ElasticsearchStatusException[Elasticsearch exception [type=search_phase_execution_exception, reason=all shards failed]
]; nested: ElasticsearchException[Elasticsearch exception [type=illegal_argument_exception, reason=Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [source] in order to load field data by uninverting the inverted index. Note that this can use significant memory.]]; nested: ElasticsearchException[Elasticsearch exception [type=illegal_argument_exception, reason=Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [source] in order to load field data by uninverting the inverted index. Note that this can use significant memory.]];
	at org.elasticsearch.rest.BytesRestResponse.errorFromXContent(BytesRestResponse.java:177)
	at org.elasticsearch.client.RestHighLevelClient.parseEntity(RestHighLevelClient.java:1888)
	at org.elasticsearch.client.RestHighLevelClient.parseResponseException(RestHighLevelClient.java:1865)
	at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1622)
	at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1579)
	at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:1549)
	at org.elasticsearch.client.RestHighLevelClient.search(RestHighLevelClient.java:1065)

当使用到term 查询的时候，由于是精准匹配，所以查询的关键字在es上的类型，必须是keyword而不能是text，比如你的搜索条件是 ”name”:”蔡虚坤”,那么该name 字段的es类型得是keyword，而不能是text
在es中，只有keyword类型的字符串可以使用AggregationBuilders.terms("aggs-class")来分组聚合，想要分组查询，指定根据分组字段的keyword属性就可以了