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https://issues.apache.org/jira/browse/WW-5791?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lukasz Lenart reassigned WW-5791:
---------------------------------
Assignee: Lukasz Lenart
> Struts Boot: run a Struts application from main() with an embedded container
> and programmatic action registration
> -----------------------------------------------------------------------------------------------------------------
>
> Key: WW-5791
> URL: https://issues.apache.org/jira/browse/WW-5791
> Project: Struts 2
> Issue Type: New Feature
> Components: Core
> Reporter: Lukasz Lenart
> Assignee: Lukasz Lenart
> Priority: Major
> Fix For: 7.5.0
>
>
> h2. Goal
> Give newcomers a working Struts application with almost no setup: add one
> dependency, write an action class, run {{main()}}, see the page. No
> {{web.xml}}, no {{struts.xml}}, no external servlet container. Standalone —
> no Spring dependency.
> h2. Minimal scope
> * New {{struts-boot-starter}} artifact pulling in core and an embedded
> servlet container (Tomcat), registering {{StrutsPrepareAndExecuteFilter}} in
> code.
> * {{StrutsBoot.run(App.class, args)}} entry point; the application class
> implements {{StrutsBootApplication}}.
> * Fluent action registration, fed into the configuration through a single
> {{ConfigurationProvider}} built on {{PackageConfig}} / {{ActionConfig}} /
> {{ResultConfig}} builders. No Convention plugin, no classpath scanning.
> {code:java}public class HelloApp implements StrutsBootApplication {
> public static void main(String[] args) {
> StrutsBoot.run(HelloApp.class, args);
> }
> @Override
> public void actions(ActionRegistry actions) {
> actions.action("hello", HelloAction.class)
> .success("hello.ftl");
> actions.namespace("/admin", admin -> {
> admin.action("users", UserAction.class)
> .method("list")
> .success("admin/users.ftl");
> admin.action("users/save", UserAction.class)
> .method("save")
> .httpMethods(POST)
> .result("input", "admin/userForm.ftl")
> .redirectAction("success", "users");
> });
> }
> }
> {code}
> * Defaults: each namespace is a package extending {{struts-default}}; top
> level is namespace {{""}}; {{method}} defaults to {{execute}};
> {{success(path)}} is shorthand for {{result("success", path)}}; interceptors
> default to {{defaultStack}}, overridable per action or namespace by stack
> name; {{httpMethods(...)}} maps to the http-method restriction from WW-3717.
> * Views: FreeMarker only, chosen by {{.ftl}} extension, resolved from
> {{classpath:/templates/}}.
> * Configuration: the existing {{struts.properties}}; Boot-only settings
> (port, context path) under a {{struts.boot.*}} prefix. Not
> {{application.properties}}, to avoid clashing with Spring Boot.
> * A {{struts.xml}} on the classpath is still loaded alongside the registry.
> * Runnable fat jar via a Maven plugin.
> h2. Parked for later
> * Running an existing Struts WAR as a self-contained jar (migration path).
> * JSP views in the embedded container.
> * Gradle plugin.
> * Alternative containers (Jetty, Undertow).
> * Fluent definition of custom interceptor stacks.
> * Global results, global exception mappings, wildcard actions in the registry.
> * Optional bridge to Convention plugin annotations.
> * Dev-mode reload of templates and registry.
> * Project generator / quick-start archetype.
> * Health and info endpoints.
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