addbooknewsaction.java

来自「beginJsp2.0外文书籍源代码」· Java 代码 · 共 42 行

package com.wrox.publish.action;

import com.wrox.publish.om.Book;
import com.wrox.publish.om.BookNews;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

/**
 * Struts Action invoked when the user wants to add a BookNews item.
 * Creates a new BookNews object associated with the Book described
 * by the ActionForm for this action. It is then bound as a session 
 * object under the name given by the ActionMapping parameter.
 */
public class AddBookNewsAction extends Action {
    /** 
     * Invoked by the Struts controller.
     * @param mapping The ActionMapping invoking this Action.
     * @param form The ActionForm. This <em>must</em> be the Book 
     *  associated with this action.
     * @param request The HTTP request.
     * @param response The HTTP response.
     * @return the ActionForward item labelled "success".
     */    
    public ActionForward execute(ActionMapping mapping, 
                                 ActionForm form,
                                 HttpServletRequest request, 
                                 HttpServletResponse response) {
        BookNews news = new BookNews();
        news.setBook((Book)form);
        news.setUser(request.getRemoteUser());
        String bookNewsFormName = mapping.getParameter();
        request.getSession().setAttribute(bookNewsFormName, news);
        return mapping.findForward("success");
    }
}