Tag：open
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Time：2020-12-23
[foreword] Before, due to the wrong operation of Xiaobian, an item about SQL in the registration form was deleted by mistake. What was deleted was also forgotten. At that time, it was to solve a SQL problem, but the problem was not solved. Instead, SQL was unable to be repaired, installed or unloaded. However, due […]
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Time：2020-12-7
This article mainly introduces how spring can open another transaction in one transaction. It is introduced in detail through the example code, which has certain reference learning value for everyone’s study or work. Friends in need can refer to it Spring uses @ transactional to start a transaction, and the annotation uses the propagation property […]
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Time：2020-4-22
The example of this article describes the error prompt of laravel framework access: ` warning require (vendorautoload. PHP) failed to open stream no such file or dire solution. To share with you for your reference, as follows: Error message: `Warning: require(/http/www.mywakavLee.cn/bootstrap/../vendor/autoload.php): failed to open stream: No such file or directory in /http/www.mywakavLee.cn/bootstrap/autoload.php on line 17 […]
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Time：2020-3-31
1、 Xhosts error After vncserver is installed, the local PC Notebook can connect to the Oracle server remotely through VNC viewer, but in the process of xhost + error reporting, localhost, 127.0.0.1 and local IP address, all of which are unable tool display, as shown below: [[email protected] ~]# export DISPLAY=localhost:1 [[email protected] ~]# xhost xhost: unable […]
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Time：2020-2-9
This is a very important topic, not only for Linux administrators, but also for all of us. I mean, it’s also very useful for users working in IT infrastructure industry to understand this topic. They need to check that a port on the Linux server is turned on before proceeding to the next step. If […]
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Time：2019-12-26
Printers have become the peripherals we often use. We also know that the printer service of the system must be turned on when the printer is needed. How to turn on the printer service of the win7 system? Here’s how to set up the printer service. I hope it can help you. To set the […]
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Time：2019-10-9
This paper illustrates the expansion and contraction of text functions implemented by JavaScript using substring. Share for your reference, as follows: The effect is as follows: <!DOCTYPE html> <html lang=”en”> <head> <meta charset=”UTF-8″> <title>www.jb51.net Expansion and Contraction </title> <style> p { margin: 0 auto; width: 500px; padding: 20px; border: 5px solid #888; background-color: #ffcc33; } […]
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Time：2019-8-18
Preface Recently, there is a requirement to get the data newly inserted into MongoDB in real time, and the insertion program itself already has a set of processing logic, so it is not convenient to write related programs directly in the insertion program. Traditional databases mostly have this trigger mechanism, but Mongo has no relevant […]
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Time：2019-7-1
The cmd_shell component in SQL Server is powerful and can realize almost all the functions of Windows system through this component. Therefore, this component is also the biggest security risk of SQL Server. This component in SQL Server 2000 is turned on by default, while in SQL Server 2005 it is turned off by default […]
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Time：2019-5-19
When adding a row to a database table, this function is useful when inserting a specific value for the self-adding column, such as table structure: id | text 1 | a 2 | b 4 | d If we want to insert 3 | c, if we don’t open the self-adding […]
