门户网站首页模板,海城百度公司 海城网站建设,做企业网站有什么好处,网站建设维护和服务合同基于Java swingMySQL实现学生信息管理系统#xff1a;主要实现JDBC对学生信息进行增删改查#xff0c;应付一般课设足矣#xff0c;分享给大家。源码#xff1a;https://github.com/ZhuangM/student.git1、 开发环境#xff1a;jdk7MySQL5win7代码结构#xff1a;model-d…基于Java swingMySQL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。源码https://github.com/ZhuangM/student.git1、 开发环境jdk7MySQL5win7代码结构model-dao-view2、 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)) ENGINEInnoDB AUTO_INCREMENT2 DEFAULT CHARSETutf8;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)) ENGINEInnoDB AUTO_INCREMENT22 DEFAULT CHARSETutf8;LOCK TABLES student WRITE;INSERT INTO student VALUES (18,张三,001,信息科学技术学院,辽宁,80,zhangsan163.com,13888888888,男),(19,李四,002,理学院,上海,70,lisisina.com,13812341234,男),(20,王五,003,外国语学院,北京,88,wangwu126.com,13698765432,女);UNLOCK TABLES;3、model——管理员、学生/*** 项目名student* 修改历史*/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*/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*/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*/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*/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*/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*/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
