StrutsStatics 的源码

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 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
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 *
 *  http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.struts2;


/**
 * Constants used by Struts. The constants can be used to get or set objects
 * out of the action context or other collections.
 *
 * <p/>
 *
 * Example:
 * <ul><code>ActionContext.getContext().put(HTTP_REQUEST, request);</code></ul>
 * <p/>
 * or
 * <p/>
 * <ul><code>
 * ActionContext context = ActionContext.getContext();<br>
 * HttpServletRequest request = (HttpServletRequest)context.get(HTTP_REQUEST);</code></ul>
 */
public interface StrutsStatics {

    /**
     * Constant for the HTTP request object.
     */
    public static final String HTTP_REQUEST = "com.opensymphony.xwork2.dispatcher.HttpServletRequest";

    /**
     * Constant for the HTTP response object.
     */
    public static final String HTTP_RESPONSE = "com.opensymphony.xwork2.dispatcher.HttpServletResponse";

    /**
     * Constant for an HTTP {@link javax.servlet.RequestDispatcher request dispatcher}.
     */
    public static final String SERVLET_DISPATCHER = "com.opensymphony.xwork2.dispatcher.ServletDispatcher";

    /**
     * Constant for the {@link javax.servlet.ServletContext servlet context} object.
     */
    public static final String SERVLET_CONTEXT = "com.opensymphony.xwork2.dispatcher.ServletContext";

    /**
     * Constant for the JSP {@link javax.servlet.jsp.PageContext page context}.
     */
    public static final String PAGE_CONTEXT = "com.opensymphony.xwork2.dispatcher.PageContext";

    /** Constant for the PortletContext object */
    public static final String STRUTS_PORTLET_CONTEXT = "struts.portlet.context";

    /**
     * Set as an attribute in the request to let other parts of the framework know that the invocation is happening inside an
     * action tag
     */
    public static final String STRUTS_ACTION_TAG_INVOCATION= "struts.actiontag.invocation";
}