javaEE-课程设计-个人财务管理系统.doc

软 件 学 院课程设计报告书课程名称 JavaEE 课程设计 设计题目 个人财务系统 专业班级 软件工程 学 号 xxxxxxxxx07 姓 名 xxxxx 指导教师 姜彦吉 2011 年 12 月1 设计时间2011年12月12日12月16日2 设计目的JavaEE课程设计是对所学JavaEE与中间件课程的小结，是提高学生对所学知识综合应用能力的一种方式，是集中实践性环节之一。要求同学们对课程中所学习到的知识综合运用，开发有一定规模的Java Web程序。3设计任务设计个人帐务管理系统，要求用户以合法的身份登录后可以对系统进行操作，用户可以查看，添加，删除和计算某段时间内帐务的收入和支出信息等。帐务信息包括收入和支出两种，还有日期和备注。4 设计内容 4.1 设计题目个人财务管理系统 4.1.1系统功能要求用只有拥有合法身份才能登录系统，用以合法身份登录后可以产看帐务信息、添加帐务信息、删除帐务信息、分别统计某个时间段内的收入和支出总额。4.1.2 数据库存储要求 数据的存储要求：收入数额，支出数额，备注，日期4.1.3数据库的设计 表1（数据存储要求）列名称数据类型长度idbigint8incomemoneymoney8costmoneymoney8recordvarchar50timevarchar8图1（数据库存储数据）4.1.4系统构造关系登陆窗口 no密码yes操作界面 查询保存计算帐目删除图2（jsp页面构造）Jsp页面传递参数调用servlet类参数计算方法servlet删除方法servlet查询方法servlet保存方法servlet删除方法dao类查询方法dao类保存方法dao类计算方法dao类图3（Java类功能调用）4.2 Jsp 页面设计4.2.1登录界面 图4（登录界面）代码如下：欢迎登陆个人财务统计系统！ 用户名称:用户密码: 4.2.2登录成功界面 图5（登录成功查询界面） 代码如下： 欢迎登录： 增加帐目明细请输入： 收入数额： 支出数额： 附加备注： 输入日期： 查询帐目明细请点击： 删除帐目信息请如下： 请输入要 删除帐目的日期： 起始Id号: 终止Id号: 4.2.3查询结果界面图6（查询结果界面）4.3Java方法设计4.3.1Servlet类控制增删改操作的servlet类代码设计如下：public class AccountController extends HttpServlet protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException doPost(request,response);protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException int arg=Integer.parseInt(request.getParameter(arg); switch(arg) case 1:this.findAllAccount(request,response); break; case 2:this.saveAllAccount(request,response); break; case 3:this.deleteSomeAccount(request,response); break; case 4:this.caculateAccount(request,response); break; protected void caculateAccount(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException int a=0;int b=0; a=Integer.parseInt(request.getParameter(id); b=Integer.parseInt(request.getParameter(id); AccountDao accountDao=new AccountDao(); List list2=accountDao.caculateAccount(a,b); request.setAttribute(result,list2); RequestDispatcher rdt1=request.getRequestDispatcher(/Result1.jsp); rdt1.forward(request, response);public void findAllAccount(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException AccountDao accountDao=new AccountDao(); List list=accountDao.findAllAccount(); request.setAttribute(accounts, list); RequestDispatcher rdt=request.getRequestDispatcher(/Result.jsp); rdt.forward(request, response); public void saveAllAccount(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException request.setCharacterEncoding(gbk); double incomemoney=0.0; double costmoney=0.0; incomemoney=Double.parseDouble(request.getParameter(incomemoney); costmoney=Double.parseDouble(request.getParameter(costmoney); String record=(String)request.getParameter(record); String time=(String)request.getParameter(time); MyAccount myAccount=new MyAccount(); myAccount.setIncomemoney(incomemoney); myAccount.setCostmoney(costmoney); myAccount.setRecord(record); myAccount.setTime(time); AccountDao accountDao=new AccountDao(); try accountDao.saveAllAccount(myAccount); catch(Exception e) e.printStackTrace(); this.findAllAccount(request,response); public void deleteSomeAccount(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException request.setCharacterEncoding(gbk); String time=request.getParameter(time); MyAccount myAccount=new MyAccount(); myAccount.setTime(time); AccountDao accountDao=new AccountDao(); try accountDao.deleteSomeAccount(myAccount); catch(Exception e) e.printStackTrace(); this.findAllAccount(request, response); 密码验证的Servlet类的代码如下：public class LoginServlet extends HttpServlet public void doGet(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException doGet(req,resp);public void doPost(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException String username=req.getParameter(username); String password=req.getParameter(password); User user=new User(); user.setUsername(username); user.setPassword(password); HttpSession session=req.getSession(); String forward=; if(UserService.CheckLogin(user) forward=/Search.jsp; session.setAttribute(name, username); else forward=/error.jsp; RequestDispatcher rd=req.getRequestDispatcher(forward); rd.forward(req,resp); 4.3.2Dao类密码验证的Dao类代码设计如下：public class UserService public static boolean CheckLogin(User user) if(user.getUsername().equals(lb)&user.getPassword().equals(123) return true; return false; 帐务添加查询计算的Dao类代码设计如下：public class AccountDao private Connection conn; public List findAllAccount() conn=DBCon.getConnection(); String listSQL=select * from myaccount; List list=new ArrayList(); try PreparedStatement psmt=conn.prepareStatement(listSQL); ResultSet rs=psmt.executeQuery(); while(rs.next() MyAccount account=new MyAccount(); account.setId(rs.getInt(1); account.setIncomemoney(rs.getDouble(2); account.setCostmoney(rs.getDouble(3); account.setRecord(rs.getString(4); account.setTime(rs.getString(5); list.add(account); mit(); return list; catch(Exception e) e.printStackTrace(); finally if(conn!=null) try conn.close(); catch(SQLException e) e.printStackTrace(); return list; public boolean saveAllAccount(MyAccount account)throws Exception conn=DBCon.getConnection(); String listSQL=insert into myaccount values(?,?,?,?); PreparedStatement psmt=conn.prepareStatement(listSQL); try psmt.setDouble(1, account.getIncomemoney(); psmt.setDouble(2, account.getCostmoney(); psmt.setString(3, account.getRecord(); psmt.setString(4, account.getTime(); psmt.executeUpdate(); mit(); return true; catch(SQLException e) conn.rollback(); e.printStackTrace(); return false; public boolean deleteSomeAccount(MyAccount account)throws Exception conn=DBCon.getConnection(); String listSQL=delete from myaccount where time=? ; PreparedStatement psmt=conn.prepareStatement(listSQL); try psmt.setString(1, account.getTime(); psmt.executeUpdate(); mit(); return true; catch(SQLException e) conn.rollback(); e.printStackTrace(); return false; public List caculateAccount(int x,int y) conn=DBCon.getConnection(); double incometotal=0.0; double costtotal=0.0; int i=0; List list2=new ArrayList(); try MyAccount account=new MyAccount(); for( i=x;i=y;i+) String listSQL1=selct incomemoney from myaccount where id=i; PreparedStatement psmt1=conn.prepareStatement(listSQL1); ResultSet rs1=psmt1.executeQuery(); psmt1.execute(); incometotal=incometotal+rs1.getDouble(2); String listSQL2=select costmoney from myaccount where id=i; PreparedStatement psmt2=conn.prepareStatement(listSQL2); ResultSet rs2=psmt2.executeQuery(); psmt2.execute(); costtotal=costtotal+rs2.getDouble(3); mit(); account.setIncomemoney(incometotal); account.setCostmoney(costtotal); list2.add(account); return list2; catch(SQLException e) e.printStackTrace(); return list2; 4.3.3数据库连接类数据库连接代码如下：public class DBCon public static Connection getConnection() String url=jdbc:microsoft:sqlserver:/localhost:1433;databaseName=myaccountbase;String user=sa;String psw=sa;Connection conn=null;tryClass.forName(com.microsoft.jdbc.sqlserver.SQLServerDriver);catch(ClassNotFoundException e)e.printStackTrace();tryconn=DriverManager.getConnection(url, user,