Spring MVC CRUD Implementation Guide

Implementing create, read, update, and delete (CRUD) functionality in Spring MVC typically involves the following steps:

1. To create an entity class: first, you need to create a class that represents the table structure in the database, including properties and corresponding getter and setter methods.
2. Establishing the DAO layer: Write database operations in the DAO (Data Access Object) layer, including methods such as insert, delete, update, and select. Frameworks like Hibernate and MyBatis can be used to simplify database operations.
3. Establishing Service layer: Write business logic in the Service layer, call methods from the DAO layer to achieve CRUD operations, and manage transactions where necessary.
4. Developing the Controller layer involves writing methods to handle requests, receiving parameters from the frontend, invoking methods from the Service layer to carry out the corresponding business logic, and returning the results to the frontend page.
5. Create a front-end page: Write code on the front-end page to create forms and display data. Use Ajax or form submission to send requests to the Controller layer, and display the returned data on the page.
6. Set up Spring MVC: Configure beans for Controller, Service, DAO, etc. in the Spring MVC configuration file, as well as any relevant information for database connections.

By following the steps above, you can achieve basic functions for adding, deleting, updating, and searching. In actual development, you can make appropriate extensions and optimizations based on specific business needs.