java操作elasticsearch實現查詢刪除和查詢所有

后期博客本人都只給出代碼，具體的說明在代碼中也有注釋。

　　1、查詢刪除

    //查詢刪除：將查詢到的數據進行刪除
    @Test
    public void test8() throws UnknownHostException {
        //1、指定es集群  cluster.name 是固定的key值，my-application是ES集群的名稱
                Settings settings = Settings.builder().put("cluster.name", "my-application").build();
                //2.創建訪問ES服務器的客戶端
                TransportClient client = new PreBuiltTransportClient(settings)
                        //獲取es主機中節點的ip地址及端口號(以下是單個節點案例)
                                        .addTransportAddress(new TransportAddress(InetAddress.getByName("192.168.1.94"), 9300));
                BulkByScrollResponse response = DeleteByQueryAction.INSTANCE
                        .newRequestBuilder(client)
                        .filter(QueryBuilders.matchQuery("title", "工廠"))
                        .source("index1")
                        .get();
                //刪除並返回刪除的個數
                long counts =response.getDeleted();
                System.out.println(counts);
    }

2、查詢所有（match_all）

　　

//match_all查詢所有
    @Test
    public void test9() throws UnknownHostException {
        //1、指定es集群  cluster.name 是固定的key值，my-application是ES集群的名稱
        Settings settings = Settings.builder().put("cluster.name", "my-application").build();
        //2.創建訪問ES服務器的客戶端
        TransportClient client = new PreBuiltTransportClient(settings)
                //獲取es主機中節點的ip地址及端口號(以下是單個節點案例)
                                .addTransportAddress(new TransportAddress(InetAddress.getByName("192.168.1.94"), 9300));
        QueryBuilder qBuilder = QueryBuilders.matchAllQuery();
        SearchResponse sResponse = client.prepareSearch("lib3")
                .setQuery(qBuilder)
                .get();
        SearchHits hits = sResponse.getHits();
        for(SearchHit hit:hits) {
            System.out.println(hit.getSourceAsString());
            //將獲取的值轉換成map的形式
            Map<String, Object> map = hit.getSourceAsMap();
            for(String key:map.keySet()) {
                System.out.println(key +" key對應的值為：" +map.get(key));
            }
        }

 

下一篇博客本人將書寫java操作elasticsearch實現部分的條件查詢（mutch/multimatch /term/terms/reange）。對后期博客感興趣的朋友可以關注交流，轉發請說明出處，本人的博客地址為：https://www.cnblogs.com/chenyuanbo/

技術在於交流！