網上資源比較亂、比較雜，稍微總結一下，幫助大家避免像我一樣走彎路…………

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首先引入maven依賴：

<!--elasticsearch-->
        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>transport</artifactId>
            <version>5.5.0</version>
        </dependency>
 

公共client：獲取ES的client，任何操作都需要此client（類似httpclient吧，傳送請求操作）：

// 設定叢集名稱cluster.name:
        Settings settings = Settings.builder().put("cluster.name", "betawoo_es").build();

//特別注意，java操作埠為：9300
        Client client = new PreBuiltTransportClient(settings)
                .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("139.116.196.10"), 9300));
 

1、新建索引

//json字串，也可以直接傳Map
        String json = "{\"title\":\"我從windows建立\",\"label\":[\"美式沙發\"],\"create_date\":\"2017-11-1 15:41:01\"}";
        IndexResponse response = client.prepareIndex("index_名稱", "type_名稱").setId("0").setSource(json).execute().actionGet();
        // Index name
        String _index = response.getIndex();
        // Type name
        String _type = response.getType();
        // Document ID (generated or not)
        String _id = response.getId();
        // Version
        long _version = response.getVersion();
        System.out.println("-------:"+_id+"建立成功！");
 

DeleteResponse deleteresponse = client.prepareDelete("index_名稱", "type_名稱","9db3f12721624f6a888e0c62181ffe8a")
                .execute()
                .actionGet();
        System.out.println(deleteresponse.getVersion());

3、分頁搜尋

QueryBuilder包路徑：importorg.elasticsearch.index.query.QueryBuilder;

//搜尋匹配內容，等同：curl -X GET http://localhost:9200/test/kind/_search?pretty -d '{"query" : {"match" : {"label" : "映享優選"}}}'
        QueryBuilder matchQuery = QueryBuilders.matchQuery("label", "映享優選");
        SearchResponse response = client.prepareSearch("portal").setTypes("product")//設定索引和型別
                .setQuery(matchQuery).setFrom(0).setSize(60)//設定分頁引數（獲取1-60條，0開始）類似mysql limit分頁
                .execute().actionGet();
        //獲取查詢結果集
        SearchHits searchHits = response.getHits();
        System.out.println("共搜到:"+searchHits.getTotalHits()+"條結果!");
        //遍歷結果
        for(SearchHit hit:searchHits){
            System.out.println("String方式列印文件搜尋內容:");
            System.out.println(hit.getSourceAsString());
//            System.out.println(hit.getId());
        }