本来以前装过MySQL，但是密码忘了，在网上百度重置root密码方法，感觉很麻烦，就想着作死卸载重新装，然后就碰到了这个问题

然后一直卡在这个问题1，2个小时，在网上也百度了很多方法

结果还是一脸懵，真的是大部分方法都试过了，例如：自建的data文件夹；修改my.ini和my-default.ini配置文件等

发现还是没有用，后来还是在这里突然想起干嘛不看自己的日志，不就知道原因了吗

当时抱着试一试的心态

进入DOS界面，到MySQL文件夹下输入mysqld --console

C:\Windows\system32>cd C:\Program Files\MySQL\MySQL Server 5.7\bin

C:\Program Files\MySQL\MySQL Server 5.7\bin>mysqld --console

2018-09-11T11:27:22.996594Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is

deprecated. Please use --explicit_defaults_for_timestamp server option (see doc

umentation for more details).

2018-09-11T11:27:22.996594Z 0 [Note] --secure-file-priv is set to NULL. Operatio

ns related to importing and exporting data are disabled

2018-09-11T11:27:22.996594Z 0 [Note] mysqld (mysqld 5.7.17) starting as process

6940 ...

2018-09-11T11:27:23.001594Z 0 [Note] InnoDB: Mutexes and rw_locks use Windows in

terlocked functions

2018-09-11T11:27:23.002594Z 0 [Note] InnoDB: Uses event mutexes

2018-09-11T11:27:23.002594Z 0 [Note] InnoDB: _mm_lfence() and _mm_sfence() are u

sed for memory barrier

2018-09-11T11:27:23.002594Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3

2018-09-11T11:27:23.002594Z 0 [Note] InnoDB: Number of pools: 1

2018-09-11T11:27:23.003594Z 0 [Note] InnoDB: Not using CPU crc32 instructions

2018-09-11T11:27:23.005594Z 0 [Note] InnoDB: Initializing buffer pool, total siz

e = 128M, instances = 1, chunk size = 128M

2018-09-11T11:27:23.013595Z 0 [Note] InnoDB: Completed initialization of buffer

pool

2018-09-11T11:27:23.039596Z 0 [Note] InnoDB: Highest supported file format is Ba

rracuda.

2018-09-11T11:27:23.079598Z 0 [Note] InnoDB: Creating shared tablespace for temp

orary tables

2018-09-11T11:27:23.080598Z 0 [Note] InnoDB: Setting file '.\ibtmp1' size to 12

MB. Physically writing the file full; Please wait ...

2018-09-11T11:27:23.124601Z 0 [Note] InnoDB: File '.\ibtmp1' size is now 12 MB.

2018-09-11T11:27:23.126601Z 0 [Note] InnoDB: 96 redo rollback segment(s) found.

96 redo rollback segment(s) are active.

2018-09-11T11:27:23.126601Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are

active.

2018-09-11T11:27:23.128601Z 0 [Note] InnoDB: Waiting for purge to start

2018-09-11T11:27:23.178604Z 0 [Note] InnoDB: 5.7.17 started; log sequence number

2534665

2018-09-11T11:27:23.179604Z 0 [Note] InnoDB: Loading buffer pool(s) from C:\Prog

ram Files\MySQL\MySQL Server 5.7\data\ib_buffer_pool

2018-09-11T11:27:23.179604Z 0 [Note] Plugin 'FEDERATED' is disabled.

2018-09-11T11:27:23.189605Z 0 [Warning] Failed to set up SSL because of the foll

owing SSL library error: SSL context is not usable without certificate and priva

te key

2018-09-11T11:27:23.190605Z 0 [Note] Server hostname (bind-address): '*'; port:

3306

2018-09-11T11:27:23.191605Z 0 [Note] IPv6 is available.

2018-09-11T11:27:23.192605Z 0 [Note]   - '::' resolves to '::';

2018-09-11T11:27:23.192605Z 0 [Note] Server socket created on IP: '::'.

2018-09-11T11:27:23.193605Z 0 [ERROR] Can't start server: Bind on TCP/IP port: N

o such file or directory

2018-09-11T11:27:23.193605Z 0 [ERROR] Do you already have another mysqld server

running on port: 3306 ?

2018-09-11T11:27:23.194605Z 0 [ERROR] Aborting

2018-09-11T11:27:23.194605Z 0 [Note] Binlog end

2018-09-11T11:27:23.195605Z 0 [Note] Shutting down plugin 'ngram'

2018-09-11T11:27:23.195605Z 0 [Note] Shutting down plugin 'partition'

2018-09-11T11:27:23.195605Z 0 [Note] Shutting down plugin 'BLACKHOLE'

2018-09-11T11:27:23.196605Z 0 [Note] Shutting down plugin 'ARCHIVE'

2018-09-11T11:27:23.196605Z 0 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'

2018-09-11T11:27:23.197605Z 0 [Note] Shutting down plugin 'MRG_MYISAM'

2018-09-11T11:27:23.198605Z 0 [Note] Shutting down plugin 'MyISAM'

2018-09-11T11:27:23.198605Z 0 [Note] Shutting down plugin 'INNODB_SYS_VIRTUAL'

2018-09-11T11:27:23.198605Z 0 [Note] InnoDB: Buffer pool(s) load completed at 18

0911 19:27:23

2018-09-11T11:27:23.198605Z 0 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'

2018-09-11T11:27:23.199605Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACE

S'

2018-09-11T11:27:23.200605Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_CO

LS'

2018-09-11T11:27:23.200605Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'

2018-09-11T11:27:23.201605Z 0 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'

2018-09-11T11:27:23.201605Z 0 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'

2018-09-11T11:27:23.202605Z 0 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'

2018-09-11T11:27:23.202605Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS

'

2018-09-11T11:27:23.203605Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLES'

2018-09-11T11:27:23.203605Z 0 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE

'

2018-09-11T11:27:23.204605Z 0 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE

'

2018-09-11T11:27:23.204605Z 0 [Note] Shutting down plugin 'INNODB_FT_CONFIG'

2018-09-11T11:27:23.204605Z 0 [Note] Shutting down plugin 'INNODB_FT_BEING_DELET

ED'

2018-09-11T11:27:23.205606Z 0 [Note] Shutting down plugin 'INNODB_FT_DELETED'

2018-09-11T11:27:23.205606Z 0 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STO

PWORD'

2018-09-11T11:27:23.206606Z 0 [Note] Shutting down plugin 'INNODB_METRICS'

2018-09-11T11:27:23.207606Z 0 [Note] Shutting down plugin 'INNODB_TEMP_TABLE_INF

O'

2018-09-11T11:27:23.207606Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_ST

ATS'

2018-09-11T11:27:23.208606Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LR

U'

2018-09-11T11:27:23.208606Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'

2018-09-11T11:27:23.208606Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_

RESET'

2018-09-11T11:27:23.209606Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'

2018-09-11T11:27:23.209606Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'

2018-09-11T11:27:23.209606Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM'

2018-09-11T11:27:23.210606Z 0 [Note] Shutting down plugin 'INNODB_CMP_RESET'

2018-09-11T11:27:23.210606Z 0 [Note] Shutting down plugin 'INNODB_CMP'

2018-09-11T11:27:23.210606Z 0 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'

2018-09-11T11:27:23.211606Z 0 [Note] Shutting down plugin 'INNODB_LOCKS'

2018-09-11T11:27:23.211606Z 0 [Note] Shutting down plugin 'INNODB_TRX'

2018-09-11T11:27:23.212606Z 0 [Note] Shutting down plugin 'InnoDB'

2018-09-11T11:27:23.212606Z 0 [Note] InnoDB: FTS optimize thread exiting.

2018-09-11T11:27:23.213606Z 0 [Note] InnoDB: Starting shutdown...

2018-09-11T11:27:23.313612Z 0 [Note] InnoDB: Dumping buffer pool(s) to C:\Progra

m Files\MySQL\MySQL Server 5.7\data\ib_buffer_pool

2018-09-11T11:27:23.314612Z 0 [Note] InnoDB: Buffer pool(s) dump completed at 18

0911 19:27:23

2018-09-11T11:27:24.619686Z 0 [Note] InnoDB: Shutdown completed; log sequence nu

mber 2534684

2018-09-11T11:27:24.620686Z 0 [Note] InnoDB: Removed temporary tablespace data f

ile: "ibtmp1"

2018-09-11T11:27:24.621687Z 0 [Note] Shutting down plugin 'MEMORY'

2018-09-11T11:27:24.621687Z 0 [Note] Shutting down plugin 'CSV'

2018-09-11T11:27:24.623687Z 0 [Note] Shutting down plugin 'sha256_password'

2018-09-11T11:27:24.623687Z 0 [Note] Shutting down plugin 'mysql_native_password

'

2018-09-11T11:27:24.624687Z 0 [Note] Shutting down plugin 'binlog'

2018-09-11T11:27:24.625687Z 0 [Note] mysqld: Shutdown complete

看到错误，一下想起了自己做的死，简直泪流满面啊，

IP被另一个服务占用了，然后高兴坏了，小手一点，然后困扰了我一个多小时问题就解决了。

最后总结一下该问题的解决方法(包括我自己在网上查的，虽然我的不是这个原因)：

方法1：data文件夹是自己创建的，删除data文件夹，在DOS界面进入到MySQL的文件夹下输入这个命令：mysqld  --initialize ，重新初始化一个data文件。(大部分好像都是这个原因)

方法2：配置my.ini。下面这个好像有说到配置my.ini

方法3：就是看你的IP有没有被占用(也就是我遇到的问题)

方法4：自己在DOS界面在MySQL文件夹的bin目录中输入mysqld --console命令，查询错误日志，毕竟每个人遇到的错误原因都不一定相同，可以通过自己的日志找到自己真正错误的原因(推荐方法)

C:\Windows\system32>cd C:\Program Files\MySQL\MySQL Server 5.7\bin

C:\Program Files\MySQL\MySQL Server 5.7\bin>mysqld --console