中南大学软件工程课程计源代码---银行储蓄系统

package cn.com.csu.command.impl; import java.io.IOException; import java.io.PrintWriter; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Date; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import net.sf.json.JSONArray; import cn.com.csu.command.DispatchCommand; import cn.com.csu.common.DateCaculate; import cn.com.csu.dao.BillDao; import cn.com.csu.dao.SaveKindDao; import cn.com.csu.dao.UserVODao; import cn.com.csu.vo.impl.Bill; import cn.com.csu.vo.impl.BillVO; import cn.com.csu.vo.impl.SavekindVO; import cn.com.csu.vo.impl.UserVO; /** * 基于前端控制+应用控制+命令对象的设计思想，采用了MVC设计模式，而该类是一个命对象组件， * 我将银行储蓄系统的操作方法均写在该类中。 * @author 杨泽敏 */ public class Login extends DispatchCommand { @SuppressWarnings("unchecked") /** * 用户登陆时的方法 */ public String login(HttpServletRequest request, HttpServletResponse response){ HttpSession session = request.getSession(); String user = request.getParameter("user"); //从界面获取用户名 String pw = request.getParameter("password"); //从界面获取用户密码 boolean flag = false; UserVODao dao = new UserVODao(); List<UserVO> list = dao.findByAll(); /** * 通过循环比较用户登陆是否已注册，若已注册则转入个人账户页面 */ for(UserVO vo : list){ if(vo.getUserName().equals(user)&&vo.getPassword().equals(pw)){ flag = true; request.setAttribute("user", user); request.setAttribute("cardid", vo.getCardId()); session.setAttribute("user", user); session.setAttribute("cardid", vo.getCardId()); } } BillDao bd = new BillDao(); List<Bill> result = bd.findByAll(); request.setAttribute("result", result); //将个人账户信息保存在request级别会话中 int amount = 0; for(Bill vo : result){ amount = amount + vo.getAmount(); } request.setAttribute("amount", amount); if(flag == true){ return "/user.jsp"; } else { return "/wrong.html"; } } /** * 开户时的方法 * @param request * @param response * @return */ public String newUser(HttpServletRequest request , HttpServletResponse response){ String user = request.getParameter("name"); String pw = request.getParameter("pw"); String cardId = request.getParameter("card"); UserVO vo = new UserVO(); vo.setUserName(user); vo.setPassword(pw); vo.setCardId(cardId); UserVODao dao = new UserVODao(); dao.add(vo); return "login.html"; } @SuppressWarnings("unchecked") /** * 存款时的方法 */ public String showSave(HttpServletRequest request , HttpServletResponse response){ String user = request.getParameter("user"); String cardId = request.getParameter("cardid"); request.setAttribute("user", user); request.setAttribute("cardId", cardId); SaveKindDao dao = new SaveKindDao(); List<SavekindVO> list = dao.findByAll(); request.setAttribute("list", list); return "/save.jsp"; } @SuppressWarnings("unchecked") /** * 查找利率的方法 */ public void queryIntrest(HttpServletRequest request , HttpServletResponse response){ int kindId = Integer.parseInt(request.getParameter("kindId")); SaveKindDao dao = new SaveKindDao(); List<SavekindVO> list = dao.findById(kindId); JSONArray jsonArray = JSONArray.fromObject(list); response.setContentType("text/xml;charset=UTF-8"); PrintWriter pw = null; try { pw = response.getWriter(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } pw.write(jsonArray.toString()); pw.flush(); pw.close(); } @SuppressWarnings("unchecked") /** * 储户存款时的方法 */ public String save(HttpServletRequest request , HttpServletResponse response){ int kindId = Integer.parseInt(request.getParameter("kid")); Calendar clendar = Calendar.getInstance(); SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");//获取存款日期 Date date = clendar.getTime(); String saveDate = format.format(date); int amount = Integer.parseInt(request.getParameter("amount")); BillVO vo = new BillVO(); vo.setAmount(amount); vo.setKindId(kindId); vo.setSaveDate(saveDate); BillDao dao = new BillDao(); dao.add(vo); BillDao bd = new BillDao(); List<Bill> result = bd.findByAll(); request.setAttribute("result", result); return "/user.jsp"; } /** * 修改用户密码的方法 * @param request * @param response * @return */ public String alter(HttpServletRequest request , HttpServletResponse response){ HttpSession session = request.getSession(); String user = session.getAttribute("user").toString(); String pw = request.getParameter("new"); UserVODao dao = new UserVODao(); dao.update(pw, user); return "login.html"; } @SuppressWarnings("deprecation") /** * 取款时显示利息清单的方法 */ public String showGet(HttpServletRequest request , HttpServletResponse response){ String[] billid = request.getParameterValues("c"); int n = billid.length; int[] billId = new int[n]; for(int i = 0; i < n; i++){ billId[i] = Integer.parseInt(billid[i]); } BillDao dao = new BillDao(); List<Bill> list = new ArrayList<Bill>(); Calendar ca1 = Calendar.getInstance(); Date date = ca1.getTime(); float[] amount = new float[n]; for(int i = 0; i < n; i++){ Bill vo = dao.findById(billId[i]); String savedate = vo.getSaveDate().replace("-", "/"); Date saveDate = new Date(savedate); Calendar ca2 = Calendar.getInstance(); ca2.setTime(saveDate); DateCaculate dc = new DateCaculate(); int days = dc.getBetweenDays(ca1, ca2); float interest = Float.valueOf(vo.getInterestRate())*days*vo.getAmount(); amount[i] = vo.getAmount() + interest; vo.setMoney(amount[i]); vo.setInterest(interest); list.add(vo); } request.setAttribute("list", list); float total = 0; for(int i = 0; i < n; i++){ total = amount[i] + total; } request.setAttribute("total", total); return "/get.jsp"; } @SuppressWarnings("unchecked") /** * 取款时的方法 */ public String get(HttpServletRequest request , HttpServletResponse response){ String[] billid = request.getParameterValues("hid"); int n = billid.length; int[] billId = new int[n]; BillDao dao = new BillDao(); for(int i = 0; i < n; i++){ billId[i] = Integer.parseInt(billid[i]); dao.delete(billId[i]); } BillDao bd = new BillDao(); List<Bill> result = bd.findByAll(); request.setAttribute("result", result); int amount = 0; for(Bill vo : result){ amount = amount + vo.getAmount(); } request.setAttribute("amount", amount); return "/user.jsp"; } }