[英]Ruby gem failure to load - Unable to load driver 'MySQL'
我有一個已運行多年的應用程序。 然后,我們將服務器遷移到Ubuntu 15.04並安裝了Ruby。
sudo apt-get install curl
sudo apt-get install ruby2.1
sudo gem update --system
sudo apt-get install rake
apt-get install ruby-dev
sudo gem install amatch
sudo apt-get install libmysqlclient-dev
sudo gem install -r dbi
sudo gem install -r mysql dbd-mysql
然后,我們運行程序並得到此錯誤。
/var/lib/gems/2.1.0/gems/dbi-0.4.5/lib/dbi.rb:300:in `block in load_driver': Unable to load driver 'MySQL' (underlying error: uninitialized constant DBI::DBD::MySQL) (DBI::InterfaceError)
from /usr/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
from /var/lib/gems/2.1.0/gems/dbi-0.4.5/lib/dbi.rb:242:in `load_driver'
from /var/lib/gems/2.1.0/gems/dbi-0.4.5/lib/dbi.rb:160:in `_get_full_driver'
from /var/lib/gems/2.1.0/gems/dbi-0.4.5/lib/dbi.rb:145:in `connect'
程序本身(更改用戶名和密碼)
#!/usr/bin/ruby
require "rubygems"
gem 'mysql'
gem 'dbi'
require "dbi"
require "amatch"
include Amatch
name_sub = { "unit" => "un",
"unt" => "un",
"tract" => "tr",
"estate" => "est",
"university" => "univ",
"trust" => "trst" }
op_sub = { "partnership" => "PS",
"partnershp" => "PS",
"partner" => "PS",
"prtnr" => "PS",
"ptnr" => "PS",
"ptnrsp" => "PS",
"corporation" => "C",
"corp" => "C",
"company" => "co",
"incorporation" => "I",
"inc" => "I",
"oil" => "O",
"gas" => "G",
"exploration" => "E",
"production" => "P",
"operating" => "oper",
"energy" => "engy",
"management" => "mgmt",
"resources" => "res",
"minerals" => "min",
"petroleum" => "pet" }
def mangle(s, dictionary = {})
return "" unless s
# lowercase | special case | alphanumerics only
s.downcase().gsub(/l.l.c./, 'llc').gsub(/\W/, " ").split(" ").map do |word|
dictionary.fetch(word, word)
end.join(' ')
end
stop_attempts = -1
PRODUCTION = false
begin
# now the actual code
# development database
DBI.connect("dbi:MySQL:database=matching;" "host=enus", "mott", "bM^7ezOqYyn") do |outdb|
DBI.connect("dbi:MySQL:database=ownership;" "host=enus", "mott", "bM^7ezOqYyn") do |lease_db|
# re-create phase3 table
outdb.do("drop table if exists phase3")
sql = "create table phase3 (" +
"id bigint not null auto_increment primary key, " +
"lod_id bigint, rrc_id bigint, district varchar(255), " +
"name_percent float, rrc_lease_no varchar(255)," +
"op_percent float, field_percent float, total float, " +
"key k1 (lod_id), key k2 (rrc_id), key k3 (district), " +...
詳盡的Google搜索發現了有關安裝dbd-mysql的建議,以及其他建議,但沒有一個起作用。
那么,這里失敗了嗎? 我不是Ruby方面的人,我是一個試圖將其備份並運行的低級IT人士。
看起來大小寫敏感的文件系統存在一些問題,在我的Mac上嘗試這樣做,但是我可以通過將連接字符串從“ MySQL”更改為“ Mysql”來進行測試,例如:
2.1.5@test_dbi ~$ cat test_dbi.rb
#!/usr/bin/ruby
require "rubygems"
require 'dbi'
DBI.connect("dbi:Mysql:database=matching;" "host=enus", "mott", "bM^7ezOqYyn")
2.1.5@test_dbi ~$
解決了問題。
核心失敗是Ruby 2.1.0本身的錯誤代碼。 請參閱此處修復Ruby本身。 [ ruby 1.8.7和2.1之間的DBI行/委托行為
一旦開始出現錯誤,我便將Mysql的DBI調用更改為MySQL,希望對其進行修復,但這僅引起了另一個問題。
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