学生成绩管理系统
1. 团队人员及任务分配情况
| 姓名 | 身份 | 任务分配 |
|---|---|---|
| 林洁颖 | 组长 | 功能4.5.7.8逻辑代码＋整合代码 |
| 宋思坡 | 组员 | 所有GUI界面框架 |
| 漆靖 | 组员 | 功能1.2.3逻辑代码＋团队博客 |
| 任务详情： |
2. 所参考的其他项目的博客与链接
https://www.cnblogs.com/kawajiang/p/7062407.html
3. 项目git地址
https://gitee.com/palose/stusystem
4. git提交记录
5. 前期调查
通过在网上浏览相关资料，以及参考往届学长学姐的课设博客后，我们对学生成绩管理系统的功能有了初步的构思：将用户分为老师与学生两类，在登入界面时选择。登入后，学生仅能进行查询信息与成绩操作；而老师可以进行增加、删除、查询、修改等操作，还可以查看各科目班级平均值，总成绩以及班级总成绩平均值，并能根据需要将查看到的结果输出到外部文件中，生成学生学习情况报表。在查询功能中，既可以通过学号查询，也可以通过姓名查询。
6. 项目功能架构及流程图
6.1功能架构图：
6.2功能流程图：
7. 面向对象设计包图与类图
7.1 包图
7.2 UML类图（仅展示关键类）
8. 项目运行截图
生成学生学习情况报表：
生成测试数据并导出为txt文件：
将生成的报表导出为Excel表格：
9. 项目关键模块及其代码
学生信息操作模块
提供对学生信息的查找、修改以及增加和删除学生的功能，同时还可以生成班级学生成绩情况报表。
public boolean addStudent(Student student) {
Connection conn = null;
Statement stat = null;
PreparedStatement pstmt =null;
//在数据库中插入学生姓名、学号、性别、出生年月日
if(searchStuByStuId(student.getStudentId())!=null){
return false;
}
String sql = "insert into test.student (stu_id,stu_name,stu_genda,stu_birthday,class_name,stu_pwd) values(?,?,?,?,?,?)";
try {
conn = JDBCUtil.getConnection();
stat = conn.createStatement();
pstmt = conn.prepareStatement(sql);
pstmt.setString(1,student.getStudentId());
pstmt.setString(2, student.getName());
pstmt.setString(3,student.getGenda());
pstmt.setDate(4, new java.sql.Date( student.getBirthday().getTime()));
pstmt.setString(5,student.getClassName());
pstmt.setString(6,student.getStudentPwd());
int updateRow= pstmt.executeUpdate();
//获得受sql语句影响的行数
return updateRow>0;
} catch (SQLException throwables) {
throwables.printStackTrace();
} finally {
JDBCUtil.closeConnection(conn);
}
return false;
}
public Student searchStuByStuId(String studentId) {
Connection conn = null;
Statement stat = null;
PreparedStatement pstmt =null;
ResultSet rs=null;
Student student=null;
String sql="select * from test.student where stu_id = ?";
try {
conn = JDBCUtil.getConnection();
stat = conn.createStatement();
pstmt = conn.prepareStatement(sql);
pstmt.setString(1,studentId);
rs= pstmt.executeQuery();
//使用gui后此句不用
if(rs.next()){
student=new Student(studentId,rs.getString("stu_name"),rs.getString("math_score"),rs.getString("java_score"),rs.getString("PE_score"));
}
} catch (SQLException throwables) {
throwables.printStackTrace();
} finally {
JDBCUtil.realeaseAll(rs,stat,conn);
}
return student;
}
public boolean addStuScore(String studentId, String courseName, String score) {
Connection conn = null;
Statement stat = null;
PreparedStatement pstmt =null;
String sql="update test.student set "+courseName+"_score = ? where stu_id = ?";
int updateRow=0;
try {
conn = JDBCUtil.getConnection();
pstmt= conn.prepareStatement(sql);
pstmt.setString(1,score);
pstmt.setString(2,studentId);
updateRow=pstmt.executeUpdate();
if(updateRow>0){
return true;
}
} catch (Exception e) {
e.printStackTrace();
} finally {
JDBCUtil.closeConnection(conn);
}
return false;
}
public List<Student> searchStuByStuName(String studentName) {
List<Student> studentList=new ArrayList<>();
Connection conn = null;
ResultSet rs = null;
PreparedStatement pstmt =null;
//模糊查找语句,like，%是可能还有多个字符
String sql = "SELECT * From test.student where stu_name like ?";
try {
conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setString(1,"%"+studentName+"%");
rs = pstmt.executeQuery();
//之后在gui页面中出现提示
while (rs.next()) {
Student student=new Student();
student=new Student(rs.getString("stu_id"),rs.getString("stu_name"),rs.getString("math_score"),rs.getString("java_score"),rs.getString("PE_score"));
studentList.add(student);
}
} catch (
SQLException sqle) {
sqle.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
JDBCUtil.realeaseAll(rs, pstmt, conn);
}
return studentList;
}
public List<Student> generateClassStuReport(String className,String filePath) {
Connection conn = null;
PreparedStatement pstmt =null;
ResultSet rs = null;
List<Student> descOrderStudentList=new ArrayList<>();
double mathScoreAvg=0.0;
double javaScoreAvg=0.0;
double PEScoreAvg=0.0;
double totalScoreAvg=0.0;
DecimalFormat df =new DecimalFormat("#.00");
String sql="select * from test.student where class_name = ?";
try {
conn = JDBCUtil.getConnection();
pstmt= conn.prepareStatement(sql);
pstmt.setString(1,className);
rs= pstmt.executeQuery();
while(rs.next()){
String mathScore=rs.getString("math_score");
String javaScore=rs.getString("java_score");
String PEScore=rs.getString("PE_score");
Student student=new Student(rs.getString("stu_id"),rs.getString("stu_name"),mathScore,javaScore,PEScore);
student.setClassName(className);
mathScoreAvg+=Double.valueOf(mathScore);
javaScoreAvg+=Double.valueOf(javaScore);
PEScoreAvg+=Double.valueOf(PEScore);
totalScoreAvg+=Double.valueOf(mathScore)+Double.valueOf(javaScore)+Double.valueOf(PEScore);
student.setTotalScore(df.format(Double.valueOf(mathScore)+Double.valueOf(javaScore)+Double.valueOf(PEScore)));
System.out.println(student);
descOrderStudentList.add(student);
}
mathScoreAvg/=descOrderStudentList.size();
javaScoreAvg/=descOrderStudentList.size();
PEScoreAvg/=descOrderStudentList.size();
totalScoreAvg/=descOrderStudentList.size();
for (Student stu:
descOrderStudentList) {
stu.setMathScoreAvg(df.format(mathScoreAvg));
stu.setJavaScoreAvg(df.format(javaScoreAvg));
stu.setPEScoreAvg(df.format(PEScoreAvg));
stu.setTotalScoreAvg(df.format(totalScoreAvg));
}
} catch (Exception e) {
e.printStackTrace();
} finally {
}
Collections.sort(descOrderStudentList, new Comparator<Student>() {
@Override
public int compare(Student o1, Student o2) {
return o2.getTotalScore().compareTo(o1.getTotalScore());
}
});
if(!POIUtil.exportExcel(filePath,descOrderStudentList)){
System.out.println("导出到excel文件失败");
}
return descOrderStudentList;
}
public boolean reviseStuInfo(Student student) {
Connection conn = null;
PreparedStatement pstmt =null;
String sql="update test.student set stu_name = ? , stu_genda = ?, stu_birthday = ? ,class_name = ? ,math_score =? ,java_score =? ,PE_score =? where stu_id =?";
int updateRow=0;
try {
conn = JDBCUtil.getConnection();
pstmt=conn.prepareStatement(sql);
pstmt.setString(1,student.getName());
pstmt.setString(2,student.getGenda());
pstmt.setDate(3, new java.sql.Date(student.getBirthday().getTime()));
pstmt.setString(4,student.getClassName());
pstmt.setString(5,student.getMathScore());
pstmt.setString(6,student.getJavaScore());
pstmt.setString(7,student.getPEScore());
pstmt.setString(8,student.getStudentId());
//获得受sql语句影响的行数
updateRow=pstmt.executeUpdate();
return updateRow>0;
} catch (SQLException e) {
e.printStackTrace();
}
finally {
JDBCUtil.closeConnection(conn);
}
return false;
}
public boolean deleteStudent(String studentId) {
Connection conn = null;
PreparedStatement pstmt =null;
ResultSet rs = null;
String sql="delete From test.student where stu_id = ?";
try {
conn = JDBCUtil.getConnection();
pstmt= conn.prepareStatement(sql);
pstmt.setString(1,studentId);
int updateRow= pstmt.executeUpdate();
//获得受sql语句影响的行数
return updateRow>0;
} catch (SQLException e) {
e.printStackTrace();
}
finally {
JDBCUtil.closeConnection(conn);
}
return false;
}
学生学习成绩报表输出模块
用于将学生学习成绩信息以Excel表格的形式输出；
public static boolean exportExcel(String pathName, List<Student> descOrderStudentList){
File file = new File(pathName);
/*
当文件路径存在时，删除并重新创建。不存在时，直接重新创建
*/
if(file.exists()){
file.delete();
}
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
if (file.exists()) {
XSSFWorkbook workbook = new XSSFWorkbook();
XSSFSheet sheet = workbook.createSheet("学生学习情况报表");
XSSFRow row = sheet.createRow(0);
row.createCell(0).setCellValue("学号");
row.createCell(1).setCellValue("姓名");
row.createCell(2).setCellValue("班级");
row.createCell(3).setCellValue("数学成绩");
row.createCell(4).setCellValue("数学班级平均成绩");
row.createCell(5).setCellValue("java成绩");
row.createCell(6).setCellValue("java班级平均成绩");
row.createCell(7).setCellValue("体育成绩");
row.createCell(8).setCellValue("体育班级平均成绩");
row.createCell(9).setCellValue("总成绩");
row.createCell(10).setCellValue("班级平均总成绩");
for(int i=1;i<=descOrderStudentList.size();i++){
if(descOrderStudentList.get(i-1)!=null){
row=sheet.createRow(i);
XSSFCell cell;
cell=row.createCell(0, CellType.STRING);
cell.setCellValue(descOrderStudentList.get(i-1).getStudentId());
cell=row.createCell(1,CellType.STRING);
cell.setCellValue(descOrderStudentList.get(i-1).getName());
cell=row.createCell(2,CellType.STRING);
cell.setCellValue(descOrderStudentList.get(i-1).getClassName());
cell=row.createCell(3,CellType.STRING);
cell.setCellValue(descOrderStudentList.get(i-1).getMathScore());
cell=row.createCell(4,CellType.STRING);
cell.setCellValue(descOrderStudentList.get(i-1).getMathScoreAvg());
cell=row.createCell(5,CellType.STRING);
cell.setCellValue(descOrderStudentList.get(i-1).getJavaScore());
cell=row.createCell(6,CellType.STRING);
cell.setCellValue(descOrderStudentList.get(i-1).getJavaScoreAvg());
cell=row.createCell(7,CellType.STRING);
cell.setCellValue(descOrderStudentList.get(i-1).getPEScore());
cell=row.createCell(8,CellType.STRING);
cell.setCellValue(descOrderStudentList.get(i-1).getPEScoreAvg());
cell=row.createCell(9,CellType.STRING);
cell.setCellValue(descOrderStudentList.get(i-1).getTotalScore());
cell=row.createCell(10,CellType.STRING);
cell.setCellValue(descOrderStudentList.get(i-1).getTotalScoreAvg());
}
}
try ( FileOutputStream out=new FileOutputStream(pathName)){
workbook.write(out);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return true;
}
return false;
}
随机学生信息生成模块
用于随机生成学生的各项信息，其中，每名学生的学号均唯一，且每科的成绩以80分为中心成正态分布；
public static String getId() {
StringBuilder idStringBuilder=new StringBuilder();
idStringBuilder.append("2019211").append(new DecimalFormat("00000").format(id));
id++;
return idStringBuilder.toString();
}
public static String getChineseName(){
Random random=new Random(System.nanoTime());
/* 598 百家姓 */
String[] surName = {"赵","钱","孙","李","周","吴","郑","王","冯","陈","褚","卫","蒋","沈","韩","杨","朱","秦","尤","许",
"何","吕","施","张","孔","曹","严","华","金","魏","陶","姜","戚","谢","邹","喻","柏","水","窦","章","云","苏","潘","葛","奚","范","彭","郎",
"鲁","韦","昌","马","苗","凤","花","方","俞","任","袁","柳","酆","鲍","史","唐","费","廉","岑","薛","雷","贺","倪","汤","滕","殷",
"罗","毕","郝","邬","安","常","乐","于","时","傅","皮","卞","齐","康","伍","余","元","卜","顾","孟","平","黄","和",
"穆","萧","尹","姚","邵","湛","汪","祁","毛","禹","狄","米","贝","明","臧","计","伏","成","戴","谈","宋","茅","庞","熊","纪","舒",
"屈","项","祝","董","梁","杜","阮","蓝","闵","席","季","麻","强","贾","路","娄","危","江","童","颜","郭","梅","盛","林","刁","钟",
"徐","邱","骆","高","夏","蔡","田","樊","胡","凌","霍","虞","万","支","柯","昝","管","卢","莫","经","房","裘","缪","干","解","应",
"宗","丁","宣","贲","邓","郁","单","杭","洪","包","诸","左","石","崔","吉","钮","龚","程","嵇","邢","滑","裴","陆","荣","翁","荀",
"羊","于","惠","甄","曲","家","封","芮","羿","储","靳","汲","邴","糜","松","井","段","富","巫","乌","焦","巴","弓","牧","隗","山",
"谷","车","侯","宓","蓬","全","郗","班","仰","秋","仲","伊","宫","宁","仇","栾","暴","甘","钭","厉","戎","祖","武","符","刘","景",
"詹","束","龙","叶","幸","司","韶","郜","黎","蓟","溥","印","宿","白","怀","蒲","邰","从","鄂","索","咸","籍","赖","卓","蔺","屠",
"蒙","池","乔","阴","郁","胥","能","苍","双","闻","莘","党","翟","谭","贡","劳","逄","姬","申","扶","堵","冉","宰","郦","雍","却",
"璩","桑","桂","濮","牛","寿","通","边","扈","燕","冀","浦","尚","农","温","别","庄","晏","柴","瞿","阎","充","慕","连","茹","习",
"宦","艾","鱼","容","向","古","易","慎","戈","廖","庾","终","暨","居","衡","步","都","耿","满","弘","匡","国","文","寇","广","禄",
"阙","东","欧","殳","沃","利","蔚","越","夔","隆","师","巩","厍","聂","晁","勾","敖","融","冷","訾","辛","阚","那","简","饶","空",
"曾","毋","沙","乜","养","鞠","须","丰","巢","关","蒯","相","查","后","荆","红","游","郏","竺","权","逯","盖","益","桓","公","仉",
"督","岳","帅","缑","亢","况","郈","有","琴","归","海","晋","楚","闫","法","汝","鄢","涂","钦","商","牟","佘","佴","伯","赏","墨",
"哈","谯","篁","年","爱","阳","佟","言","福","南","火","铁","迟","漆","官","冼","真","展","繁","檀","祭","密","敬","揭","舜","楼",
"疏","冒","浑","挚","胶","随","高","皋","原","种","练","弥","仓","眭","蹇","覃","阿","门","恽","来","綦","召","仪","风","介","巨",
"木","京","狐","郇","虎","枚","抗","达","杞","苌","折","麦","庆","过","竹","端","鲜","皇","亓","老","是","秘","畅","邝","还","宾",
"闾","辜","纵","侴","万俟","司马","上官","欧阳","夏侯","诸葛","闻人","东方","赫连","皇甫","羊舌","尉迟","公羊","澹台","公冶","宗正",
"濮阳","淳于","单于","太叔","申屠","公孙","仲孙","轩辕","令狐","钟离","宇文","长孙","慕容","鲜于","闾丘","司徒","司空","兀官","司寇",
"南门","呼延","子车","颛孙","端木","巫马","公西","漆雕","车正","壤驷","公良","拓跋","夹谷","宰父","谷梁","段干","百里","东郭","微生",
"梁丘","左丘","东门","西门","南宫","第五","公仪","公乘","太史","仲长","叔孙","屈突","尔朱","东乡","相里","胡母","司城","张廖","雍门",
"毋丘","贺兰","綦毋","屋庐","独孤","南郭","北宫","王孙"};
int index=random.nextInt(surName .length-1);
//获得一个随机的姓氏
String name = surName [index];
/* 从常用字中选取一个或两个字作为名 */
if(random.nextBoolean()){
name+=getChinese()+getChinese();
}else {
name+=getChinese();
}
return name;
}
public static String getChinese() {
String str = null;
//汉字以两个字节存储，称为“区位码”，高位叫区码，低位叫位码，有这俩字节组成汉字
int highPos, lowPos;
Random random = new Random();
//随机取高位B0~D7，低位A1~FE的GB2312的汉字
highPos = (176 + Math.abs(random.nextInt(39)));
random=new Random();
lowPos = 161 + Math.abs(random.nextInt(93));
byte[] bArr = new byte[2];
bArr[0] = (new Integer(highPos)).byteValue();
bArr[1] = (new Integer(lowPos)).byteValue();
try {
//区位码组合成汉字
str = new String(bArr, "GB2312");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return str;
}
public static String getRadomScore(){
Random random=new Random(System.nanoTime());
DecimalFormat df2 =new DecimalFormat("#0.00");
List<String> radomGradeList=new ArrayList<>();
//生成以80为中心，以0.5为方差的随机数
double score=Math.sqrt(0.25)*random.nextGaussian()+80.00;
String scoreString =df2.format(score);
return scoreString;
}
部分代码扫描警告结果及其改正
(1)变量命名不规范：
解决过程：更改了涉及的两个变量的命名，使其符合驼峰命名法的规范。
(2)代码中出现了未经定义的常量：
解决过程：将涉及的常量先赋值给一变量，再将该变量代入使用
10. 项目代码扫描结果
根据错误提示，经仔细比对修改，可以改正的均已改正。
改正后代码扫描结果：
