MongoDB导入(mongoimport)-导出(mongoexport)工具使用

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.