Ruby实践—连接Mysql
安装环境：
OS：Windows XP
Ruby: Ruby1.9.1
Mysql: Mysql5.1.46 （username/password: root/root port:3306）
Ruby-Mysql Driver: mysql-2.8.1-x86-mswin32.gem
（注：用2.7.3版本的驱动在测试时会出现 require"mysql"，找不到指定模块 错误）
IDE：RubyMine2.0.1
安装Ruby,RubyMine,Mysql的事项在这里就不多说了，提一下安装驱动的步骤
1）在Mysql安装目录的 bin 目录下，找到 ibmySQL.dll ，将该文件复制到 Ruby 安装目录的 bin 目录中
2）http://rubyforge.org/frs/?group_id=1598，下载 mysql-2.8.1-x86-mswin32.gem，这是 mysql_Ruby驱动程序。
命令行，进入该文件所在目录，运行 gem install mysql-2.8.1-x86-mswin32.gem ，安装成功即可。
创建Ruby测试类
MysqlTest.rb
class MysqlTest #Code here require "mysql" def testMysql dbc=Mysql.real_connect('localhost','root','root','mysql') res=dbc.query('select * from user') puts "Test Mysql...." while row=res.fetch_row do puts "#{row[0]}" end end def createTable dbc=Mysql.real_connect('localhost','root','root','test') dbc.query("drop table if exists cux_users") dbc.query("create table cux_users(id int,name char(20))") dbc.query("insert into cux_users values(1,'Tom')") printf "Create Table........" printf "%d rows were inserted/n",dbc.affected_rows res = dbc.query("SELECT name FROM cux_users") puts "===Select Data===/n" while row = res.fetch_row do printf "%s, %s/n", row[0], row[1] end puts "==================/n" puts "Server version: " + dbc.get_server_info rescue Mysql::Error => e puts "Error code: #{e.errno}" puts "Error message: #{e.error}" puts "Error SQLSTATE: #{e.sqlstate}" if e.respond_to?("sqlstate") ensure puts "Close Connection......." dbc.close if dbc end (MysqlTest.new).testMysql (MysqlTest.new).createTable end
测试结果：
C:/Ruby19/bin/ruby.exe -e STDOUT.sync=true;STDERR.sync=true;load($0=ARGV.shift) E:/Ruby/Test/com.crystal/mysql_test.rb
Test Mysql....
localhost
Create Table........1 rows were inserted
===Select Data===
Tom,
==================
Server version: 5.1.46-community
Close Connection.......
Process finished with exit code 0
查看数据库test
