Mysql5.7.17在windows下安裝打開時提示不成功問題的處理方法

在機器上首次安裝MySQL，

操作系統(tǒng)是win7

mysql 的安裝文件是 zip 格式的，版本是5.7.17

解壓之后，安裝步驟是

1、首先找個文件存放這些安裝程序以及 數(shù)據(jù)

假設(shè)是E:\\mysql

2、把解壓的文件放在E:\\mysql下，并且新建個data文件夾

3、創(chuàng)建環(huán)境變量mysql 路徑是E:\\mysql

添加到path 中 %MYSQL%\bin;

4、在解壓的文件夾下有個my-default.ini

的文件，首先拷貝一份，重命名為my.ini

修改文件內(nèi)容

只修改兩行就行

basedir = E:\\mysql 
datadir = E:\\mysql\\data

這兩行原先是用#號注釋掉的，

5、用系統(tǒng)管理員身份啟動命令行

輸入mysqld -install

這個是安裝mysql 服務(wù)的

6、輸入 mysqld --initialize

這個是因為 自動5.7.7版本之后，windows安裝mysql通過zip解壓的方式，不再包含data 文件夾，

如果沒有data文件夾，則會在啟動mysql服務(wù)的時候起不來，觀察data文件夾下后綴名是.err的文件就可以發(fā)現(xiàn)，會報這么一些錯誤

MySQL: Table 'mysql.plugin' doesn't exist 
2017-01-01T17:13:33.200113Z 0 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it. 
2017-01-01T17:13:33.202113Z 0 [Note] Salting uuid generator variables, current_pid: 6908, server_start_time: 1483290810, bytes_sent: 0,  
2017-01-01T17:13:33.237115Z 0 [Note] Generated uuid: '9fb87162-d045-11e6-b092-00ff173a9c42', server_start_time: 1483297718, bytes_sent: 114009376 
2017-01-01T17:13:33.241115Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 9fb87162-d045-11e6-b092-00ff173a9c42. 
2017-01-01T17:13:33.248116Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened. 
2017-01-01T17:13:33.250116Z 0 [Warning] Failed to set up SSL because of the following SSL library error: SSL context is not usable without certificate and private key 
2017-01-01T17:13:33.254116Z 0 [Note] Server hostname (bind-address): '*'; port: 3306 
2017-01-01T17:13:33.259116Z 0 [Note] IPv6 is available. 
2017-01-01T17:13:33.260117Z 0 [Note]  - '::' resolves to '::'; 
2017-01-01T17:13:33.261117Z 0 [Note] Server socket created on IP: '::'. 
2017-01-01T17:13:33.266117Z 0 [Warning] Failed to open optimizer cost constant tables 
2017-01-01T17:13:33.268117Z 0 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist 
2017-01-01T17:13:33.270117Z 0 [ERROR] Aborting

其實這是因為這些表示放在data文件夾下的，所以我們需要先執(zhí)行命令mysqld -initialize在完成mysql 的初始化，這樣的話，mysql會自動完成一些初始化的工作

7、啟動服務(wù) net start mysql

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