基于elasticSearch的基本java api
文章目录
- 依赖
- 获取客户端
- 模糊匹配查询(bug未解决: 无法匹配数字)
- 精确匹配 termQuery
- 执行全文检索 Multi Match Query 搜索所有的value值
- 根据id查询数据
依赖
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>transport</artifactId>
<version>6.3.1</version>
</dependency>
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>6.3.1</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.plugin</groupId>
<artifactId>transport-netty4-client</artifactId>
<version>6.3.1</version>
</dependency>
测试数据
{
"took": 31,
"timed_out": false,
"_shards": {
"total": 6,
"successful": 6,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 7,
"max_score": 1,
"hits": [
{
"_index": ".kibana",
"_type": "doc",
"_id": "config:6.3.1",
"_score": 1,
"_source": {
"type": "config",
"updated_at": "2020-06-23T13:37:22.129Z",
"config": {
"buildNum": 17276,
"telemetry:optIn": false
}
}
},
{
"_index": "test_index",
"_type": "doc",
"_id": "8",
"_score": 1,
"_source": {
"username": "opop",
"age": 689,
"birth": "2008-10-15",
"year": 96,
"tags": [
"9",
"ll"
],
"money": "112.1"
}
},
{
"_index": "test_index",
"_type": "doc",
"_id": "2",
"_score": 1,
"_source": {
"username": "das",
"age": 12,
"birth": "1995-12-15",
"year": 12,
"tags": [
"12",
"fashion"
],
"money": "1.1"
}
},
{
"_index": "test_index",
"_type": "doc",
"_id": "4",
"_score": 1,
"_source": {
"username": "opop",
"age": 69,
"birth": "1986-10-15",
"year": 96,
"tags": [
"9",
"ll"
],
"money": "121.1"
}
},
{
"_index": "test_index",
"_type": "doc",
"_id": "1",
"_score": 1,
"_source": {
"username": "samualz",
"age": 14,
"birth": "1991-12-15",
"year": 18,
"tags": [
"boy",
"fashion"
],
"money": "100.1"
}
},
{
"_index": "test_index",
"_type": "doc",
"_id": "7",
"_score": 1,
"_source": {
"username": "opop",
"age": 69,
"birth": "2006-10-15",
"year": 96,
"tags": [
"9",
"ll"
],
"money": "121.1"
}
},
{
"_index": "test_index",
"_type": "doc",
"_id": "3",
"_score": 1,
"_source": {
"username": "abc",
"age": 8,
"birth": "1995-10-15",
"year": 12,
"tags": [
"13",
"ple"
],
"money": "21.1"
}
}
]
}
}
获取客户端
package com.zyd.es.config;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.transport.client.PreBuiltTransportClient;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.net.InetAddress;
import java.net.UnknownHostException;
@ConfigurationProperties(prefix = "es")
@Configuration
public class EsCommonConfig {
private String clusterName;
private String nodes;
@Bean
public TransportClient getClient() throws UnknownHostException {
String[] node = nodes.split(",");
Settings settings = Settings
.builder()
.put("cluster.name", clusterName)
//自动发现我们其他的es的服务器
.put("client.transport.sniff", "true")
.build();
TransportClient client = new PreBuiltTransportClient(settings)
.addTransportAddress(new TransportAddress(InetAddress.getByName(node[0].split(":")[0]), Integer.valueOf(node[0].split(":")[1])))
.addTransportAddress(new TransportAddress(InetAddress.getByName(node[1].split(":")[0]), Integer.valueOf(node[1].split(":")[1])))
.addTransportAddress(new TransportAddress(InetAddress.getByName(node[2].split(":")[0]), Integer.valueOf(node[2].split(":")[1])));
return client;
}
}
模糊匹配查询(bug未解决: 无法匹配数字)
TransportClient client = getClient();
Map<String, String> map = new HashMap<>();
map.put("username", "?amualz");
BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
for (Map.Entry<String, String> entry : map.entrySet()) {
String value = entry.getValue();
String key = entry.getKey();
//使用通配符查询，*代表0个或多个字母，?代表0个或1个字母。
boolQueryBuilder.must(QueryBuilders.wildcardQuery(key, value));
}
SearchResponse response = client.prepareSearch("test_index").setTypes("doc")
.setQuery(boolQueryBuilder)
.setExplain(true)
.execute()
.actionGet();
List list = responseToList(client, response);
System.out.println(list.toString());
精确匹配 termQuery
常见的是Bool查询，包括must、should、filter、must_not,依次对应为and,or,过滤,非的关系
@Test
public void query() throws UnknownHostException {
TransportClient client = getClient();
Map<String, String> map = new HashMap<>();
map.put("username", "samualz");
BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
/*
for (Map.Entry<String, String> entry : map.entrySet()) {
String value = entry.getValue();
String key = entry.getKey();
//使用通配符查询，*代表0个或多个字母，?代表0个或1个字母。
boolQueryBuilder.must(QueryBuilders.wildcardQuery(key, value));
}
*/
for (Map.Entry<String, String> entry : map.entrySet()) {
String value = entry.getValue();
String key = entry.getKey();
//使用通配符查询，*代表0个或多个字母，?代表0个或1个字母。
boolQueryBuilder.must(QueryBuilders.termQuery(key, value));
}
SearchResponse response = client.prepareSearch("test_index").setTypes("doc")
.setQuery(boolQueryBuilder)
.setExplain(true)
.execute()
.actionGet();
List list = responseToList(client, response);
System.out.println(list.toString());
}
执行全文检索 Multi Match Query 搜索所有的value值
@Test
public void MultiMatchQueryBuilderQuery() throws UnknownHostException {
TransportClient client = getClient();
MultiMatchQueryBuilder queryBuilder = new MultiMatchQueryBuilder("samualz");
SearchResponse response = client.prepareSearch("test_index").setTypes("doc")
.setQuery(queryBuilder)
.setExplain(true)
.execute()
.actionGet();
List list = responseToList(client, response);
System.out.println(list.toString());
}
同时也支持多字段匹配
根据id查询数据
@Test
public void queryById() throws UnknownHostException {
TransportClient client = getClient();
GetResponse getResponse = client.prepareGet("test_index", "doc", "1").get();
String sourceAsString = getResponse.getSourceAsString();
System.out.println(sourceAsString);
}