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

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

@Test
    public void getPrefixTest() 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.prefixQuery("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);
        }
    }

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

   @Test
    public void getFuzzyTest() 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.fuzzyQuery("corpName","途虎养伡").prefixLength(2));
        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);
        }
    }

 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

 @Test
    public void regexTest() 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.regexpQuery("mobile","159[0-9]{7}"));
        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);
        }
    }

         

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