ElasticSearch 6.4 REST-API（2）--------索引数据

      这里索引，实际就是增加数据的意思，ES中常用叫法，本篇及后续都是参照高级REST-API实现的。提交的数据的格式有多种，下面介绍几种常用的。

创建Client

public static RestHighLevelClient  getClient(){
        RestHighLevelClient client = new RestHighLevelClient(
                RestClient.builder(
                        new HttpHost(ES_IP, ES_PORT, "http")));
        return client;
    }

1、map形式 

/**
     * 索引数据 
     * @param index 索引
     * @param type  类型
     * @param id 文档的id
     * @param json 数据格式
     * @return
     * @throws Exception
     */
    public static IndexResponse index(String index,String type,String id, Map<String,Object> json) throws Exception{
        RestHighLevelClient restClient = getClient();
        IndexResponse  indexResponse = null;
        try {
            IndexRequest indexRequest = new IndexRequest(index, type, id);
            indexRequest.source(json);
            indexResponse = restClient.index(indexRequest, RequestOptions.DEFAULT);
        } catch (Exception e) {
            e.printStackTrace();
        }finally {
            restClient.close();
        }
        return indexResponse;
    }

 2、Json格式 

/**
     * json形式索引数据
     * 
     * @param index 索引
     * @param type 类型
     * @param id 文档id
     * @param jsonString json格式数据
     * @return
     * @throws Exception
     */
    public static IndexResponse index(String index,String type,String id, String jsonString) throws Exception{
        RestHighLevelClient restClient = getClient();
        IndexResponse  indexResponse = null;
        try {
            IndexRequest indexRequest = new IndexRequest(index, type, id);
            indexRequest.source(jsonString, XContentType.JSON);
            indexResponse = restClient.index(indexRequest, RequestOptions.DEFAULT);
        } catch (Exception e) {
            e.printStackTrace();
        }finally {
            restClient.close();
        }
        return indexResponse;
    }

   main函数

 public static void main(String [] args) throws Exception{
        String index = "robot";
        String type ="t_user";
        String id = UUID.randomUUID().toString();
     /* String json = "{" +
                "\"name\":\"kimchy\"," +
                "\"age\":\"18\"," +
                "\"birth\":\"36542869\"" +
                "}"; */
        Map<String, Object> json = new HashMap<>();
        jsonMap.put("name", "李逍遥");
        jsonMap.put("age", 24);
        jsonMap.put("birth", "564822559865");
        IndexResponse indexResponse = index(index, type, id, json);
        // TODO: 2018/9/9 
    }

数据的格式远不止以上2中，可以自己看看indexRequest.source()的实现方法。