Mina无法加载database.yml文件中的环境变量,如下所述:
deploy.rb:
task :deploy => :environment do
deploy do
# Put things that will set up an empty directory into a fully set-up
# instance of your project.
invoke :'git:clone'
invoke :'deploy:link_shared_paths'
invoke :'bundle
我有一个在清晨执行的方法,但是jdbc连接tomcat本身关闭,我不知道为什么和如何关闭。
The last packet successfully received from the server was 86.397.130 milliseconds ago. The last packet sent successfully to the server was 0 milliseconds ago.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflec
我有完整的数据库备份之前创建的joomla网站。但我不知道管理员的用户名和密码。我已经成功地导入了旧数据库,并在configuration.php中编辑了必要的详细信息,如用户、密码、db名称,但我仍然收到以下错误:
数据库错误:无法连接到数据库:无法连接到MySQL。
var $dbtype = 'mysql';
var $host = 'localhost';
var $user = 'root';
var $db = 'old_databasename';
var $dbprefix = 'jos_';
我
我使用MySQL8.0并尝试使用JSON_VALUE处理存储过程中的数组
CREATE PROCEDURE `tJS` ()
BEGIN
DECLARE _counter INT DEFAULT 0;
SET @arr = '["123","3","15"]';
WHILE _counter < JSON_LENGTH(@arr) DO
--here I want extract element with index _counter from @arr
SET @ix = CONC