软件工程专业毕业论文—学生成绩管理系统03917.doc

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 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 jmenu 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); 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 jmenuitem 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 jmenuitem 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=new 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); aver.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); 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 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);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 jbutton(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(); final 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(100,140,200,25); 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(oklabel);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.add(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();dbfield.settext();javafield.settext();dsfield.settext();insertframe.setvisible(true););next.addactionlistener(new actionlistener()public void actionperformed(actionevent e) nofield.settext(); namefield.settext(); dbfield.settext(); 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 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().equals()|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); 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 else 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(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+stu.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(); ); back.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.setvisible(false);nofield.settext(); namefield.settext(); dbfield.settext(); javafield.settext(); dsfield.settext();insertframe.setvisible(true); ); alterbutton.addactionlistener(new actionlistener()public void actionperformed(actionevent e) if(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()=false|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);bufferedreader 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.getdatabase() +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.txt);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,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 actionlistener()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.addactionlistener(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 actionperformed(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 = 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.addactionlistener(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 br = 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(new 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(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);volumn.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);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); 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(ioexception e1)e1.printstacktrace(); );javacake.addactionlistener(new actionlistener()public void actionperformed(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);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*100); cakyplan.jpanel.insert(不及格,a4/sum*100); cakyplan.setresizable(false);catch(ioexception 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(); cakyplan.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*100); 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.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(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=null;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,平均成绩,joptionpane.informati