Spring framework Foundation

1,Spring 1.1 INTRODUCTION Spring: Spring - > brings spring to the software industry In 2002, the prototype of Spring framework, interface21 framework, was launched for the first time Spring framework is based on interface21 framework. After redesign and constantly enriching its connotation, it released the official version of 1.0 on Mar ...

Posted by Owe Blomqvist on Fri, 20 May 2022 03:52:39 +0300

JDBC connection database

1, jdbc connection to mysql above 8.0 After the mysql version above 8.0 is updated, the corresponding jdbc connection has also changed. First of all, we need to configure the mysql environment. It is recommended that you go to the Internet to find a tutorial and follow it. I won't talk about the installation and configuration of mysql here. ...

Posted by mjl4975 on Fri, 20 May 2022 03:06:37 +0300

Common methods of string

1.trim() The trim() method removes the white space characters at both ends of the string. The white space characters in this context are all white space characters let getting = ' Hello Word' console.log(getting); //' Hello Word' console.log(getting.trim()); //'Hello Word' 2. length Length indicates the length o ...

Posted by nut legend on Fri, 20 May 2022 03:58:16 +0300

No, metaclass. How dare you say you can Python?

python is a magical language. The magical place is that everything is an object, so if you don't have an object, you should be able to find true love here. What is all objects? What is an object? What does it have to do with class? In python, when we define classes, we often class A(object): pass We all know that this object is a paren ...

Posted by Stickdragon on Fri, 20 May 2022 02:57:07 +0300

Adapter mode_Dark horse programmer study notes

Overview If you go to European countries to travel, their sockets are on the far left as shown in the picture below, which are European standards. And the plug we use is on the far right of the picture below. Therefore, our laptops and mobile phones cannot be directly charged locally. So we need a socket converter. The first side of the conv ...

Posted by FD_F on Fri, 20 May 2022 03:37:43 +0300

Basic knowledge of JS (covering basic interview questions)

Summarize some basic front-end knowledge. Some knowledge may be asked during the front-end interview, so making a record will also help others check. If there are any questions, you can point them out and actively correct them. Variable types and calculations What are the types of typeof in JS console.log(typeof undefined); //undefi ...

Posted by AMV on Fri, 20 May 2022 02:05:46 +0300