基於Java swing+MySQL實現學生資訊管理系統：主要實現JDBC對學生資訊進行增刪改查，應付一般課設足矣，分享給大家。

原始碼：

https://github.com/ZhuangM/student.git

1、 開發環境：jdk7+MySQL5+win7

程式碼結構：model-dao-view

2、 資料庫設計——建庫建表語句

CREATEDATABASEstudent;

DROPTABLEIFEXISTS`admin`;

CREATETABLE`admin`(

`id`int(11)NOTNULLAUTO_INCREMENT,

`name`varchar(20)NOTNULL,

`username`varchar(20)NOTNULL,

`password`varchar(20)NOTNULL,

PRIMARYKEY(`id`)

)ENGINE=InnoDBAUTO_INCREMENT=2DEFAULTCHARSET=utf8;

LOCKTABLES`admin`WRITE;

INSERTINTO`admin`VALUES(1,'admin','admin','admin');

UNLOCKTABLES;

DROPTABLEIFEXISTS`student`;

CREATETABLE`student`(

`id`int(11)NOTNULLAUTO_INCREMENT,

`name`varchar(20)NOTNULL,

`sno`varchar(20)NOTNULL,

`department`varchar(20)NOTNULL,

`hometown`varchar(20)NOTNULL,

`mark`varchar(20)NOTNULL,

`email`varchar(20)NOTNULL,

`tel`varchar(20)NOTNULL,

`sex`varchar(20)NOTNULL,

PRIMARYKEY(`id`)

)ENGINE=InnoDBAUTO_INCREMENT=22DEFAULTCHARSET=utf8;

LOCKTABLES`student`WRITE;

INSERTINTO`student`VALUES(18,'張三','001','資訊科學技術學院','遼寧','80','[email protected]','13888888888','男'),(19,'李四','002','理學院','上海','70','[email protected]','13812341234','男'),(20,'王五','003','外國語學院','北京','88','[email protected]','13698765432','女');

UNLOCKTABLES;

3、model——管理員、學生

/**

* 專案名：student

* 修改歷史：

*/

package com.student.model;

/**

* 模組說明：admin

*

*/

publicclassAdmin{

privateintid;

privateString name;

privateString username;

privateString password;

publicStringgetName(){

returnname;

}

publicvoidsetName(String name){

this.name = name;

}

publicintgetId(){

returnid;

}

publicvoidsetId(intid){

this.id = id;

}

publicStringgetUsername(){

returnusername;

}

publicvoidsetUsername(String username){

this.username = username;

}

publicStringgetPassword(){

returnpassword;

}

publicvoidsetPassword(String password){

this.password = password;

}

}

/**

* 專案名：student

* 修改歷史：

*/

package com.student.model;

/**

* 模組說明： 學生

*

*/

publicclassStudent {

privateint id;

privateStringsno;// 學號

privateStringname;

privateStringsex;

privateStringdepartment;// 院系

privateStringhomeTown;// 籍貫

privateStringmark;// 學分

privateStringemail;

privateStringtel;// 聯絡方式

publicint getId() {

returnid;

}

publicvoidsetId(int id) {

this.id = id;

}

publicStringgetSno() {

returnsno;

}

publicvoidsetSno(Stringsno) {

this.sno = sno;

}

publicStringgetName() {

returnname;

}

publicvoidsetName(Stringname) {

this.name = name;

}

publicStringgetSex() {

returnsex;

}

publicvoidsetSex(Stringsex) {

this.sex = sex;

}

publicStringgetDepartment() {

returndepartment;

}

publicvoidsetDepartment(Stringdepartment) {

this.department = department;

}

publicStringgetHomeTown() {

returnhomeTown;

}

publicvoidsetHomeTown(StringhomeTown) {

this.homeTown = homeTown;

}

publicStringgetMark() {

returnmark;

}

publicvoidsetMark(Stringmark) {

this.mark = mark;

}

publicStringgetEmail() {

returnemail;

}

publicvoidsetEmail(Stringemail) {

this.email = email;

}

publicStringgetTel() {

returntel;

}

publicvoidsetTel(Stringtel) {

this.tel = tel;

}

}

4、 工具類DBUtil（對jdbc進行封裝）

/**

* 專案名：student

* 修改歷史：

*/

packagecom.student.util;

importjava.sql.Connection;

importjava.sql.DriverManager;

importjava.sql.PreparedStatement;

importjava.sql.ResultSet;

importjava.sql.SQLException;

importcom.student.AppConstants;

/**

* 模組說明：資料庫工具類

*

*/

publicclassDBUtil{

privatestaticDBUtil db;

privateConnection conn;

privatePreparedStatement ps;

privateResultSet rs;

privateDBUtil(){

}

publicstaticDBUtilgetDBUtil(){

if(db ==null) {

db =newDBUtil();

}

returndb;

}

publicintexecuteUpdate(String sql){

intresult = -1;

if(getConn() ==null) {

returnresult;

}

try{

ps = conn.prepareStatement(sql);

result = ps.executeUpdate();

}catch(SQLException e) {

e.printStackTrace();

}

returnresult;

}

publicintexecuteUpdate(String sql, Object[] obj){

intresult = -1;

if(getConn() ==null) {

returnresult;

}

try{

ps = conn.prepareStatement(sql);

for(inti =0; i < obj.length; i++) {

ps.setObject(i +1, obj[i]);

}

result = ps.executeUpdate();

close();

}catch(SQLException e) {

e.printStackTrace();

}

returnresult;

}

publicResultSetexecuteQuery(String sql){

if(getConn() ==null) {

returnnull;

}

try{

ps = conn.prepareStatement(sql);

rs = ps.executeQuery();

}catch(SQLException e) {

e.printStackTrace();

}

returnrs;

}

publicResultSetexecuteQuery(String sql, Object[] obj){

if(getConn() ==null) {

returnnull;

}

try{

ps = conn.prepareStatement(sql);

for(inti =0; i < obj.length; i++) {

ps.setObject(i +1, obj[i]);

}

rs = ps.executeQuery();

}catch(SQLException e) {

e.printStackTrace();

}

returnrs;

}

privateConnectiongetConn(){

try{

if(conn ==null|| conn.isClosed()) {

Class.forName(AppConstants.JDBC_DRIVER);

conn = DriverManager.getConnection(AppConstants.JDBC_URL, AppConstants.JDBC_USERNAME,

AppConstants.JDBC_PASSWORD);

}

}catch(ClassNotFoundException e) {

System.out.println("jdbc driver is not found.");

e.printStackTrace();

}catch(SQLException e) {

e.printStackTrace();

}

returnconn;

}

publicvoidclose(){

try{

if(rs !=null) {

rs.close();

}

if(ps !=null) {

ps.close();

}

if(conn !=null) {

conn.close();

}

}catch(SQLException e) {

e.printStackTrace();

}

}

}

5、dao：主要呼叫DBUtil操作相應的model——增刪改查

BaseDAO.java

/**

* 專案名：student

* 修改歷史：

*/

packagecom.student.base;

importjava.sql.ResultSet;

importjava.sql.SQLException;

importcom.student.DAO;

importcom.student.dao.AdminDAO;

importcom.student.dao.StudentDAO;

importcom.student.util.DBUtil;

/**

* 模組說明： DAO基類

*

*/

publicabstractclassBaseDAO{

protectedfinalDBUtil db = DBUtil.getDBUtil();

protectedResultSet rs;

privatestaticBaseDAO baseDAO;

publicBaseDAO(){

init();

}

privatevoidinit(){

// buildAbilityDAO();

}

// protected abstract void buildAbilityDAO();

publicstaticsynchronizedBaseDAOgetAbilityDAO(DAO dao){

switch(dao) {

caseAdminDAO:

if(baseDAO ==null|| baseDAO.getClass() != AdminDAO.class) {

baseDAO = AdminDAO.getInstance();

}

break;

caseStudentDAO:

if(baseDAO ==null|| baseDAO.getClass() != StudentDAO.class) {

baseDAO = StudentDAO.getInstance();

}

break;

default:

break;

}

returnbaseDAO;

}

protectedvoiddestroy(){

try{

if(rs !=null) {

rs.close();

}

}catch(SQLException se) {

se.printStackTrace();

}finally{

db.close();

}

}

}

AdminDAO.java

/**

* 專案名：student

* 修改歷史：

*/

package com.student.dao;

importjava.sql.SQLException;

importcom.student.base.BaseDAO;

/**

* 模組說明： 管理員增刪改查

*

*/

publicclassAdminDAOextendsBaseDAO {

privatestaticAdminDAO ad =null;

publicstaticsynchronized AdminDAO getInstance() {

if(ad ==null) {

ad =newAdminDAO();

}

returnad;

}

publicbooleanqueryForLogin(Stringusername,Stringpassword) {

booleanresult =false;

if(username.length() ==0|| password.length() ==0) {

returnresult;

}

Stringsql ="select * from admin where username=? and password=?";

String[] param = { username, password };

rs = db.executeQuery(sql, param);

try{

if(rs.next()) {

result =true;

}

}catch(SQLException e) {

e.printStackTrace();

}finally{

destroy();

}

returnresult;

}

}

StudentDAO.java

/**

* 專案名：student

* 修改歷史：

*/

packagecom.student.dao;

importjava.sql.ResultSet;

importjava.sql.SQLException;

importjava.util.ArrayList;

importjava.util.List;

importcom.student.base.BaseDAO;

importcom.student.model.Student;

/**

* 模組說明： 學生增刪改查

*

*/

publicclassStudentDAOextendsBaseDAO{

privatefinalintfieldNum =9;

privatefinalintshowNum =15;

privatestaticStudentDAO sd =null;

publicstaticsynchronizedStudentDAOgetInstance(){

if(sd ==null) {

sd =newStudentDAO();

}

returnsd;

}

// update

publicbooleanupdate(Student stu){

booleanresult =false;

if(stu ==null) {

returnresult;

}

try{

// check

if(queryBySno(stu.getSno()) ==0) {

returnresult;

}

// update

String sql ="update student set sex=?,department=?,email=?,tel=?,hometown=?,mark=? where name=? and sno=?";

String[] param = { stu.getSex(), stu.getDepartment(), stu.getEmail(), stu.getTel(), stu.getHomeTown(),

stu.getMark(), stu.getName(), stu.getSno() };

introwCount = db.executeUpdate(sql, param);

if(rowCount ==1) {

result =true;

}

}catch(SQLException se) {

se.printStackTrace();

}finally{

destroy();

}

returnresult;

}

// delete

publicbooleandelete(Student stu){

booleanresult =false;

if(stu ==null) {

returnresult;

}

String sql ="delete from student where name=? and sno=?";

String[] param = { stu.getName(), stu.getSno() };

introwCount = db.executeUpdate(sql, param);

if(rowCount ==1) {

result =true;

}

destroy();

returnresult;

}

// add

publicbooleanadd(Student stu){

booleanresult =false;

if(stu ==null) {

returnresult;

}

try{

// check

if(queryBySno(stu.getSno()) ==1) {

returnresult;

}

// insert

String sql ="insert into student(name,sno,sex,department,hometown,mark,email,tel) values(?,?,?,?,?,?,?,?)";

String[] param = { stu.getName(), stu.getSno(), stu.getSex(), stu.getDepartment(), stu.getHomeTown(),

stu.getMark(), stu.getEmail(), stu.getTel() };

if(db.executeUpdate(sql, param) ==1) {

result =true;

}

}catch(SQLException se) {

se.printStackTrace();

}finally{

destroy();

}

returnresult;

}

// query by name

publicString[][] queryByName(String name) {

String[][] result =null;

if(name.length() <0) {

returnresult;

}

List stus =newArrayList();

inti =0;

String sql ="select * from student where name like ?";

String[] param = {"%"+ name +"%"};

rs = db.executeQuery(sql, param);

try{

while(rs.next()) {

buildList(rs, stus, i);

i++;

}

if(stus.size() >0) {

result =newString[stus.size()][fieldNum];

for(intj =0; j < stus.size(); j++) {

buildResult(result, stus, j);

}

}

}catch(SQLException se) {

se.printStackTrace();

}finally{

destroy();

}

returnresult;

}

// query

publicString[][] list(intpageNum) {

String[][] result =null;

if(pageNum <1) {

returnresult;

}

List stus =newArrayList();

inti =0;

intbeginNum = (pageNum -1) * showNum;

String sql ="select * from student limit ?,?";

Integer[] param = { beginNum, showNum };

rs = db.executeQuery(sql, param);

try{

while(rs.next()) {

buildList(rs, stus, i);

i++;

}

if(stus.size() >0) {

result =newString[stus.size()][fieldNum];

for(intj =0; j < stus.size(); j++) {

buildResult(result, stus, j);

}

}

}catch(SQLException se) {

se.printStackTrace();

}finally{

destroy();

}

returnresult;

}

// 將rs記錄新增到list中

privatevoidbuildList(ResultSet rs, List list,inti)throwsSQLException{

Student stu =newStudent();

stu.setId(i +1);

stu.setName(rs.getString("name"));

stu.setDepartment(rs.getString("department"));

stu.setEmail(rs.getString("email"));

stu.setHomeTown(rs.getString("hometown"));

stu.setMark(rs.getString("mark"));

stu.setSex(rs.getString("sex"));

stu.setSno(rs.getString("sno"));

stu.setTel(rs.getString("tel"));

list.add(stu);

}

// 將list中記錄新增到二維陣列中

privatevoidbuildResult(String[][] result, List stus,intj){

Student stu = stus.get(j);

result[j][0] = String.valueOf(stu.getId());

result[j][1] = stu.getName();

result[j][2] = stu.getSno();

result[j][3] = stu.getSex();

result[j][4] = stu.getDepartment();

result[j][5] = stu.getHomeTown();

result[j][6] = stu.getMark();

result[j][7] = stu.getEmail();

result[j][8] = stu.getTel();

}

// query by sno

privateintqueryBySno(String sno)throwsSQLException{

intresult =0;

if("".equals(sno) || sno ==null) {

returnresult;

}

String checkSql ="select * from student where sno=?";

String[] checkParam = { sno };

rs = db.executeQuery(checkSql, checkParam);

if(rs.next()) {

result =1;

}

returnresult;

}

}

6、 view：與使用者互動的介面（包括LoginView.java、MainView.java、AddView.java、DeleteView.java、UpdateView.java），主要使用DAO提供的介面，由於篇幅原因，僅列出MainView即首頁。

/**

* 專案名：student

* 修改歷史：

*/

packagecom.student.view;

importjava.awt.BorderLayout;

importjava.awt.GridLayout;

importjava.awt.event.ActionEvent;

importjava.awt.event.ActionListener;

importjava.awt.event.KeyAdapter;

importjava.awt.event.KeyEvent;

importjavax.swing.JButton;

importjavax.swing.JFrame;

importjavax.swing.JLabel;

importjavax.swing.JPanel;

importjavax.swing.JScrollPane;

importjavax.swing.JTable;

importjavax.swing.JTextField;

importjavax.swing.table.DefaultTableCellRenderer;

importjavax.swing.table.DefaultTableModel;

importjavax.swing.table.TableColumn;

importcom.student.AppConstants;

importcom.student.DAO;

importcom.student.base.BaseDAO;

importcom.student.dao.StudentDAO;

/**

* 模組說明： 首頁

*

*/

publicclassMainViewextendsJFrame{

privatestaticfinallongserialVersionUID =5870864087464173884L;

privatefinalintmaxPageNum =99;

privateJPanel jPanelNorth, jPanelSouth, jPanelCenter;

privateJButton jButtonFirst, jButtonLast, jButtonNext, jButtonPre, jButtonAdd, jButtonDelete, jButtonUpdate,

jButtonFind;

privateJLabel currPageNumJLabel;

privateJTextField condition;

publicstaticJTable jTable;

privateJScrollPane jScrollPane;

privateDefaultTableModel myTableModel;

publicstaticString[] column = {"id", AppConstants.STUDENT_NAME, AppConstants.STUDENT_SNO,

AppConstants.STUDENT_SEX, AppConstants.STUDENT_DEPARTMETN, AppConstants.STUDENT_HOMETOWN,

AppConstants.STUDENT_MARK, AppConstants.STUDENT_EMAIL, AppConstants.STUDENT_TEL };

publicstaticintcurrPageNum =1;

publicMainView(){

init();

}

privatevoidinit(){

setTitle(AppConstants.MAINVIEW_TITLE);

// north panel

jPanelNorth =newJPanel();

jPanelNorth.setLayout(newGridLayout(1,5));

condition =newJTextField(AppConstants.PARAM_FIND_CONDITION);

condition.addKeyListener(newFindListener());

jPanelNorth.add(condition);

// query by name

jButtonFind =newJButton(AppConstants.PARAM_FIND);

jButtonFind.addActionListener(newActionListener() {

@Override

publicvoidactionPerformed(ActionEvent e){

find();

}

});

jButtonFind.addKeyListener(newFindListener());

// add

jPanelNorth.add(jButtonFind);

jButtonAdd =newJButton(AppConstants.PARAM_ADD);

jButtonAdd.addActionListener(newActionListener() {

@Override

publicvoidactionPerformed(ActionEvent e){

newAddView();

}

});

jPanelNorth.add(jButtonAdd);

// delete

jButtonDelete =newJButton(AppConstants.PARAM_DELETE);

jButtonDelete.addActionListener(newActionListener() {

@Override

publicvoidactionPerformed(ActionEvent e){

newDeleteView();

}

});

jPanelNorth.add(jButtonDelete);

// update

jButtonUpdate =newJButton(AppConstants.PARAM_UPDATE);

jButtonUpdate.addActionListener(newActionListener() {

@Override

publicvoidactionPerformed(ActionEvent e){

newUpdateView();

}

});

jPanelNorth.add(jButtonUpdate);

// center panel

jPanelCenter =newJPanel();

jPanelCenter.setLayout(newGridLayout(1,1));

// init jTable

String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);

myTableModel =newDefaultTableModel(result, column);

jTable =newJTable(myTableModel);

DefaultTableCellRenderer cr =newDefaultTableCellRenderer();

cr.setHorizontalAlignment(JLabel.CENTER);

jTable.setDefaultRenderer(Object.class, cr);

initJTable(jTable, result);

jScrollPane =newJScrollPane(jTable);

jPanelCenter.add(jScrollPane);

// south panel

jPanelSouth =newJPanel();

jPanelSouth.setLayout(newGridLayout(1,5));

jButtonFirst =newJButton(AppConstants.MAINVIEW_FIRST);

jButtonFirst.addActionListener(newActionListener() {

@Override

publicvoidactionPerformed(ActionEvent e){

currPageNum =1;

String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);

initJTable(jTable, result);

currPageNumJLabel.setText(AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum

+ AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);

}

});

jButtonPre =newJButton(AppConstants.MAINVIEW_PRE);

jButtonPre.addActionListener(newActionListener() {

@Override

publicvoidactionPerformed(ActionEvent e){

currPageNum--;

if(currPageNum <=0) {

currPageNum =1;

}

String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);

initJTable(jTable, result);

currPageNumJLabel.setText(AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum

+ AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);

}

});

jButtonNext =newJButton(AppConstants.MAINVIEW_NEXT);

jButtonNext.addActionListener(newActionListener() {

@Override

publicvoidactionPerformed(ActionEvent e){

currPageNum++;

if(currPageNum > maxPageNum) {

currPageNum = maxPageNum;

}

String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);

initJTable(jTable, result);

currPageNumJLabel.setText(AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum

+ AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);

}

});

jButtonLast =newJButton(AppConstants.MAINVIEW_LAST);

jButtonLast.addActionListener(newActionListener() {

@Override

publicvoidactionPerformed(ActionEvent e){

currPageNum = maxPageNum;

String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);

initJTable(jTable, result);

currPageNumJLabel.setText(AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum

+ AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);

}

});

currPageNumJLabel =newJLabel(

AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum + AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);

currPageNumJLabel.setHorizontalAlignment(JLabel.CENTER);

jPanelSouth.add(jButtonFirst);

jPanelSouth.add(jButtonPre);

jPanelSouth.add(currPageNumJLabel);

jPanelSouth.add(jButtonNext);

jPanelSouth.add(jButtonLast);

this.add(jPanelNorth, BorderLayout.NORTH);

this.add(jPanelCenter, BorderLayout.CENTER);

this.add(jPanelSouth, BorderLayout.SOUTH);

setBounds(400,200,750,340);

setResizable(false);

setDefaultCloseOperation(DISPOSE_ON_CLOSE);

setVisible(true);

}

publicstaticvoidinitJTable(JTable jTable, String[][] result){

((DefaultTableModel) jTable.getModel()).setDataVector(result, column);

jTable.setRowHeight(20);

TableColumn firsetColumn = jTable.getColumnModel().getColumn(0);

firsetColumn.setPreferredWidth(30);

firsetColumn.setMaxWidth(30);

firsetColumn.setMinWidth(30);

TableColumn secondColumn = jTable.getColumnModel().getColumn(1);

secondColumn.setPreferredWidth(60);

secondColumn.setMaxWidth(60);

secondColumn.setMinWidth(60);

TableColumn thirdColumn = jTable.getColumnModel().getColumn(2);

thirdColumn.setPreferredWidth(90);

thirdColumn.setMaxWidth(90);

thirdColumn.setMinWidth(90);

TableColumn fourthColumn = jTable.getColumnModel().getColumn(3);

fourthColumn.setPreferredWidth(30);

fourthColumn.setMaxWidth(30);

fourthColumn.setMinWidth(30);

TableColumn seventhColumn = jTable.getColumnModel().getColumn(6);

seventhColumn.setPreferredWidth(30);

seventhColumn.setMaxWidth(30);

seventhColumn.setMinWidth(30);

TableColumn ninthColumn = jTable.getColumnModel().getColumn(8);

ninthColumn.setPreferredWidth(90);

ninthColumn.setMaxWidth(90);

ninthColumn.setMinWidth(90);

}

privateclassFindListenerextendsKeyAdapter{

@Override

publicvoidkeyPressed(KeyEvent e){

if(e.getKeyCode() == KeyEvent.VK_ENTER) {

find();

}

}

}

privatevoidfind(){

currPageNum =0;

String param = condition.getText();

if("".equals(param) || param ==null) {

initJTable(MainView.jTable,null);

currPageNumJLabel.setText(AppConstants.MAINVIEW_FIND_JLABEL);

return;

}

String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).queryByName(param);

condition.setText("");

initJTable(MainView.jTable, result);

currPageNumJLabel.setText(AppConstants.MAINVIEW_FIND_JLABEL);

}

}

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