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Article directory Environment creation and simple query, see the previous article 1Specifications dynamic query 1.1 query single object according to conditions 1.2 multi criteria query 1.3 fuzzy matching, sorting 1.4 paging query 2. Relationship between multiple tables and operation steps of multip ...

Using DDD to develop the classification module of e-commerce system. We will discuss two commodity classifications in e-commerce system, namely, the commodity classification of e-commerce system category and the commodity classification customized by merchants. The domain model is used to implement thes ...

I haven't been writing a blog for a while, and I've been missing my thoughts. I have time to write a post today.Previous leaders proposed to optimize part of the system module, according to business requirements, there are many products in the system, there are N indicators under the product, one indicator corresponds to a method, so the system ...

1, Initialization process of dispatcher Servlet The dispatcher servlet inherits the HttpServletBean class, which contains the initialization method init(), whose code is as follows: /** * Map config parameters onto bean properties of this servlet, and * invoke subclass initialization. * @throws ServletException if bean properties are in ...

The letter X is actually the first letter of XML, and the X namespace corresponds to this statement: xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml", which contains classes related to parsing the XAML language and is divided into three main categories: Attribute, tag extension, instr ...

Class Object The Object class (base class) is the root parent of all java classes. Multi level inheritance. The parent class at the highest level must be the Object class. For example, if you want to set a parameter parameter for the test method, which class will be passed in if you are not sure about ...

Why play video with OpenGL ES We all know that there is a VideoView control in Android that can play video directly, which is both simple and practical. So why do we use OpenGL ES to play video? That's because OpenGL ES can do more cool dynamic effects, such as rotating video, double finger zooming v ...

Catalog   brief introduction Implementation process epilogue brief introduction Using python to realize pygame version of the aircraft war game; Environment: Windows system + python3.8.0 Rules of the game: 1. Click "PLAY" or press "P" to start the game; 2. The enemy air ...

The second chapter has written the basic configuration method of XML, so this one starts to write the advanced configuration of XML (nothing, maybe I just said that...) Talk less now 1. Relationship between beans: inheritance or dependency If you configure two beans, but find that many of the prope ...

gui design example based on tkinter (beast speech generator v1.0.0) Take the beast first speech generator as an example Previous article address, beast speech generator v0.1.0 Main event cycle Similar to other gui window implementations, it is based on a circular refresh of the main window, and th ...