- package edu.jmi.xyh.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import edu.jmi.xyh.bean.Student;
public class StudentDao {
public int save(Student student){
DBOperation dboperation= new DBOperation();
Connection connection=null;
try{
connection=dboperation.getConnection();
Statement st=connection.createStatement();
String sql="insert into student(stuId,stuName,stuPwd)valuse('"
+student.getStuId()+"','"+student.getStuName()+"'+'"+student.getStuPwd()+"')";
st.execute(sql);
System.out.println(sql);
return 0;
}catch(Exception ex){
ex.printStackTrace();
return -1;
}finally{
dboperation.closeConnect(connection);
}
}
public int update(Student student){
DBOperation dboperation= new DBOperation();
Connection connection=null;
try{
connection=dboperation.getConnection();
Statement st=connection.createStatement();
String sql="update student set stuName='"+student.getStuName()+
"', stuPwd='"+student.getStuPwd()+"' where stuId='"+
student.getStuId()+"'";
st.execute(sql);
System.out.println(sql);
return 0;
}catch(Exception ex){
ex.printStackTrace();
return -1;
}finally{
dboperation.closeConnect(connection);
}
}
public int delete(Student student){
DBOperation dboperation= new DBOperation();
Connection connection=null;
try{
connection=dboperation.getConnection();
String sql="delete from student where stuId='?'";
PreparedStatement pst=connection.prepareStatement(sql);
pst.setString(1, student.getStuId());
pst.execute();
System.out.println(sql);
return 0;
}catch(Exception ex){
ex.printStackTrace();
return -1;
}finally{
dboperation.closeConnect(connection);
}
}
public List<Student> query(){
DBOperation dboperation= new DBOperation();
Connection connection=null;
List<Student> list = new ArrayList<Student>();
try{
connection=dboperation.getConnection();
Statement st=connection.createStatement();
String sql="select* from student";
ResultSet rs=st.executeQuery(sql);
if(rs.next()){
Student student=new Student();
String stuId=rs.getString("stuId");
String stuName=rs.getString("stuName");
String stuPwd=rs.getString("stuPwd");
student.setStuId(stuId);
student.setStuName(stuName);
student.setStuPwd(stuPwd);
list.add(student);
}
System.out.println(sql);
return list;
}catch(Exception ex){
ex.printStackTrace();
return null;
}finally{
dboperation.closeConnect(connection);
}
}
public static Student query(String id) {
DBOperation dbOperation=new DBOperation();
Connection connction=null;
try{
connction=dbOperation.getConnection();
Statement st=connction.createStatement();
String sql="select * from student where stuid='"+id+"'";
ResultSet rs=st.executeQuery(sql);
Student student=null;
if(rs.next()){
student=new Student();
String stuId=rs.getString("stuId");
String stuName=rs.getString("stuName");
String stuPwd=rs.getString("stuPwd");
student.setStuId(stuId);
student.setStuName(stuName);
student.setStuPwd(stuPwd);
}
return student;
}catch(Exception ex){
ex.printStackTrace();
return null;
}finally{
dbOperation.closeConnect(connction);
}
}
public static void main(String args[]){
StudentDao studentDao=new StudentDao();
List<Student> list=studentDao.query();
for(Student student:list){
System.out.println(student.getStuName());
}
}
}
2.package edu.jmi.xyh.view;
import java.awt.BorderLayout;
public class MainView extends JFrame {
private JPanel contentPane;
protected Object id;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
MainView frame = new MainView();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public MainView() {
setTitle("\u6B22\u8FCE\u767B\u5F55\u5B66\u751F\u7BA1\u7406\u7CFB\u7EDF");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 545, 444);
JMenuBar menuBar = new JMenuBar();
setJMenuBar(menuBar);
JMenu mnNewMenu = new JMenu("\u5B66\u751F\u4FE1\u606F\u7BA1\u7406");
menuBar.add(mnNewMenu);
JMenu mnNewMenu_1 = new JMenu("\u5B66\u751F\u4FE1\u606F");
mnNewMenu.add(mnNewMenu_1);
JMenu menu = new JMenu("\u6CE8\u518C");
menu.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
RegisterView gui =new RegisterView(); //生成主窗体对象
gui.setMainView(MainView.this);//将登录对象设置到主窗体对象，便于在主窗体中引用
gui.setID(id);//将用户名设置到主窗体对象
gui.setVisible(true); //显示出窗体
//隐藏登录窗口
MainView.this.setVisible(false); //隐藏登录窗体
}
});
mnNewMenu_1.add(menu);
JMenu menu_1 = new JMenu("\u7BA1\u7406");
mnNewMenu_1.add(menu_1);
JMenu menu_2 = new JMenu("\u67E5\u8BE2");
mnNewMenu_1.add(menu_2);
JMenu menu_3 = new JMenu("\u9009\u8BFE\u4FE1\u606F");
mnNewMenu.add(menu_3);
JMenu menu_4 = new JMenu("\u73ED\u7EA7\u7BA1\u7406");
menuBar.add(menu_4);
JMenu menu_5 = new JMenu("\u8BFE\u7A0B\u7BA1\u7406");
menuBar.add(menu_5);
JMenu menu_6 = new JMenu("\u7528\u6237\u7BA1\u7406");
menuBar.add(menu_6);
JMenu menu_7 = new JMenu("\u9000\u51FA");
menu_7.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
System.exit(0);
}
});
menuBar.add(menu_7);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JLabel label = new JLabel("\u6B22 \u8FCE \u60A8 \u4F7F \u7528 \u5B66 \u751F");
label.setFont(new Font("宋体", Font.PLAIN, 20));
label.setBounds(218, 52, 200, 40);
contentPane.add(label);
JLabel label_1 = new JLabel("\u7BA1 \u7406 \u7CFB \u7EDF");
label_1.setFont(new Font("宋体", Font.PLAIN, 20));
label_1.setBounds(246, 93, 131, 24);
contentPane.add(label_1);
}
public void initView() {
// TODO Auto-generated method stub
}
}
- package edu.jmi.xyh.view;
import java.awt.BorderLayout;
public class RegisterView extends JFrame {
private JPanel contentPane;
private JTextField txID;
private JTextField txName;
private JPasswordField txPw;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
RegisterView frame = new RegisterView();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public RegisterView() {
setTitle("\u5B66\u751F\u4FE1\u606F\u6CE8\u518C");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 361, 327);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JLabel label = new JLabel("\u5B66 \u751F \u4FE1 \u606F \u6CE8 \u518C");
label.setFont(new Font("宋体", Font.PLAIN, 20));
label.setBounds(109, 10, 197, 27);
contentPane.add(label);
JLabel lblId = new JLabel("\u7528 \u6237 ID\uFF1A");
lblId.setBounds(78, 47, 73, 15);
contentPane.add(lblId);
JLabel label_2 = new JLabel("\u7528 \u6237 \u540D\uFF1A");
label_2.setBounds(78, 85, 73, 15);
contentPane.add(label_2);
JLabel lblNewLabel = new JLabel("\u5BC6 \u7801\uFF1A");
lblNewLabel.setBounds(78, 124, 73, 15);
contentPane.add(lblNewLabel);
txID = new JTextField();
txID.setBounds(157, 47, 110, 21);
contentPane.add(txID);
txID.setColumns(10);
txName = new JTextField();
txName.setBounds(161, 82, 106, 21);
contentPane.add(txName);
txName.setColumns(10);
txPw = new JPasswordField();
txPw.setBounds(161, 121, 106, 21);
contentPane.add(txPw);
JButton btnNewButton = new JButton("\u6CE8\u518C");
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
//完成注册功能
String id=txID.getText();
if(id==null||id.length()==0||id.length()>20){
JOptionPane.showMessageDialog(null, "ID输入不正确！");
}
//继续验证用户名和密码
String pw=txPw.getText();
String name=txName.getText();
Student student=new Student();
student.setStuId(id);
student.setStuName(name);
student.setStuPwd(pw);
StudentDao studentDao=new StudentDao();
int result=studentDao.save(student);
if(result==4)
JOptionPane.showMessageDialog(null, "注册成功！");
else{
JOptionPane.showMessageDialog(null, "注册失败！");
System.exit(0);
}
System.out.println("id="+id+"pw="+pw);
}
});
btnNewButton.setBounds(47, 183, 93, 23);
contentPane.add(btnNewButton);
JButton btnNewButton_1 = new JButton("\u9000\u51FA");
btnNewButton_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
//生成一个对象
MainView mainView = new MainView();
//隐藏窗口
RegisterView.this.setVisible(false);
mainView.setVisible(true);
}
});
btnNewButton_1.setBounds(194, 183, 93, 23);
contentPane.add(btnNewButton_1);
}
public void setMainView(MainView mainView) {
// TODO Auto-generated method stub
}
public void setID(Object id) {
// TODO Auto-generated method stub
}
}
