在进行查询之前要先给ll索引中插入数据:

 POST /ll/product/1
{
	"id":1,
 "title": "小米手机Mix",
 "category": "手机",
 "brand": "小米",
 "price": 2899.00,
 "images": "http://image.ll.com/12479122.jpg"

}

POST /ll/product/2
{
	"id":2,
 "title": "坚果手机R1",
 "category": "手机",
 "brand": "锤子",
 "price": 3699.00,
 "images": "http://image.ll.com/12479122.jpg"

}

POST /ll/product/3
{
	"id":3,
 "title": "华为META20",  
 "category": "手机",
 "brand": "华为",
 "price": 4499.00,
 "images": "http://image.ll.com/12479122.jpg"

}

POST /ll/product/4
{
	"id":4,
 "title": "小米Pro",
 "category": "手机",
 "brand": "小米",
 "price": 4299.00,
 "images": "http://image.ll.com/12479122.jpg"

}

POST /ll/product/5
{
	"id":5,
 "title": "荣耀V20",
 "category": "手机",
 "brand": "华为",
 "price": 2799.00,
 "images": "http://image.ll.com/12479122.jpg"

}

            将以上代码复制到kibana的控制台上运行

         运行完后可以到打开head插件查看信息

 

        数据准备完成后我们就可以开始查询了

      1.查询所有索引的数据          match_all

  @Test//搜索数据
    public void search() throws IOException{
        SearchRequest request = new SearchRequest();//搜索对象

        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();//构建工具
         //绑定类型       match_all,math,bool,term,fuzzy,filter
        sourceBuilder.query(QueryBuilders.matchAllQuery());
        //执行查询操作
        request.source(sourceBuilder);
        //执行查询搜索
        SearchResponse response = restHighLevelClient.search(request, RequestOptions.DEFAULT);
        //解析响应的结果数据
        SearchHit[] hits = response.getHits().getHits();
        for (SearchHit hit : hits) {
            String json = hit.getSourceAsString();//转为json格式
            Producter producter = gson.fromJson(json, Producter.class);//转为java对象
            System.err.println(producter);
        }
    }

        

        2.关键字查询           match 

   @Test//matchquery
    public void matchQuery()throws Exception{
        SearchRequest request = new SearchRequest();

        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        sourceBuilder.query(QueryBuilders.matchQuery("title", "小米"));

        request.source(sourceBuilder);
        SearchResponse response = restHighLevelClient.search(request, RequestOptions.DEFAULT);
        SearchHit[] hits = response.getHits().getHits();
        for (SearchHit hit : hits) {
            String json = hit.getSourceAsString();//转为json格式
            Producter producter = gson.fromJson(json, Producter.class);//转为java对象
            System.err.println(producter);
        }
    }

        通过上述两个查询我们发现,查询数据的时候会有很多冗余的部分,所以我们可以将这一部分代码进行封装,在查询的时候调用这个方法,下面的查询我都会调用封装的方法

    public void basicQuery(SearchSourceBuilder sourceBuilder) throws Exception{
        SearchRequest request = new SearchRequest();

        request.source(sourceBuilder);

        SearchResponse response = restHighLevelClient.search(request, RequestOptions.DEFAULT);
        //解析响应的结果数据
        SearchHit[] hits = response.getHits().getHits();
        for (SearchHit hit : hits) {
            String json = hit.getSourceAsString();//转为json格式
            Producter producter = gson.fromJson(json, Producter.class);//转为java对象
            System.err.println(producter);
        }
    }

         3.范围查询         range

@Test//范围查询
    public void rangeQuery()  throws Exception{
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        sourceBuilder.query(QueryBuilders.rangeQuery("price").gte(3000).lt(4300));
        basicQuery(sourceBuilder);
    }

         4.过滤查询        source

 @Test//过滤查询
    public void  sourceQuery()  throws Exception{
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        sourceBuilder.query(QueryBuilders.matchAllQuery());
        //添加过滤条件
        sourceBuilder.fetchSource(new String[]{"id","title","price"},null);
        basicQuery(sourceBuilder);
    }

       5.排序        sort

    @Test//排序 order
    public void  orderQuery()  throws Exception{
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        sourceBuilder.query(QueryBuilders.matchAllQuery());
        //添加排序条件
        sourceBuilder.sort("price", SortOrder.DESC);//desc降序        asc升序
        basicQuery(sourceBuilder);
    }

        6. 分页        page

 @Test//分页 from当前页第一条数据的索引     size当前页的大小
    public void  pageQuery()  throws Exception{
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        sourceBuilder.query(QueryBuilders.matchAllQuery());
        //添加分页条件
        int page = 2;//第二页的数据
        int size = 3;//每页展示三条数据
        sourceBuilder.from((page-1)*size);
        sourceBuilder.size(size);


        basicQuery(sourceBuilder);
    }