mongodb 数据库连接
1、 .创建数据库文件的存放位置，比如E:/data/db。启动mongodb服务之前需要必须创建数据库文件的存放文件夹，否则命令不会自动创建，而且不能启动成功。默认文件夹路径为c:/ data/db.使用系统 默认文件夹路径时，启动服务无需加--dbpath 参数说明，但文件夹
1、.创建数据库文件的存放位置，比如E:/data/db。启动mongodb服务之前需要必须创建数据库文件的存放文件夹，否则命令不会自动创建，而且不能启动成功。默认文件夹路径为c:/data/db.使用系统默认文件夹路径时，启动服务无需加--dbpath 参数说明，但文件夹还要手工创建。
2、打开cmd命令行，进入E:\Program Files\mongdb\bin目录，输入如下的命令启动mongodb服务：
E:/Program
Files/mongdb/bin>mongod.exe --dbpath E:/data/db
截图如下：
3、再打开一个cmd输入：E:/Program
Files/mongdb/bin>mongo，或者双击mongo.exe，即可进行mongodb数据库的命令操作了,测试下
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