1.引入dependency
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-elasticsearch</artifactId>
<version>1.4.0.M1</version>
</dependency>
2:创建\添加索引
3.创建实体类
package testweb;import org.springframework.data.elasticsearch.annotations.Document;@Document(indexName="yananindex",type="yanantype")
public class Yanan {
private int id;
private String name;
private String gender;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
}
准备工作做完了,下面开始测试
4.queryForObject\queryForList\聚合查询\统计数量\判断索引是否存在\删除指定id的索引
package testweb;import java.util.List;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.ImmutableSettings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.aggregations.AggregationBuilders;
import org.elasticsearch.search.aggregations.Aggregations;
import org.elasticsearch.search.aggregations.bucket.terms.StringTerms;
import org.elasticsearch.search.aggregations.bucket.terms.TermsBuilder;
import org.elasticsearch.search.aggregations.bucket.terms.Terms.Bucket;
import org.springframework.data.elasticsearch.core.ElasticsearchTemplate;
import org.springframework.data.elasticsearch.core.ResultsExtractor;
import org.springframework.data.elasticsearch.core.query.GetQuery;
import org.springframework.data.elasticsearch.core.query.NativeSearchQueryBuilder;public class TestES {
static TransportClient transportClient;
static ElasticsearchTemplate elasticsearchTemplate; public static void main(String[] args) {
elasticsearchTemplate=getElasticsearchTemplate("localhost","elasticsearch_bak",9303);
//queryForObject();//根据索引id查询文档
//queryForList();
//aggregationQuery();//聚合查询
//count();
//indexExists(Yanan.class);
deleteById();
}
private static void deleteById() {
// IndexQueryBuilder indexquery=new IndexQueryBuilder().withId("1").withObject(Yanan.class);
//String delete = elasticsearchTemplate.delete("yananindex", "yanantype", "10");//索引的id
String delete = elasticsearchTemplate.delete(Yanan.class, "10");//索引的id
System.out.println(delete);//删除的索引的id
}
private static void indexExists(Class<Yanan> clazz) {
if(elasticsearchTemplate.indexExists(clazz)){
System.out.println("true");
}else{
System.out.println(false);
}
}
private static void count() {
NativeSearchQueryBuilder searchQuery=new NativeSearchQueryBuilder();
BoolQueryBuilder bqb = QueryBuilders.boolQuery();
bqb.must(QueryBuilders.termQuery("gender","female"));
searchQuery.withIndices("yananindex").withQuery(bqb);
long count = elasticsearchTemplate.count(searchQuery.build());
System.out.println(count);
} private static void aggregationQuery() {
TermsBuilder termsBuilder = AggregationBuilders.terms("maleCount").field("name").size(10);
NativeSearchQueryBuilder searchQuery=new NativeSearchQueryBuilder();
BoolQueryBuilder bqb = QueryBuilders.boolQuery();
bqb.must(QueryBuilders.termQuery("gender","male"));
searchQuery.withIndices("yananindex").withQuery(bqb).addAggregation(termsBuilder);
Aggregations aggregations = elasticsearchTemplate.query(searchQuery.build(), new ResultsExtractor<Aggregations>() {
@Override
public Aggregations extract(SearchResponse response) {
return response.getAggregations();
}
});
StringTerms modelTerms = (StringTerms)aggregations.asMap().get("maleCount");
List<Bucket> buckets = modelTerms.getBuckets();
for(int i=0;i<buckets.size();i++){
System.out.println(buckets.get(i).getKey()+"\t"+buckets.get(i).getDocCount());
}
}
private static void queryForList() {
NativeSearchQueryBuilder searchQuery = new NativeSearchQueryBuilder();
BoolQueryBuilder bqb = QueryBuilders.boolQuery();
bqb.must(QueryBuilders.termQuery("gender","male"));
searchQuery.withIndices("yananindex").withQuery(bqb);
List<Yanan> list = elasticsearchTemplate.queryForList(searchQuery.build(), Yanan.class);
for(int i=0;i<list.size();i++){
Yanan yanan = list.get(i);
System.out.println(yanan.getName()+"\t"+yanan.getGender()+"\t"+yanan.getId());
} }
private static void queryForObject() {
GetQuery query = new GetQuery();
query.setId("1");// 索引的id
Yanan yanan = elasticsearchTemplate.queryForObject(query, Yanan.class);
System.out.println(yanan.getGender());
System.out.println(yanan.getName());
System.out.println(yanan.getId());// 实体的id
} static ElasticsearchTemplate getElasticsearchTemplate(String ip,String clusterName,int port){//<a href="http://blog.csdn.net/ty4315/article/details/52434296" rel="external nofollow" target="_blank">@参考文章1</a>,<a href="http://blog.csdn.net/ljc2008110/article/details/48630609" rel="external nofollow" target="_blank">@参考文章2</a>
Settings setting = ImmutableSettings.settingsBuilder().put("cluster.name", clusterName)// 指定集群名称
.put("client.transport.sniff", true)// 启动嗅探功能,客户端去嗅探整个集群的状态，把集群中其它机器的ip地址加到客户端中，这样做的好处是一般你不用手动设置集群里所有集群的ip到连接客户端，它会自动帮你添加，并且自动发现新加入集群的机器。
.build();
// 创建客户端 通过setting来创建，若不指定则默认链接的集群名为elasticsearch 链接使用tcp协议即9303
transportClient = new TransportClient(setting);
TransportAddress transportAddress = new InetSocketTransportAddress(ip, port);
transportClient.addTransportAddresses(transportAddress);
elasticsearchTemplate = new ElasticsearchTemplate(transportClient);
return elasticsearchTemplate;
}
}
