Java+Mysql學生管理系統源碼

最近正在學java和數據庫，想起以前寫的學生管理系統，都是從網上下載，敷衍了事。閒來無事，也就自己寫了一個，不過功能實現的不是很多。

開發語言：java； 開發環境：Mysql, java； 開發工具：eclipse
開發此案例，首先得在電腦上有java開發環境和Mysql, java開發環境與Mysql的搭建，就不再敘述了，如果需要，請聯繫我最下面的聯繫方式：[email protected]

此次系統比較簡易：數據庫中只有一個表：stu;功能：能夠對學生增加、刪除、修改。
開發步驟：
1.在數據庫中建表：

 create table stu(stuId String,stuName String,stuSex String,stuAge int,stuJG String,stuDept Sring);

2.java 代碼主要由四個類組成：
Test3包含主函數；StuModel用來刷新、呈現數據庫；StuAddDiag用來實現增添讀者功能；StuUpDiag是修改學生信息。具體代碼如下：
Test3.java:

 import javax.swing.*;import java.util.*;import java.awt.*;import java.awt.event.*;import java.sql.Connection;import java.sql.Driver;import java.sql.DriverManager;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.Statement;public class Test3 extends JFrame implements ActionListener { //定義一些控件JPanel jp1,jp2; JLabel jl1,jl2; JButton jb1,jb2,jb3,jb4; JTable jt; JScrollPane jsp; JTextField jtf; StuModel sm; //定義連接數據庫的變量Statement stat = null; PreparedStatement ps; Connection ct = null; ResultSet rs = null; public static void main(String[] args){ Test3 test3 = new Test3(); } //構造函數public Test3(){ jp1 = new JPanel(); jtf = new JTextField(10); jb1 = new JButton("查詢"); jb1.addActionListener(this); jl1 = new JLabel("請輸入名字："); jp1.add(jl1); jp1.add(jtf); jp1.add(jb1); jb2 = new JButton("添加"); jb2.addActionListener(this); jb3 = new JButton("修改"); jb3.addActionListener(this); jb4 = new JButton("刪除"); jb4.addActionListener(this); jp2 = new JPanel(); jp2.add(jb2); jp2.add(jb3); jp2.add(jb4); //創建模型對象sm = new StuModel(); //初始化jt = new JTable(sm); jsp = new JScrollPane(jt); //將jsp放入到jframe中this.add(jsp); this.add(jp1,"North"); this.add(jp2,"South"); this.setSize(600, 400); //this.setLocation(300, 200); this.setDefaultCloseOperation(EXIT_ON_CLOSE); this.setVisible(true); } public void actionPerformed(ActionEvent arg0) { //判斷是哪個按鈕被點擊if(arg0.getSource() == jb1){ System.out.println("用戶希望被查詢..."); //因為把對錶的數據封裝到StuModel中，可以比較簡單的完成查詢String name = this.jtf.getText().trim(); //寫一個sql語句String sql = "select * from stu where stuName = '"+name+"' "; //構建一個數據模型類，並更新sm = new StuModel(sql); //更新jtable jt.setModel(sm); } //一、彈出添加界面else if(arg0.getSource() == jb2){ System.out.println("添加..."); StuAddDiag sa = new StuAddDiag(this,"添加學生",true); //重新再獲得新的數據模型, sm = new StuModel(); jt.setModel(sm); }else if(arg0.getSource() == jb4){ //二、刪除記錄//1.得到學生的ID int rowNum = this.jt.getSelectedRow();//getSelectedRow會返回給用戶點中的行//如果該用戶一行都沒有選，就返回-1 if(rowNum == -1){ //提示JOptionPane.showMessageDialog(this, "請選中一行"); return ; } //得到學術ID String stuId = (String)sm.getValueAt(rowNum, 0); System.out.println("Id： "+stuId); //連接數據庫,完成刪除任務try{ //1.加載驅動Class.forName("com.mysql.jdbc.Driver"); //2.連接數據庫String url = "jdbc:mysql://localhost:3306/spdb1"; String user = "root"; String passwd = "lfdy"; ct = DriverManager.getConnection(url, user, passwd); System.out.println("連接成功"); ps = ct.prepareStatement("delete from stu where stuId = ?"); ps.setString(1,stuId); ps.executeUpdate(); }catch(Exception e){ e.printStackTrace(); }finally{ try{ if(rs!= null){ rs.close(); rs = null; } if(ps!= null){ ps.close(); ps = null; } if(ct != null){ ct.close(); ct = null; } } catch(Exception e){ e.printStackTrace(); } } sm = new StuModel(); //更新jtable jt.setModel(sm); }else if(arg0.getSource() == jb3){ System.out.println("11111"); //三、用戶希望修改int rowNum = this.jt.getSelectedRow(); if(rowNum == -1){ //提示JOptionPane.showMessageDialog(this, "請選擇一行"); return ; } //顯示對話框System.out.println( "12435"); StuUpDiag su = new StuUpDiag(this, "修改學術", true, sm, rowNum); sm = new StuModel(); jt.setModel(sm); } }}

StuModel.java:

 /* * 這是我的一個stu表的模型* 可以把對學生表的操作全都封裝到這個類*/package com.test2;import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.Statement;import java.util.Vector;import javax.swing.table.*;public class StuModel extends AbstractTableModel{ //rowData存放行數據，columnNames存放列名Vector rowData,columnNames; //定義連接數據庫的變量Statement stat = null; Connection ct = null; ResultSet rs = null; //初始化public void init(String sql){ if(sql.equals("")){ sql = "select * from stu"; } //中間//設置列名columnNames = new Vector(); columnNames.add("學號"); columnNames.add("名字"); columnNames.add("性別"); columnNames.add("年齡"); columnNames.add("籍貫"); columnNames.add("門派"); //rowData存放多行rowData = new Vector(); try{ //1.加載驅動Class.forName("com.mysql.jdbc.Driver"); System.out.println("加載成功"); //2.連接數據庫//定義幾個常量String url = "jdbc:mysql://localhost:3306/spdb1"; String user = "root"; String passwd = "lfdy"; ct = DriverManager.getConnection(url,user,passwd); stat = ct.createStatement();//創建stat對象rs = stat.executeQuery(sql);//查詢結果while(rs.next()){ Vector hang = new Vector(); hang.add(rs.getString(1)); hang.add(rs.getString(2)); hang.add(rs.getString(3)); hang.add(rs.getInt(4)); hang.add(rs.getString(5)); hang.add(rs.getString(6)); //加入到rowData中rowData.add(hang); } }catch(Exception e){ e.printStackTrace(); }finally{ try{ if(rs!=null){ rs.close(); rs = null; } if(stat != null){ stat.close(); stat = null; } if(ct != null){ ct.close(); ct = null; } }catch(Exception e){ e.printStackTrace(); } } } //增加學生函數public void addStu(String sql){ //根據用戶輸入的sql語句，完成添加任務} //第二個構造函數，通過傳遞的sql語句來獲得數據模型public StuModel(String sql){ this.init(sql); } //構造函數，用於初始化我的數據模型（表） public StuModel(){ this.init(""); } //得到共有多少行public int getRowCount() { // TODO Auto-generated method stub return this.rowData.size(); } //得到共有多少列public int getColumnCount() { // TODO Auto-generated method stub return this.columnNames.size(); } //得到某行某列的數據public Object getValueAt(int row, int column) { // TODO Auto-generated method stub return ((Vector)(this.rowData.get(row))).get(column); } //得到屬性名字public String getColumnName(int column) { // TODO Auto-generated method stub return (String)this.columnNames.get(column); }}

StuAddDiag.java:

 package com.test2;import javax.swing.JDialog;import javax.swing.*;import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.sql.Statement;import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.*;public class StuAddDiag extends JDialog implements ActionListener { //定義我需要的swing組件JLabel jl1,jl2,jl3,jl4,jl5,jl6; JTextField jf1,jf2,jf3,jf4,jf5,jf6; JPanel jp1,jp2,jp3; JButton jb1,jb2; //owner代筆父窗口,title是窗口的名字,modal指定是模式窗口()或者非模式窗口public StuAddDiag(Frame owner,String title, boolean modal){ //調用父類方法super(owner,title,modal); jl1 = new JLabel("學號"); jl2 = new JLabel("名字"); jl3 = new JLabel("性別"); jl4 = new JLabel("年齡"); jl5 = new JLabel("籍貫"); jl6 = new JLabel("門派"); jf1 = new JTextField(10); jf2 = new JTextField(10); jf3 = new JTextField(10); jf4 = new JTextField(10); jf5 = new JTextField(10); jf6 = new JTextField(10); jb1 = new JButton("添加"); jb1.addActionListener(this); jb2 = new JButton("取消"); jp1 = new JPanel(); jp2 = new JPanel(); jp3 = new JPanel(); //設置佈局jp1.setLayout(new GridLayout(6,1)); jp2.setLayout(new GridLayout(6,1)); jp3.add(jb1); jp3.add(jb2); jp1.add(jl1); jp1.add(jl2); jp1.add(jl3); jp1.add(jl4); jp1.add(jl5); jp1.add(jl6); jp2.add(jf1); jp2.add(jf2); jp2.add(jf3); jp2.add(jf4); jp2.add(jf5); jp2.add(jf6); this.add(jp1, BorderLayout.WEST); this.add(jp2, BorderLayout.CENTER); this.add(jp3, BorderLayout.SOUTH); this.setSize(300,200); this.setVisible(true); } @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub if(e.getSource() == jb1){ Connection ct = null; PreparedStatement pstmt = null; ResultSet rs = null; try{ //1.加載驅動Class.forName("com.mysql.jdbc.Driver"); System.out.println("加載成功"); //2.連接數據庫//定義幾個常量String url = "jdbc:mysql://localhost:3306/spdb1"; String user = "root"; String passwd = "lfdy"; ct = DriverManager.getConnection(url,user,passwd); //與編譯語句對象String strsql = "insert into stu values(?,?,?,?,?,?)"; pstmt = ct.prepareStatement(strsql); //給對象賦值pstmt.setString(1,jf1.getText()); pstmt.setString(2,jf2.getText()); pstmt.setString(3,jf3.getText()); pstmt.setString(4,jf4.getText()); pstmt.setString(5,jf5.getText()); pstmt.setString(6,jf6.getText()); pstmt.executeUpdate(); this.dispose();//關閉學生對話框}catch(Exception arg1){ arg1.printStackTrace(); }finally{ try{ if(rs!=null){ rs.close(); rs = null; } if(pstmt != null){ pstmt.close(); pstmt = null; } if(ct != null){ ct.close(); ct = null; } }catch(Exception arg2){ arg2.printStackTrace(); } } } } }

StuUpDiag.java:

 package com.test2;/* * 修改學生*/import javax.swing.JDialog;import javax.swing.*;import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.sql.Statement;import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.*;public class StuUpDiag extends JDialog implements ActionListener { //定義我需要的swing組件JLabel jl1,jl2,jl3,jl4,jl5,jl6; JTextField jf1,jf2,jf3,jf4,jf5,jf6; JPanel jp1,jp2,jp3; JButton jb1,jb2; //owner代筆父窗口,title是窗口的名字,modal指定是模式窗口()或者非模式窗口public StuUpDiag(Frame owner,String title, boolean modal,StuModel sm,int rowNum){ //調用父類方法super(owner,title,modal); jl1 = new JLabel("學號"); jl2 = new JLabel("名字"); jl3 = new JLabel("性別"); jl4 = new JLabel("年齡"); jl5 = new JLabel("籍貫"); jl6 = new JLabel("門派"); jf1 = new JTextField(10);jf1.setText((sm.getValueAt(rowNum, 0)).toString()); jf2 = new JTextField(10);jf2.setText((String)sm.getValueAt(rowNum, 1)); jf3 = new JTextField(10);jf3.setText(sm.getValueAt(rowNum, 2).toString()); jf4 = new JTextField(10);jf4.setText((sm.getValueAt(rowNum, 3)).toString()); jf5 = new JTextField(10);jf5.setText((String)sm.getValueAt(rowNum, 4)); jf6 = new JTextField(10);jf6.setText((String)sm.getValueAt(rowNum, 5)); jb1 = new JButton("修改"); jb1.addActionListener(this); jb2 = new JButton("取消"); jp1 = new JPanel(); jp2 = new JPanel(); jp3 = new JPanel(); //設置佈局jp1.setLayout(new GridLayout(6,1)); jp2.setLayout(new GridLayout(6,1)); jp3.add(jb1); jp3.add(jb2); jp1.add(jl1); jp1.add(jl2); jp1.add(jl3); jp1.add(jl4); jp1.add(jl5); jp1.add(jl6); jp2.add(jf1); jp2.add(jf2); jp2.add(jf3); jp2.add(jf4); jp2.add(jf5); jp2.add(jf6); this.add(jp1, BorderLayout.WEST); this.add(jp2, BorderLayout.CENTER); this.add(jp3, BorderLayout.SOUTH); this.setSize(300,200); this.setVisible(true); } @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub if(e.getSource() == jb1){ Connection ct = null; PreparedStatement pstmt = null; ResultSet rs = null; try{ //1.加載驅動Class.forName("com.mysql.jdbc.Driver"); System.out.println("加載成功"); //2.連接數據庫//定義幾個常量String url = "jdbc:mysql://localhost:3306/spdb1"; String user = "root"; String passwd = "lfdy"; ct = DriverManager.getConnection(url,user,passwd); //與編譯語句對象String strsql = "insert into stu values(?,?,?,?,?,?)"; pstmt = ct.prepareStatement(strsql); //給對象賦值pstmt.setString(1,jf1.getText()); pstmt.setString(2,jf2.getText()); pstmt.setString(3,jf3.getText()); pstmt.setString(4,jf4.getText()); pstmt.setString(5,jf5.getText()); pstmt.setString(6,jf6.getText()); pstmt.executeUpdate(); this.dispose();//關閉學生對話框}catch(Exception arg1){ arg1.printStackTrace(); }finally{ try{ if(rs!=null){ rs.close(); rs = null; } if(pstmt != null){ pstmt.close(); pstmt = null; } if(ct != null){ ct.close(); ct = null; } }catch(Exception arg2){ arg2.printStackTrace(); } } } } }

開發與測試結果：

1.系統主界面：

2.按名字查詢：

3.選中一行，刪除:

4.選中一行修改：

5.點擊添加按鈕，進行添加：

後續此系統將繼續完善，有疑問和技術交流的，可聯繫本人:[email protected]

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