What are the characteristics of the Struts2 framework and how is it used?

2 years ago
William Carter
2 minutes

The Struts2 framework has the following characteristics:

  1. MVC Architecture: Struts2 utilizes the classic MVC (Model-View-Controller) design pattern, dividing the application into model, view, and controller components for a clearer and more manageable structure.
  2. Object-oriented: The Struts2 framework is developed based on Java’s object-oriented programming principles, utilizing features such as inheritance, encapsulation, and polymorphism, which make development more flexible and extensible.
  3. Interceptor support: Struts2 offers a rich interceptor mechanism, which allows for configuring interceptors to handle request preprocessing, postprocessing, and exception handling, enhancing the flexibility and scalability of the application.
  4. Powerful form processing: Struts2 offers strong form processing capabilities that make it easy to validate, convert, and display form data, reducing the workload for developers.
  5. Internationalization support: The Struts2 framework includes built-in support for internationalization, making it easy to implement applications in multiple languages.

How to utilize the Struts2 framework:

  1. Introduce Struts2 library: Include the necessary Struts2 library files in the project.
  2. Configure Struts2: Create a struts.xml configuration file that defines the mapping relationships of various Action classes and interceptor information.
  3. Write Action class: Create an Action class to handle requests by implementing the Action interface or extending the ActionSupport class, and write corresponding business logic in the class.
  4. Write a view: Develop a JSP page to display data and retrieve data from the Action class using tags or EL expressions.
  5. Set up web.xml: Configure the Struts2 filter in the web.xml file to intercept requests and hand them over to the Struts2 framework for processing.
  6. To run the project, start the application server and visit the URL address of the project to see the effect of Struts2 framework processing.

The above are the basic steps for using the Struts2 framework, more specific usage can be found in the official documentation and tutorials provided by Struts2.

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