Java 基於MySQL資料庫的簡單學生管理系統
阿新 • • 發佈：2019-02-20
因為實驗室要交作業然後就做了一個學生管理系統 貼個程式碼紀念一下~
做的太急介面什麼的也比較差
還有一些小細節沒有完善不過還是能實現主要的功能的~
Window是主介面
package First; import java.sql.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Window { public static void main(String[] args){ JFrame jframe = new JFrame("學生管理系統") ; //window Dimension d = new Dimension(400,300); Point p = new Point (250,350); jframe.setSize(d); jframe.setLocation(p); jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); jframe.setVisible(true); JButton button1 = new JButton("新增"); JButton button2 = new JButton("修改"); JButton button3 = new JButton("查詢"); JButton button4 = new JButton("刪除"); JButton button5 = new JButton("瀏覽"); FlowLayout flow = new FlowLayout(FlowLayout.LEFT,10,10); JPanel panel = new JPanel(flow); panel.add(button1); panel.add(button2); panel.add(button3); panel.add(button4); panel.add(button5); jframe.add(panel); button1.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ Add add = new Add(); } }); button2.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ Change change = new Change(); } }); button3.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ Ask ask = new Ask(); } }); button4.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ Delete delete = new Delete(); } }); button5.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ Look look = new Look(); } }); } }
Add是新增
package First; import java.sql.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; import com.mysql.jdbc.Driver; import First.Window; public class Add extends JFrame { private static final long serialVersionUID = -1928970409928880648L; JLabel jlnumber = new JLabel("學號："); JLabel jlname = new JLabel("姓名："); JLabel jlsex = new JLabel("性別："); JLabel jlbirthday = new JLabel("出生日期："); JLabel jldepartment = new JLabel("學院："); JTextField jtnumber = new JTextField("",20); JTextField jtname = new JTextField("",20); JTextField jtsex = new JTextField("",20); JTextField jtbirthday = new JTextField("",20); JTextField jtdepartment = new JTextField("",20); JButton buttonadd = new JButton("新增"); JButton buttonreturn = new JButton("返回"); public Add() { JPanel jpnumber = new JPanel(); JPanel jpname = new JPanel(); JPanel jpsex = new JPanel(); JPanel jpbirthday = new JPanel(); JPanel jpdepartment = new JPanel(); JPanel jpforbutton = new JPanel(new GridLayout(1,1)); jpnumber.add(jlnumber); jpnumber.add(jtnumber); jpname.add(jlname); jpname.add(jtname); jpsex.add(jlsex); jpsex.add(jtsex); jpbirthday.add(jlbirthday); jpbirthday.add(jtbirthday); jpdepartment.add(jldepartment); jpdepartment.add(jtdepartment); jpforbutton.add(buttonadd); jpforbutton.add(buttonreturn); buttonadd.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ //Add Connection conn = null; Statement stat = null; PreparedStatement ps=null; String sql = "INSERT INTO student(number,name,sex,birthday,department) " + "values(?,?,?,?,?)"; try{ Class.forName("Driver"); System.out.println("JBDC 載入成功!"); }catch(Exception a){ System.out.println("JBDC 狗帶!"); a.printStackTrace(); } try{ conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/javaStu","root","123"); ps=conn.prepareStatement(sql); ps.setString(1,jtnumber.getText()); ps.setString(2,jtname.getText()); ps.setString(3,jtsex.getText()); ps.setString(4,jtbirthday.getText()); ps.setString(5,jtdepartment.getText()); ps.executeUpdate(); //System.out.println("MySQL 連線成功!"); //stat = conn.createStatement(); //stat.executeUpdate(sql); //System.out.println("插入資料成功!"); }catch (SQLException b){ b.printStackTrace(); }finally{ try{ conn.close(); System.out.println("MySQL 關閉成功"); }catch (SQLException c){ System.out.println("MySQL 關閉失敗 "); c.printStackTrace(); } } }} ); buttonreturn.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ Window window = new Window(); } }); this.setTitle("新增學生資訊"); this.setLayout(new GridLayout(9,1)); this.add(jpnumber); this.add(jpname); this.add(jpsex); this.add(jpbirthday); this.add(jpdepartment); this.add(jpforbutton); this.setLocation(400,300); this.setSize(350,300); this.setVisible(true); } }
Ask是查詢
package First; import java.sql.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; import First.Window; public class Ask extends JFrame { private static final long serialVersionUID = -1928970409928880648L; JLabel jlnumber = new JLabel("學號："); JLabel jlname = new JLabel("姓名："); JLabel jlsex = new JLabel("性別："); JLabel jlbirthday = new JLabel("出生日期："); JLabel jldepartment = new JLabel("學院："); JTextField jtnumber = new JTextField("",20); JLabel jname = new JLabel(); JLabel jsex = new JLabel(); JLabel jbirthday = new JLabel(); JLabel jdepartment = new JLabel(); JButton buttonask = new JButton("查詢"); JButton buttonreturn = new JButton("返回"); public Ask() { JPanel jpnumber = new JPanel(); JPanel jpname = new JPanel(); JPanel jpsex = new JPanel(); JPanel jpbirthday = new JPanel(); JPanel jpdepartment = new JPanel(); JPanel jpforbutton = new JPanel(new GridLayout(1,1)); jpnumber.add(jlnumber); jpnumber.add(jtnumber); jpname.add(jlname); jpname.add(jname); jpsex.add(jlsex); jpsex.add(jsex); jpbirthday.add(jlbirthday); jpbirthday.add(jbirthday); jpdepartment.add(jldepartment); jpdepartment.add(jdepartment); jpforbutton.add(buttonask); jpforbutton.add(buttonreturn); buttonask.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ Connection conn = null; ResultSet res = null; Statement stat = null; String sql = "SELECT number,name,sex,birthday,department FROM student;"; try{ Class.forName("com.mysql.jdbc.Driver"); }catch(Exception d){ System.out.println("jdbc fall"); d.printStackTrace(); } try{ conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/javaStu","root","123"); stat=conn.createStatement(); res=stat.executeQuery(sql); while (res.next()) { if (res.getString(1).equals(jtnumber.getText())) { jname.setText(res.getString(2)); jsex.setText(res.getString(3)); jbirthday.setText(res.getString(4)); jdepartment.setText(res.getString(5)); break; } } }catch (SQLException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } finally{ try{ conn.close(); }catch(SQLException ar){ ar.printStackTrace(); } }}} ); buttonreturn.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ Window window = new Window(); } }); this.setTitle("查詢學生資訊"); this.setLayout(new GridLayout(9,1)); this.add(jpnumber); this.add(jpname); this.add(jpsex); this.add(jpbirthday); this.add(jpdepartment); this.add(jpforbutton); this.setLocation(400,300); this.setSize(350,300); this.setVisible(true); } }
Change是修改
package First;
import java.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import First.Window;
public class Change extends JFrame {
private static final long serialVersionUID = -1928970409928880648L;
JLabel jlnumber = new JLabel("學號：");
JLabel jlname = new JLabel("姓名：");
JLabel jlsex = new JLabel("性別：");
JLabel jlbirthday = new JLabel("出生日期：");
JLabel jldepartment = new JLabel("學院：");
JTextField jtnumber = new JTextField("",20);
JTextField jtname = new JTextField("",20);
JTextField jtsex = new JTextField("",20);
JTextField jtbirthday = new JTextField("",20);
JTextField jtdepartment = new JTextField("",20);
JButton buttonchange = new JButton("修改");
JButton buttonreturn = new JButton("返回");
public Change() {
JPanel jpnumber = new JPanel();
JPanel jpname = new JPanel();
JPanel jpsex = new JPanel();
JPanel jpbirthday = new JPanel();
JPanel jpdepartment = new JPanel();
JPanel jpforbutton = new JPanel(new GridLayout(1,1));
jpnumber.add(jlnumber);
jpnumber.add(jtnumber);
jpname.add(jlname);
jpname.add(jtname);
jpsex.add(jlsex);
jpsex.add(jtsex);
jpbirthday.add(jlbirthday);
jpbirthday.add(jtbirthday);
jpdepartment.add(jldepartment);
jpdepartment.add(jtdepartment);
jpforbutton.add(buttonchange);
jpforbutton.add(buttonreturn);
buttonchange.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
String number = jtnumber.getText();
String name = jtname.getText();
String sex = jtsex.getText();
String birthday = jtbirthday.getText();
String department = jtdepartment.getText();
Connection conn = null;
ResultSet res = null;
Statement stat = null;
String sql = "SELECT number,name,sex,birthday,department FROM student;";
try{
Class.forName("com.mysql.jdbc.Driver");
}catch(Exception d){
System.out.println("jdbc fall");
d.printStackTrace();
}
try{
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/javaStu","root","123");
stat=conn.createStatement();
res=stat.executeQuery(sql);
while (res.next())
{
//change
if (res.getString(1).equals(jtnumber.getText()))
{
try{
Class.forName("com.mysql.jdbc.Driver");
}catch(Exception d){
System.out.println("jdbc fall");
d.printStackTrace();
}
String sql2="UPDATE student SET name='"+name+"' WHERE number='"+jtnumber.getText()+"'";
String sql3="UPDATE student SET sex='"+sex+"' WHERE number='"+jtnumber.getText()+"'";
String sql4="UPDATE student SET birthday='"+birthday+"' WHERE number='"+jtnumber.getText()+"'";
String sql5="UPDATE student SET department='"+department+"' WHERE number='"+jtnumber.getText()+"'";
try {
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/javaStu","root","123");
stat=conn.createStatement();
stat.executeUpdate(sql2);
stat.executeUpdate(sql3);
stat.executeUpdate(sql4);
stat.executeUpdate(sql5);
} catch (SQLException g) {
// TODO Auto-generated catch block
g.printStackTrace();
}try{
stat.close();
conn.close();
}catch(SQLException ar){
ar.printStackTrace();
}
break;
}
//change end
}
}catch (SQLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
finally{
try{
conn.close();
}catch(SQLException ar){
ar.printStackTrace();
}
}
}
});
buttonreturn.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
Window window = new Window();
}
});
this.setTitle("修改學生資訊");
this.setLayout(new GridLayout(9,1));
this.add(jpnumber);
this.add(jpname);
this.add(jpsex);
this.add(jpbirthday);
this.add(jpdepartment);
this.add(jpforbutton);
this.setLocation(400,300);
this.setSize(350,300);
this.setVisible(true);
}
}
Delete是刪除
package First;
import java.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import First.Window;
public class Delete extends JFrame {
private static final long serialVersionUID = -1928970409928880648L;
JLabel jlnumber = new JLabel("學號：");
JTextField jtnumber = new JTextField("",20);
JButton buttondelete = new JButton("刪除");
JButton buttonreturn = new JButton("返回");
public Delete() {
JPanel jpnumber = new JPanel();
JPanel jpforbutton = new JPanel(new GridLayout(1,1));
jpnumber.add(jlnumber);
jpnumber.add(jtnumber);
jpforbutton.add(buttondelete);
jpforbutton.add(buttonreturn);
buttondelete.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
String number = jtnumber.getText();
Connection conn = null;
ResultSet res = null;
Statement stat = null;
String sql = "DELETE FROM student WHERE number='"+number+"'";
try{
Class.forName("com.mysql.jdbc.Driver");
}catch(Exception a){
a.printStackTrace();
}
try{
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/javaStu","root","123");
stat = conn.createStatement();
stat.executeUpdate(sql);
}catch(SQLException h){
h.printStackTrace();
}finally{
try{
conn.close();
System.out.println("close success!");
}catch(SQLException j){
System.out.println("close go die!");
j.printStackTrace();
}
}
}
});
buttonreturn.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
Window window = new Window();
}
});
this.setTitle("刪除學生資訊");
this.setLayout(new GridLayout(9,1));
this.add(jpnumber);
this.add(jpforbutton);
this.setLocation(400,300);
this.setSize(350,300);
this.setVisible(true);
}
}
Look是瀏覽
package First;
import java.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import First.Window;
public class Look extends JFrame {
private static final long serialVersionUID = -1928970409928880648L;
Connection conn = null;
PreparedStatement ps = null;
ResultSet res = null;
//JButton buttonlook = new JButton("瀏覽");
//JButton buttonreturn = new JButton("返回");
JTable jtable;
JScrollPane jscrollpane = new JScrollPane();
Vector columnNames = null;
Vector rowData = null;
public Look() {
JPanel jpforbutton = new JPanel(new GridLayout(1,1));
columnNames = new Vector();
columnNames.add("學號");
columnNames.add("姓名");
columnNames.add("性別");
columnNames.add("出生日期");
columnNames.add("學院");
rowData = new Vector();
//jpforbutton.add(buttonlook);
//jpforbutton.add(buttonreturn);
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/javaStu","root","123");
ps = conn.prepareStatement("SELECT * FROM student");
res = ps.executeQuery();
while (res.next())
{
Vector hang = new Vector();
hang.add(res.getString(1));
hang.add(res.getString(2));
hang.add(res.getString(3));
hang.add(res.getString(4));
hang.add(res.getString(5));
rowData.add(hang);
}
System.out.println("load ok!");
}catch (Exception q){
q.printStackTrace();
System.out.println("go die");
}finally{
try{
res.close();
ps.close();
conn.close();
System.out.println("close ok");
}catch (SQLException o){
o.printStackTrace();
System.out.println("go die 2");
}
}
jtable = new JTable(rowData,columnNames);
jscrollpane = new JScrollPane(jtable);
this.add(jscrollpane);
this.setTitle("瀏覽學生資訊");
this.setLayout(new GridLayout(2,5));
this.add(jpforbutton);
this.setLocation(300,300);
this.setSize(500,300);
this.setVisible(true);
this.setResizable(false);
}
}
