文章目录
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);
}
