javaEE学生基本信息标准管理系统.doc

软 件 学 院课程设计汇报书课程名称 Java EE 课程设计 设计题目 学生基础信息管理系统 专业班级 学 号 姓 名 指导老师 年 12 月1 设计时间/12/12-/12/162 设计目标JavaEE课程设计是对所学JavaEE和中间件课程小结，是提升学生对所学知识综合应用能力一个方法，是集中实践性步骤之一。要求同学们对课程中所学习到知识综合利用，开发有一定规模Java Web程序。3设计任务（一）必备功效说明：（1）功效描述：用户以正当身份登录系统后，才能进行全部操作；登录系统时，有两种权限：管理员权限和一般用户权限。管理员用户能够添加、查看、修改和删除学生信息，一般用户只能添加、查看和修改学生信息；（2）添加学生信息：正当用户能够添加学生信息（包含学号、姓名、性别、年纪、所在班级、手机号、家庭住址）；（3）查看学生信息：正当用户能够查看学生信息；（4）修改学生信息：正当用户能够修改学生信息；（5）删除学生信息：正当用户能够删除学生信息。4 设计内容 4.1 抽象数据类型定义4.1.1程序所建立包com.Student.daocom.Student.domaincom.Student.servicecom.Student.servletcom.Student.util4.1.2程序所需要导入包import java.sql.*;import java.util.A*t;import java.io.*;import javax.servlet.*;import javax.servlet.http.*;4.2数据库部分实现4.2.1 逻辑设计1.关系模式课程信息（学号、姓名、性别、年纪、所在班级、手机号、家庭住址）2. 系统表表1 数据包course列名数据类型长度是否为空含义idint4N学生编码，主键，自动增加sonVarchar50Y学号namevarchar50Y姓名sexvarchar50Y性别ageint4Y年纪sclassvarchar50Y所在班级phonenumbervarchar50Y手机号addressvarchar50Y家庭住址4.3程序步骤开始图登录界面输入用户名称和用户密码是否成功成功页面错误页面对数据库进行操作显示课程信息NY结束图1 程序步骤图4.4 系统代码实现 1.页面实现本程序有四个关键页面：“login.jsp”，“success.jsp”“error.jsp”，“showallstudents.jsp”，“savaStudent”和“deleteStudent”， “login.jsp”用于用户登录，它关键代码以下： My JSP login.jsp starting page 用户名称： 用户密码： “success.jsp”当登录成功时，跳转到本页面，然后超链接到显示页面，它关键代码以下： 欢迎管理员进入管理页面 “error.jsp”当登录失败时，跳转到本页面，然后超链接到登录页面，它关键代码以下： 用户名密码错误！重新登录 “showallstudents.jsp”用于显示全部课程信息和学分统计，它关键代码以下： 学号 姓名 性别 年纪 所在班级 手机号 家庭住址 添加学生信息 修改学生信息 删除学生信息 “savaStudent.jsp”用于填写要保留课程信息，它关键代码以下： 保留页面 编号: 学号: 姓名: 性别: 年纪: 所在班级: 手机号: 家庭住址: 2.工具类实现工具类名为“DBConnection”，该类用于取得数据库连接，它实现代码以下：package com.Student.util;import java.sql.Connection;import java.sql.DriverManager;import java.sql.SQLException;public class DBConnection public static Connection getConnection()final String driverName=com.microsoft.jdbc.sqlserver.SQLServerDriver;final String url=jdbc:microsoft:sqlserver:/localhost:1433;databasename=mydb;tryClass.forName(driverName);catch(ClassNotFoundException e)e.printStackTrace();tryConnection con=DriverManager.getConnection(url,sa,sa);con.setAutoCommit(false);return con;catch(SQLException e)e.printStackTrace();return null;3.实体类实现实体类类名有“User”和“Student”，“User”类拥有用户名称和用户密码私有属性及各个属性set、get方法，它实现代码以下：package com.Student.domain;public class User private String name;private String password;public String getName() return name;public void setName(String name) this.name = name;public String getPassword() return password;public void setPassword(String password) this.password = password; “Student”类拥有部分代表学生信息私有属性和各个属性set、get方法，它实现代码以下：package com.Student.domain;public class Student private int id;private String sno;private String name;private String sex;private int age;private String sclass;private String phonenumber;private String address;public int getId() return id;public void setId(int id) this.id = id;public String getSno() return sno;public void setSno(String sno) this.sno = sno;public String getName() return name;public void setName(String name) this.name = name;public String getSex() return sex;public void setSex(String sex) this.sex = sex;public int getAge() return age;public void setAge(int age) this.age = age;public String getSclass() return sclass;public void setSclass(String sclass) this.sclass = sclass;public String getPhonenumber() return phonenumber;public void setPhonenumber(String phonenumber) this.phonenumber = phonenumber;public String getAddress() return address;public void setAddress(String address) this.address = address;4.DAO类实现DAO类类名为“StudentsDAO”，该类使用JDBC技术实现，用于和数据库交互，进行相关增、删、改、查操作，它实现代码以下：package com.Student.dao;import java.sql.Connection;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;import java.util.ArrayList;import java.util.List;import com.Student.domain.Student;import com.Student.util.DBConnection;public class StudentsDAO public List getAllStudents()Connection con=DBConnection.getConnection();List list=new ArrayList();tryPreparedStatement ps=con.prepareStatement(select * from students); ResultSet rs=ps.executeQuery(); while(rs.next() Student student=new Student(); student.setId(rs.getInt(id); student.setSno(rs.getString(sno); student.setName(rs.getString(name); student.setSex(rs.getString(sex); student.setAge(rs.getInt(age); student.setSclass(rs.getString(sclass); student.setPhonenumber(rs.getString(phonenumber); student.setAddress(rs.getString(address); list.add(student); return list;catch(SQLException e)e.printStackTrace();return null;public boolean saveStudent(Student student) throws ExceptionConnection con=DBConnection.getConnection();PreparedStatement ps=null;try ps=con.prepareStatement(insert into students values(?,?,?,?,?,?,?,?);ps.setInt(1, student.getId();ps.setString(2, student.getSno();ps.setString(3, student.getName();ps.setString(4, student.getSex();ps.setInt(5, student.getAge();ps.setString(6, student.getSclass();ps.setString(7, student.getPhonenumber();ps.setString(8, student.getAddress();ps.executeUpdate();mit();return true;catch(SQLException e)e.printStackTrace();finallycon.close();ps.close();return false;public void deleteStudent(int sid)Connection con=DBConnection.getConnection();tryPreparedStatement ps=con.prepareStatement(delete from students where id=?);ps.setInt(1, sid);ps.executeUpdate();mit();con.close();catch(Exception e)e.printStackTrace(); 5.控制器类实现控制器类类名有“LoginServlet”、“ListAllStudentServlet” “SaveServlet”类和“DeleteServlet”类，它们全部继承了“HttpServlet”，用于接收页面表单中数据和将DAO类传输数据发送到页面中和控制页面转向，它们实现代码分别以下：public class LoginServlet extends HttpServlet public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException User user=new User(); user.setName(request.getParameter(username); user.setPassword(request.getParameter(password); UserService userService=new UserService(); if(userService.checkLogin(user) HttpSession session=request.getSession(); session.setAttribute(username,user.getName(); request.getRequestDispatcher(/success.jsp).forward(request, response); else if(userService.checkLogin(user) HttpSession session=request.getSession(); session.setAttribute(username,user.getName(); request.getRequestDispatcher(/success1.jsp).forward(request, response); request.getRequestDispatcher(/error.jsp).forward(request, response); public class ListAllStudentServlet extends HttpServlet public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException StudentsService studentService=new StudentsService();List list=studentService.getAllStudents();request.setAttribute(allstudents, list);request.getRequestDispatcher(/showallstudents.jsp).forward(request, response);public class SaveServlet extends HttpServlet public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException doPost(request,response);public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException request.setCharacterEncoding(gbk);int id=Integer.parseInt(request.getParameter(id);String sno=(String)request.getParameter(sno);String name=(String)request.getParameter(name);String sex=(String)request.getParameter(sex);int age=Integer.parseInt(request.getParameter(age);String sclass=(String)request.getParameter(sclass);String phonenumber=(String)request.getParameter(phonenumber);String address=(String)request.getParameter(address);Student student=new Student();student.setId(id);student.setSno(sno);student.setName(name);student.setSex(sex);student.setAge(age);student.setSclass(sclass);student.setPhonenumber(phonenumber);student.setAddress(address);StudentsDAO studentDao=new StudentsDAO();trystudentDao.saveStudent(student);catch(Exception e)e.printStackTrace();studentDao.getAllStudents();StudentsService studentService=new StudentsService();List list=studentService.getAllStudents();request.setAttribute(allstudents, list);request.getRequestDispatcher(/showallstudents.jsp).forward(request, response); public class DeleteServlet extends HttpServlet public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException doPost(request,response);public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException int id=Integer.parseInt(request.getParameter(id);StudentsDAO studentsDao=new StudentsDAO();trystudentsDao.deleteStudent(id);catch(Exception e)e.printStackTrace();StudentsService studentService=new StudentsService();List list=studentService.getAllStudents();request.setAttribute(allstudents, list);request.getRequestDispatcher(/showallstudents.jsp).forward(request, response); 6.Servic类实现Service类类名有“UserServiec”和“StudentsServiece”类，是用于控制器类和DAO类之间数据传输连接，它们实现代码分别以下：public class UserService public boolean checkLogin(User user)if(user.getName().equals(111)&user.getPassword().equals(111)return true;elsereturn false;public class StudentsService public List getAllStudents()StudentsDAO studentsDAO=new StudentsDAO();return studentsDAO.getAllStudents(); 7.配置“web.xml”文件在“web.xml”文件中配置元素和元素，配置关键代码以下： LoginServlet com.Student.servlet.LoginServlet ListAllStudentServlet com.Student.servlet.ListAllStudentServlet SaveServlet com.Student.servlet.SaveServlet DeleteServletcom.Student.servlet.DeleteServlet LoginServlet /servlet/LoginServlet ListAllStudentServlet /servlet/ListAllStudentServlet SaveServlet /servlet/SaveServlet DeleteServlet /servlet/DeleteServlet 4.5测试结果4.5.1登录测试结果 图2 登录页面图3 登录成功页面图4 登录失败页面4.5.2显示测试结果 图5 显示课程信息4.5.3添加测试结果 图6 添加页面图7 添加成功后课程信息4.5.4删除测试结果 图8 删