一、原索引 PUT my_index { "mappings": { "_doc": { "properties": { "create_date": { "type": "date", "format": "yyyy-MM-dd ||yyyy/MM/dd" } } } } } 二、创建新索引 PUT my_index2 { "mappings": { "_doc": { "properties": { "create_date": { "type": "text" } } } } } 三、同步数据 POST _reindex { "source": { "index": "my_index" }, "dest": { "index": "my_index2" } } 四、删除原索引 DELETE my_index 五、设置别名 POST /_aliases { "actions": [ {"add": {"index": "my_index2", "alias": "my_index"}} ] }