ruby连接数据库

require 'mysql'

con = Mysql.new('localhost','root','','ror')
rs = con.query("select * from test")
num = rs.num_rows()

for i in 0..num-1
rs.data_seek(i)
a=rs.fetch_hash()
puts a['id']
end

rs.free()
con.close

前提不要忘记 >gem install mysql