二、项目git地址

https://gitee.com/luoci0213/StudentGradeSystem

三、项目git提交记录截图

四、项目功能架构图与主要功能流程图

思维导图

功能流程图

五、程序功能运行截图：

进入界面

用户选择

登录进入

学生成绩信息

增加学生信息

删除学生信息

修改学生信息

查找学生信息

柱状图

（学生）成绩查询

Excel表格生成

六、项目关键代码

Excel生成：

public void LearningReport() throws SQLException {
ArrayList<String> list1 = new ArrayList<String>();

Connection con = null;
PreparedStatement ps = null;
ResultSet rs = null;
String sql = "select * from students ";
con = JDBCUtil.getConnection();
ps = con.prepareStatement(sql);
rs = ps.executeQuery();
while (rs.next()) {
list1.add(0, rs.getString("stunum"));
list1.add(1, rs.getString("name"));
list1.add(2, rs.getString("classes"));
list1.add(3, rs.getString("gender"));
list1.add(4, rs.getString("javaScore"));
list1.add(5, rs.getString("mathScore"));
list1.add(6, rs.getString("englishScore"));
System.out.println();
}
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet("表");
HSSFRow row1 = sheet.createRow(0);

HSSFCell cell = row1.createCell(0);
cell.setCellValue("学生成绩表");

sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, 6));

HSSFRow row2 = sheet.createRow(1);
row2.createCell(0).setCellValue("学号");
row2.createCell(1).setCellValue("名字");
row2.createCell(2).setCellValue("班级");
row2.createCell(3).setCellValue("性别");
row2.createCell(4).setCellValue("Java");
row2.createCell(5).setCellValue("Math");
row2.createCell(6).setCellValue("English");

int j = 1;
for (int i = 0; i < list1.size(); i++) {
HSSFRow row = sheet.createRow(++j);
row.createCell(0).setCellValue(list1.get(i++));
row.createCell(1).setCellValue(list1.get(i++));
row.createCell(2).setCellValue(list1.get(i++));
row.createCell(3).setCellValue(list1.get(i++));
row.createCell(4).setCellValue(list1.get(i++));
row.createCell(5).setCellValue(list1.get(i++));
row.createCell(6).setCellValue(list1.get(i));
}

try {
FileOutputStream fout = new FileOutputStream(
"C:\\Users\\ChenYan\\Desktop\\StudentGradeSystem\\StudentGradeSystem\\students.xlsx");
wb.write(fout);
fout.close();
} catch (Exception e) {
e.printStackTrace();
} finally {
JDBCUtil.realeaseAll(rs, null, con);
}
}

@Override
public List<Student> findStudentByStunum(String stunum) {
Connection con = null;
PreparedStatement pt = null;
ResultSet rs = null;
String sql = "select * from students where stunum like '%" + stunum + "%'";
List<Student> list = new ArrayList<Student>();
try {
con = JDBCUtil.getConnection();
pt = con.prepareStatement(sql);
rs = pt.executeQuery();
while (rs.next()) {
Student stu = new Student();
stu.setId(rs.getInt("id"));
stu.setName(rs.getString("name"));
stu.setStunum(rs.getString("stunum"));
stu.setClasses(rs.getInt("classes"));
stu.setGender(rs.getString("gender"));
ArrayList<Course> scoreList = new ArrayList<Course>();
Course java = new Course("java", rs.getDouble("javaScore"));
Course math = new Course("math", rs.getDouble("mathScore"));
Course english = new Course("english", rs.getDouble("englishScore"));
scoreList.add(java);
scoreList.add(math);
scoreList.add(english);
stu.setScoreList(scoreList);
list.add(stu);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
JDBCUtil.realeaseAll(rs, pt, con);
}

return list;

}

@Override
public List<Student> findStudentByClass(int classes) {
Connection con = null;
PreparedStatement pt = null;
ResultSet rs = null;
List<Student> list = new ArrayList<Student>();
try {
con = JDBCUtil.getConnection();
pt = con.prepareStatement("select * from students where classes like '%" + classes + "%'");
rs = pt.executeQuery();
while (rs.next()) {
Student stu = new Student();
stu.setId(rs.getInt("id"));
stu.setName(rs.getString("name"));
stu.setStunum(rs.getString("stunum"));
stu.setClasses(rs.getInt("classes"));
stu.setGender(rs.getString("gender"));
ArrayList<Course> scoreList = new ArrayList<Course>();
Course java = new Course("java", rs.getDouble("javaScore"));
Course math = new Course("math", rs.getDouble("mathScore"));
Course english = new Course("english", rs.getDouble("englishScore"));
scoreList.add(java);
scoreList.add(math);
scoreList.add(english);
stu.setScoreList(scoreList);
list.add(stu);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
JDBCUtil.realeaseAll(rs, pt, con);
}

return list;
}

@Override
public List<Student> findStudentByName(String name) {
Connection con = null;
PreparedStatement pt = null;
ResultSet rs = null;
String sql = "select * from students where name like '%" + name + "%'";
List<Student> list = new ArrayList<Student>();
try {
con = JDBCUtil.getConnection();
pt = con.prepareStatement(sql);
rs = pt.executeQuery();
while (rs.next()) {
System.out.println("*");
Student stu = new Student();
stu.setId(rs.getInt("id"));
stu.setName(rs.getString("name"));
stu.setStunum(rs.getString("stunum"));
stu.setClasses(rs.getInt("classes"));
stu.setGender(rs.getString("gender"));
ArrayList<Course> scoreList = new ArrayList<Course>();
Course java = new Course("java", rs.getDouble("javaScore"));
Course math = new Course("math", rs.getDouble("mathScore"));
Course english = new Course("english", rs.getDouble("englishScore"));
scoreList.add(java);
scoreList.add(math);
scoreList.add(english);
stu.setScoreList(scoreList);
list.add(stu);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {

JDBCUtil.realeaseAll(rs, pt, con);
}

return list;
}
}

柱状图：

public static JFreeChart createChart(CategoryDataset dataset) {
// 创建一个JFreeChart
JFreeChart chart = ChartFactory.createBarChart("hi", "成绩情况", "人数", dataset, PlotOrientation.VERTICAL, true,
true, false);
chart.setTitle(new TextTitle("学生成绩统计", new Font("宋体", Font.BOLD + Font.ITALIC, 20)));
CategoryPlot plot = (CategoryPlot) chart.getPlot();
CategoryAxis categoryAxis = plot.getDomainAxis();
categoryAxis.setLabelFont(new Font("微软雅黑", Font.BOLD, 12));
return chart;
}

public static JPanel createPanel(String course) throws SQLException {
JFreeChart chart = createChart(createDataset(course));
return new ChartPanel(chart);
}

}