java(swing)+ mysql实现学生信息管理系统源码

转载  2017-11-14   作者:broccoli2   我要评论
这篇文章主要分享了java mysql实现学生信息管理系统的源码,具有一定的参考价值,感兴趣的小伙伴们可以参考一下
本文实例为大家分享了java实现学生信息管理系统源码,供大家参考,具体内容如下
import java.awt.BorderLayout; import java.awt.Color; import java.awt.Font; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.util.ArrayList; import java.util.List; import javax.swing.BorderFactory; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.JTextArea; import javax.swing.table.AbstractTableModel; import javax.swing.text.BadLocationException; /* DROP DATABASE IF EXISTS `myproject`; CREATE DATABASE myproject DEFAULT CHARSET utf8 COLLATE utf8_general_ci; USE ABC; SET NAMES utf8mb4; SET FOREIGN_KEY_CHECKS = 0; DROP TABLE IF EXISTS `student`; CREATE TABLE `student` ( `id` varchar(36) NOT NULL, `name` varchar(36) NOT NULL, `age` varchar(36) NOT NULL ) ENGINE=InnoDB DEFAULT CHARSET=utf8; SET FOREIGN_KEY_CHECKS = 1; * * */ public class Test extends JFrame { private static final long serialVersionUID = 1L; private JTable table; private JPanel panel; private JScrollPane scrollpane; private JButton button1, button2, button3; private JTextArea text1, text2, text3; private List<Student> stu; public Test() throws BadLocationException, SQLException { super("学生信息"); this.setSize(500, 340); this.add(getJScrollPane(stu), BorderLayout.CENTER); this.add(getJPanel(), BorderLayout.SOUTH); this.setResizable(true); this.setLocation(300, 300); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } // 设置JScrollPane方法 private JScrollPane getJScrollPane(List<Student> stu) throws SQLException { if (scrollpane == null) { scrollpane = new JScrollPane(); scrollpane.setViewportView(getJTable(stu)); } return scrollpane; } // 设置JPanel方法 private JPanel getJPanel() { if (panel == null) { panel = new JPanel(); panel.setLayout(new GridLayout(2, 3)); text1 = new JTextArea(); text2 = new JTextArea(); text3 = new JTextArea(); button1 = new JButton("添加"); button2 = new JButton("删除"); button3 = new JButton("利发国际手机客户端"); button1.addActionListener(new insert()); button2.addActionListener(new delete()); button3.addActionListener(new update()); text1.setBorder(BorderFactory.createLineBorder(Color.gray, 2)); text2.setBorder(BorderFactory.createLineBorder(Color.gray, 2)); text3.setBorder(BorderFactory.createLineBorder(Color.gray, 2)); text1.setFont(new Font("宋体", Font.BOLD, 16)); text2.setFont(new Font("宋体", Font.BOLD, 16)); text3.setFont(new Font("宋体", Font.BOLD, 16)); text1.setText("id"); text2.setText("name"); text3.setText("age"); panel.add(text1); panel.add(text2); panel.add(text3); panel.add(button1); panel.add(button2); panel.add(button3); } return panel; } // 设置Jtable方法 private void setJTable(JTable table) { table.setFont(new Font("宋体", Font.BOLD, 18)); table.setRowHeight(30); } // 获取Jtable对象方法(该方法具体就是获得jtable对象的时候 一并从数据取出学生信息并放入Jtable表格中) private JTable getJTable(List<Student> stu) throws SQLException { if (table == null) { JDBCDaoImpl jdbc = new JDBCDaoImpl(); ResultSet rs = jdbc.search(); stu = select(rs); jdbc.closeConnection(); table = new JTable(new Table(stu)); setJTable(table); } return table; } // 设置学生信息方法(该方法是用户增加 删除 利发国际手机客户端用户操作的具体实现方法 包含了完整性检查) private Student setStu() { if (text1.getText().equals("") || text2.getText().equals("") || text3.getText().equals("")) { return null; } else { Student sd = new Student(); sd.setId(text1.getText()); sd.setName(text2.getText()); sd.setAge(text3.getText()); return sd; } } // 重置输入框为空 private void resetText() { text1.setText(""); text2.setText(""); text3.setText(""); } // 刷新学生信息方法(该方法是重新读取数据库学生的信息 然后返回一个学生的集合 用于刷新Jtable表格对象中的数据) private List<Student> select(ResultSet rs) throws SQLException { List<Student> st = new ArrayList<Student>(); while (rs.next()) { Student s = new Student(); s.setId(rs.getString(1)); s.setName(rs.getString(2)); s.setAge(rs.getString(3)); st.add(s); } return st; } // 添加按钮-监听器(该方法是对添加按钮实现的具体方法 ) class insert implements ActionListener { @Override public void actionPerformed(ActionEvent e) { stu = new ArrayList<Student>(); Student sd = new Student(); JDBCDaoImpl jdbc = new JDBCDaoImpl(); sd = setStu(); if (sd != null) { jdbc.insert(sd); ResultSet rs = jdbc.search(); try { stu = select(rs); } catch (SQLException e1) { e1.printStackTrace(); } jdbc.closeConnection(); JTable table = new JTable(new Table(stu));//新建一个Jtable 对象 用来盛放增加后的学生信息 setJTable(table);//设置Jtable信息 Test.this.scrollpane.setViewportView(table);//把Jtable设置到Panel resetText(); } else { JOptionPane.showMessageDialog(Test.this, "输入数据不完整"); } } } // 删除按钮-监听器(该方法是对删除按钮实现的具体方法) class delete implements ActionListener { @Override public void actionPerformed(ActionEvent e) { stu = new ArrayList<Student>(); Student sd = new Student(); JDBCDaoImpl jdbc = new JDBCDaoImpl(); sd = setStu(); if (sd != null) { jdbc.delete(sd); ResultSet rs = jdbc.search(); try { stu = select(rs); } catch (SQLException e1) { e1.printStackTrace(); } jdbc.closeConnection(); JTable table = new JTable(new Table(stu));//新建一个Jtable 对象 用来盛放增加后的学生信息 setJTable(table);//设置Jtable信息 Test.this.scrollpane.setViewportView(table);//把Jtable设置到Panel resetText(); } else { JOptionPane.showMessageDialog(Test.this, "输入数据不完整"); } } } // 利发国际手机客户端按钮-监听器(该方法是对利发国际手机客户端按钮实现的具体方法) class update implements ActionListener { @Override public void actionPerformed(ActionEvent e) { stu = new ArrayList<Student>(); Student sd = new Student(); JDBCDaoImpl jdbc = new JDBCDaoImpl(); sd = setStu(); if (sd != null) { jdbc.update(sd); ResultSet rs = jdbc.search(); try { stu = select(rs); } catch (SQLException e1) { e1.printStackTrace(); } jdbc.closeConnection(); JTable table = new JTable(new Table(stu));//新建一个Jtable 对象 用来盛放增加后的学生信息 setJTable(table);//设置Jtable信息 Test.this.scrollpane.setViewportView(table);//把Jtable设置到Panel resetText(); } else { JOptionPane.showMessageDialog(Test.this, "输入数据不完整"); } } } // Student类 (用于封装数据信息和数据库表进行映射) public class Student { // 学生的id name age信息 private String id; private String name; private String age; // get&set方法 public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getAge() { return age; } public void setAge(String age) { this.age = age; } } // JTable 表模式类 (JTable对象 初始化的时候通过 这个Table获取表格的行数、列数、列标题、以及每个单元格存放的数据 具体使用原因放在开头的备注了) public class Table extends AbstractTableModel { List<Student> stu = new ArrayList<Student>(); public Table(List s) { this.stu = s; } public List<Student> getStu() { return stu; } public void setStu(List<Student> stu) { this.stu = stu; } @Override // 获取行数 public int getRowCount() { return stu.size(); } @Override // 获取列数 public int getColumnCount() { // TODO Auto-generated method stub return 3; } @Override public boolean isCellEditable(int rowIndex, int columnIndex) { return true; } @Override // 获取列名字 public String getColumnName(int col) { String res = ""; switch (col) { case 0: res = "ID"; break; case 1: res = "Name"; break; case 2: res = "Age"; break; default: break; } return res; } @Override // 获取具体值 public Object getValueAt(int rowIndex, int columnIndex) { // TODO Auto-generated method stub Object res = ""; Student temp = stu.get(rowIndex); switch (columnIndex) { case 0: res = temp.getId(); break; case 1: res = temp.getName(); break; case 2: res = temp.getAge(); break; default: break; } return res; } } // JDBCDAO类 配置连接数据的信息,链接释放操作和基本增删改查操作 public class JDBCDaoImpl { String driver = "com.mysql.jdbc.Driver"; String url = "jdbc:mysql://localhost:3306/test1?useUnicode=true&characterEncoding=utf-8&useSSL=false"; String user = "root"; String passwd = "123456"; Connection conn = null; Statement stmt = null; ResultSet rs = null; // 数据库连接开始 public Connection getConnection() { try { Class.forName("com.mysql.jdbc.Driver"); conn = DriverManager.getConnection(url, user, passwd); stmt = conn.createStatement(); } catch (Exception e) { e.printStackTrace(); } return conn; } // 数据库连接释放 public void closeConnection() { if (rs != null) { try { rs.close(); stmt.close(); conn.close(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } } if (rs == null) { try { stmt.close(); conn.close(); } catch (SQLException e) { e.printStackTrace(); } } } // 查找操作 public ResultSet search() { getConnection(); try { String sql = "SELECT * FROM student"; rs = stmt.executeQuery(sql); } catch (SQLException e) { e.printStackTrace(); } return rs; } // 添加操作 public void insert(Student sd) { // TODO Auto-generated method stub getConnection(); try { String sql = "INSERT INTO student(id,name,age)" + "VALUES('" + sd.getId() + "','" + sd.getName() + "','" + sd.getAge() + "')"; int count = stmt.executeUpdate(sql); } catch (SQLException e) { e.printStackTrace(); } } // 删除操作 public void delete(Student sd) { // TODO Auto-generated method stub getConnection(); try { String sql = "DELETE FROM student WHERE id = '" + sd.getId() + "'"; int count = stmt.executeUpdate(sql); } catch (SQLException e) { e.printStackTrace(); } } // 利发国际手机客户端操作 public void update(Student sd) { // TODO Auto-generated method stub getConnection(); try { String sql = "UPDATE student SET name='" + sd.getName() + "',age= '" + sd.getAge() + "'WHERE id = '" + sd.getId() + "'"; int count = stmt.executeUpdate(sql); } catch (SQLException e) { e.printStackTrace(); } } } // main 方法 public static void main(String[] args) throws BadLocationException, SQLException { new Test().setVisible(true); } }
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