MongoDB是一个基于分布式文件存储的数据库，下面我将就MongoDB的导入与导出给大家作出简要叙述，感兴趣的朋友可以了解一下。
一.导入与导出可以操作本地的mongodb也可以是远程的mongodb,通用选项:
-h host 主机--port port 端口-u username 用户名-p password 密码
如果mongodb没有账户密码并且是从本地导可以忽略上面四个参数
二.导出:
使用mongodb/bin/mongoexport文件:
cd /usr/local/mongodb./bin/mongoexport -d shop -c order -f name,content -q '{_id:{$lte:100}}' -o order.json-d 库名-c 表名-f field1,field2...要导出的字段-q 查询条件-o 导出的文件名 默认导出的数据格式为json格式,如果为了便于和传统数据库交换数据想导出csv格式需要指定文件类型–csv,上面的导出命令可以修改为:
./bin/mongoexport -d shop -c order -f name,content -q '{_id:{$lte:100}}' --csv -o order.csv三.导入:
./bin/mongoimport -d shop -c good --type json --file ./order.json-d 导入的数据库-c 导入的表(不存在自动创建)--type csv | json(默认json)--file 文件路径
注意:当导入的文件格式为csv时,需要增加一个–headerline,使用第一行作为字段名称:
./bin/mongoimport -d shop -c good --type csv --headerline --file ./order.csv
四.二进制导出
mongodump 导出二进制bson结构的数据及json结构的索引信息
./bin/mongodump -d shop -c order -d 库名-c 表名(不指定表默认导出全部表)-q 查询表达式-o 文件路径名(默认导出到mongodb/dump目录下)
导出之后在mongodb/dump/databaseName/目录下有一个.bson文件和一个.json文件
[root@sx45a8 mongodb]# cd dump[root@sx45a8 dump]# lsshop[root@sx45a8 dump]# cd shop[root@sx45a8 shop]# lsorder.bson order.metadata.json
五.二进制导入
./bin/mongorestore -d test --dir dump/shop/-d 导入的库名--dir 文件目录
二进制备份不仅可以备份数据还可以备份索引,而且备份比较小
相关教程：MongoDB视频教程
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