Elasticsearch 之（47） Java API 基于bulk实现多4S店销售数据批量上传

业务场景：有一个汽车销售公司，拥有很多家4S店，这些4S店的数据，都会在一段时间内陆续传递过来，汽车的销售数据，现在希望能够在内存中缓存比如1000条销售数据，然后一次性批量上传到es中去

初始化数据

PUT /car_shop/sales/1
{
    "brand": "宝马",
    "name": "宝马320",
    "price": 320000,
    "produce_date": "2017-01-01",
    "sale_price": 300000,
    "sale_date": "2017-01-21"
}

PUT /car_shop/sales/2
{
    "brand": "宝马",
    "name": "宝马320",
    "price": 320000,
    "produce_date": "2017-01-01",
    "sale_price": 300000,
    "sale_date": "2017-01-21"
}

package com.es.app;


import org.elasticsearch.action.bulk.BulkItemResponse;
import org.elasticsearch.action.bulk.BulkRequestBuilder;
import org.elasticsearch.action.bulk.BulkResponse;
import org.elasticsearch.action.delete.DeleteRequestBuilder;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexRequestBuilder;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.action.update.UpdateRequestBuilder;
import org.elasticsearch.action.update.UpdateResponse;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.transport.client.PreBuiltTransportClient;

import java.net.InetAddress;

public class BulkCarInfoApp {

    public static void main(String[] args) throws Exception{
        Settings settings = Settings.builder()
                .put("cluster.name", "elasticsearch")
                .put("client.transport.sniff", true)
                .build();

        TransportClient client = new PreBuiltTransportClient(settings)
                .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("localhost"), 9300));

        BulkRequestBuilder bulkRequestBuilder = client.prepareBulk();

        IndexRequestBuilder indexRequestBuilder = client.prepareIndex("car_shop", "sales", "3")
                .setSource(XContentFactory.jsonBuilder()
                .startObject()
                        .field("brand", "奔驰")
                        .field("name", "奔驰C200")
                        .field("price", 350000)
                        .field("produce_date", "2017-01-20")
                        .field("sale_price", 320000)
                        .field("sale_date", "2017-01-25")
                .endObject());
        bulkRequestBuilder.add(indexRequestBuilder);

        UpdateRequestBuilder updateRequestBuilder = client.prepareUpdate("car_shop", "sales", "1")
                .setDoc(XContentFactory.jsonBuilder()
                .startObject()
                    .field("sale_price", 290000)
                .endObject());
        bulkRequestBuilder.add(updateRequestBuilder);

        DeleteRequestBuilder deleteRequestBuilder = client.prepareDelete("car_shop", "sales", "2");
        bulkRequestBuilder.add(deleteRequestBuilder);

        BulkResponse bulkResponse = bulkRequestBuilder.get();

        for(BulkItemResponse bulkItemResponse : bulkResponse.getItems()) {
            System.out.println("version: " + bulkItemResponse.getVersion());
        }

        client.close();
    }

}