83_熟练掌握ES Java API_基于upsert实现汽车最

<meta charset="utf-8">

83_熟练掌握ES Java API_基于upsert实现汽车最新价格的调整

做一个汽车零售数据的mapping，我们要做的第一份数据，其实汽车信息

maven工程目录结构:

PUT /car_shop
{
    "mappings": {
        "cars": {
            "properties": {
                "brand": {
                    "type": "text",
                    "analyzer": "ik_max_word",
                    "fields": {
                        "raw": {
                            "type": "keyword"
                        }
                    }
                },
                "name": {
                    "type": "text",
                    "analyzer": "ik_max_word",
                    "fields": {
                        "raw": {
                            "type": "keyword"
                        }
                    }
                }
            }
        }
    }
}

首先的话呢，第一次调整宝马320这个汽车的售价，我们希望将售价设置为32万，用一个upsert语法，如果这个汽车的信息之前不存在，那么就insert，如果存在，那么就update

IndexRequest indexRequest = new IndexRequest("car_shop", "cars", "1")
        .source(jsonBuilder()
            .startObject()
                .field("brand", "宝马")
                .field("name", "宝马320")
                .field("price", 320000)
                .field("produce_date", "2017-01-01")
            .endObject());

UpdateRequest updateRequest = new UpdateRequest("car_shop", "cars", "1")
        .doc(jsonBuilder()
            .startObject()
                .field("price", 320000)
            .endObject())
        .upsert(indexRequest);       
               
client.update(updateRequest).get();

IndexRequest indexRequest = new IndexRequest("car_shop", "cars", "1")
        .source(jsonBuilder()
            .startObject()
                .field("brand", "宝马")
                .field("name", "宝马320")
                .field("price", 310000)
                .field("produce_date", "2017-01-01")
            .endObject());
UpdateRequest updateRequest = new UpdateRequest("car_shop", "cars", "1")
        .doc(jsonBuilder()
            .startObject()
                .field("price", 310000)
            .endObject())
        .upsert(indexRequest);              
client.update(updateRequest).get();

完整的源码信息:

UpsertCarInfoApp

public class UpsertCarInfoApp {
    
    @SuppressWarnings({ "unchecked", "resource" })
    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));
    
        IndexRequest indexRequest = new IndexRequest("car_shop", "cars", "1")
                .source(XContentFactory.jsonBuilder()
                            .startObject()
                                .field("brand", "宝马")
                                .field("name", "宝马320")
                                .field("price", 310000)
                                .field("produce_date", "2017-01-01")
                            .endObject());
        
        UpdateRequest updateRequest = new UpdateRequest("car_shop", "cars", "1")
                .doc(XContentFactory.jsonBuilder()
                        .startObject()
                            .field("price", 310000)
                        .endObject())
                .upsert(indexRequest); 
        
        UpdateResponse updateResponse = client.update(updateRequest).get();
    
        System.out.println(updateResponse.getVersion()); 
    }
    
}