elasticsearch嵌套:使用对象初始化器语法创建具有多个聚合的SearchRequest

SearchRequest searchRequest = new SearchRequest("index_name");
SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();

// 添加查询条件
sourceBuilder.query(QueryBuilders.matchAllQuery());

// 添加聚合
TermsAggregationBuilder aggregationBuilder = AggregationBuilders.terms("agg_name").field("field_name");
sourceBuilder.aggregation(aggregationBuilder);

// 添加更多的聚合
MaxAggregationBuilder maxAggregationBuilder = AggregationBuilders.max("max_agg").field("field_name");
sourceBuilder.aggregation(maxAggregationBuilder);

// 设置返回结果的大小
sourceBuilder.size(10);

searchRequest.source(sourceBuilder);