manageraction.java

一个简单博客的软件项目,可以给初学者一个引导

package com.wy.webtier;


import org.apache.struts.action.*;
import javax.servlet.http.*;
import com.wy.domain.ManagerForm;
import com.wy.dao.ManagerDao;


import java.util.*;


//后台管理员的Action
public class ManagerAction
    extends Action {
  private ManagerDao dao = null;
  private int action;
  private HttpSession session = null;
  public ActionForward execute(ActionMapping mapping,
                               ActionForm form,
                               HttpServletRequest request,
                               HttpServletResponse response) {

    dao = new ManagerDao();
    action = Integer.parseInt(request.getParameter("action"));
    switch (action) {
      case 0: {
        return managerCheck(mapping, form, request, response); //判断管理员登录后台
      }
      case 1: {
        return managerSelect(mapping, form, request, response); //查询所有的管理员信息
      }
      case 3: {
        return managerInsert(mapping, form, request, response); //添加管理员信息
      }
      case 4: {
        return managerDelete(mapping, form, request, response); //删除管理员信息
      }
      case 8: {
        return managerUpdatePassword(mapping, form, request, response); //转向修改密码的页面
      }
    }
    throw new java.lang.UnsupportedOperationException(
        "Method $execute() not yet implemented.");
  }

//修改管理员密码
  public ActionForward managerUpdatePassword(ActionMapping mapping,
                                             ActionForm form,
                                             HttpServletRequest request,
                                             HttpServletResponse response) {
    ManagerForm managerForm = (ManagerForm) form;
    managerForm.setAccount(request.getParameter("account"));
    managerForm.setPassword(request.getParameter("password"));
    dao.updateManagerPassword(managerForm);
    request.setAttribute("reslut", "修改后台管理员密码成功，请重新登录！！！");
    return mapping.findForward("managerUpdatePassword");
  }






  //删除管理员信息
  public ActionForward managerDelete(ActionMapping mapping,
                                     ActionForm form,
                                     HttpServletRequest request,
                                     HttpServletResponse response) {
    dao.deleteManager(Integer.valueOf(request.getParameter("id")));
    request.setAttribute("reslut", "删除此用户名成功！！！");
    return managerSelect(mapping,form,request,response);
  }

//添加管理员信息
  public ActionForward managerInsert(ActionMapping mapping,
                                     ActionForm form,
                                     HttpServletRequest request,
                                     HttpServletResponse response) {
    ManagerForm managerForm = (ManagerForm) form;
 
    ManagerForm manager = dao.selectOne(managerForm.getAccount());
    if (manager == null || manager.equals("")) {
       dao.insertManager(managerForm);
       return managerSelect(mapping,form,request,response);
    }else {
      request.setAttribute("reslut", "此用户名已经存在！！！");
      return mapping.findForward("managerInsert");
    }
  }



//查询所有的管理员信息
  public ActionForward managerSelect(ActionMapping mapping,
                                     ActionForm form,
                                     HttpServletRequest request,
                                     HttpServletResponse response) {
    List list = dao.selectManager();
    int pageNumber = list.size(); //计算出有多少条记录
    int maxPage = pageNumber; //计算有多少页数
    String number = request.getParameter("i");
    if (maxPage % 7 == 0) {
      maxPage = maxPage / 7;
    }
    else {
      maxPage = maxPage / 7 + 1;
    }
    if (number == null) {
      number = "0";
    }
    request.setAttribute("number", String.valueOf(number));
    request.setAttribute("maxPage", String.valueOf(maxPage));
    request.setAttribute("pageNumber", String.valueOf(pageNumber));

    request.setAttribute("list", list);
    return mapping.findForward("managerSelect");
  }

  //判断管理员登录后台
  public ActionForward managerCheck(ActionMapping mapping,
                                    ActionForm form,
                                    HttpServletRequest request,
                                    HttpServletResponse response) {
    String account =request.getParameter("account");
    ManagerForm managerForm= dao.selectOne(account);
    if (managerForm == null) {
      request.setAttribute("result", "您输入的账号不存在！！！");
      return mapping.findForward("checkResult");
    }
    else if (!managerForm.getPassword().equals(request.getParameter("password"))) {
      request.setAttribute("result", "您输入的密码不存在！！！");
      return mapping.findForward("checkResult");
    } else {
      request.setAttribute("manager", managerForm);
      return mapping.findForward("checkResult");
    }
  }
}