Detailed explanation of the Thundr framework technical principles and design ideas in the Java class library

Thundr is an open source Java Web framework that provides a simple and flexible way to build a web application.The design idea of the Thundr framework is to simplify the development process and improve application performance. 1. MVC architecture: Thundr uses a classic model-view-controller (MVC) architecture.This architecture mode separates different parts of the application, so that developers can focus on different aspects.The model represents the data and business logic of the application. The view is responsible for the user interface. The controller handles user requests and updates the view according to the changes of the model. 2. Convention-Over-Configuration: The Thundr framework introduces the concept of agreed better than configuration, and reduces the configuration of developers through some default agreement.For example, the framework will automatically maximize the URL to the corresponding controller and action method according to the naming specification, thereby simplifying the URL routing configuration. 3. Thread security: Thundr framework considers thread security when designing.The core components of the framework are thread -safe to ensure that the concurrent requests can be handled correctly in a multi -threaded environment. 4. Dependent injection: Thundr framework uses dependency injection to manage the dependency relationship between components.By relying on the externalization of dependence, developers can easily replace and test different components. The example code and related configuration of the Thundr framework are shown below: 1. Controller code example: @UrlPattern("/hello") public class HelloController { @Get public void hello(RequestContext context) { context.render("Hello, Thundr!"); } } 2. Configure file examples (thundr.properties): thundr.mappings=.controllers 3. Start class code example: public class Application { public static void main(String[] args) { ThundrConfig config = new ThundrConfig(); config.add(ConfigurationKey.CONTROLLERS_PACKAGES, "com.example.controllers"); Thundr thundr = new Thundr(config); thundr.start(); } } In the above example, we define a simple controller class hellocontroller, which uses Thundr's annotation @UrlPattern and @Get to specify URL mapping and request methods. In the configuration file Thundr.properties, we designate the bag path of the controller class. In the start -up class Application, we created a Thundrconfig object and configured the package path of the controller, and then created the Thundr object and started. Through the above code and configuration, we can access http: // localhost: 8080/hello in the browser, and you can see the page display "Hello, Thundr!". In summary, the Thundr framework provides a simple and flexible way to build a Java Web application through the MVC architecture, agreed than configuration, thread security, and dependent injection.Developers can configure the controller and routing as needed, process the request through annotations, and use dependency injection to manage the dependent relationship between components.This enables developers to focus more on the realization of business logic and improve development efficiency and application performance.