Es簡單條件查詢

一：先看一下es的語句以及查詢結果：

 

 

 我這邊使用的條件是is_device要么是工控要么是資產

二：java代碼部分

　　關於es的操作，java里面不需要添加mapper層，只要在service以及controller層里面操作就OK了

　　1：在service里面添加接口

  //首頁的工控資產詳情在es里面查詢結果
    List<Object> getBaseCurrencyByEs();

　　2：在實現類里面實現邏輯以及步驟，es查詢基本就那7步

@Override
    public List<Object> getBaseCurrencyByEs() {
        //存放最終數據
        ArrayList<Object> list = new ArrayList<>();
        //1.創建搜索請求對象
        SearchRequest searchRequest = new SearchRequest("mid_assets_shanxi").types("mid_assets_shanxi");
        //2.設置搜索源配置
        SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
        //3.構建QueryBuilder對象指定查詢方式和查詢條件
        QueryBuilder queryBuilder = QueryBuilders.termQuery("is_device.keyword", "通用設備");
        //4,將QuseryBuilder對象設置到SearchSourceBuilder對象中
        searchSourceBuilder.query(queryBuilder);
        //5，將SearchSourceBuilder設置到SearchRequest中
        searchRequest.source(searchSourceBuilder);
        try {
            //6,調用方法查詢數據
            SearchResponse searchResponse = restHighLevelClient.search(searchRequest);
            System.err.println("es語句：" + searchRequest);
            //7,解析返回結果
            SearchHits hits = searchResponse.getHits();
            //得到數據
            SearchHit[] searchHits = hits.getHits();
            for (SearchHit hit : searchHits){
                Map<String, Object> result = hit.getSourceAsMap();
                list.add(result);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return list;
    }

　　3：在controller層里面調用接口

@GetMapping("getBaseCurrencyByEs")
@ApiOperation("通用資產詳情的數據")
    public Result getBaseCurrencyByEs(){
        List<Object> baseIndustrial=bigscreenStatisticsAllService.getBaseCurrencyByEs();
        return Result.ok(baseIndustrial);
    }

三：測試接口是否查詢到了數據：