1,准备条件
es服务：127.0.0.1
2,pom.xml
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-high-level-client</artifactId>
<version>6.5.3</version>
</dependency>3,application.yml
spring:
data:
elasticsearch:
host: 127.0.0.1
port: 9200 # http请求使用9200，老版本的客户端transport使用的是93004，elasticsearchConfig.java
package com.equaker.es;
import org.apache.http.HttpHost;
import org.elasticsearch.client.*;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class ElasticsearchConfiguration {
// 读取自定义配置
@Value("${spring.data.elasticsearch.host}")
private String HOST;
@Value("${spring.data.elasticsearch.port}")
private String PORT;
注入RestHighLevelClient
@Bean
public RestHighLevelClient getClient(){
RestClientBuilder clientBuilder = RestClient.builder(new HttpHost(HOST,
Integer.valueOf(PORT), "http"));
RestHighLevelClient client = new RestHighLevelClient(clientBuilder);
return client;
}
}
5，测试使用（demoController.java）
package com.equaker.controller;
import com.alibaba.fastjson.JSON;
import com.equaker.mapper.cluster.UserMapper;
import com.equaker.mapper.master.EQMapper;
import com.equaker.model.EQ;
import com.equaker.model.ESUserInfo;
import com.equaker.model.User;
import org.elasticsearch.action.ActionListener;
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.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import java.math.BigDecimal;
import java.util.Date;
@Controller
@RequestMapping("demo")
public class DemoController {
private static Logger log = LoggerFactory.getLogger(DemoController.class);
@Autowired
private EQMapper eqMapper;
@Autowired
private UserMapper userMapper;
@Autowired
private RedisTemplate<String,String> redisTemplate;
@Autowired
private RestHighLevelClient client;
@RequestMapping("/esSave")
@ResponseBody
public ESUserInfo esSave(){
ESUserInfo esUserInfo = new ESUserInfo(1,"es-sdq",23,new Date(),new Date());
IndexRequest indexRequest = new IndexRequest();
indexRequest.index("people");
indexRequest.type("user");
indexRequest.id("5");
indexRequest.source(JSON.toJSONString(esUserInfo), XContentType.JSON);
client.indexAsync(indexRequest, RequestOptions.DEFAULT, new ActionListener<IndexResponse>() {
@Override
public void onResponse(IndexResponse indexResponse) {
log.info("total: "+indexResponse.getShardInfo().getTotal());
log.info("success: "+indexResponse.getShardInfo().getSuccessful());
log.info("failed: "+indexResponse.getShardInfo().getFailed());
}
@Override
public void onFailure(Exception e) {
e.printStackTrace();
}
});
return esUserInfo;
}
@RequestMapping("/esGet")
@ResponseBody
public ESUserInfo esGet(){
GetRequest getRequest = new GetRequest();
getRequest.index("people");
getRequest.type("user");
getRequest.id("5");
client.getAsync(getRequest, RequestOptions.DEFAULT, new ActionListener<GetResponse>() {
@Override
public void onResponse(GetResponse documentFields) {
System.out.println(documentFields.getSource());
}
@Override
public void onFailure(Exception e) {
e.printStackTrace();
}
});
return null;
}
}
6,其他简单 resthigh-level-elasticsearch-client api
public static void save(RestHighLevelClient client) {
IndexRequest indexRequest = new IndexRequest("people");
indexRequest.type("user");
ESUserInfo esUserInfo = new ESUserInfo(2,"es-sdq2",23,new Date(),new Date());
indexRequest.id(esUserInfo.getId()+"");
indexRequest.source(JSON.toJSONString(esUserInfo), XContentType.JSON);
client.indexAsync(indexRequest, RequestOptions.DEFAULT,new ActionListener<IndexResponse>() {
public void onResponse(IndexResponse response) {
System.out.println(response.getResult());
}
public void onFailure(Exception e) {
e.printStackTrace();
}
});
}
public static void delete(RestHighLevelClient client) {
DeleteRequest deleteRequest = new DeleteRequest("people", "user", "1");
client.deleteAsync(deleteRequest, RequestOptions.DEFAULT, new ActionListener<DeleteResponse>() {
public void onResponse(DeleteResponse response) {
System.out.println("请求http返回码: "+response.status().getStatus());
System.out.println("请求返回结果: "+response.getResult());
if(response.getResult().equals(DocWriteResponse.Result.NOT_FOUND)) {
// NOT FOUNT
}else if(response.getResult().equals(DocWriteResponse.Result.DELETED)){
//delete success
}
ReplicationResponse.ShardInfo shardInfo = response.getShardInfo();
//the total number of shards the write should go to (replicas and primaries).
//This includes relocating shards, so this
//number can be higher than the number of shards.
System.out.println(shardInfo.getTotal());
//the total number of shards the write succeeded on (replicas and primaries).
//This includes relocating shards, so this
//number can be higher than the number of shards.
System.out.println(shardInfo.getSuccessful());
//The total number of replication failures
System.out.println(shardInfo.getFailed());
for(Failure failure : shardInfo.getFailures()) {
System.out.println("失败原因: "+failure.getCause());
}
}
public void onFailure(Exception e) {
e.printStackTrace();
}
});
}
public static void update(RestHighLevelClient client) {
Map<String, Object> paras = new HashMap<String, Object>();
paras.put("grade", 23);
IndexRequest indexRequest = new IndexRequest("people", "user", "4");
indexRequest.source(paras);
UpdateRequest updateRequest = new UpdateRequest("people", "user", "4").upsert(indexRequest);
updateRequest.upsert(indexRequest); //update or insert
updateRequest.doc(indexRequest); //only update
try {
UpdateResponse updateResponse = client.update(updateRequest, RequestOptions.DEFAULT);
System.out.println(updateResponse.getResult());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void get(RestHighLevelClient client) {
GetRequest getRequest = new GetRequest("people", "user", "1");
String[] includes = new String[]{"name", "age","id"};//返回包含字段
String[] excludes = Strings.EMPTY_ARRAY;
//表示不返回 _source 即查询到的数据,使用exist查询时强烈开启此字段
//FetchSourceContext fetchSourceContext = new FetchSourceContext(false);
FetchSourceContext fetchSourceContext = new FetchSourceContext(true,includes,excludes);
getRequest.fetchSourceContext(fetchSourceContext);
getRequest.storedFields("_source");
try {
GetResponse getResponse = client.get(getRequest, RequestOptions.DEFAULT);
System.out.println(getResponse.getField("_source").getValue());
ESUserInfo userInfo = JSON.parseObject(getResponse.getSourceAsString(), ESUserInfo.class);
System.out.println("user: "+userInfo);
Map<String, DocumentField> map = getResponse.getFields();
System.err.println("fields: "+map);
System.out.println("version: "+getResponse.getVersion());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}7,官方api文档