Pages and URL routing in the Tapestry Core framework

Tapestry Core framework is an open source Java framework for building a modern web application.This framework provides many functions and tools that allow developers to easily build maintenance and scalable web applications.One of the core functions is the management of pages and URL routing. In the Tapestry Core framework, the page is one of the components of the web application.Each page has a corresponding URL, and the user can access the page through the URL.The URL routing refers to the process of mapping the URL to the specific page.The Tapestry Core framework uses a agreed method to manage the page and the URL routing, enabling developers to easily define the relationship between the management page and the URL. To create a page and define its URL, developers can achieve it by creating a Java class.This class needs to inherit the `Org.apache.tapestry5.annotations.page` annotation provided by the Tapestry Core framework, and needs to use the@page` annotation to define the URL path of the page.The following is a simple example: import org.apache.tapestry5.annotations.Page; @Page("/my-page") public class MyPage { // The content and logic of the page } In the above example, the annotation specifies the URL path of the page is `/My-Page`.This means that when the user accesses `http: // example.com/my-page`, the page corresponding to the` MyPage` class will be loaded. In addition to the basic URL path, developers can also use path parameters to define more complex URLs.Path parameters can include place occupied symbols in the URL, which will be replaced by specific values at runtime.The following is an example of using path parameters: import org.apache.tapestry5.annotations.Page; import org.apache.tapestry5.annotations.PageActivationContext; @Page("/user/{id}") public class UserPage { @PageActivationContext private String id; // Load user data based on ID and display to the page } In the above example, `@Page ("/User/{id} ")` `Note specifies the URL path of the page`/user/{id} `, where` {id} is a path parameter.When the user visits `http: // example.com/user/123`, the` 123` will be assigned to the `ID` attribute and can use this value on the page. By using the page and URL routing function of the Tapestry Core framework, developers can easily define and manage the relationship between the pages and URLs of the web application.This enables developers to handle the URL request more flexibly and load the corresponding pages and data as needed.