# How to use the high level rest API to build an Aggregation from JSON
**URL:** https://discuss.elastic.co/t/how-to-use-the-high-level-rest-api-to-build-an-aggregation-from-json/171981
**Category:** Elasticsearch
**Created:** [March 12, 2019, 2:43pm UTC](https://discuss.elastic.co/t/how-to-use-the-high-level-rest-api-to-build-an-aggregation-from-json/171981 "2019-03-12T14:43:13Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Bengagi\_Foued](https://discuss.elastic.co/u/Bengagi_Foued)
#### Post date: [March 12, 2019, 2:43pm UTC](https://discuss.elastic.co/t/how-to-use-the-high-level-rest-api-to-build-an-aggregation-from-json/171981/1 "2019-03-12T14:43:14Z")
need help ! How to make the "set aggregation" from JSON string !
I have an application where i build a json string with aggregations in frontend (angular) then i send this json to backend (Spring boot) to perform the request
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [March 12, 2019, 3:17pm UTC](https://discuss.elastic.co/t/how-to-use-the-high-level-rest-api-to-build-an-aggregation-from-json/171981/2 "2019-03-12T15:17:18Z")
May be read [How to use the ElasticSearch Java API to build an Aggregation from JSON](https://discuss.elastic.co/t/how-to-use-the-elasticsearch-java-api-to-build-an-aggregation-from-json/70773/6?u=dadoonet)
---
### Author:  [@Bengagi\_Foued](https://discuss.elastic.co/u/Bengagi_Foued)
#### Post date: [March 12, 2019, 3:55pm UTC](https://discuss.elastic.co/t/how-to-use-the-high-level-rest-api-to-build-an-aggregation-from-json/171981/3 "2019-03-12T15:55:04Z")
is there a solution using elaticsearch high level rest api version 6.5 of elasticsearch ?
---
### Author:  [@Bengagi\_Foued](https://discuss.elastic.co/u/Bengagi_Foued)
#### Post date: [March 12, 2019, 4:26pm UTC](https://discuss.elastic.co/t/how-to-use-the-high-level-rest-api-to-build-an-aggregation-from-json/171981/4 "2019-03-12T16:26:04Z")
i found the solution , using JestClientFactory .
```
JestClientFactory factory = new JestClientFactory();
HttpClientConfig httpClientConfig = new HttpClientConfig
.Builder("http://localhost:9200")
.build();
factory.setHttpClientConfig(httpClientConfig);
JestClient client = factory.getObject();
Search.Builder searchBuilder = new Search.Builder(body)
.addIndex(index);
SearchResult response = client.execute(searchBuilder.build());
System.out.println(response.getJsonString());
client.shutdownClient();
return response.getJsonString();
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 9, 2019, 4:26pm UTC](https://discuss.elastic.co/t/how-to-use-the-high-level-rest-api-to-build-an-aggregation-from-json/171981/5 "2019-04-09T16:26:05Z")
This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.