catch (Exception e){
}
}
@Test
public void delete(){
try{
elasticsearchTemplate.delete("content","doc","20190909");
}catch (Exception e){
}
}
}
4、Spring Data Repository
pom.xml
org.springframework.boot
spring-boot-starter
org.springframework.boot
spring-boot-starter-test
test
org.springframework.boot
spring-boot-starter-data-elasticsearch
application.properties
spring.data.elasticsearch.cluster-nodes=127.0.0.1:9300
spring.data.elasticsearch.cluster-name=elasticsearch定义一个User实体
package com.rancho.demo.elasticsearch.repository.entity;
import org.springframework.data.elasticsearch.annotations.Document;
@Document(indexName = "content", type = "doc")public class User {
private String id;
private String name;
private Integer age;
public String getId() { return id; }
public void setId(String id) { this.id = id; }
public String getName() { return name; }
public void setName(String name) { this.name = name; }
public Integer getAge() { return age; }
public void setAge(Integer age) { this.age = age; }
@Override public String toString() { return "User{" + "id='" + id + '\'' + ", name='" + name + '\'' + ", age=" + age + '}'; }}
自定义UserRepository并集成ElasticsearchRepository
package com.rancho.demo.elasticsearch.repository.repository;
import com.rancho.demo.elasticsearch.repository.entity.User;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
public interface UserRepository extends ElasticsearchRepository {
User findByName(String name);
}
定义UserService.java
package com.rancho.demo.elasticsearch.repository.service;
import com.rancho.demo.elasticsearch.repository.entity.User;
public interface UserService {
void save(User user);
void update(User user);
User getById(String id);
User getByName(String name);
void delete(String id);
}定义UserService实现类UserServiceImp.java
package com.rancho.demo.elasticsearch.repository.service.impl;
import com.rancho.demo.elasticsearch.repository.entity.User;
import com.rancho.demo.elasticsearch.repository.repository.UserRepository;
import com.rancho.demo.elasticsearch.repository.service.UserService;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
@Service
public class UserServiceImpl implements UserService {
@Resource
private UserRepository userRepository;
@Override
public User getById(String id) {
return userRepository.findById(id).get();
}
@Override
public void save(User user) {
userRepository.save(user);
}
@Override
public User getByName(String name) {
return userRepository.findByName(name);
}
@Override
public void delete(String id) {
userRepository.deleteById(id);
}
@Override
public void update(User user) {
userRepository.delete(user);
userRepository.save(user);
}
}测试RepositoryTest.java
package com.rancho.demo.elasticsearch;
import com.rancho.demo.elasticsearch.repository.entity.User;
import com.rancho.demo.elasticsearch.repository.service.UserService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.elasticsearch.core.query.IndexQuery;
import org.springframework.data.elasticsearch.core.query.IndexQueryBuilder;
import org.springframework.test.context.junit4.SpringRunner;
import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import java.util.HashMap;
import java.util.Map;
@RunWith(SpringRunner.class)
@SpringBootTest
public class RepositoryTest {
@Resource
private UserService userService;
@Test
public void add(){
try{
User user=new User();
user.setId("20190909");
user.setName("测试");
user.setAge(22);
userService.save(user);
System.out.println("添加成功");
}catch (Exception e){
e.printStackTrace();
}
}
@Test
public void get(){
try{
User user=userService.getById("20190909");
System.out.println(user.toString());
}catch (Exception e){
e.printStackTrace();
}
}
@Test
public void update(){
try{
User user=new User();
user.setId("20190909");
user.setName("测试-update");
user.setAge(22);
userService.update(user);
System.out.println("修改成功");
}catch (Exception e){
e.printStackTrace();
}
}
@Test
public void getByName(){
try{
User user=userService.getByName("测试-update");
System.out.println(user.toString());
}catch (Exception e){
e.printStackTrace();
}
}
@Test
public void delete(){
try{
userService.delete("20190909");
System.out.println("删除成功");
}catch (Exception e){
e.printStackTrace();
}
}
}
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