1.导出数据
mongoexport -d my_mongodb -c choice -o choice.dat
参数说明:
-d 指明使用的库, 本例中为” my_mongodb”
-c 指明要导出的表, 本例中为”choice ”
-o 指明要导出的文件名, 本例中为”choice .dat”
-h 服务器地址
2.导入数据
mongoimport -d my_mongodb -c choice choice .dat
参数说明:
-d 指明使用的库, 本例中为” my_mongodb”
-c 指明要导入的表, 本例中为”choice ”
3.整库备份：
mongodump -h dbhost -d dbname -o dbdirectory
-h：MongDB所在服务器地址，例如：127.0.0.1，也可以指定端口号：127.0.0.1:27017
-d：需要备份的
数据库实例，例如：test
-o：备份的数据存放位置，例如：c:\data\dump，当然该目录需要提前建立，在备份完成后，
系统自动在dump目录下建立一个test目录，这个目录里面存放该数据库实例的备份数据。
查看详细帮助信息如下
D:\tool\mongodb\bin>mongodump --help
Export MongoDB data to BSON files.
options:
--help produce help message
-v [ --verbose ] be more verbose (include multiple times
for more verbosity e.g. -vvvvv)
--version print the program's version and exit
-h [ --host ] arg mongo host to connect to ( /s1,s2 for sets)
--port arg server port. Can also use --host
hostname:port
--ipv6 enable IPv6 support (disabled by
default)
-u [ --username ] arg username
-p [ --password ] arg password
--authenticationDatabase arg user source (defaults to dbname)
--authenticationMechanism arg (=MONGODB-CR)
authentication mechanism
--dbpath arg directly access mongod database files
in the given path, instead of
connecting to a mongod server - needs
to lock the data directory, so cannot
be used if a mongod is currently
accessing the same path
--directoryperdb each db is in a separate directly
(relevant only if dbpath specified)
--journal enable journaling (relevant only if
dbpath specified)
-d [ --db ] arg database to use
-c [ --collection ] arg collection to use (some commands)
-o [ --out ] arg (=dump) output directory or "-" for stdout
-q [ --query ] arg json query
--oplog Use oplog for point-in-time
snapshotting
--repair try to recover a crashed database
--forceTableScan force a table scan (do not use
$snapshot)
4.整库恢复：
mongorestore -h dbhost -d dbname –directoryperdb dbdirectory
-h：MongoDB所在服务器地址
-d：需要恢复的数据库实例，例如：test，这个名称也可以和备份时候的不一样，比如test2
–directoryperdb：备份数据所在位置，例如：c:\data\dump\test，这里为什么要多加一个test，而不是备份时候的dump
–drop：恢复的时候，先删除当前数据，然后恢复备份的数据。就是说，恢复后，备份后添加修改的数据都会被删除
查看详细帮助信息如下
D:\tool\mongodb\bin>mongorestore --help
Import BSON files into MongoDB.
usage: mongorestore [options] [directory or filename to restore from]
options:
--help produce help message
-v [ --verbose ] be more verbose (include multiple times
for more verbosity e.g. -vvvvv)
--version print the program's version and exit
-h [ --host ] arg mongo host to connect to ( /s1,s2 for sets)
--port arg server port. Can also use --host
hostname:port
--ipv6 enable IPv6 support (disabled by
default)
-u [ --username ] arg username
-p [ --password ] arg password
--authenticationDatabase arg user source (defaults to dbname)
--authenticationMechanism arg (=MONGODB-CR)
authentication mechanism
--dbpath arg directly access mongod database files
in the given path, instead of
connecting to a mongod server - needs
to lock the data directory, so cannot
be used if a mongod is currently
accessing the same path
--directoryperdb each db is in a separate directly
(relevant only if dbpath specified)
--journal enable journaling (relevant only if
dbpath specified)
-d [ --db ] arg database to use
-c [ --collection ] arg collection to use (some commands)
--objcheck validate