使用AggregationBuilders

1.定义
TermsAggregationBuilder  tab = AggregationBuilders.terms(ProductInfoEnum.BRANDCODE.getName())
                                                    .field(ProductInfoEnum.BRANDCODE.getName())
                                                    .order(Terms.Order.aggregation("price_count", false));

2.使用
.addAggregation(tab)

出现：
{ "error" : "JsonGenerationException[Can not write a field name, expecting a value]"}