MongoDB配置问题

1.mongodb启动配置

参考：Windows下mongodb的启动

2.Invalid command: filesmongoDB

报错信息：

正确方法：

原因：路径之中有空格会当参数来处理，需要将整个路径加上引号

3.MongoDB连接认证失败

SpringBoot配置MongoDB地址时，如果不设置连接方式默认是MONGODB-CR,如果安装的时候设置的是SCRAM-SHA-1。

需要在配置mongodb地址的时候加上连接方式：
spring.data.mongodb.uri=mongodb://root(userName):root(password)@localhost(ip地址):27017(端口号)/gis(collections/数据库)?authSource=admin&authMechanism=SCRAM-SHA-1

4.Unauthorized: not authorized on test to execute command { dbstats: 1.0, scale: undefined, $db: "test" }

当前版本3.6.2
问题原因出在读写的权限上：stackoverflow上的解决方法

You should have started the mongod instance with access control, i.e., the --auth command line option, such as:

 $ mongod --auth

Let's start the mongo shell, and create an administrator in the admin database:

$ mongo
> use admin
> db.createUser(
  {
    user: "myUserAdmin",
    pwd: "abc123",
    roles: [ { role: "userAdminAnyDatabase", db: "admin" } ]
  }
)

Now if you run command "db.stats()", or "show users", you will get error "not authorized on admin to execute command..."

> db.stats()
{
        "ok" : 0,
        "errmsg" : "not authorized on admin to execute command { dbstats: 1.0, scale: undefined }",
        "code" : 13,
        "codeName" : "Unauthorized"
}

下面这两句最重要，如果是开始新建，则要从头开始看:
The reason is that you still have not granted role "read" or "readWrite" to user myUserAdmin. You can do it as below:

> db.auth("myUserAdmin", "abc123")
> db.grantRolesToUser("myUserAdmin", [ { role: "read", db: "admin" } ])

Now You can verify it (Command "show users" now works):

> show users
{
        "_id" : "admin.myUserAdmin",
        "user" : "myUserAdmin",
        "db" : "admin",
        "roles" : [
                {
                        "role" : "read",
                        "db" : "admin"
                },
                {
                        "role" : "userAdminAnyDatabase",
                        "db" : "admin"
                }
        ]
}

Now if you run "db.stats()", you'll also be OK:

> db.stats()
{
        "db" : "admin",
        "collections" : 2,
        "views" : 0,
        "objects" : 3,
        "avgObjSize" : 151,
        "dataSize" : 453,
        "storageSize" : 65536,
        "numExtents" : 0,
        "indexes" : 3,
        "indexSize" : 81920,
        "ok" : 1
}

This user and role mechanism can be applied to any other databases in MongoDB as well, in addition to the admin database.

参考：Unauthorized: not authorized on test to execute command { dbstats: 1.0, scale: undefined, $db: "test" } 错误的解决