storeroomdeleteaction.java

J2EE电子商务系统开发从入门到精通---基于Struts和Hibernate技术实现

/*
 * StoreroomDeleteAction.java
 *
 * Created on 2006年5月22日, 上午12:31
 */

package action.store;

import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import model.store.hibernate.StoreroomUtil;

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

/**
 *
 * @author Administrator
 * @version
 */

public class StoreroomDeleteAction extends Action {
    
    /* forward name="success" path="" */
    private final static String SUCCESS = "success";
    
    public ActionForward execute(ActionMapping mapping, ActionForm  form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        // 从用户Http请求中得到参数id的值，即当前库房信息的编号
        String id = request.getParameter("id");
        
        // 删除数据库中编号为id的库房信息
        boolean isSuccess = StoreroomUtil.delete(id);
        if (isSuccess == false) {
            return new ActionForward(mapping.getInput());
        }
        
        // 从数据库读取当前所有的库房信息
        List list = StoreroomUtil.findAll();
        if (list == null) {
            return new ActionForward(mapping.getInput());
        }

        // 获得HttpSession缓存
        HttpSession httpSession = request.getSession();
        // 将所有的库房信息存入缓存
        httpSession.setAttribute("storeroomlist", list);
        
        return mapping.findForward(SUCCESS);
    }
}