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


     

     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

  • 相关阅读:
    数组逆序输出与简单的数据匹配
    冒泡排序及其优化
    类型转换
    Spring学习【Spring】
    logistic回归模型
    决策树算法(3)
    决策树算法(2)
    决策树算法(1)
    朴素贝叶斯算法
    k近邻算法
  • 原文地址:https://www.cnblogs.com/kaffeetrinken/p/9324513.html
Copyright © 2020-2023  润新知