新增字段
PUT 索引名称/_mapping/doc
PUT activity_v1/_mapping/doc { "properties": { "effDate_fbda": { "type": "text" }, "expDate_fbda": { "type": "text" } }}
对新增字段赋值
POST 索引名称/_update_by_query
POST activity_v1/_update_by_query{ "script": { "source": "ctx._source.expDate_fbda=ctx._source.expDate" }}