gem install --local watir-1.5.2.gem 

#encoding: utf-8 
require 'DBI' 
require 'odbc_utf8' 
 
def generate_sql(table, what=nil, where=nil) 
 what="*" unless what 
 where="1=1" unless where 
 "select %s from %s where %s" % [what, table, where] 
end 
 
def generate_hash(header, all_data) 
 t_arr = [] 
 all_data.each do | row | 
 t_hash = {} 
 for i in 0..header.size-1 do 
  t_hash[header[i]] = row[i] 
 end 
 t_arr << t_hash 
 end 
 t_arr 
end 
 
def select_hash_db(dsn,user,password,db,sql) 
 begin 
 dbh = DBI.connect(dsn, user, password) 
 dbh.do("use #{db}") 
 dbh.do("SET NAMES UTF8") if dsn.split(':')[1] == "Mysql" 
 sth = dbh.execute(sql) 
 arr = Array.new 
 sth.fetch_hash do | row | 
  arr << row 
 end 
 sth.finish 
 arr 
 rescue DBI::DatabaseError => e 
 puts "An error occurred" 
 puts "Error code: #{e.err}" 
 puts "Error message: #{e.errstr}" 
 ensure 
 dbh.disconnect if dbh 
 end 
end 
 
class Text_Adapter 
 
 def initialize(file_path, sep=" ", col_num=nil, row_num=nil) 
 
 end 
 
 def get_pars(row=nil) 
 
 end 
 
end 
 
class Mysql_Adapter 
 def initialize(ds_connector, table_name, what=nil, where=nil) 
 @sql_str = generate_sql(table_name, what, where) 
 @ds_connector = ds_connector 
 end 
 
 def get_pars(row=nil) 
 dsc_arr = @ds_connector.split("#") 
 all_data = select_hash_db(dsc_arr[0],dsc_arr[1],dsc_arr[2],dsc_arr[3],@sql_str) 
 if row.class==Fixnum 
  all_data[row] 
 else 
  all_data 
 end 
 end 
end 
 
class Excel_Adapter 
 
 def initialize(ds_connector, table_name, what=nil, where=nil) 
 @connection = WIN32OLE.new('ADODB.Connection') 
 @record_set = WIN32OLE.new('ADODB.Recordset') 
 @ds_connector = ds_connector 
 @sql_str = generate_sql(table_name, what, where) 
 end 
 
 def get_pars(row=nil) 
 t_arr = [] 
 @connection.Open(@ds_connector) 
 @record_set.Open(@sql_str, @connection) 
 @record_set.Fields.count.times do | i | 
  t_arr << @record_set.Fields.Item(i).name 
 end 
 all_data = @record_set.GetRows.transpose 
 all_data = generate_hash(t_arr, all_data) 
 if row.class==Fixnum 
  all_data[row] 
 else 
  all_data 
 end 
 end 
end 
 
 
class Parameter 
 def initialize(ds_connector, table_name, what=nil, where=nil) 
 dsc_arr = ds_connector.split("#", 2) 
 eval("@adp = #{dsc_arr[0]}.new dsc_arr[1], table_name, what, where") 
 end 
 
 def get_pars(row=nil) 
 @adp.get_pars(row) 
 end 
end 

par = Parameter.new(Ds_mysql_connector, 'demo') 
p par.get_pars(0) 

##链接excel中数据库的串 
EXCEL_DSN = %{Excel_Adapter#Provider=MicroSoft.Jet.OLEDB.4.0;Data Source=%s;Extended Properties=Excel 5.0;} 
EXCEL_FILE = %{D:\\1.xlsx} 
##链接mysql的串 
Ds_mysql_connector = %{Mysql_Adapter#DBI:Mysql:shoppingcart:127.0.0.1#root#password#shoppingcart} 
##指定当次运行侧事故参数的行号，从0开始 
PAR_ROW = 1