mysql 5.7 非正常安装，无法启动 服务没有报告任何错误

以前，完整安装mysql5.7程序时，由于程序太大，可以将安装缓存目录中的安装文件（较小）复制出来后，留以后使用。

 mysql-5.7.-win32.msi
 2 mysql-5.7.17-winx64.msi   主程序
 mysql-connector-c++-1.1.-win32.msi
 mysql-connector-c++-1.1.-winx64.msi
 mysql-connector-c-6.1.-win32.msi
 mysql-connector-c-6.1.-winx64.msi
 mysql-connector-java-gpl-5.1..msi
 mysql-connector-net-6.9..msi
 mysql-connector-odbc-5.3.-win32.msi
 mysql-connector-odbc-5.3.-winx64.msi
 mysql-connector-python-2.1.-py2.-win32.msi
 mysql-connector-python-2.1.-py2.-winx64.msi
 mysql-connector-python-2.1.-py3.-win32.msi
 mysql-connector-python-2.1.-py3.-winx64.msi
 mysql-connector-python-2.1.-py3.-win32.msi
 mysql-connector-python-2.1.-py3.-winx64.msi
 mysql-documents-5.7..msi
 mysql-examples-5.7..msi
 mysql-for-excel-1.3..msi
 mysql-for-visualstudio-1.2..msi
 mysql-notifier-1.1..msi
 mysql-utilities-1.6.-win32.msi
 mysql-utilities-1.6.-winx64.msi
 mysql-workbench-community-6.3.-win32.msi
 mysql-workbench-community-6.3.8-winx64.msi  管理工具

安装了上述两个文件(只安装主程序即可)

安装后，发现mysql根本无法启动，系统服务中也找不到mysql服务，在cmd中执行命令遇到如下问题

mysql无法启动 服务没有报告任何错误 

解决办法

1 不能自己创建一个data文件夹。如果有，请删除

2 打开cmd命令工具：

在mysql的bin目录下执行mysqld --initialize-insecure （不设置root密码，建议使用）命令，第一次执行这个命令会等待的时间稍微长了一些，并且控制台没有任何返回结果。可以看到mysql的根目录下会多出一个data文件夹，里面一堆文件。

3  执行命令 mysqld -install  安装服务
4 执行命令net start mysql命令来启动Mysql服务

登录时需要用随机密码登录，然后通过以下命令修改密码

SET PASSWORD = PASSWORD('Abcd1234');

之后，就可以使用 mysql-workbench 管理数据库了

看红色的部分为正解

 Microsoft Windows [版本 10.0.]
 (c)  Microsoft Corporation。保留所有权利。

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

 C:\Program Files\MySQL\MySQL Server 5.7\bin>mysqld -install
 Service successfully installed.

 C:\Program Files\MySQL\MySQL Server 5.7\bin>net start mysql
 MySQL 服务正在启动 .
 MySQL 服务无法启动。

 服务没有报告任何错误。

 请键入 NET HELPMSG  以获得更多的帮助。

 C:\Program Files\MySQL\MySQL Server 5.7\bin> NET HELPMSG 

 服务没有报告任何错误。

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

 C:\Program Files\MySQL\MySQL Server 5.7\bin>mysql -hlocalhost -uroot -p
 Enter password: //直接回车

 ERROR  (HY000): Can't connect to MySQL server on 'localhost' (10061) 

 C:\Program Files\MySQL\MySQL Server 5.7\bin>net start mysql 30 MySQL 服务正在启动 . 31 MySQL 服务已经启动成功。 
 

 C:\Program Files\MySQL\MySQL Server 5.7\bin>mysql -hlocalhost -uroot -p 
 Enter password: 
 Welcome to the MySQL monitor. Commands end with ; or \g. 
 Your MySQL connection id is 3 
 Server version: 5.7.17 MySQL Community Server (GPL) 

 Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. 
  Oracle is a registered trademark of Oracle Corporation and/or its 
 affiliates. Other names may be trademarks of their respective 
 owners. 

 Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

 mysql> SET PASSWORD = PASSWORD('Abcd1234'); 
 Query OK, 0 rows affected, 1 warning (0.00 sec)

 mysql>

第二次安装完整流程：

1、安装主程序

2、进入命令行操作：

Microsoft Windows [版本 10.0.17763.805]
(c)  Microsoft Corporation。保留所有权利。

C:\Users\Administrator>cd C:\Program Files\MySQL\MySQL Server 5.7\bin

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

C:\Program Files\MySQL\MySQL Server 5.7\bin>mysqld -install
Service successfully installed.

C:\Program Files\MySQL\MySQL Server 5.7\bin>net start mysql
MySQL 服务正在启动 ..
MySQL 服务已经启动成功。

C:\Program Files\MySQL\MySQL Server 5.7\bin>mysql -hlocalhost -uroot -p
Enter password://直接回车
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is
Server version: 5.7. MySQL Community Server (GPL)

Copyright (c) , , Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> SET PASSWORD = PASSWORD('Abcd1234');
Query OK,  rows affected,  warning (0.00 sec)

mysql>

3、可以正常访问了...