springboot整合MongoDB时碰到的问题
1.账号总是不对，导致查不出数据，报错Auth…权鉴错误
这次，我也是第一次接触MongoDB，非常的生疏
springboot整合MongoDB，要在properties文件中配置账号
mongodb基本语法：
use DATABASE_NAME; --创建数据库
show dbs; --查看我们所有的库，注意，我们刚创建的库，如果没有数据，是不会被显示的
show users; --查看当前库所有拥有的账号
db.createCollection(name, options) --在当前数据库中创建集合
show tables --查看当前库中有哪些集合
--在当前数据库中创建用户并设置密码及权限
db.createUser(
... {
... user : "aaa",
... pwd : "123456",
... roles: [ { role : "readWrite", db : "springboot" }]
... }
... )
通过上面的基础铺垫：
1.首先我们要登录MongoDB数据库
用管理员权限运行cmd
进入我们安装的MongoDB的bin目录下执行命令
mongo
即可登录MongoDB数据库
2.创建数据库
use springboot;
3.创建数据库对应的账号
创建一个springboot账号，对springboot数据库拥有读写权限
db.createUser(
... {
... user : "springboot",
... pwd : "123456",
... roles: [ { role : "readWrite", db : "springboot" }]
... }
... )
4,在springboot库中创建集合user
db.createCollection("user"); --创建集合user
show tables; --查看当前库中所有的集合
--- 并给集合user添加一条数据
db.user.insert({
"user_name":"pzj",
"note":"用户pzj",
"roles":[{
"role_name": "vip_user",
"note": "会员"
}]
})
到此，MongoDB的数据库初始化完成。
2.springboot工程代码中的配置
主要说下properties中的配置，pom里面引入的包我就不说了
spring.data.mongodb.host=127.0.0.1
spring.data.mongodb.username=springboot
spring.data.mongodb.password=123456
spring.data.mongodb.database=springboot
spring.data.mongodb.port=27017
logging.level.org.springframework.data.mongodb.core=DEBUG
3.查询时遇见的错误
No converter found capable of converting from org.bson.types.ObjectId to type Long异常
这个问题很好解决
我们在创建实体类对应数据库中的集合user时，把id设置成了Long型，导致的报错
我们只要把id类型改成String即可。
在MongoDb里要求每个文档都需要有_id 字段，java类中有如下情况会被映射为_id字段
如果1个字段加上了 @Id (org.springframework.data.annotation.Id)注解，那么将bean保存到数据库时就会把该字段映射为文档中的_id字段
如果java对象中没有 @Id 注解，名字为id 的字段将会被映射为文档中的_id字段
所以，也可以看出，我们的MongoDB数据，是不需要我们人为的添加主键id字段的
这个和以往的mysq等关系型数据库有所不同
它会自动给我们生成一个_id字段，作为集合的主键，标识一条数据
参考：https://blog.csdn.net/qq_34332010/article/details/78160075
我的操作记录：
Microsoft Windows [版本 10.0.17134.81]
(c) 2018 Microsoft Corporation。保留所有权利。
C:\WINDOWS\system32>mongo -port 27017 -u "admin" -p "123456" --authenticationDatabas
Error parsing command line: unrecognised option '--authenticationDatabas'
try 'mongo --help' for more information
C:\WINDOWS\system32>d:
D:\>cd MongoDB
D:\MongoDB>cd Server
D:\MongoDB\Server>cd 4.2
D:\MongoDB\Server\4.2>cd bin
D:\MongoDB\Server\4.2\bin>mongo -port 27017 -u "admin" -p "123456" --authenticationDatabas
Error parsing command line: unrecognised option '--authenticationDatabas'
try 'mongo --help' for more information
D:\MongoDB\Server\4.2\bin>mongo -port 27017 -u "admin" -p "123456"
MongoDB shell version v4.2.6
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("92832542-8eb8-4df5-942b-671ae8e574f5") }
MongoDB server version: 4.2.6
Server has startup warnings:
2020-04-24T09:38:15.970+0800 I CONTROL [initandlisten]
2020-04-24T09:38:15.970+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2020-04-24T09:38:15.970+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2020-04-24T09:38:15.970+0800 I CONTROL [initandlisten]
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> use admin
switched to db admin
> show users
{
"_id" : "admin.admin",
"userId" : UUID("ee717096-e66e-4554-95a5-29aafd999c86"),
"user" : "admin",
"db" : "admin",
"roles" : [
{
"role" : "userAdminAnyDatabase",
"db" : "admin"
}
],
"mechanisms" : [
"SCRAM-SHA-1",
"SCRAM-SHA-256"
]
}
> exit
bye
D:\MongoDB\Server\4.2\bin>mongo
MongoDB shell version v4.2.6
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("37edcce7-3eea-430a-9dca-7bf84fa70e88") }
MongoDB server version: 4.2.6
Server has startup warnings:
2020-04-24T09:38:15.970+0800 I CONTROL [initandlisten]
2020-04-24T09:38:15.970+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2020-04-24T09:38:15.970+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2020-04-24T09:38:15.970+0800 I CONTROL [initandlisten]
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> use admin
switched to db admin
>
> db.auth("admin","123456")
1
> show users;
{
"_id" : "admin.admin",
"userId" : UUID("ee717096-e66e-4554-95a5-29aafd999c86"),
"user" : "admin",
"db" : "admin",
"roles" : [
{
"role" : "userAdminAnyDatabase",
"db" : "admin"
}
],
"mechanisms" : [
"SCRAM-SHA-1",
"SCRAM-SHA-256"
]
}
> exit
bye
D:\MongoDB\Server\4.2\bin>use admin
'use' 不是内部或外部命令，也不是可运行的程序
或批处理文件。
D:\MongoDB\Server\4.2\bin>mongo
MongoDB shell version v4.2.6
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("25bd7adc-50a0-455c-af5d-48ad740ff1a4") }
MongoDB server version: 4.2.6
Server has startup warnings:
2020-04-24T09:38:15.970+0800 I CONTROL [initandlisten]
2020-04-24T09:38:15.970+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2020-04-24T09:38:15.970+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2020-04-24T09:38:15.970+0800 I CONTROL [initandlisten]
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> use admin
switched to db admin
> db.auth("root","123456")
Error: Authentication failed.
0
> exit
bye
D:\MongoDB\Server\4.2\bin>mongod --shutdown --dbpath=D:\MongodbData\db
Error parsing command line: unrecognised option '--shutdown'
try 'mongod --help' for more information
D:\MongoDB\Server\4.2\bin>mongod --help
Options:
--networkMessageCompressors arg (=snappy,zstd,zlib)
Comma-separated list of compressors to
use for network messages
General options:
-h [ --help ] Show this usage information
--version Show version information
-f [ --config ] arg Configuration file specifying
additional options
--configExpand arg Process expansion directives in config
file (none, exec, rest)
--ipv6 Enable IPv6 support (disabled by
default)
--listenBacklog arg (=2147483647) Set socket listen backlog size
--maxConns arg (=1000000) Max number of simultaneous connections
--pidfilepath arg Full path to pidfile (if not set, no
pidfile is created)
--timeZoneInfo arg Full path to time zone info directory,
e.g. /usr/share/zoneinfo
-v [ --verbose ] [=arg(=v)] Be more verbose (include multiple times
for more verbosity e.g. -vvvvv)
--quiet Quieter output
--port arg Specify port number - 27017 by default
--logpath arg Log file to send write to instead of
stdout - has to be a file, not
directory
--logappend Append to logpath instead of
over-writing
--logRotate arg Set the log rotation behavior
(rename|reopen)
--timeStampFormat arg Desired format for timestamps in log
messages. One of ctime, iso8601-utc or
iso8601-local
--setParameter arg Set a configurable parameter
--bind_ip arg Comma separated list of ip addresses to
listen on - localhost by default
--bind_ip_all Bind to all ip addresses
--noauth Run without security
--transitionToAuth For rolling access control upgrade.
Attempt to authenticate over outgoing
connections and proceed regardless of
success. Accept incoming connections
with or without authentication.
--slowms arg (=100) Value of slow for profile and console
log
--slowOpSampleRate arg (=1) Fraction of slow ops to include in the
profile and console log
--auth Run with security
--clusterIpSourceWhitelist arg Network CIDR specification of permitted
origin for `__system` access
--profile arg 0=off 1=slow, 2=all
--cpu Periodically show cpu and iowait
utilization
--sysinfo Print some diagnostic system
information
--noscripting Disable scripting engine
--notablescan Do not allow table scans
--keyFile arg Private key for cluster authentication
--clusterAuthMode arg Authentication mode used for cluster
authentication. Alternatives are
(keyFile|sendKeyFile|sendX509|x509)
Replication options:
--oplogSize arg Size to use (in MB) for replication op
log. default is 5% of disk space (i.e.
large is good)
Replica set options:
--replSet arg arg is [/]
--enableMajorityReadConcern [=arg(=1)] (=1)
Enables majority readConcern
Sharding options:
--configsvr Declare this is a config db of a
cluster; default port 27019; default
dir /data/configdb
--shardsvr Declare this is a shard db of a
cluster; default port 27018
Storage options:
--storageEngine arg What storage engine to use - defaults
to wiredTiger if no data files present
--dbpath arg Directory for datafiles - defaults to
\data\db\ which is D:\data\db\ based on
the current working drive
--directoryperdb Each database will be stored in a
separate directory
--syncdelay arg (=60) Seconds between disk syncs (0=never,
but not recommended)
--journalCommitInterval arg (=100) how often to group/batch commit (ms)
--noIndexBuildRetry Do not retry any index builds that were
interrupted by shutdown
--upgrade Upgrade db if needed
--repair Run repair on all dbs
--journal Enable journaling
--nojournal Disable journaling (journaling is on by
default for 64 bit)
Free Monitoring Options:
--enableFreeMonitoring arg Enable Cloud Free Monitoring
(on|runtime|off)
--freeMonitoringTag arg Cloud Free Monitoring Tags
WiredTiger options:
--wiredTigerCacheSizeGB arg Maximum amount of memory to allocate
for cache; Defaults to 1/2 of physical
RAM
--wiredTigerJournalCompressor arg (=snappy)
Use a compressor for log records
[none|snappy|zlib|zstd]
--wiredTigerDirectoryForIndexes Put indexes and data in different
directories
--wiredTigerMaxCacheOverflowFileSizeGB arg (=0)
Maximum amount of disk space to use for
cache overflow; Defaults to 0
(unbounded)
--wiredTigerCollectionBlockCompressor arg (=snappy)
Block compression algorithm for
collection data [none|snappy|zlib|zstd]
--wiredTigerIndexPrefixCompression arg (=1)
Use prefix compression on row-store
leaf pages
TLS Options:
--tlsOnNormalPorts Use TLS on configured ports
--tlsMode arg Set the TLS operation mode
(disabled|allowTLS|preferTLS|requireTLS
)
--tlsCertificateKeyFile arg Certificate and key file for TLS
--tlsCertificateKeyFilePassword arg Password to unlock key in the TLS
certificate key file
--tlsClusterFile arg Key file for internal TLS
authentication
--tlsClusterPassword arg Internal authentication key file
password
--tlsCAFile arg Certificate Authority file for TLS
--tlsClusterCAFile arg CA used for verifying remotes during
inbound connections
--tlsCRLFile arg Certificate Revocation List file for
TLS
--tlsDisabledProtocols arg Comma separated list of TLS protocols
to disable [TLS1_0,TLS1_1,TLS1_2]
--tlsAllowConnectionsWithoutCertificates
Allow client to connect without
presenting a certificate
--tlsAllowInvalidHostnames Allow server certificates to provide
non-matching hostnames
--tlsAllowInvalidCertificates Allow connections to servers with
invalid certificates
--tlsFIPSMode Activate FIPS 140-2 mode at startup
--tlsCertificateSelector arg TLS Certificate in system store
--tlsClusterCertificateSelector arg SSL/TLS Certificate in system store for
internal TLS authentication
--tlsLogVersions arg Comma separated list of TLS protocols
to log on connect [TLS1_0,TLS1_1,TLS1_2
]
Windows Service Control Manager options:
--install Install Windows service
--remove Remove Windows service
--reinstall Reinstall Windows service (equivalent
to --remove followed by --install)
--serviceName arg Windows service name
--serviceDisplayName arg Windows service display name
--serviceDescription arg Windows service description
--serviceUser arg Account for service execution
--servicePassword arg Password used to authenticate
serviceUser
D:\MongoDB\Server\4.2\bin>net stop MongoDB
MongoDB Server (MongoDB) 服务已成功停止。
D:\MongoDB\Server\4.2\bin>net start MongoDB
MongoDB Server (MongoDB) 服务正在启动 ..
MongoDB Server (MongoDB) 服务已经启动成功。
D:\MongoDB\Server\4.2\bin>mongo
MongoDB shell version v4.2.6
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("c14b3b14-14e6-4f45-85d1-0a209ac99ac0") }
MongoDB server version: 4.2.6
Server has startup warnings:
2020-04-24T17:35:16.580+0800 I CONTROL [initandlisten]
2020-04-24T17:35:16.580+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2020-04-24T17:35:16.580+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2020-04-24T17:35:16.580+0800 I CONTROL [initandlisten]
---
Enable MongoDB' s free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
springboot 0.000GB
> use springboot
switched to db springboot
> show users
> use admin
switched to db admin
> show users
{
"_id" : "admin.admin",
"userId" : UUID("ee717096-e66e-4554-95a5-29aafd999c86"),
"user" : "admin",
"db" : "admin",
"roles" : [
{
"role" : "userAdminAnyDatabase",
"db" : "admin"
}
],
"mechanisms" : [
"SCRAM-SHA-1",
"SCRAM-SHA-256"
]
}
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
springboot 0.000GB
> use admin
switched to db admin
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
springboot 0.000GB
> use springboot
switched to db springboot
> show users
> db.user.find()
{ "_id" : ObjectId("5ea2a7feaf59424af80005c6"), "id" : 1, "user_name" : "pzj", "note" : "用户pzj", "role" : { "_id" : "5ea2a639af59424af80005c5", "id" : 3, "role_name" : "vip_user", "note" : "会员" } }
{ "_id" : ObjectId("5ea2a87daf59424af80005c7"), "id" : 2, "user_name" : "pzj1", "note" : "用户pzj1", "role" : { "_id" : "5ea2a639af59424af80005c5", "id" : 3, "role_name" : "vip_user", "note" : "会员" } }
{ "_id" : ObjectId("5ea2a898af59424af80005c8"), "id" : 3, "user_name" : "pzj3", "note" : "用户pzj3", "role" : { "_id" : "5ea2a639af59424af80005c5", "id" : 3, "role_name" : "vip_user", "note" : "会员" } }
{ "_id" : ObjectId("5ea2a89eaf59424af80005c9"), "id" : 4, "user_name" : "pzj4", "note" : "用户pzj4", "role" : { "_id" : "5ea2a639af59424af80005c5", "id" : 3, "role_name" : "vip_user", "note" : "会员" } }
> db.createUser(
... ... {
... ... user : "springboot",
... ... pwd : "123456",
... ... roles: [ { role : "readWrite", db : "springboot" }]
... ... }
... ... )
Successfully added user: {
"user" : "springboot",
"roles" : [
{
"role" : "readWrite",
"db" : "springboot"
}
]
}
> use admin
switched to db admin
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
springboot 0.000GB
> use springboot
switched to db springboot
> show users
{
"_id" : "springboot.springboot",
"userId" : UUID("da61542e-0c24-49b1-aa36-378580a2627a"),
"user" : "springboot",
"db" : "springboot",
"roles" : [
{
"role" : "readWrite",
"db" : "springboot"
}
],
"mechanisms" : [
"SCRAM-SHA-1",
"SCRAM-SHA-256"
]
}
> show user
2020-04-24T21:16:27.933+0800 E QUERY [js] uncaught exception: Error: don't know how to show [user] :
shellHelper.show@src/mongo/shell/utils.js:1139:11
shellHelper@src/mongo/shell/utils.js:790:15
@(shellhelp2):1:1
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
springboot 0.000GB
> use springboot
switched to db springboot
> show users
{
"_id" : "springboot.springboot",
"userId" : UUID("da61542e-0c24-49b1-aa36-378580a2627a"),
"user" : "springboot",
"db" : "springboot",
"roles" : [
{
"role" : "readWrite",
"db" : "springboot"
}
],
"mechanisms" : [
"SCRAM-SHA-1",
"SCRAM-SHA-256"
]
}
> springboot.user
2020-04-24T21:16:57.022+0800 E QUERY [js] uncaught exception: ReferenceError: springboot is not defined :
@(shell):1:1
> db.user.findOne({id:1})
{
"_id" : ObjectId("5ea2a7feaf59424af80005c6"),
"id" : 1,
"user_name" : "pzj",
"note" : "用户pzj",
"role" : {
"_id" : "5ea2a639af59424af80005c5",
"id" : 3,
"role_name" : "vip_user",
"note" : "会员"
}
}
> show dbs;
admin 0.000GB
config 0.000GB
local 0.000GB
springboot 0.000GB
> use xx
switched to db xx
> show dbs;
admin 0.000GB
config 0.000GB
local 0.000GB
springboot 0.000GB
>