Java+MySQL如何实现学生信息管理系统
这篇文章给大家分享的是有关Java+MySQL如何实现学生信息管理系统的内容。小编觉得挺实用的，因此分享给大家做个参考，一起跟随小编过来看看吧。
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Java主要应用于：1. web开发；2. Android开发；3. 客户端开发；4. 网页开发；5. 企业级应用开发；6. Java大数据开发；7.游戏开发等。
基于Java swing+MySQL实现学生信息管理系统：主要实现JDBC对学生信息进行增删改查，应付一般课设足矣，分享给大家。
1、 开发环境：jdk7+MySQL5+win7
代码结构：model-dao-view
2、 数据库设计--建库建表语句：
CREATE DATABASE student; DROP TABLE IF EXISTS `admin`; CREATE TABLE `admin` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(20) NOT NULL, `username` varchar(20) NOT NULL, `password` varchar(20) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8; LOCK TABLES `admin` WRITE; INSERT INTO `admin` VALUES (1,'admin','admin','admin'); UNLOCK TABLES; DROP TABLE IF EXISTS `student`; CREATE TABLE `student` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(20) NOT NULL, `sno` varchar(20) NOT NULL, `department` varchar(20) NOT NULL, `hometown` varchar(20) NOT NULL, `mark` varchar(20) NOT NULL, `email` varchar(20) NOT NULL, `tel` varchar(20) NOT NULL, `sex` varchar(20) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=22 DEFAULT CHARSET=utf8; LOCK TABLES `student` WRITE; INSERT INTO `student` VALUES (18,'张三','001','信息科学技术学院','辽宁','80','zhangsan@163.com','13888888888','男'),(19,'李四','002','理学院','上海','70','lisi@sina.com','13812341234','男'),(20,'王五','003','外国语学院','北京','88','wangwu@126.com','13698765432','女'); UNLOCK TABLES;
3、model--管理员、学生
package com.student.model;
/**
* 模块说明：admin
*
*/
public class Admin {
private int id;
private String name;
private String username;
private String password;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}/**
* 项目名：student
* 修改历史：
* 作者： MZ
* 创建时间： 2016年1月6日-上午9:42:36
*/
package com.student.model;
/**
* 模块说明： 学生
*
*/
public class Student {
private int id;
private String sno;// 学号
private String name;
private String sex;
private String department;// 院系
private String homeTown;// 籍贯
private String mark;// 学分
private String email;
private String tel;// 联系方式
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getSno() {
return sno;
}
public void setSno(String sno) {
this.sno = sno;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getDepartment() {
return department;
}
public void setDepartment(String department) {
this.department = department;
}
public String getHomeTown() {
return homeTown;
}
public void setHomeTown(String homeTown) {
this.homeTown = homeTown;
}
public String getMark() {
return mark;
}
public void setMark(String mark) {
this.mark = mark;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getTel() {
return tel;
}
public void setTel(String tel) {
this.tel = tel;
}
}4、 工具类DBUtil（对jdbc进行封装）
/**
* 项目名：student
* 修改历史：
* 作者： MZ
* 创建时间： 2016年1月6日-上午9:43:21
*/
package com.student.util;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import com.student.AppConstants;
/**
* 模块说明：数据库工具类
*
*/
public class DBUtil {
private static DBUtil db;
private Connection conn;
private PreparedStatement ps;
private ResultSet rs;
private DBUtil() {
}
public static DBUtil getDBUtil() {
if (db == null) {
db = new DBUtil();
}
return db;
}
public int executeUpdate(String sql) {
int result = -1;
if (getConn() == null) {
return result;
}
try {
ps = conn.prepareStatement(sql);
result = ps.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
return result;
}
public int executeUpdate(String sql, Object[] obj) {
int result = -1;
if (getConn() == null) {
return result;
}
try {
ps = conn.prepareStatement(sql);
for (int i = 0; i < obj.length; i++) {
ps.setObject(i + 1, obj[i]);
}
result = ps.executeUpdate();
close();
} catch (SQLException e) {
e.printStackTrace();
}
return result;
}
public ResultSet executeQuery(String sql) {
if (getConn() == null) {
return null;
}
try {
ps = conn.prepareStatement(sql);
rs = ps.executeQuery();
} catch (SQLException e) {
e.printStackTrace();
}
return rs;
}
public ResultSet executeQuery(String sql, Object[] obj) {
if (getConn() == null) {
return null;
}
try {
ps = conn.prepareStatement(sql);
for (int i = 0; i < obj.length; i++) {
ps.setObject(i + 1, obj[i]);
}
rs = ps.executeQuery();
} catch (SQLException e) {
e.printStackTrace();
}
return rs;
}
private Connection getConn() {
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();
}
return conn;
}
public void close() {
try {
if (rs != null) {
rs.close();
}
if (ps != null) {
ps.close();
}
if (conn != null) {
conn.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}5、 dao：主要调用DBUtil操作相应的model--增删改查
BaseDAO.java
/**
* 项目名：student
* 修改历史：
* 作者： MZ
* 创建时间： 2016年1月6日-上午10:04:37
*/
package com.student.base;
import java.sql.ResultSet;
import java.sql.SQLException;
import com.student.DAO;
import com.student.dao.AdminDAO;
import com.student.dao.StudentDAO;
import com.student.util.DBUtil;
/**
* 模块说明： DAO基类
*
*/
public abstract class BaseDAO {
protected final DBUtil db = DBUtil.getDBUtil();
protected ResultSet rs;
private static BaseDAO baseDAO;
public BaseDAO() {
init();
}
private void init() {
// buildAbilityDAO();
}
// protected abstract void buildAbilityDAO();
public static synchronized BaseDAO getAbilityDAO(DAO dao) {
switch (dao) {
case AdminDAO:
if (baseDAO == null || baseDAO.getClass() != AdminDAO.class) {
baseDAO = AdminDAO.getInstance();
}
break;
case StudentDAO:
if (baseDAO == null || baseDAO.getClass() != StudentDAO.class) {
baseDAO = StudentDAO.getInstance();
}
break;
default:
break;
}
return baseDAO;
}
protected void destroy() {
try {
if (rs != null) {
rs.close();
}
} catch (SQLException se) {
se.printStackTrace();
} finally {
db.close();
}
}
}AdminDAO.java
/**
* 项目名：student
* 修改历史：
* 作者： MZ
* 创建时间： 2016年1月6日-上午9:59:58
*/
package com.student.dao;
import java.sql.SQLException;
import com.student.base.BaseDAO;
/**
* 模块说明： 管理员增删改查
*
*/
public class AdminDAO extends BaseDAO {
private static AdminDAO ad = null;
public static synchronized AdminDAO getInstance() {
if (ad == null) {
ad = new AdminDAO();
}
return ad;
}
public boolean queryForLogin(String username, String password) {
boolean result = false;
if (username.length() == 0 || password.length() == 0) {
return result;
}
String sql = "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();
}
return result;
}
}StudentDAO.java
/**
* 项目名：student
* 修改历史：
* 作者： MZ
* 创建时间： 2016年1月6日-上午10:00:07
*/
package com.student.dao;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import com.student.base.BaseDAO;
import com.student.model.Student;
/**
* 模块说明： 学生增删改查
*
*/
public class StudentDAO extends BaseDAO {
private final int fieldNum = 9;
private final int showNum = 15;
private static StudentDAO sd = null;
public static synchronized StudentDAO getInstance() {
if (sd == null) {
sd = new StudentDAO();
}
return sd;
}
// update
public boolean update(Student stu) {
boolean result = false;
if (stu == null) {
return result;
}
try {
// check
if (queryBySno(stu.getSno()) == 0) {
return result;
}
// 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() };
int rowCount = db.executeUpdate(sql, param);
if (rowCount == 1) {
result = true;
}
} catch (SQLException se) {
se.printStackTrace();
} finally {
destroy();
}
return result;
}
// delete
public boolean delete(Student stu) {
boolean result = false;
if (stu == null) {
return result;
}
String sql = "delete from student where name=? and sno=?";
String[] param = { stu.getName(), stu.getSno() };
int rowCount = db.executeUpdate(sql, param);
if (rowCount == 1) {
result = true;
}
destroy();
return result;
}
// add
public boolean add(Student stu) {
boolean result = false;
if (stu == null) {
return result;
}
try {
// check
if (queryBySno(stu.getSno()) == 1) {
return result;
}
// 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();
}
return result;
}
// query by name
public String[][] queryByName(String name) {
String[][] result = null;
if (name.length() < 0) {
return result;
}
List stus = new ArrayList();
int i = 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 = new String[stus.size()][fieldNum];
for (int j = 0; j < stus.size(); j++) {
buildResult(result, stus, j);
}
}
} catch (SQLException se) {
se.printStackTrace();
} finally {
destroy();
}
return result;
}
// query
public String[][] list(int pageNum) {
String[][] result = null;
if (pageNum < 1) {
return result;
}
List stus = new ArrayList();
int i = 0;
int beginNum = (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 = new String[stus.size()][fieldNum];
for (int j = 0; j < stus.size(); j++) {
buildResult(result, stus, j);
}
}
} catch (SQLException se) {
se.printStackTrace();
} finally {
destroy();
}
return result;
}
// 将rs记录添加到list中
private void buildList(ResultSet rs, List list, int i) throws SQLException {
Student stu = new Student();
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);
}
// 将list中记录添加到二维数组中
private void buildResult(String[][] result, List stus, int j) {
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
private int queryBySno(String sno) throws SQLException {
int result = 0;
if ("".equals(sno) || sno == null) {
return result;
}
String checkSql = "select * from student where sno=?";
String[] checkParam = { sno };
rs = db.executeQuery(checkSql, checkParam);
if (rs.next()) {
result = 1;
}
return result;
}
} 6、 view：与用户交互的界面（包括LoginView.java、MainView.java、AddView.java、DeleteView.java、UpdateView.java），主要使用DAO提供的接口，由于篇幅原因，仅列出MainView即首页。
/**
* 项目名：student
* 修改历史：
* 作者： MZ
* 创建时间： 2016年1月6日-下午1:37:39
*/
package com.student.view;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
import com.student.AppConstants;
import com.student.DAO;
import com.student.base.BaseDAO;
import com.student.dao.StudentDAO;
/**
* 模块说明： 首页
*
*/
public class MainView extends JFrame {
private static final long serialVersionUID = 5870864087464173884L;
private final int maxPageNum = 99;
private JPanel jPanelNorth, jPanelSouth, jPanelCenter;
private JButton jButtonFirst, jButtonLast, jButtonNext, jButtonPre, jButtonAdd, jButtonDelete, jButtonUpdate,
jButtonFind;
private JLabel currPageNumJLabel;
private JTextField condition;
public static JTable jTable;
private JScrollPane jScrollPane;
private DefaultTableModel myTableModel;
public static String[] 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 };
public static int currPageNum = 1;
public MainView() {
init();
}
private void init() {
setTitle(AppConstants.MAINVIEW_TITLE);
// north panel
jPanelNorth = new JPanel();
jPanelNorth.setLayout(new GridLayout(1, 5));
condition = new JTextField(AppConstants.PARAM_FIND_CONDITION);
condition.addKeyListener(new FindListener());
jPanelNorth.add(condition);
// query by name
jButtonFind = new JButton(AppConstants.PARAM_FIND);
jButtonFind.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
find();
}
});
jButtonFind.addKeyListener(new FindListener());
// add
jPanelNorth.add(jButtonFind);
jButtonAdd = new JButton(AppConstants.PARAM_ADD);
jButtonAdd.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new AddView();
}
});
jPanelNorth.add(jButtonAdd);
// delete
jButtonDelete = new JButton(AppConstants.PARAM_DELETE);
jButtonDelete.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new DeleteView();
}
});
jPanelNorth.add(jButtonDelete);
// update
jButtonUpdate = new JButton(AppConstants.PARAM_UPDATE);
jButtonUpdate.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new UpdateView();
}
});
jPanelNorth.add(jButtonUpdate);
// center panel
jPanelCenter = new JPanel();
jPanelCenter.setLayout(new GridLayout(1, 1));
// init jTable
String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);
myTableModel = new DefaultTableModel(result, column);
jTable = new JTable(myTableModel);
DefaultTableCellRenderer cr = new DefaultTableCellRenderer();
cr.setHorizontalAlignment(JLabel.CENTER);
jTable.setDefaultRenderer(Object.class, cr);
initJTable(jTable, result);
jScrollPane = new JScrollPane(jTable);
jPanelCenter.add(jScrollPane);
// south panel
jPanelSouth = new JPanel();
jPanelSouth.setLayout(new GridLayout(1, 5));
jButtonFirst = new JButton(AppConstants.MAINVIEW_FIRST);
jButtonFirst.addActionListener(new ActionListener() {
@Override
public void actionPerformed(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 = new JButton(AppConstants.MAINVIEW_PRE);
jButtonPre.addActionListener(new ActionListener() {
@Override
public void actionPerformed(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 = new JButton(AppConstants.MAINVIEW_NEXT);
jButtonNext.addActionListener(new ActionListener() {
@Override
public void actionPerformed(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 = new JButton(AppConstants.MAINVIEW_LAST);
jButtonLast.addActionListener(new ActionListener() {
@Override
public void actionPerformed(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 = new JLabel(
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);
}
public static void initJTable(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);
}
private class FindListener extends KeyAdapter {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
find();
}
}
}
private void find() {
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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