深入分析Mongodb数据的导入导出

[root@localhost mongodb] # ./bin/mongoexport --help

Export MongoDB data to CSV, TSV or JSON 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 ( < 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

  --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     if dbpath specified, each db is in a separate 

               directory

  --journal         enable journaling

  -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 fields names - 1 per line

  -q [ --query ] arg    query filter, as a JSON string

  --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

[root@localhost mongodb] # ./bin/mongoimport --help

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 ( < 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

  --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    if dbpath specified, each db is in a separate 

              directory

  --journal        enable journaling

  -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 fields 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      CSV,TSV only - use first line as headers

  --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 4MB.