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    mac终端下修改MySQL的编码格式--找不到my-default.cnf及my.cnf

    作者:admin来源:网络浏览:时间:2020-09-30 00:07:50我要评论
    导读:首先请确认正确安装好MySQL.  1- 先配置环境变量path    1.1 打开终端,输入: cd ~      会进入~文件夹,    1.2 然后...
    首先请确认正确安装好MySQL.

      1- 先配置环境变量path

        1.1 打开终端,输入: cd ~

          会进入~文件夹,

        1.2 然后输入:touch .bash_profile

          回车执行后,

        1.3 再输入:open -e .bash_profile

          会在TextEdit中打开这个文件(如果以前没有配置过环境变量,那么这应该是一个空白文档).

          如果有内容,请在结束符前输入,如果没有内容,请直接输入如下语句:

          export PATH=${PATH}:/usr/local/mysql/bin

          然后,保存,退出TextEdit(一定是退出),关闭终端并退出.

          此时应该可以直接用以下语句登入MySQL了

          >mysql -uroot -p

        1.4 关闭MySQL  !!!!(在系统偏好设置里面关闭MySQL)

      2- 重点来了!!!

        2.1 查看一下support-files文件夹(Finder下"前往文件夹";路径:/usr/local/mysql/support-files)

            里面有没有my-default.cnf或my.cnf文件...如果有则直接打开添加

          在[client] 在下面添加
          default-character-set=utf8 默认字符集为utf8
          在[mysqld] 添加
          default-character-set=utf8 默认字符集为utf8
          init_connect='SET NAMES utf8' (设定连接mysql数据库时使用utf8编码,以让mysql数据库为utf8运行)
          修改好后,重新启动mysql查看当前数据编码格式。

    >show variables like '%char%';
    +--------------------------+----------------------------+
    | Variable_name | Value |
    +--------------------------+----------------------------+
    | character_set_client | utf8 |
    | character_set_connection | utf8 |
    | character_set_database | utf8 |
    | character_set_filesystem | binary |
    | character_set_results | utf8 |
    | character_set_server | utf8 |
    | character_set_system | utf8 |
    | character_sets_dir | /usr/share/mysql/charsets/ |
    +--------------------------+----------------------------+
        若终端出现如上样式则OK了,否则继续往下看:

        2.2 support-files文件夹里面没有my-default.cnf或my.cnf文件,那么就要在/etc下新建my.cnf

          $ cd /etc

          $ sudo vim my.cnf

        2.3 进行完上步操作后会进入vim模式,此时复制(***文本)的内容粘贴进去,,(不包含   ***文本 );

        2.4 粘贴成功后注意看vim的第一行"#"有没有丢掉(本人就丢过~~哈哈~),都OK的话点esc退出编辑,

          :wq!     --保存后强制退出.[附几个编辑命令:dd   删除光标所在行; dw   删除一个字(word); x   删除当前字符].



    (***文本):



    # Example MySQL config file for medium systems.
    #
    # This is for a system with little memory (32M - 64M) where MySQL plays
    # an important part, or systems up to 128M where MySQL is used together with
    # other programs (such as a web server)
    #
    # MySQL programs look for option files in a set of
    # locations which depend on the deployment platform.
    # You can copy this option file to one of those
    # locations. For information about these locations, see:
    # http://dev.mysql.com/doc/mysql/en/option-files.html
    #
    # In this file, you can use all long options that a program supports.
    # If you want to know which options a program supports, run the program
    # with the "--help" option.
    # The following options will be passed to all MySQL clients
    [client]
    default-character-set=utf8
    #password = your_password
    port = 3306
    socket = /tmp/mysql.sock
    # Here follows entries for some specific programs
    # The MySQL server
    [mysqld]
    character-set-server=utf8
    init_connect='SET NAMES utf8
    port = 3306
    socket = /tmp/mysql.sock
    skip-external-locking
    key_buffer_size = 16M
    max_allowed_packet = 1M
    table_open_cache = 64
    sort_buffer_size = 512K
    net_buffer_length = 8K
    read_buffer_size = 256K
    read_rnd_buffer_size = 512K
    myisam_sort_buffer_size = 8M
    character-set-server=utf8
    init_connect='SET NAMES utf8'
    # Don't listen on a TCP/IP port at all. This can be a security enhancement,
    # if all processes that need to connect to mysqld run on the same host.
    # All interaction with mysqld must be made via Unix sockets or named pipes.
    # Note that using this option without enabling named pipes on Windows
    # (via the "enable-named-pipe" option) will render mysqld useless!
    #
    #skip-networking

    # Replication Master Server (default)
    # binary logging is required for replication
    log-bin=mysql-bin

    # binary logging format - mixed recommended
    binlog_format=mixed

    # required unique id between 1 and 2^32 - 1
    # defaults to 1 if master-host is not set
    # but will not function as a master if omitted
    server-id = 1

    # Replication Slave (comment out master section to use this)
    #
    # To configure this host as a replication slave, you can choose between
    # two methods :
    #
    # 1) Use the CHANGE MASTER TO command (fully described in our manual) -
    # the syntax is:
    #
    # CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
    # MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
    #
    # where you replace <host>, <user>, <password> by quoted strings and
    # <port> by the master's port number (3306 by default).
    #
    # Example:
    #
    # CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
    # MASTER_USER='joe', MASTER_PASSWORD='secret';
    #
    # OR
    #
    # 2) Set the variables below. However, in case you choose this method, then
    # start replication for the first time (even unsuccessfully, for example
    # if you mistyped the password in master-password and the slave fails to
    # connect), the slave will create a master.info file, and any later
    # change in this file to the variables' values below will be ignored and
    # overridden by the content of the master.info file, unless you shutdown
    # the slave server, delete master.info and restart the slaver server.
    # For that reason, you may want to leave the lines below untouched
    # (commented) and instead use CHANGE MASTER TO (see above)
    #
    # required unique id between 2 and 2^32 - 1
    # (and different from the master)
    # defaults to 2 if master-host is set
    # but will not function as a slave if omitted
    #server-id = 2
    #
    # The replication master for this slave - required
    #master-host = <hostname>
    #
    # The username the slave will use for authentication when connecting
    # to the master - required
    #master-user = <username>
    #
    # The password the slave will authenticate with when connecting to
    # the master - required
    #master-password = <password>
    #
    # The port the master is listening on.
    # optional - defaults to 3306
    #master-port = <port>
    #
    # binary logging - not required for slaves, but recommended
    #log-bin=mysql-bin

    # Uncomment the following if you are using InnoDB tables
    #innodb_data_home_dir = /usr/local/mysql/data
    #innodb_data_file_path = ibdata1:10M:autoextend
    #innodb_log_group_home_dir = /usr/local/mysql/data
    # You can set .._buffer_pool_size up to 50 - 80 %
    # of RAM but beware of setting memory usage too high
    #innodb_buffer_pool_size = 16M
    #innodb_additional_mem_pool_size = 2M
    # Set .._log_file_size to 25 % of buffer pool size
    #innodb_log_file_size = 5M
    #innodb_log_buffer_size = 8M
    #innodb_flush_log_at_trx_commit = 1
    #innodb_lock_wait_timeout = 50

    [mysqldump]
    quick
    max_allowed_packet = 16M

    [mysql]
    no-auto-rehash
    # Remove the next comment character if you are not familiar with SQL
    #safe-updates
    default-character-set=utf8

    [myisamchk]
    key_buffer_size = 20M
    sort_buffer_size = 20M
    read_buffer = 2M
    write_buffer = 2M

    [mysqlhotcopy]
    interactive-timeout
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