elasticsearch笔记(4) java操作es的查询_04----- prefix查询 fuzzy查询 wildcard查询 range查询 regexp查询
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以下所有匹配的查询因为涉及到匹配, 所以效率低.(regexp查询 wildcard查询 fuzzy查询 prefix查询)
一. prefix前缀查询, 比如某个field是"途虎科技", 搜索词是"途虎";则可以查询出来;
和match的区别, 如果"途虎科技"是"keyword"类型, 是查询不到的.
1.1 kibana中用prefix查询
1.2 java中用prefix查询
1 @Test
2 public void getPrefixTest() throws IOException {
3 // 1. 创建查询对象
4 String index = "sms-logs-index";
5 String type = "sms-logs-type";
6 SearchRequest searchRequest = new SearchRequest(index);//指定索引
7 searchRequest.types(type);//指定类型
8 // 2. 封装查询条件
9 SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
10 searchSourceBuilder.query(QueryBuilders.prefixQuery("corpName","途虎"));
11 searchRequest.source(searchSourceBuilder);
12
13 // 3.执行查询
14 // client执行
15 HttpHost httpHost = new HttpHost("192.168.43.30", 9200);
16 RestClientBuilder restClientBuilder = RestClient.builder(httpHost);
17 RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder);
18 SearchResponse search = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
19
20 // 4.获取数据(source中的数据)
21 SearchHit[] hits = search.getHits().getHits();
22 for(SearchHit searchHit : hits){
23 System.out.println(searchHit);
24 }
25 }
二. fuzzy模糊匹配
当匹配的内容中有途虎两个字不错误, 后面的有错别字, 可以匹配.
2.1 kibana中用fuzzy查询
2.2java中用fuzzy查询
1 @Test
2 public void getFuzzyTest() throws IOException {
3 // 1. 创建查询对象
4 String index = "sms-logs-index";
5 String type = "sms-logs-type";
6 SearchRequest searchRequest = new SearchRequest(index);//指定索引
7 searchRequest.types(type);//指定类型
8 // 2. 封装查询条件
9 SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
10 searchSourceBuilder.query(QueryBuilders.fuzzyQuery("corpName","途虎养伡").prefixLength(2));
11 searchRequest.source(searchSourceBuilder);
12
13 // 3.执行查询
14 // client执行
15 HttpHost httpHost = new HttpHost("192.168.43.30", 9200);
16 RestClientBuilder restClientBuilder = RestClient.builder(httpHost);
17 RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder);
18 SearchResponse search = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
19
20 // 4.获取数据(source中的数据)
21 SearchHit[] hits = search.getHits().getHits();
22 for(SearchHit searchHit : hits){
23 System.out.println(searchHit);
24 }
25 }
三. wildcard查询(未知查询)通配查询
3.2 在java中使用wildcard查询
@Test
public void getWildcardTest() throws IOException {
// 1. 创建查询对象
String index = "sms-logs-index";
String type = "sms-logs-type";
SearchRequest searchRequest = new SearchRequest(index);//指定索引
searchRequest.types(type);//指定类型
// 2. 封装查询条件
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query(QueryBuilders.wildcardQuery("corpName","途虎*"));
searchRequest.source(searchSourceBuilder);
// 3.执行查询
// client执行
HttpHost httpHost = new HttpHost("192.168.43.30", 9200);
RestClientBuilder restClientBuilder = RestClient.builder(httpHost);
RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder);
SearchResponse search = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
// 4.获取数据(source中的数据)
SearchHit[] hits = search.getHits().getHits();
for(SearchHit searchHit : hits){
System.out.println(searchHit);
}
}
四. range查询
在某个范围内的查询:
4.1 查询fee字段的范围是0-10的
4.2 java中用range查询
@Test
public void getrangesTest() throws IOException {
// 1. 创建查询对象
String index = "sms-logs-index";
String type = "sms-logs-type";
SearchRequest searchRequest = new SearchRequest(index);//指定索引
searchRequest.types(type);//指定类型
// 2. 封装查询条件
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query(QueryBuilders.rangeQuery("fee").gte(0).lte(10));
searchRequest.source(searchSourceBuilder);
// 3.执行查询
// client执行
HttpHost httpHost = new HttpHost("192.168.43.30", 9200);
RestClientBuilder restClientBuilder = RestClient.builder(httpHost);
RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder);
SearchResponse search = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
// 4.获取数据(source中的数据)
SearchHit[] hits = search.getHits().getHits();
for(SearchHit searchHit : hits){
System.out.println(searchHit);
}
}
五 regexp查询: 正则查询,
5.1 regexp在在kibana
5.2 regexp在java中
1 @Test
2 public void regexTest() throws IOException {
3 // 1. 创建查询对象
4 String index = "sms-logs-index";
5 String type = "sms-logs-type";
6 SearchRequest searchRequest = new SearchRequest(index);//指定索引
7 searchRequest.types(type);//指定类型
8 // 2. 封装查询条件
9 SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
10 searchSourceBuilder.query(QueryBuilders.regexpQuery("mobile","159[0-9]{7}"));
11 searchRequest.source(searchSourceBuilder);
12
13 // 3.执行查询
14 // client执行
15 HttpHost httpHost = new HttpHost("192.168.43.30", 9200);
16 RestClientBuilder restClientBuilder = RestClient.builder(httpHost);
17 RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder);
18 SearchResponse search = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
19
20 // 4.获取数据(source中的数据)
21 SearchHit[] hits = search.getHits().getHits();
22 for(SearchHit searchHit : hits){
23 System.out.println(searchHit);
24 }
25 }
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