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1: The user initiates a request, which will be intercepted by the front-end controller (dispatcher servlet) 2: The front-end controller (dispatcher servlet) requests the Handler mapping to find the Handler 3: The Handler mapping finds the corresponding Handler (which can be more annotated or XML configured) according to the configuration. It ...

Project notes 1, Project introduction This is a simple CRUD(Create Retrieve Update Delete) web page project based on SSM framework. The IDE used is IDEA2021.1. Due to the time problem, this article will introduce the first two parts. The problems and solutions that are easy to encounter in the project will be given in the following articl ...

explain: (1) In[ Spring JDBC and transaction management 5: Spring programmatic transaction; ]It is known that although programming transactions are easy to understand, they may forget to write transaction control code due to programmer level problems or negligence; Therefore, declarative transaction came into being; (2) This point should be c ...

E-commerce project summary E-commerce project (grain mall) 1, Project objectives: Cereal mall is a B2C e-commerce project, which sells self operated goods to customers. 2, Project architecture 1. Technical architecture The grain mall adopts the front and rear end separation development, which is a micro service project Front end developm ...

Spring framework -How to learn frame Know what a framework can doFrame syntaxInternal implementation will be considered after useThrough the above steps, you can implement a framework yourself 1, Overview 1. What is the framework Spring is a container management object, with attribute assignment and reflection mechanism at the bottom Mai ...

2021/9/3 1, Pre preparation First, go to wechat open platform for developer qualification certification Address: https://open.weixin.qq.com/ You must also understand Tencent's things (white whoring is impossible - > audit fee is required) After passing the certification, three core parameters need to be recorded 1,appid ...

What is a design pattern? Semantic concept: classic code to solve specific problems in object-oriented design.Narrow concept: 23 design modes defined by GOF4 Gang: factory, adapter, decorator, facade, agent, template 1, Factory design mode What is factory design pattern? Concept: create objects through factory classes; Benefits: deco ...

In the previous section, we simply used SpringBoot to complete HelloWorld. This section describes in depth how to use SpringBoot for container management, such as registering components in the container, reading resources, etc 2. Container management 2.1 registering components using configuration classes In Spring, we use Spring's xml conf ...

1. Dependence <dependency> <groupId>org.apache.shiro</groupId> <artifactId>shiro-spring</artifactId> <version>1.7.1</version> </dependency> <dependency> <groupId>org.apache.shiro</groupId> & ...

Preface AOP is a special feature of Spring. Face-oriented programming provides developers with a new way of development. It does not intrude into business logic, do not modify the code of business logic, and realize some necessary auxiliary functions of programs, such as output log, permission checking, transaction processing, etc. Elegant ...