1、导出工具-mongoexport
Mongodb中的mongoexport工具可以把一个collection导出为JSON格式或者CSV格式文件。
(1)、导出为JSON文件
/opt/mongodb/bin/mongoexport -h 127.0.0.1 -u user -p password --port 27017 -d dev_test_db -c dev_test_history_location -q '{"handle" : "30487"}' -o history_location_30487.dat
(2)、导出为CSV文件
/opt/mongodb/bin/mongoexport -u user -p password --port 27017 -d dev_test_db -c dev_test_location --csv -q '{"handle" : "30439"}' -o dev_test_location_30439.csv --field type,handle,create_time
具体参数说明如下：
Options:
--help produce help message
-v [ --verbose ] be more verbose (include multiple times
for more verbosity e.g. -vvvvv)
--quiet silence all non error diagnostic
messages
--version print the program's version and exit
-h [ --host ] arg mongo host to connect to ( <set
name>/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
--gssapiServiceName arg (=mongodb) Service name to use when authenticating
using GSSAPI/Kerberos
--gssapiHostName arg Remote host name to use for purpose of
GSSAPI/Kerberos authentication
--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 directory
(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)
-f [ --fields ] arg comma separated list of field names
e.g. -f name,age
--fieldFile arg file with field names - 1 per line
-q [ --query ] arg query filter, as a JSON string, e.g.,
'{x:{$gt:1}}'
--csv export to csv instead of json
-o [ --out ] arg output file; if not specified, stdout
is used
--jsonArray output to a json array rather than one
object per line
-k [ --slaveOk ] arg (=1) use secondaries for export if
available, default true
--forceTableScan force a table scan (do not use
$snapshot)
--skip arg (=0) documents to skip, default 0
--limit arg (=0) limit the numbers of documents
returned, default all
--sort arg sort order, as a JSON string, e.g.,
'{x:1}'
2、导入工具-mongoimport
(1)、JSON格式文件导入
/opt/mongodb/bin/mongoimport -h 127.0.0.1 -u user -p password --port 27017 -d dev_test_db -c dev_test_history_location history_location_30487.dat
(2)、CSV格式文件导入
/opt/mongodb/bin/mongoimport -h 127.0.0.1 -u user -p password --port 27017 -d dev_test_db -c dev_test_history_location --type csv --headline --file history_location_30487.csv
参数说明：
-type: 指明要导入的文件格式
-headerline: 指明第一行是列名，不需要导入
-file： 指明要导入的文件
Options:
--help produce help message
-v [ --verbose ] be more verbose (include multiple times
for more verbosity e.g. -vvvvv)
--quiet silence all non error diagnostic
messages
--version print the program's version and exit
-h [ --host ] arg mongo host to connect to ( <set
name>/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
--gssapiServiceName arg (=mongodb) Service name to use when authenticating
using GSSAPI/Kerberos
--gssapiHostName arg Remote host name to use for purpose of
GSSAPI/Kerberos authentication
--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 directory
(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)
-f [ --fields ] arg comma separated list of field names
e.g. -f name,age
--fieldFile arg file with field names - 1 per line
--ignoreBlanks if given, empty fields in csv and tsv
will be ignored
--type arg type of file to import. default: json
(json,csv,tsv)
--file arg file to import from; if not specified
stdin is used
--drop drop collection first
--headerline first line in input file is a header
(CSV and TSV only)
--upsert insert or update objects that already
exist
--upsertFields arg comma-separated fields for the query
part of the upsert. You should make
sure this is indexed
--stopOnError stop importing at first error rather
than continuing
--jsonArray load a json array, not one item per
line. Currently limited to 16MB.