融合後的structs，也是2.0版

Key features of the framework include:

Core

• Pluggable framework architecture that allows request lifecycles to be customized for each action.外掛的底層，每一個行動有客製的循環
• Flexible validation framework that allows validation rules to be decoupled from action code.延展性高的有效性底層，和每一個行動不用綁在一起
  
• Hierarchical approach to internationalization that simplifies localizing applications.簡化在地化的程式
• Automatic type conversion that transparently maps values from HTTP to native Java data objects, solving one of the most tedious efforts when creating web applications.形別轉換，減少人力浪費
• Integrated dependency injection engine that manages component lifecycle and dependencies. (By default, the framework utilizes Spring for dependency injection.)也是借用春天來依賴相依注射
• Modular configuration files that use packages and namespaces to simplify managing large projects with hundreds of actions.模組化的設定檔
• Java 5 annotations that reduce configuration overhead. (Java 1.4 is the minimum platform.)註解檔減少設定檔的重擔

View

• Reusable user interface tags that allow for easy component-oriented development using themes and templates. Bundled tags ranges from simple text fields to advanced tags like date pickers and tree views.重用性高的標千，允許簡單的元件導件的建構，使用佈景和樣板，整合了簡單的輸入欄位和進階的時間欄位和樹狀展示
• JSTL-compatible expression language (OGNL) that exposes properties on multiple objects as if they were a single JavaBean.標千語言相容，把物件的屬性也展示出來
• Pluggable Result Types that support multiple view technologies, including JSP, FreeMarker, Velocity, PDF, and JasperReports.外掛的回傳結果型別，支援多種展示的技術，如JSP/FM/V/PDF/JP
• Optional AJAX theme that simplifes creating interactive web applications.可選擇的
• Optional Interceptor plugins that can execute long-running queries in the background, prevent multiple form submissions, or handle custom security schemes.可選擇的攔截器

Other

• Easy integration with other popular products, including Hibernate, Spring, SiteMesh, and JSTL.簡單的和有名的框架整合
• Distributed under the business-friendly Apache License 2.0.

對商業應用友善的阿帕契2.0