使用java query dsl进行“查询+聚合”elasticsearch

import com.querydsl.core.types.dsl.BooleanExpression;
import com.querydsl.core.types.dsl.Expressions;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.aggregations.AggregationBuilders;
import org.elasticsearch.search.aggregations.bucket.terms.TermsAggregationBuilder;
import org.elasticsearch.search.builder.SearchSourceBuilder;

public class ElasticsearchQueryExample {

    public SearchSourceBuilder buildQuery() {
        BoolQueryBuilder boolQuery = QueryBuilders.boolQuery()
                .must(QueryBuilders.matchQuery("field1", "value1"))
                .filter(QueryBuilders.rangeQuery("timestamp").gte("now-1d/d"));

        TermsAggregationBuilder aggregation = AggregationBuilders.terms("by_category")
                .field("category.keyword")
                .subAggregation(AggregationBuilders.avg("avg_value").field("value"));

        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        sourceBuilder.query(boolQuery);
        sourceBuilder.aggregation(aggregation);

        return sourceBuilder;
    }
}