The SSM (Spring+SpringMVC+MyBatis) framework set is integrated by two open source frameworks, Spring and MyBatis (SpringMVC is part of Spring). Often used as a framework for web projects with simple data sources.
We have a professional team of writers and a strict confidentiality system. Our engineers have accumulated rich experience in various fields of software engineering development and design to ensure service levels. In the past two years, we have helped at least 50 computer students to pass the design test every season, and give them a good design. It is our obligatory responsibility to serve every student.
You can add my. deduction. deduction. No. (one zero three two three seven one second), we will discuss and study together.
After the finished product design is completed, we can also provide you with a special code explanation service, including you fully understand the code content, and pass the defense smoothly.
Spring
Spring just Like a large factory for assembling beans in the entire project, in the configuration file you can specify the use of specific parameters to call the constructor of the entity class to instantiate the object. It can also be called the adhesive in the project.
The core idea of Spring is IoC (Inversion of Control), that is, programmers no longer need to explicitly new an object, but let the Spring framework do it for you.
SpringMVC
SpringMVC intercepts user requests in the project. Its core Servlet, DispatcherServlet, assumes the responsibilities of intermediary or front desk, and matches user requests to the Controller through HandlerMapping. The Controller is the specific operation performed by the request. SpringMVC is equivalent to struts in the SSH framework.
mybatis
mybatis is an encapsulation of jdbc, which makes the underlying operation of the database transparent. The operation of mybatis revolves around an instance of sqlSessionFactory. Mybatis is associated with the Mapper file of each entity class through the configuration file. The Mapper file is configured with the SQL statement mapping required by each class to the database. Every time you interact with the database, you get a sqlSession through sqlSessionFactory, and then execute the sql command.
The page sends a request to the controller, the controller calls the business layer processing logic, the logic layer sends a request to the persistence layer, the persistence layer interacts with the database, and then returns the result to the business layer, the business layer sends the processing logic to the controller, and the controller then Call the view to display the data.
Get in touch with us and put forward your writing requirements to us; our consultants will communicate with you on "service content, service requirements, service hours, other requirements" and other aspects according to your service needs. The finished product design is completely based on originality, and it is by no means the inferior product modified by other tortoises in the market.
Spring:
Spring is the most popular enterprise-level Java application development framework. Millions of developers use the Spring framework to create high-performance, easy-to-test, and reusable code. This course explains Spring's core technologies IoC and AOP in a simple way, and analyzes the source code of the framework. Allow students to master the principles and applications of the framework.
SpringMVC:
SpringMVC is a powerful web development framework based on Spring. The course starts from the basics and explains the relevant technical points of SpringMVC framework web application step by step. Take annotation as the core @Controller, RequestMapping, @ControllerAdvice, @ExceptionHandler, etc. Spring important object interceptor, exception handler, source code analysis. Integrate popular SSM.
① Download the source code
git clone https://github.com/19920625lsg/java-thread.git
② Create a database
Create a new exam database and import SQL files
spring-boot-online-exam/doc/sql/exam.sql
③ Import the back-end code and modify the configuration file
Import code
The path of the configuration file application.yml
spring-boot-online-exam/backend/exam/src/main/resources/application.yml
Mainly modify database connection information
Start backend
com.huawei.l00379880.exam.ExamApplication
④ Start the front end
Enter the front-end code path
spring-boot-online-exam/frontend/exam/
Install js dependencies
npm install
Start the front end
npm run serve
0x04: query effect
System user: The accounts are admin, teacher, student, and the password is admin123
Login page
Home
Exam list page
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