报错一

org.elasticsearch.ElasticsearchStatusException: Elasticsearch exception [type=search_phase_execution_exception, reason=all shards failed]

	Suppressed: org.elasticsearch.client.ResponseException: method [POST], host [http://localhost:9200], URI [/wzx-test/_search?pre_filter_shard_size=128&typed_keys=true&max_concurrent_shard_requests=5&ignore_unavailable=false&expand_wildcards=open&allow_no_indices=true&ignore_throttled=true&search_type=query_then_fetch&batched_reduce_size=512&ccs_minimize_roundtrips=true], status line [HTTP/1.1 400 Bad Request]
Warnings: [Elasticsearch built-in security features are not enabled. Without authentication, your cluster could be accessible to anyone. See https://www.elastic.co/guide/en/elasticsearch/reference/7.17/security-minimal-setup.html to enable security., [ignore_throttled] parameter is deprecated because frozen indices have been deprecated. Consider cold or frozen tiers in place of frozen indices.]
{"error":{"root_cause":[{"type":"query_shard_exception","reason":"failed to create query: Cannot search on field [name] since it is not indexed.","index_uuid":"ERtTBqoxQziiFS50j6658Q","index":"wzx-test"}],"type":"search_phase_execution_exception","reason":"all shards failed","phase":"query","grouped":true,"failed_shards":[{"shard":0,"index":"wzx-test","node":"cCxDpWCeSqK2ll3x31-W_g","reason":{"type":"query_shard_exception","reason":"failed to create query: Cannot search on field [name] since it is not indexed.","index_uuid":"ERtTBqoxQziiFS50j6658Q","index":"wzx-test","caused_by":{"type":"illegal_argument_exception","reason":"Cannot search on field [name] since it is not indexed."}}}]},"status":400}at org.elasticsearch.client.RestClient.convertResponse(RestClient.java:283)at org.elasticsearch.client.RestClient.performRequest(RestClient.java:261)at org.elasticsearch.client.RestClient.performRequest(RestClient.java:235)at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1514)... 109 common frames omitted

报错原因：我在创建索引和字段的时候，name字段不是索引字段，当用精准查询的时候，就报错如上图所示

解决方案：将name字段设置成true，问题解决

PUT /wzx-test
{"mappings": {"properties": {"car_num": {"type": "keyword","index": false},"name": {"type": "keyword","index": true},"age": {"type": "keyword","index": false}}}
}