首先建两张表 一个是用户表 一个是学生表
根据表的字段在entity包下建两个实体类 两张表对应两个实体类
如果使用mybatis的话可以在dao包下写接口
增 改 传实体类对象 删 和 按ID查询 传int 查全部不用传参数 条件查询最好传Map
然后在service包下定义所有需要用到的接口 在建个子包里面去实现接口 在controllor层就用接口new实现类
上面的代码会有冗余的部分 可以把那部分封装成一个utils
不同的view层用不同的controllor 至此Model层就写完了
如果view层是jsp的话 controllor可以用struts2 jsp请求到struts2的action action根据不同的请求调用不同的service 再由service调用dao操作数据库；
这就是MVC
怎样给你发过去呢？用忽然数据库连接不？ 追问： java吧 不要用 数据库 了 用文件就行了 回答： mport java.awt.Colorimport java.awt.event.ActionEventimport java.awt.event.ActionListener import javax.swing.ImageIconimport javax.swing.JButtonimport javax.swing.JFrameimport javax.swing.JLabel import javax.swing.JTextField class Tjsc implements ActionListener{ private JFrame frame=new JFrame("学生信息添加") private JLabel sfzLab = new JLabel(" 身份证号 ") private JLabel bnameLab = new JLabel("姓 名") private JLabel xbLab = new JLabel("性 别") private JLabel dateLab = new JLabel(" 出生日期 ") private JLabel xhLab = new JLabel(" 学号 ") private JLabel xiLab = new JLabel("系别") private JButton tianjia = new JButton("添加")private JButton exit = new JButton("退出")private JButton reset = new JButton("重置")private JButton delete = new JButton("删除")private JLabel infoLab = new JLabel("学生 信息管理 ") private JTextField sfzText = new JTextField() private JTextField bnameText = new JTextField() private JTextField xbText = new JTextField() private JTextField dateText = new JTextField() private JTextField xhText = new JTextField() private JTextField xiText = new JTextField()private JTextField sfzText1 = new JTextField() private JTextField bnameText1 = new JTextField() private JTextField xbText1 = new JTextField() private JTextField dateText1 = new JTextField() private JTextField xhText1= new JTextField() private JTextField xiText1 = new JTextField()private ImageIcon co=new ImageIcon("image/0422293335L.jpg")JLabel label=new JLabel(co) Tjsc(){ frame.setLayout(null)label.setBounds(0, 0, 500,330) frame.add(label) sfzLab.setForeground(Color.BLACK)bnameLab.setForeground(Color.BLACK)xbLab.setForeground(Color.BLACK)dateLab.setForeground(Color.BLACK)xhLab.setForeground(Color.BLACK)xiLab.setForeground(Color.BLACK) infoLab.setForeground(Color.BLACK) sfzLab.setBounds(80,35,80,20) bnameLab.setBounds(80,65,80,20) xbLab.setBounds(265,95,60,20) dateLab.setBounds(80,95,60,20)xhLab.setBounds(265,35,60,20)xiLab.setBounds(265,65,60,20) sfzText.setBounds(135,35,100,20) bnameText.setBounds(135,65,100,20) xbText.setBounds(300,95,100,20) dateText.setBounds(135,95,100,20) xhText.setBounds(300,35,100,20) xiText.setBounds(300,65,100,20) sfzText1.setBounds(135,180,100,20) bnameText1.setBounds(135,210,100,20) xbText1.setBounds(300,240,100,20) dateText1.setBounds(135,240,100,20) xhText1.setBounds(300,180,100,20) xiText1.setBounds(300,210,100,20) tianjia.setBounds(150,140,60,20)exit.setBounds(290,140,60,20) reset.setBounds(220,140,60,20)delete.setBounds(230,270,60,20)infoLab.setBounds(200,280,120,70) label.add(sfzLab) label.add(bnameLab) label.add(xbLab) label.add(dateLab) label.add(xhLab) label.add(xiLab) label.add(infoLab)label.add(sfzText) label.add(bnameText) label.add(xbText) label.add(dateText) label.add(xhText) label.add(xiText) label.add(tianjia)label.add(exit)label.add(delete)label.add(reset) label.add(sfzText1) label.add(bnameText1) label.add(xbText1) label.add(dateText1) label.add(xhText1) label.add(xiText1) frame.setSize(500,360) frame.getContentPane().setBackground(Color.WHITE) frame.setLocation(300,200) frame.setVisible(true) tianjia.addActionListener(this) exit.addActionListener(this)reset.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ if(e.getSource()==reset){ sfzText.setText("") bnameText.setText("") xbText.setText("") dateText.setText("") xhText.setText("") xiText.setText("") infoLab.setText("学生信息管理") } } }) } public void actionPerformed(ActionEvent e){ if(e.getSource()==tianjia){ if(sfzText.getText().trim().equals("")||bnameText.getText().trim().equals("")||xbText.getText().trim().equals("")||dateText.getText().trim().equals("")||xhText.getText().trim().equals("")||xiText.getText().trim().equals("")) infoLab.setText("信息不能为空")else { sfzText1.setText(sfzText.getText().trim()) bnameText1.setText(bnameText.getText().trim())xbText1.setText(xbText.getText().trim()) dateText1.setText(dateText.getText().trim()) xhText1.setText(xhText.getText().trim()) xiText1.setText(xiText.getText().trim()) infoLab.setText("添加成功")} delete.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ if(e.getSource()==delete){ sfzText1.setText("") bnameText1.setText("") xbText1.setText("") dateText1.setText("") xhText1.setText("") xiText1.setText("") infoLab.setText("学生信息管理") } } }) } if(e.getSource()==exit){ //System.exit(1) frame.setVisible(false) } } }import java.awt.event.ActionEventimport java.awt.event.ActionListener import javax.swing.ImageIconimport javax.swing.JButtonimport javax.swing.JFrameimport javax.swing.JLabelimport javax.swing.JScrollPaneimport javax.swing.JTableimport javax.swing.JTextFieldimport javax.swing.table.DefaultTableModel class Cx implements ActionListener{ private JFrame frame=new JFrame("学生信息查询") private JButton search = new JButton("查询")private JButton reset = new JButton("重置")private JButton exit = new JButton("退出") private JLabel numLab = new JLabel("学号") private JLabel nameLab = new JLabel("姓名") private JLabel keLab=new JLabel("班级")private JLabel fenLab=new JLabel("班主任") private JLabel infoLab = new JLabel("学生信息管理") private JTextField numText = new JTextField() private JTextField nameText = new JTextField() private JTextField keText = new JTextField() private JTextField fenText = new JTextField() private JTextField numText1 = new JTextField() private JTextField nameText1 = new JTextField() private JTextField keText1 = new JTextField() private JTextField fenText1 = new JTextField() private ImageIcon co=new ImageIcon("image/9.jpg")JLabel label=new JLabel(co) JTable table=nullDefaultTableModel tableModel=new DefaultTableModel()String[] titles={"学号","姓名","班级","班主任"} String a,b,c,d,f Cx(){ frame.setLayout(null) frame.add(label) label.setBounds(0, 0, 500, 400) numLab.setBounds(50,30,60,20) nameLab.setBounds(290,30,60,20) keLab.setBounds(50,65,60,20) fenLab.setBounds(290, 65, 60, 20) infoLab.setBounds(210,200,220,30) numText.setBounds(115,30,100,20) nameText.setBounds(355,30,100,20) keText.setBounds(115,65,100,20) fenText.setBounds(355,65,100,20) search.setBounds(50,170,60,20) reset.setBounds(200,170,60,20) exit.setBounds(350,170,60,20) numText1.setBounds(0,280,125,20) nameText1.setBounds(125,280,125,20) keText1.setBounds(250,280,125,20) fenText1.setBounds(375,280,125,20) label.add(numLab)label.add(nameLab) label.add(keLab) label.add(fenLab) label.add(infoLab) label.add(numText)label.add(nameText) label.add(keText) label.add(fenText) label.add(numText1)label.add(nameText1) label.add(keText1) label.add(fenText1) label.add(search) label.add(reset) label.add(exit) frame.setSize(500,400) tableModel.setColumnIdentifiers(titles)table=new JTable(tableModel)JScrollPane scr=new JScrollPane(table)label.add(scr)scr.setBounds(0, 260, 500,300)frame.setLocation(300,200) frame.setVisible(true) search.addActionListener(this) exit.addActionListener(this) reset.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ if(e.getSource()==reset){ numText.setText("") nameText.setText("") keText.setText("") fenText.setText("")infoLab.setText("已重置") } } }) } public void actionPerformed(ActionEvent e){ if(e.getSource()==exit){ /*System.exit(0)*/ frame.setVisible(false) } String tnum = numText.getText()if(numText.getText().trim().equals("")) infoLab.setText("学号不能为空！")if("082021031".equals(tnum)){ nameText1.setText(" 王鹏 ") numText1.setText("082021031")keText1.setText("计网081")fenText1.setText("胡娜")infoLab.setText("查询成功！")} else { infoLab.setText("查询失败！") } } } public class chaxun{ public static void main(String[] args){ new Cx()} } 这是我做的 教务管理系统 ~~~ 学生信息管理系统 文件丢失·~你改改字~~就差不多一样·~
