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The content of this article mainly focuses on how to carry out Struts2.x analysis. The content of the article is clear and well-organized. It is very suitable for beginners to learn and is worth reading. Interested friends can follow the editor to read together. I hope you can get something through this article!

The Struts2 framework is designed for the entire development cycle, including creating, developing and maintaining the entire program. It is extremely extensible, every class of the framework is interface-based, and all the basic classes are available in the extension, and you can even add your own. The basic platform requirements are Servlet API 2.4, JSP API 2.0 and Java 5. 0.

Here are some common features of the current Apache Struts2 framework:

Structure: first, the web browser sends a request, and the FilterDispatcher decides the matching action to deal with, then the interceptor implements some specified functions, the Action method realizes all the functions such as storing and retrieving the data in the database, and the final result is presented on the browser in the form of HTML, PDF, pictures or other forms.

Tags: tags in Struts2 make creating dynamic web programs require less code. Tags not only contain data output, but also provide tag-driven stylesheets that require less code to create pages. Tags also provide available validation and localization code. A small amount of code is easier to understand and maintain.

MVC: MVC in Struts2 acts as a coordinator between the program model and the web view. Controller and view components can be combined with other technologies to develop models. The framework's class libraries and tags can render data dynamically.

Configuration: a configuration descriptor in XML format is provided to initialize resources. The initialization implementation simply scans all the classes in the Java package, or you can use the configuration file to manage the entire configuration

The general default configuration also allows struts to be put into use immediately.

Configuration files can be loaded automatically, making any changes unnecessary to restart the web container

Other features:

The classes in the framework are all based on interfaces, and the core interfaces are independent of HTTP

CheckBox does not need any special programs to handle false values

Any Java class can be used as an action class, and you can use JavaBean to pass parameters directly to action

Struts2's action is spring-friendly and can be easily integrated with spring

The AJAX theme makes the program more dynamic.

Since automatic portlet is supported without code modification, the configuration of Portal and servlet is easy.

Request processing in each action is easily customized when needed

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