dutyservlet.java

功能描述::::jsp实现的销售管理系统

package com.webtier;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import com.domain.DutyVO;
import com.dao.DutyDao;

//职务信息的servlet
public class DutyServlet
    extends HttpServlet {
  private DutyVO vo = null;
  private DutyDao dao = null;
  private int method;

  public void doGet(HttpServletRequest request, HttpServletResponse response) throws
      ServletException, IOException {
    request.setCharacterEncoding("gb2312");
    method = Integer.parseInt(request.getParameter("method"));
    vo = new DutyVO();
    dao = new DutyDao();
    switch (method) {
      case 0: {
        this.dutySelect(request, response); //查询全部信息
        break;
      }
      case 1: {
        this.dutyInsert(request, response); //添加职务信息
        break;
      }
      case 2: {
        this.dutyDelete(request, response); //删除信息
        break;
      }
      case 3:{
         this.dutySelectOne(request,response);//条件查询
                 break;
      }
      case 4:{
        this.dutyUpdate(request,response);//修改操作
                break;
      }
    }
  }
//修改操作
  public void dutyUpdate(HttpServletRequest request,
                           HttpServletResponse response) throws
        ServletException, IOException {
      String name = request.getParameter("name");

        vo.setId(Integer.valueOf(request.getParameter("id")));
        vo.setDuty_name(name);
        vo.setDuty_remark(request.getParameter("remark"));
        dao.dutyUpdate(vo);
        request.setAttribute("success", "修改职务信息成功！！！");

      RequestDispatcher requestDispatcher = request.getRequestDispatcher(
          "dataDuty/success.jsp");
      requestDispatcher.forward(request, response);
  }



  //条件查询
  public void dutySelectOne(HttpServletRequest request,
                            HttpServletResponse response) throws
      ServletException, IOException {
    request.setAttribute("duty",
                         dao.dutySelectOne(request.getParameter("number")));
    RequestDispatcher requestDispatcher = request.getRequestDispatcher(
        "dataDuty/dutyUpdate.jsp");
    requestDispatcher.forward(request, response);
  }

//删除职务信息的操作
  public void dutyDelete(HttpServletRequest request,
                         HttpServletResponse response) throws
      ServletException, IOException {
    dao.dutyDelete(Integer.valueOf(request.getParameter("id")));
    request.setAttribute("success", "删除职务信息成功");
    RequestDispatcher requestDispatcher = request.getRequestDispatcher(
        "dataDuty/success.jsp");
    requestDispatcher.forward(request, response);
  }

  //添加职务信息的操作
  public void dutyInsert(HttpServletRequest request,
                         HttpServletResponse response) throws
      ServletException, IOException {
    String url = null;
    String operate = request.getParameter("operate");
    if (operate == null) {
      url = "dataDuty/dutyInsert.jsp";
    }
    else {
      String number = "noNumber";
      String name = request.getParameter("name");


      if (dao.dutySelectName(name) != null) {
        request.setAttribute("success", "该名称已经存在！！！");
      }
      else {
        vo.setDuty_number(number);
        vo.setDuty_name(name);
        vo.setDuty_remark(request.getParameter("remark"));
        dao.dutyInsert(vo);
        DutyVO duty = dao.dutySelectOne(number);
        dao.dutyUpdateNumber("duty-" + duty.getId(), duty.getId());
        request.setAttribute("success", "添加职务信息成功！！！");
      }
      url = "dataDuty/success.jsp";
    }
    RequestDispatcher requestDispatcher = request.getRequestDispatcher(url);
    requestDispatcher.forward(request, response);
  }

//查询全部信息
  public void dutySelect(HttpServletRequest request,
                         HttpServletResponse response) throws
      ServletException, IOException {
    List list = dao.dutySelect();
    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 % 5 == 0) {
      maxPage = maxPage / 5;
    }
    else {
      maxPage = maxPage / 5 + 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);
    RequestDispatcher requestDispatcher = request.getRequestDispatcher(
        "dataDuty/dutySelect.jsp");
    requestDispatcher.forward(request, response);
  }

  public void doPost(HttpServletRequest request, HttpServletResponse response) throws
      ServletException, IOException {
    doGet(request, response);
  }

}