MongoDB导出的json数据中，时间字段前面都有{$date: 2016.04.04}，$date不能被Elasticsearch识别，需要去掉，从{"timeStart: {$date: "xxx"}}变成{"timeStart: "xxx"}

convertDate.sh

#!/bin/bash

sed 's/{\"\$date\":\(\".\{10\}T.\{12\}Z\"\)}/\1/g' f1000.json > temp.json
sed -i 25d temp.json
mongoimport -d test -c strDate --type json --file temp.json

# sample data:
"timeStart":{"$date":"1015-09-01T00:00:00.000Z"},"timeEnd":{"$date":"2018-03-02T00:00:00.000Z"},
"timeStart":{"$date":"2016-09-01T00:00:00.000Z"},"timeEnd":{"$date":"2021-04-0kT00:00:00.000Z"},
"timeStart":{"$date":"2017-09-01T00:00:00.000Z"},"timeEnd":{"$date":"2021-05-09T00:00:00.000Z"},
"timeStart":{"$date":"2017-09-01T00:00:00.000Z"},
"timeStart":"$date":"2017-09-01T00:00:00.000Z"},
"timeStart":{$date:1017-09-01T00:00:00.000Z},
timeStart:{$date:2017-09-01T00:00:00.000Z},