软件工程专业毕业论文—学生成绩管理系统03917.doc

1、.课 程 设 计 说 明 书设计题目： 学生成绩管理系统 专 业： 软件工程 班级： 设 计 人： 2010年 6 月 18 日*;大学学生课程设计一、软件的功能描述主界面： （1） 信息整理1.录入信息本模块实现录入学生学号、姓名以及各科成绩的功能。并实现了几个完整性约束的判断。点击“下一条”，进入下一条学生信息的录入；点击“取消”，则取消当前的录入操作。当输入格式不正确时：当存储的文件里已有该信息时：2. 修改信息本模块实现对学生信息的修改功能。点击“下一条”，进入下一条学生信息的修改；点击“取消”，则取消当前的修改操作。当修改符合要求时：当输入格式不正确时：当输入的学号不存在时：3. 删

2、除信息本模块实现对学生信息的删除功能。输入要删除的学号，点击“确定”，实现删除；点击“取消”，则取消当前操作。当删除成功时：当输入学号格式不正确时：当记录中没有该信息时：（2） 成绩管理1. 平均成绩数据库平均成绩：2. 成绩降序数据库成绩降序排列（以表格形式输出）：（3） 综合评估1. 柱状图数据结构成绩柱状图（标识属性名称和数量）： 2. 饼形图 Java成绩饼形图（标识属性和百分比）： （4） 查询1. 学生成绩查询 输入学号，以表格形式输出信息 当输入格式不正确时：若输入的学号不存在时：2. 班级成绩查询以表格形式输入整个班级信息情况，以学号升序排列： 二、系统的UML类图图 学生成绩

3、管理UML类图三、系统实现的核心代码第13页1.package StudentManagement;public class StudentManagementTest public static void main(String args)new Management();2.package StudentManagement;import javax.swing.*;import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.*;public

4、class Management extends JFrameprivate static final long serialVersionUID = 1L;JPanel j=new JPanel();private JMenuBar menuBar=new JMenuBar();private JLabel label=new JLabel("请选择一个菜单项");private JMenu menu1=new JMenu("信息整理");private JMenu menu2=new JMenu("成绩管理");private J

5、Menu menu3=new JMenu("综合评估");private JMenu menu4=new JMenu("查询"); private JMenuItem insert=new JMenuItem("插入"); private JMenuItem alter=new JMenuItem("修改"); private JMenuItem delete=new JMenuItem("删除"); private JMenu aver=new JMenu("平均成绩");

6、 private JMenu desc=new JMenu("成绩降序"); private JMenuItem averDB=new JMenuItem("数据库成绩"); private JMenuItem averJava=new JMenuItem("Java成绩"); private JMenuItem averDS=new JMenuItem("数据结构成绩"); private JMenuItem descDB=new JMenuItem("数据库成绩"); private JMe

7、nuItem descJava=new JMenuItem("Java成绩"); private JMenuItem descDS=new JMenuItem("数据结构成绩"); private JMenu volumn=new JMenu("柱状图"); private JMenuItem DBVolumn=new JMenuItem("数据库成绩"); private JMenuItem JavaVolumn=new JMenuItem("Java成绩"); private JMenuIt

8、em DSVolumn=new JMenuItem("数据结构成绩"); private JMenu cake=new JMenu("饼状图"); private JMenuItem DBCake=new JMenuItem("数据库成绩"); private JMenuItem JavaCake=new JMenuItem("Java成绩"); private JMenuItem DSCake=new JMenuItem("数据结构成绩"); private JMenuItem show=ne

9、w JMenuItem("学生成绩查询"); private JMenuItem showAll=new JMenuItem("班级成绩查询"); private Image img=null; Container container=null; public Management() super("成绩管理系统"); container=this.getContentPane(); desc.add(descDB); desc.add(descJava); desc.add(descDS); aver.add(averDB); av

10、er.add(averJava); aver.add(averDS); volumn.add(DBVolumn); volumn.add(JavaVolumn); volumn.add(DSVolumn); cake.add(DBCake); cake.add(JavaCake); cake.add(DSCake); menu1.add(insert); menu1.add(alter); menu1.add(delete); menu2.add(aver); menu2.add(desc); menu3.add(volumn); menu3.add(cake); menu4.add(show

11、); menu4.add(showAll); menuBar.add(menu1); menuBar.add(menu2); menuBar.add(menu3); menuBar.add(menu4); container.add(j); this.setJMenuBar(menuBar); /插入图片 JPanel jp = new JPanel() private static final long serialVersionUID = 1L;public void paintComponent(Graphics g) super.paintComponent(g); img =new

12、ImageIcon("管理.jpg").getImage(); g.drawImage(img,0,0,this); ; jp.add(label); this.add(jp); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); init();/初始化主界面 /插入、修改界面 final JFrame insertFrame=new JFrame("学生信息");insertFrame.setLayout(null);JLabel noLabel =new JLabel("学号"

13、);JLabel nameLabel=new JLabel("姓名"); JLabel DBLabel =new JLabel("数据库成绩"); JLabel javaLabel=new JLabel("java成绩"); JLabel DSLabel=new JLabel("数据结构"); JButton next=new JButton("下一条"); JButton back=new JButton("返回"); final JButton ok=new JButto

14、n("录入"); final JButton alterButton=new JButton("修改"); final JTextField noField =new JTextField(); final JTextField nameField =new JTextField(); final JTextField DBField =new JTextField(); final JTextField javaField =new JTextField(); final JTextField DSField =new JTextField(); fi

15、nal JLabel oklabel=new JLabel(); noLabel.setBounds(10, 20, 100, 25); nameLabel.setBounds(10,80,100,25); DBLabel.setBounds(10,140,100,25); javaLabel.setBounds(10,200,100,25); DSLabel.setBounds(10,260,100,25); noField.setBounds(100,20,200,25); nameField.setBounds(100,80,200,25); DBField.setBounds(100,

16、140,200,25); javaField.setBounds(100,200,200,25); DSField.setBounds(100,260,200,25);alterButton.setBounds(350,50,80,25);ok.setBounds(350,50,80,25);next.setBounds(350, 120, 80, 25);back.setBounds(350, 190, 80, 25); oklabel.setForeground(Color.RED);oklabel.setBounds(80,140,200,50); insertFrame.add(okl

17、abel);insertFrame.add(noLabel);insertFrame.add(nameLabel);insertFrame.add(DBLabel);insertFrame.add(javaLabel);insertFrame.add(DSLabel);insertFrame.add(noField);insertFrame.add(nameField);insertFrame.add(DBField);insertFrame.add(javaField);insertFrame.add(DSField);insertFrame.add(next);insertFrame.ad

18、d(back); insertFrame.setBounds(200, 150, 500, 400);insertFrame.setResizable(false); /录入功能 insert.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) alterButton.setVisible(false);ok.setVisible(true);insertFrame.add(ok);noField.setText("");nameField.setText(&quo

19、t;");DBField.setText("");javaField.setText("");DSField.setText("");insertFrame.setVisible(true););next.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) noField.setText(""); nameField.setText(""); DBField.setText(&

20、quot;"); javaField.setText(""); DSField.setText(""); oklabel.setVisible(false); );ok.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) int flag=0; try BufferedReader brStu = new BufferedReader(new FileReader("E:/Student.txt"); String

21、str=null;while(str=brStu.readLine()!=null)if(str.split("t")0.equals(noField.getText()flag=1; catch (IOException e2) e2.printStackTrace(); if(noField.getText().equals("") |flag=1|nameField.getText().equals("")|DBField.getText().equals("")|javaField.getText().eq

22、uals("")|DSField.getText().equals("")|isLong(noField.getText()=false|isDouble(DBField.getText()=false|isDouble(javaField.getText()=false|isDouble(DSField.getText()=false) if(flag=1) JOptionPane.showMessageDialog(null,"已有该信息！","错误",JOptionPane.WARNING_MESSAGE);

23、 else JOptionPane.showMessageDialog(null,"请重新输入学生信息！","错误",JOptionPane.WARNING_MESSAGE);noField.setText(""); nameField.setText(""); DBField.setText(""); javaField.setText(""); DSField.setText("");/if 判断是否有未输入的空白文本和 输入格式是否为double e

24、lse Student stu=new Student( noField.getText(), nameField.getText(), Double.parseDouble(DBField.getText(),Double.parseDouble(javaField.getText(), Double.parseDouble(DSField.getText(); try int count; BufferedReader br = newBufferedReader(new FileReader("E:/count.txt");count=Integer.parseInt

25、(br.readLine(); BufferedWriter bw = new BufferedWriter(new FileWriter("E:/count.txt");bw.write(""+(+count); bw.flush(); bw.close(); br.close();/记录学生个数 BufferedWriter bwStu = new BufferedWriter(new FileWriter("E:/Student.txt",true);bwStu.write(stu.getNo()+"t"+s

26、tu.getName()+"t" +stu.getDatabase()+"t"+stu.getJava()+"t"+stu.getDS();bwStu.newLine();bwStu.flush();bwStu.close();oklabel.setVisible(true);oklabel.setFont(new Font("",1,36);oklabel.setText("录入成功！"); catch (IOException e1) e1.printStackTrace(); ); bac

27、k.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) insertFrame.setVisible(false);); /修改功能alter.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) ok.setVisible(false);alterButton.setVisible(true);insertFrame.add( alterButton);oklabel.setV

28、isible(false);noField.setText(""); nameField.setText(""); DBField.setText(""); javaField.setText(""); DSField.setText("");insertFrame.setVisible(true); ); alterButton.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) if

29、(noField.getText().equals("")|nameField.getText().equals("") |DBField.getText().equals("") |javaField.getText().equals("") |DSField.getText().equals("") |isLong(noField.getText()=false|isDouble(DBField.getText()=false|isDouble(javaField.getText()=fal

30、se|isDouble(DSField.getText()=false)JOptionPane.showMessageDialog(null,"请重新输入学生信息！", "错误",JOptionPane.WARNING_MESSAGE);noField.setText("");nameField.setText("");DBField.setText("");javaField.setText("");DSField.setText("");/if 判断是

31、否有未输入的空白文本和 输入格式是否为doubleelseStudent stu=new Student(noField.getText(),nameField.getText(), Double.parseDouble(DBField.getText(), Double.parseDouble(javaField.getText(), Double.parseDouble(DSField.getText();try BufferedWriter bwTempStu =new BufferedWriter(new FileWriter("E:/temp.txt");Buff

32、eredReader brStu = new BufferedReader(new FileReader("E:/Student.txt"); String str=null; int flag=0;while(str=brStu.readLine()!=null) if(str.split("t")0.equals(stu.getNo()bwTempStu.write(stu.getNo()+"t"+stu.getName()+"t" +stu.getJava()+"t"+stu.getDat

33、abase() +"t"+stu.getDS();flag=1;else bwTempStu.write(str);bwTempStu.newLine();bwTempStu.flush();bwTempStu.close();brStu.close();BufferedReader brTempStu = new BufferedReader(new FileReader("E:/temp.txt");BufferedWriter bwStu = new BufferedWriter(new FileWriter("E:/Student.tx

34、t");while(str=brTempStu.readLine()!=null) bwStu.write(str);bwStu.newLine();brTempStu.close();bwStu.flush();bwStu.close();if(flag=1)JOptionPane.showMessageDialog(null,"修改成功","提示信息",JOptionPane.INFORMATION_MESSAGE);elseJOptionPane.showMessageDialog(null,"没有该信息，修改失败",

35、"提示信息",JOptionPane.INFORMATION_MESSAGE);noField.setText(""); nameField.setText(""); DBField.setText(""); javaField.setText(""); DSField.setText("");catch (IOException e1)e1.printStackTrace(); );/删除功能delete.addActionListener( new ActionListe

36、ner()public void actionPerformed(ActionEvent e) new Delete(); ); /查询功能show.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) new Search(); );showAll.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) new Desc(0); );/平均成绩averDB.addActionLis

37、tener(new ActionListener()public void actionPerformed(ActionEvent e) tryBufferedReader brStu = new BufferedReader(new FileReader("E:/Student.txt");getAver(brStu,2);brStu.close();catch(IOException e1)e1.printStackTrace(); );averJava.addActionListener(new ActionListener()public void actionPe

38、rformed(ActionEvent e) tryBufferedReader brStu = new BufferedReader(new FileReader("E:/Student.txt");getAver(brStu,3);brStu.close();catch(IOException e1) e1.printStackTrace(); );averDS.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) try BufferedReader brStu

39、 = new BufferedReader(new FileReader("E:/Student.txt");getAver(brStu,4); brStu.close();catch(IOException e1) e1.printStackTrace(););/成绩降序/采用冒泡排序 然后记录数组下标 再让学生对象重新排列 descDB.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) new Desc(1););descJava.addActionListe

40、ner(new ActionListener()public void actionPerformed(ActionEvent e) new Desc(2););descDS.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) new Desc(3); ); /柱状图 DBVolumn.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) try BufferedReader b

41、r = new BufferedReader(new FileReader("E:/Student.txt");int a=getArray(br,2);br.close();volumnTest volumn=new volumnTest(a); volumn.setTitle("数据库成绩柱状图"); volumn.setVisible(true); volumn.setResizable(false);catch(IOException e1)e1.printStackTrace(););JavaVolumn.addActionListener(n

42、ew ActionListener()public void actionPerformed(ActionEvent e) tryBufferedReader br = new BufferedReader(new FileReader("E:/Student.txt");int a=getArray(br,3);br.close();volumnTest volumn=new volumnTest(a); volumn.setTitle("Java成绩柱状图"); volumn.setVisible(true);volumn.setResizable(

43、false);catch(IOException e1)e1.printStackTrace(); );DSVolumn.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) try BufferedReader br = new BufferedReader(new FileReader("E:/Student.txt");int a=getArray(br,4);br.close();volumnTest volumn=new volumnTest(a);volu

44、mn.setTitle("数据结构成绩柱状图");volumn.setVisible(true);volumn.setResizable(false);catch(IOException e1)e1.printStackTrace(); );DBCake.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) try BufferedReader br = new BufferedReader(new FileReader("E:/Student.txt&qu

45、ot;);int a=getArray(br,2);br.close(); floatsum=a0+a1+a2+a3+a4;CakyPlan cakyplan = new CakyPlan();cakyplan.setTitle("数据库成绩饼形图");cakyplan.setVisible(true); cakyplan.setAlwaysOnTop(true); CakyPlan.jPanel.insert("优秀", a0/sum*100); CakyPlan.jPanel.insert("良好", a1/sum*100); C

46、akyPlan.jPanel.insert("中等", a2/sum*100); CakyPlan.jPanel.insert("及格", a3/sum*100); CakyPlan.jPanel.insert("不及格",a4/sum*100); cakyplan.setResizable(false);catch(IOException e1)e1.printStackTrace(); );JavaCake.addActionListener(new ActionListener()public void actionPerfor

47、med(ActionEvent e) try BufferedReader br = new BufferedReader(new FileReader("E:/Student.txt");int a=getArray(br,3);br.close();float sum=a0+a1+a2+a3+a4;CakyPlan cakyplan = new CakyPlan();cakyplan.setTitle("Java成绩饼形图"); cakyplan.setVisible(true); cakyplan.setAlwaysOnTop(true);Caky

48、Plan.jPanel.insert("优秀", a0/sum*100); CakyPlan.jPanel.insert("良好", a1/sum*100);CakyPlan.jPanel.insert("中等", a2/sum*100); CakyPlan.jPanel.insert("及格", a3/sum*100); CakyPlan.jPanel.insert("不及格",a4/sum*100); cakyplan.setResizable(false);catch(IOExceptio

49、n e1)e1.printStackTrace(); );DSCake.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) try BufferedReader br = new BufferedReader(new FileReader("E:/Student.txt");int a=getArray(br,4);br.close();float sum=a0+a1+a2+a3+a4;CakyPlan cakyplan = new CakyPlan(); caky

50、plan.setTitle("数据结构成绩饼形图"); cakyplan.setVisible(true); cakyplan.setAlwaysOnTop(true); CakyPlan.jPanel.insert("优秀", a0/sum*100); CakyPlan.jPanel.insert("良好", a1/sum*100); CakyPlan.jPanel.insert("中等", a2/sum*100); CakyPlan.jPanel.insert("及格", a3/sum*10

51、0); CakyPlan.jPanel.insert("不及格",a4/sum*100); cakyplan.setResizable(false);catch(IOException e1) e1.printStackTrace(); );private boolean isDouble(String num) try Double.parseDouble(num); return true;catch ( NumberFormatException e ) return false; private boolean isLong(String num) try Long

52、.parseLong(num); return true; catch ( NumberFormatException e ) return false; private int getArray(BufferedReader br,int index) int a=new int5; try String str=null; while(str=br.readLine()!=null) if(Double.parseDouble(str.split("t")index)>=90) a0+; else if(Double.parseDouble(str.split(&

53、quot;t")index)>=80) a1+; else if(Double.parseDouble(str.split("t")index)>=70) a2+; else if(Double.parseDouble(str.split("t")index)>=60) a3+; else a4+; catch(IOException e) e.printStackTrace(); return a;private void getAver(BufferedReader br,int index) String str=nul

54、l;double sum=0;int count=0; try while(str=br.readLine()!=null) sum=sum+Double.parseDouble(str.split("t")index);count+;if(index=2)JOptionPane.showMessageDialog(null,"数据库平均成绩：t"+Math.round(sum/count*100)/100.0,"平均成绩",JOptionPane.INFORMATION_MESSAGE);else if(index=3)JOptionPane.showMessageDialog(null,"Java平均成绩：t"+Math.round(sum/count*100)/100.0,"平均成绩",JOptionPane.INFORMATION_MESSAGE);else JOptionPane.showMessageDialog(null,"数据结构平均成绩：t"+Math.round(sum/count*100)/100.0,&qu