Question

使用JestClient从elasticsearch获取Double值而不是Integer。

Index mapping -



               "makeId": {
                  "type": "integer"
               },
               "makeName": {
                  "type": "keyword"
               },
               "yearId": {
                  "type": "integer"
               }

我正在使用JestClient（在java中）获取字段值，我希望makeId和yearId值为整数，但值返回为Double，

Jest maven Depandency -

<dependency>
   <groupId>io.searchbox</groupId>
   <artifactId>jest</artifactId>
   <version>2.0.0</version>
</dependency>

Java代码 -

String[] reqFields = { "makeName","makeId","yearId" };
 SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
                    BoolQueryBuilder boolquery = QueryBuilders.boolQuery();
                    boolquery.must(QueryBuilders.matchQuery("yearId", yearId));
                    searchSourceBuilder.query(boolquery).fetchSource(reqFields, null).size(9000);

                    Search.Builder searchBuilder = new Search.Builder(searchSourceBuilder.toString()).addIndex(indexName).addType(indexType);
                    SearchResult result = jestClient.execute(searchBuilder.build());
                    List<Hit<Map, Void>> hits = result.getHits(Map.class);

在此行之后，SearchResult将Source对象作为整数值（正如我所料）

SearchResult result = jestClient.execute(searchBuilder.build());

回应： -

{＆＃34;把＆＃34;：29，＆＃34; TIMED_OUT＆＃34;：假，＆＃34; _shards＆＃34; {＆＃34;总＆＃34;：5，＆＃34 ;成功＆＃34;：5，＆＃34;失败＆＃34;：0}，＆＃34;命中＆＃34; {＆＃34;总＆＃34;：1466，＆＃34; MAX_SCORE＆＃34 ;: 1.0＆＃34;命中＆＃34;：[{＆＃34; _index＆＃34;：＆＃34;车辆＆＃34;＆＃34; _type＆＃34;：＆＃34; vehicle_dev＆＃34;，＆＃34; _id＆＃34;：＆＃34; 836＆＃34;＆＃34; _score＆＃34;：1.0，＆＃34; _source＆＃34; {＆＃34; makeId＆＃34;：2，＆＃34; makeName＆＃34;：＆＃34;别克＆＃34;＆＃34; yearId＆＃34;：2012}}，{＆＃34; _index＆＃34;：＆＃34;车辆＆＃34;，＆＃34; _type＆＃34;：＆＃34; vehicle_dev＆＃34;＆＃34; _id＆＃34;：＆＃34; 1915＆＃34;＆＃34; _score＆＃34;：1.0，＆＃34; _source＆＃34; {＆＃34; makeId＆＃34;：5，＆＃34; makeName＆＃34;：＆＃34;雪佛兰＆＃34;＆＃34; yearId＆＃34;：2012}}，{＆＃34; _index＆＃34;：＆＃34;车辆＆＃34;＆＃34; _type＆＃34;：＆＃34; vehicle_dev＆＃34;＆＃34; _id＆＃34;：＆＃34; 2511＆＃ 34;，＆＃34; _score＆＃34;：1.0，＆＃34; _source＆＃34; {＆＃34; makeId＆＃34;：5，＆＃34; makeName＆＃34;：＆＃34;雪佛兰＆＃ 34;，＆＃34; yearId＆＃34;：2012}}，{＆＃34; _index＆＃34;：＆＃34;车辆＆＃34;＆＃34; _type＆＃34;：＆＃34; vehicle_dev＆＃ 34;，＆＃34; _id＆＃34;：＆＃34; 2324＆＃34;＆＃34; _score＆＃34;：1.0，＆＃34; _source＆＃34; {＆＃34; makeId＆＃34;：5，＆＃34; makeName＆＃34;：＆＃34;雪佛兰＆＃34;＆＃34; yearId＆＃34;：2012}}

（预期）

但是当下一行执行时 -

List<Hit<Map, Void>> hits = result.getHits(Map.class);

响应： -

{makeId = 2.0，makeName = BUICK，yearId = 2012.0，es_metadata_id = 836}

意外的

值从2变为Double i..e 2.0。

Answer 1

@shubam

使用索引字段创建自己的模型（POJO）类并提供适当的类型

实施例

public IndexModel
{
private integer makeId;
private String makeName;
private integer yearId;

//Generate the setter and getters

然后使用此类

List<IndexModel> IndexModelList = result.getSourceAsObjectList(IndexModel.class);
                for( IndexModel indexModel: IndexModelList ){
                    indexModel.getyearId();

这将为您提供定义类型POJO

的结果

使用JestClient从elasticsearch

1 个答案: