userdelsubaction.java

来自「一个基本的图书馆管理系统」· Java 代码 · 共 77 行

package c18.struts.action;

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

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import c18.service.UserService;
import c18.service.UserServiceImpl;
import c18.session.UserSession;
import c18.struts.action.exception.ActionException;
import c18.struts.action.exception.ExistReferActionException;
import c18.struts.action.exception.NotFindActionException;
import c18.util.ConvertUtil;

/** 
 * 用户删除Action类
 * @struts.action path="/user_delsub" scope="request"
 * @struts.action-forward name="success" path="/optresult.jsp"
 */
public class UserDelSubAction extends Action {
    private static final Log log = LogFactory.getLog(UserDelSubAction.class);
    

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		//判断是否管理员
		if(!UserSession.isManager(request, response)){
			return mapping.findForward("/main");
		}
		
		//得到用户号
		int userNo =0;
		String suserNo = request.getParameter("userNo");
		if(suserNo != null && !suserNo.equals("")){
			userNo = ConvertUtil.convertInt(suserNo);
		}
		
		try {
			UserService userservice = new UserServiceImpl(); 
			//删除
			userservice.delUser(userNo);
		} catch (ActionException e) {
			//用户信息不存在
			if(e instanceof NotFindActionException){
				request.setAttribute("errorString", e.getExceptionString());
				
				log.debug(e.getExceptionString(), e);
				return mapping.findForward("success");
			}else
			//存在用户信息相关引用，不能删除用户
			if(e instanceof ExistReferActionException){
				request.setAttribute("errorString", e.getExceptionString());
				
				log.debug(e.getExceptionString(), e);
				return mapping.findForward("success");
			}
			log.error(e);
		}
		
		return mapping.findForward("success");
	}

}