一、系统介绍

本系统实现了学生登录和管理员登录，学生实现选课，查看已选课程，修改密码，查看学生信息功能。管理员实现选课信息的增删改查，学生信息查询，学生密码修改功能。

二、系统展示

1.课程查询

2.课程添加

3.退课

三、系统实现

StudentClient.java

package course;import java.awt.Dimension;import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane; 
import javax.swing.JPanel; 
import javax.swing.JTable;
import javax.swing.JTextField;import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.Color; 
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.List;import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;import course.MainPanel; 
public class StudentClient 
{ // 定义布局BorderLayout mainLayout = new BorderLayout();CardLayout layout = new CardLayout();JFrame bamFrame;MainPanel mainPanel = new MainPanel();// 主面板JPanel upPanel = new JPanel();// 主面板中的---上面板JPanel downPanel = new JPanel();// 主面板中的---下面板		CourseDao coursedao = new CourseDao();AddCoursePanel addCoursePanel = new AddCoursePanel();//添加课程页面final Object[] columnNames = {"课程编号", "课程名称", "备注"}; //列名最好用final修饰 Object[][] rowData = queryData("");DefaultTableModel model = new DefaultTableModel(rowData,columnNames);JTable dataTable = new JTable (model);	JScrollPane pane1;JScrollPane pane3;public StudentClient() {	downPanel.setLayout(layout);dataTable.setPreferredScrollableViewportSize(new Dimension(650, 100));//设置表格的大小 dataTable.setRowHeight (30);//设置每行的高度为20 dataTable.setRowHeight (0, 20);//设置第1行的高度为15 dataTable.setRowMargin (5);//设置相邻两行单元格的距离 dataTable.setSelectionBackground (Color.white);//设置所选择行的背景色 dataTable.setSelectionForeground (Color.blue);//设置所选择行的前景色 //friends.setGridColor (Color.black);//设置网格线的颜色 dataTable.selectAll ();//选择所有行 //dataTable.setRowSelectionInterval (0,2);//设置初始的选择行,这里是1到3行都处于选择状态 dataTable.clearSelection ();//取消选择 dataTable.setDragEnabled (false);//不懂这个 dataTable.setShowGrid (false);//是否显示网格线 dataTable.setShowHorizontalLines (false);//是否显示水平的网格线 dataTable.setShowVerticalLines (true);//是否显示垂直的网格线 //friends.setValueAt ("tt", 0, 0);//设置某个单元格的值,这个值是一个对象 dataTable.doLayout (); dataTable.setBackground (Color.lightGray); // 设置表格中的数据居中显示DefaultTableCellRenderer r=new DefaultTableCellRenderer();r.setHorizontalAlignment(JLabel.CENTER);dataTable.setDefaultRenderer(Object.class,r);pane1 = new JScrollPane (addCoursePanel);//JTable最好加在JScrollPane上pane1.setPreferredSize(new Dimension (650,300));//JScrollPane pane2 = new JScrollPane (example2); pane3 = new JScrollPane (dataTable); pane3.setPreferredSize(new Dimension (650,300));downPanel.add("cardSelect", pane3);// 卡片一 (添加)downPanel.add("cardAdd", pane1);// 卡片一 (查询)upPanel.add(mainPanel);//downPanel.add(addCoursePanel);//downPanel.add(pane1);// 定义主窗体bamFrame = new JFrame("学生选课管理");bamFrame.setLayout(mainLayout);bamFrame.setSize(650, 400);// 设定窗体大小// 给窗体加面板bamFrame.add(upPanel, BorderLayout.NORTH);bamFrame.add(downPanel, BorderLayout.SOUTH);addListeners();// 调用监听方法bamFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//bamFrame.pack();bamFrame.setVisible(true);}// 窗体中部分对象监听方法private void addListeners() {// 查询按钮mainPanel.getSelectButton().addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {String cname = mainPanel.getCourseField().getText();System.out.print(cname);Object[][] rowData2 = queryData(cname);model.setDataVector(rowData2, columnNames);layout.show(downPanel, "cardSelect");}});// 添加按钮mainPanel.getAddButton().addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {layout.show(downPanel, "cardAdd");}});// 点击《提交》按钮addCoursePanel.getOkButton().addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {String courseid = addCoursePanel.getCourseIdText().getText();String coursename = addCoursePanel.getCourseNameText().getText();String note = addCoursePanel.getNoteText().getText();int i = addCC(courseid, coursename, coursename);if(i>0) {Object[][] rowData2 = queryData("");model.setDataVector(rowData2, columnNames);layout.show(downPanel, "cardSelect");}}});// 点击《返回》按钮addCoursePanel.getBackButton().addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {				layout.show(downPanel, "cardSelect");}});// 点击《退课》按钮mainPanel.getDelButton().addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {int i = dataTable.getSelectedRow();if(i>0) {int index1 = dataTable.getSelectedRow();//获取选中的行String courseid = (String) dataTable.getValueAt(index1, 0);int j=coursedao.DelCourse(courseid);if(j>0) {JOptionPane.showMessageDialog(downPanel, "退课成功!");Object[][] rowData2 = queryData("");model.setDataVector(rowData2, columnNames);}else {JOptionPane.showMessageDialog(downPanel, "退课失败!");Object[][] rowData2 = queryData("");model.setDataVector(rowData2, columnNames);}}else {JOptionPane.showMessageDialog(downPanel, "请选择要退的课程!");}}});}public static void main (String[] args) { new StudentClient();}//生成表格数据/*** @return*/public Object[][] queryData(String coursename){List<Course> list=coursedao.queryAllCourse(coursename);rowData=new Object[list.size()][columnNames.length];for(int i=0;i<list.size();i++){for(int j=0;j<rowData.length;j++){rowData[i][0]=list.get(i).getCourseid();rowData[i][1]=list.get(i).getCoursename();rowData[i][2]=list.get(i).getNote();}}return rowData;}//添加课程/*** @return*/public int addCC(String courseid,String coursename,String note){int result = 0;if ( addCoursePanel.getCourseIdText().getText().equals(""))JOptionPane.showMessageDialog(addCoursePanel, "课程编号不能为空");else if (addCoursePanel.getCourseNameText().getText().equals(""))JOptionPane.showMessageDialog(addCoursePanel, "课程名称不能为空");else {result=coursedao.AddCourse(courseid, coursename, coursename);}return result;}
}

CourseDao.java

package course;import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;public class CourseDao {private Connection conn=null;private PreparedStatement ps=null;private ResultSet rs=null;//查询课程public List<Course> queryAllCourse(String coursename){String sql="select * from course where coursename like '%" + coursename + "%' or courseid like '%" + coursename +"%'";List<Course> list=new ArrayList<Course>();try {conn=DbUtils.getConnection();ps=conn.prepareStatement(sql);rs=ps.executeQuery();System.out.println(ps.toString());while(rs.next()){Course course=new Course();course.setCourseid(rs.getString(1));course.setCoursename(rs.getString(2));course.setNote(rs.getString(3));                               list.add(course);}DbUtils.close(rs, ps, conn);          } catch (SQLException e) {e.printStackTrace();}return list;}//添加课程public int AddCourse(String courseid,String coursename,String note){int result=0;String sql="insert into course(courseid,coursename,note) values(?,?,?)";List<Course> list=new ArrayList<Course>();try {conn=DbUtils.getConnection();ps = conn.prepareStatement(sql);ps.setString(1, courseid);ps.setString(2, coursename);ps.setString(3, note);result =ps.executeUpdate();// 返回值代表收到影响的行数DbUtils.close(rs, ps, conn);          } catch (SQLException e) {e.printStackTrace();}return result;}//退课public int DelCourse(String courseid){int result=0;String sql="DELETE from course where courseid = '" + courseid + "'";List<Course> list=new ArrayList<Course>();try {conn=DbUtils.getConnection();ps = conn.prepareStatement(sql);result =ps.executeUpdate();// 返回值代表收到影响的行数DbUtils.close(rs, ps, conn);          } catch (SQLException e) {e.printStackTrace();}return result;}}

四、其他

1.其它系统

Java+Swing学生信息管理系统
Java+Swing实现学生选课管理系统
Java+Swing图书管理系统

2.获取源码

或者点击下载
Java+Swing实现学生选课管理系统