maction.java

信息发布 发布系统 动态的菜单 和 信息统计

package com.xuntian.material.struts;


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

import org.apache.log4j.Logger;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import com.xuntian.material.bean.UserBean;
import com.xuntian.material.data.dao.Transaction;
import com.xuntian.material.exception.ConnectPoolException;

import com.xuntian.material.util.Constants;
import com.xuntian.material.util.LogUtil;
import java.sql.ResultSet;
import java.sql.SQLException;
/**
 * 写自己的action时,直接继承此action,然后扩展(add,edit,list)等等的方法就行了
 * 
 * @author lip Mar 6, 2006 copyright@xuntian
 */
public abstract class MAction extends DispatchAction {
    protected String defaultMethod;

    /**
     * 实例化log日志对象 调用方法： log.dubug(),log.info(),log.warn(),log.error()
     */
    public static Logger log = LogUtil.getLogger(MAction.class);

    protected ActionForward dispatchMethod(ActionMapping mapping,
            ActionForm form, HttpServletRequest request,
            HttpServletResponse response, String name) throws Exception {
        if (name == null || name.equals("")) {
            name = defaultMethod;
        }
        // befor login
        String servlet = request.getServletPath();
        String action = servlet.substring(1, servlet.length() - 3);
        if (action.equals("Login") && name != null && name.equals("login")) {
            return super.dispatchMethod(mapping, form, request, response, name);
        }

        // after login
        UserBean user = getUser(request);
        if (user == null) {
            return mapping.findForward("welcome");
        }
        if (action.equals("Login") || action.indexOf("Common") >= 0) {
            // Login action escape login method
            // Common... action
            return super.dispatchMethod(mapping, form, request, response, name);
        }
        
        else {
            return super.dispatchMethod(mapping, form, request, response, name);
        }
    }

    public ActionForward successForward(HttpServletRequest request,
            ActionMapping mapping, String message, String url) {
        request.getSession().setAttribute(Constants.FORWARD_MESSAGE, message);
        request.getSession().setAttribute(Constants.FORWARD_URL, url);
        return mapping.findForward(Constants.ACTION_FORWARD_SUCCESS);
    }

    public ActionForward warningForward(HttpServletRequest request,
            ActionMapping mapping, String message) {
        request.getSession().setAttribute(Constants.FORWARD_MESSAGE, message);
        return mapping.findForward(Constants.ACTION_FORWARD_WARNING);
    }

    protected UserBean getUser(HttpServletRequest request) {
        HttpSession session = request.getSession();
        Object object = session.getAttribute(Constants.SESSION_USER);
        if (object instanceof UserBean) {
            return (UserBean) object;
        } else {
            return null;
        }
    }
    public String getItemName(String itemId){
    	String itemName=null;
    	ResultSet rs;
		try {
			rs = Transaction.getInstance().executeQuery("SELECT item_name FROM info_item where 1=1 and item_id="+itemId,null);
			while (rs.next()){
				itemName=rs.getString("item_name");
			}
		} catch (ConnectPoolException ee) {
			ee.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
    	return itemName;
    }
}