java课程设计(学生信息管理系统设计)+数据库
一个大不遛 2024-06-28 15:05:02 阅读 81
🔍 🔎 本期带领大家一起来学习java课程设计(学生信息管理系统设计)+数据库的实现思路 🔍 🔎
文章目录
题目要求+数据库🌍一 、环境搭建🌍二 、功能实现 🌎 🌍1.学生信息类的创建✅2.学生信息的添加功能✅✅3.学生信息的删除功能✅✅✅4.学生信息的修改功能 ✅✅✅✅5.学生信息的查看功能✅✅✅✅✅
三、主类的调用🌍 🌎 🌏1、 登录界面🛸2、 界面搭建🛸🛸
四、 Extents的相关善后操作🌎 🌏 🌎 🌏五、 数据库的连接🌍 🌎🌏 🌍 🌎 🌏六 、感谢与交流🌍 🌎 🌏 🌍 🌎 🌏
题目要求+数据库🌍
学生信息包括:学号,姓名,年龄,性别,出生年月,地址,电话,E-mail等。试设计学生信息管理系统,使之能提供以下功能:
1、系统以菜单方式工作
2、学生信息录入功能--输入
3、学生信息浏览功能--输出
4、学生信息查询功能--算法
按学号查询
按姓名查询
5、学生信息的删除与修改(可选项)
一 、环境搭建🌍
在idea创建一个工程文件,在工程文件下创建一个model模块,在model模块下创建一个classSystem包,然后再存放对应的类,如下图所示
需要注意是因为连接了数据库,所以需要导入相应的jar包
二 、功能实现 🌎 🌍
1.学生信息类的创建✅
首先实现这个学生信息管理系统,我们需要先创建一个学生信息类
,包括学生的学号,姓名,年龄,地址,电话,邮箱,出生日期,具体代码如下✈️ 🛫 🛬
package classSystem;
public class Student {
private int stuId;
private String name;
private int age;
private String sex;
private String birth;
private String address;
private String tel;
private String Email;
public Student() {
}
public Student(int stuId, String name, int age, String sex, String birth, String address, String tel, String email) {
this.stuId = stuId;
this.name = name;
this.age = age;
this.sex = sex;
this.birth = birth;
this.address = address;
this.tel = tel;
Email = email;
}
public int getStuId() {
return stuId;
}
public void setStuId(int stuId) {
this.stuId = stuId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getBirth() {
return birth;
}
public void setBirth(String birth) {
this.birth = birth;
}
public String getTel() {
return tel;
}
public void setTel(String tel) {
this.tel = tel;
}
public String getEmail() {
return Email;
}
public void setEmail(String email) {
Email = email;
}
}
2.学生信息的添加功能✅✅
🔍 🔎因为这个学生信息管理系统的java程序是连接了数据库,所以我们在录入我们的信息的时候,需要讲我们所录入的学生信息存放到数据库当中,所以我们需要运用到sql语句
去添加我们所录入的信息,做到了随时随地可以查询,更好地管理我们的学生信息🔍 🔎
public static void addStu(ArrayList<Student> stu) throws AWTException {
while (true) {
Extents.clearConsole();
System.out.println(">首界面>功能界面>添加学生信息\n\n");
Scanner sc = new Scanner(System.in);
System.out.print("请输入学生学号(例:2022): ");
int stuId=sc.nextInt();
System.out.print("请输入学生姓名(例:张三): ");
String name = sc.next();
System.out.print("请输入学生年龄(例:18): ");
int age = sc.nextInt();
System.out.print("请输入学生性别(例:男): ");
String sex =sc.next();
System.out.print("请输入学生出生日期(例:2004-6-1): ");
String birth =sc.next();
System.out.print("请输入学生电话(例:123456): ");
String tel=sc.next();
System.out.print("请输入学生email(例:123456@qq.com): ");
String emial =sc.next();
System.out.print("请输入学生地址(例:深圳): ");
String address = sc.next();
System.out.println("\n\n-----------------------------------------------------");
System.out.println( "\t\t学号: "+stuId+"\t\t姓名: " + name + "\t\t年龄: " + age + "\t\t地址: " + address
+"\t\t性别: " +sex+"\t\t出生日期: " +birth+"\t\t地址: " +address+"\t\t电话: " +tel+"\t\t邮箱: " +emial);
System.out.print("\n\n是否添加该学生信息? [Yes(1) / No(0)] :");
Extents.isAdd(stu, sc, stuId,sex,birth,tel,emial, name, age, address);
System.out.println("\n\n\n>首界面>功能界面>添加学生信息\n");
System.out.println("\t 继续添加 请输入1 ");
System.out.println();
System.out.println("\t 返回上级 请输入0 ");
System.out.println("\t ---------------------------------------------------------------");
System.out.print("\n请输入您的选择:");
while (true) {
int choose = sc.nextInt();
if (choose == 1) {
break;
} else if (choose == 0) {
Extents.clearConsole();
return;
} else {
System.out.print("看清选项! 再给你一次机会: ");
}
}
}
}
public static void isAdd(ArrayList<Student> stu, Scanner sc,int stuId ,String sex,String birth,String tel,String email, String name, int age, String address) throws AWTException {
while (true) {
int is = sc.nextInt();
if (is == 0) {
Extents.clearConsole();
System.out.println("取消成功!");
break;
} else if (is == 1) {
/*Student s = new Student(stuId,name, age,sex,birth, address,tel,email);
stu.add(s);*/
Connection connection =null;
String sql ="insert into Student values(?,?,?,?,?,?,?,?)";
PreparedStatement preparedStatement=null;
try {
connection = jdbcUtiles.getConnection();
preparedStatement = connection.prepareStatement(sql);
preparedStatement.setInt(1,stuId);
preparedStatement.setString(2,name);
preparedStatement.setInt(3,age);
preparedStatement.setString(4,sex);
preparedStatement.setString(5,address);
preparedStatement.setString(6,birth);
preparedStatement.setString(7,tel);
preparedStatement.setString(8,email);
//执行
preparedStatement.executeUpdate();
} catch (SQLException e) {
throw new RuntimeException(e);
}finally {
jdbcUtiles.close(null,preparedStatement,connection);
}
stuId += 1;
Extents.clearConsole();
System.out.println("添加信息成功!\n\n");
FunctionalBlock.showStu(stu);
break;
}
System.out.print("\n输入错误!请重新输入:");
}
}
相信大家看到这里会有点迷惑,那么现在我来梳理一下增加信息代码块的实现逻辑
首先我们先在FunctionalBlock当中的addStudan当中录入我们的信息🔑 🔑
然后再调用我们Extens当中的isAdd判断是否录入我们的信息
如果录入信息的话,使用sql语句进行与数据库的连接,并且将信息录入到数据库当中
并且会查询数据库当中的信息🔍 🔎
如果不录入信息的话,那么就取消录入
增加学生信息效果图如下
3.学生信息的删除功能✅✅✅
学生信息的删除功能的实现,先调用FunctionalBlock
当中的showStu的方法展示全部学生的信息💡💡
再选择需要删除的学生信息💡💡
同样先要判断所输入的学号是=是否存在,用到了Extents当中的getFlag的方法
如果不存在,则返回-1,存在的话则进行删除操作
同样用到了sql语句与数据库当中的学生信息进行了交互🔑
public static void deleteStu(ArrayList<Student> stu) throws AWTException {
Scanner sc = new Scanner(System.in);
showStu(stu);
while (true) {
System.out.print("\n请输入要删除的学生学号:");
int sid = sc.nextInt();
sc.nextLine();
int flag = Extents.getFlag(stu, sid);
if (flag == -1) {
System.out.print("\n该学号不存在,请重新输入\n");
} else {
System.out.print("\n是否删除学号为:" + sid + " 的学生信息? [Yes(1) / No(0)] :");
Extents.isDlete(stu, sc, flag);
System.out.println("\n\n\n>首界面>功能界面>删除学生信息\n");
System.out.println("\t 继续删除 请输入1 ");
System.out.println();
System.out.println("\t 返回上级 请输入0 ");
System.out.println("\t ----------------------------------------------------------------");
System.out.print("\n请输入您的选择: ");
while (true) {
int choose = sc.nextInt();
if (choose == 1) {
break;
} else if (choose == 0) {
Extents.clearConsole();
return;
} else {
System.out.print("看清选项! 再给你一次机会: ");
}
}
}
}
}
删除学生信息效果图如下
4.学生信息的修改功能 ✅✅✅✅
修改学生信息的功能呢,和上面删除学生信息 功能的实现类似,我们同样来看看如何实现的
学生信息的修改功能的实现,先调用FunctionalBlock当中的showStu的方法展示全部学生的信息
再选择需要修改的学生学号⌛️ ⏳⌛️ ⏳
同样先要判断所输入的学号是=是否存在,用到了Extents当中的getFlag的方法
如果不存在,则返回-1,存在的话则进行修改操作
再然后输入修改之后的学生信息💡💡
同样用到了sql语句与数据库当中的学生信息进行了交互
public static void updateStu(ArrayList<Student> stu) throws AWTException {
Scanner sc = new Scanner(System.in);
while (true) {
showStu(stu);
System.out.print("\n\n请输入要修改信息的学生学号:");
int sidUpdate = sc.nextInt();
int flag = Extents.getFlag(stu, sidUpdate);
Extents.clearConsole();
if (flag == -1) {
System.out.print("该学号不存在,请重新输入\n\n\n ");
} else {
System.out.println(">首界面>功能界面>修改学生信息\n\n");
System.out.print("请输入学生学号(例:2022: ");
int id=sc.nextInt();
System.out.print("请输入学生姓名(例:张三): ");
String name = sc.next();
System.out.print("请输入学生年龄(例:18): ");
int age = sc.nextInt();
System.out.print("请输入学生性别(例:男): ");
String sex =sc.next();
System.out.print("请输入学生出生日期(例:2004-6-1): ");
String birth =sc.next();
System.out.print("请输入学生电话(例:123456): ");
String tel=sc.next();
System.out.print("请输入学生email(例:123456@qq.com): ");
String emial =sc.next();
System.out.print("请输入学生地址(例:深圳): ");
String address = sc.next();
Extents.clearConsole();
Extents.getFlag(stu, sidUpdate);
Connection connection =null;
String sql ="update Student set stuId=? ,name=?,age=?,sex=?,adress=?,birth=?,tel=?,Email=?where stuId=?";
PreparedStatement preparedStatement=null;
try {
connection = jdbcUtiles.getConnection();
preparedStatement = connection.prepareStatement(sql);
preparedStatement.setInt(1,id);
preparedStatement.setString(2,name);
preparedStatement.setInt(3,age);
preparedStatement.setString(4,sex);
preparedStatement.setString(5,address);
preparedStatement.setString(6,birth);
preparedStatement.setString(7,tel);
preparedStatement.setString(8,emial);
preparedStatement.setInt(9,flag);
//执行
preparedStatement.executeUpdate();
} catch (SQLException e) {
throw new RuntimeException(e);
}finally {
jdbcUtiles.close(null,preparedStatement,connection);
}
System.out.println(">首界面>功能界面>修改学生信息");
System.out.println("\n\n------------------------------------------------------------------");
System.out.println("修改后——>\n");
System.out.println( "\t\t姓名: " + name + "\t\t年龄: " + age + "\t\t地址: " + address
+"\t\t性别: " +sex+"\t\t出生日期: " +birth+"\t\t地址: " +address+"\t\t电话: " +tel+"\t\t邮箱: " +emial);
System.out.print("\n\n是否修改该学生信息? [Yes(1) / No(0)] :");
Extents.isUpdata(stu, sc, sidUpdate, flag,sex,birth,tel,emial, name, age, address);
System.out.println("\n\n\n>首界面>功能界面>修改学生信息\n");
System.out.println("\t 继续修改 请输入1 ");
System.out.println();
System.out.println("\t 返回上级 请输入0 ");
System.out.println("\t --------------------------------------------------------------");
System.out.print("\n请输入您的选择:");
while (true) {
int choose = sc.nextInt();
if (choose == 1) {
Extents.clearConsole();
break;
} else if (choose == 0) {
Extents.clearConsole();
return;
} else {
System.out.print("看清选项! 再给你一次机会: ");
}
}
}
}
}
修改学生信息效果图如下
5.学生信息的查看功能✅✅✅✅✅
由于查看学生信息的功能在前面三个功能当中都有调用⌛️ ⏳⌛️ ⏳
所以我们为了使得代码更加简洁,将查询学生信息的功能封装起来了
避免了代码的冗余
同样我们来看看到底是如何实现的
因为我们的程序是连接了数据库,所以我们需要查询学生的信息的时候⌛️ ⏳⌛️ ⏳
需要用到查询的sql语句进行查询,同我们的数据库进行交互
public static void showStu(ArrayList<Student> stu) {
System.out.println("1.按学号查询");
System.out.println("2.按姓名查询");
System.out.println("3.查询全部 ");
Scanner sc =new Scanner(System.in);
int input=sc.nextInt();
if(input==1){
System.out.print("输入需要查询的学生学号:");
int stuid=sc.nextInt();
Connection connection =null;
String sql="select stuId,name,age,sex,adress,birth,tel,Email from Student where stuId=?";
PreparedStatement preparedStatement=null;
ResultSet set=null;
try {
connection = jdbcUtiles.getConnection();
preparedStatement = connection.prepareStatement(sql);
preparedStatement.setInt(1,stuid);
//执行
set = preparedStatement.executeQuery();
while(set.next()){
int id=set.getInt("stuId");
String name=set.getString("name");
int age =set.getInt("age");
String sex =set.getString("sex");
String address=set.getString("adress");
String birth=set.getString("birth");
String tel=set.getString("tel");
String email=set.getString("Email");
System.out.println("\t\t" + id + " \t\t\t" + name
+ " \t\t\t" + age + " \t\t\t" + sex +" \t\t\t" + address +
" \t\t\t" + birth+ " \t\t\t" + tel +" \t\t\t" + email +
" \t\t\t" + "\n");
}
} catch (SQLException e) {
throw new RuntimeException(e);
}finally {
jdbcUtiles.close(set,preparedStatement,connection);
}
} else if (input==2) {
System.out.print("输入需要查询的学生名字:");
String stuname=sc.next();
Connection connection =null;
String sql="select stuId,name,age,sex,adress,birth,tel,Email from Student where name=?";
PreparedStatement preparedStatement=null;
ResultSet set=null;
try {
connection = jdbcUtiles.getConnection();
preparedStatement = connection.prepareStatement(sql);
preparedStatement.setString(1,stuname);
//执行
set = preparedStatement.executeQuery();
while(set.next()){
int id=set.getInt("stuId");
String name=set.getString("name");
int age =set.getInt("age");
String sex =set.getString("sex");
String address=set.getString("adress");
String birth=set.getString("birth");
String tel=set.getString("tel");
String email=set.getString("Email");
System.out.println("\t\t" + id + " \t\t\t" + name
+ " \t\t\t" + age + " \t\t\t" + sex +" \t\t\t" + address +
" \t\t\t" + birth+ " \t\t\t" + tel +" \t\t\t" + email +
" \t\t\t" + "\n");
}
} catch (SQLException e) {
throw new RuntimeException(e);
}finally {
jdbcUtiles.close(set,preparedStatement,connection);
}
}else{
System.out.println(">学生信息显示\n");
System.out.println("\t --------------------------------------------------------------------------------------------------------");
System.out.println("\t 学号\t\t" + " 姓名\t\t" + " \t年龄\t" + "\t\t性别" + " \t\t\t地址"+
" \t\t\t出生日期"+" \t\t\t电话"+" \t\t\t邮箱" );
System.out.println("\t ------------------------------------------------------------------------------------------------------");
Connection connection =null;
String sql="select * from Student";
PreparedStatement preparedStatement=null;
ResultSet set=null;
try {
connection = jdbcUtiles.getConnection();
preparedStatement = connection.prepareStatement(sql);
//执行
set = preparedStatement.executeQuery();
while(set.next()){
int id=set.getInt("stuId");
String name=set.getString("name");
int age =set.getInt("age");
String sex =set.getString("sex");
String address=set.getString("adress");
String birth=set.getString("birth");
String tel=set.getString("tel");
String email=set.getString("Email");
System.out.println("\t\t" + id + " \t\t\t" + name
+ " \t\t\t" + age + " \t\t\t" + sex +" \t\t\t" + address +
" \t\t\t" + birth+ " \t\t\t" + tel +" \t\t\t" + email +
" \t\t\t" + "\n");
}
} catch (SQLException e) {
throw new RuntimeException(e);
}finally {
jdbcUtiles.close(set,preparedStatement,connection);
}
System.out.println("\t ------------------------------------" +
"------------------------------------------------------------------");
}
}
查询学生信息效果图如下
三、主类的调用🌍 🌎 🌏
1、 登录界面🛸
首先出现登陆的界面,我们需要输入我们的用户名和密码,然后判断是否正确
正确的话则执行下一步操作🍗 🍖 🦴
public static void interFace() throws AWTException {
System.out.println(">首界面\n");
System.out.println("\t*****************************************************************");
System.out.println("\t 首界面 ");
System.out.println("\t ---------------------------------------------------------------");
System.out.println("\t 开始登录 请输入1 ");
System.out.println("\t ---------------------------------------------------------------");
System.out.println("\t 退出 请输入0 ");
System.out.println("\t*****************************************************************");
Scanner sc = new Scanner(System.in);
System.out.print("\n请输入您的选择: ");
while (true) {
int choose = sc.nextInt();
if (choose == 1) {
register();
break;
} else if (choose == 0) {
System.out.println("退出成功!");
System.exit(0);
} else {
System.out.print("看清选项! 再给你一次机会:");
}
}
}
public static void register() throws AWTException {
for (int i = COUNT; i >= 0; i--) {
Scanner sc = new Scanner(System.in);
System.out.print("请输入您的用户名: ");
String loginSid = sc.nextLine();
System.out.print("请输入您的密码: ");
String loginPassWd = sc.nextLine();
if (loginSid.equals(MYSID) && loginPassWd.equals(MYPASSWD)) {
Extents.clearConsole();
System.out.println("欢迎登录! 用户:" + MYSID + "\n\n");
menu();
break;
} else {
if (i == 0) {
System.out.println("你是不是傻!");
System.exit(0);
}
System.out.println("错了错了, 你还有 " + i + " 次机会");
}
}
}
2、 界面搭建🛸🛸
public static void menu() throws AWTException {
ArrayList<Student> stu = new ArrayList<>();
while (true) {
System.out.println(">首界面>功能界面\n");
System.out.println("\t*****************************************************************");
System.out.println("\t 欢迎来到学生管理系统! ");
System.out.println("\t ---------------------------------------------------------------");
System.out.println("\t 1.添加学生信息 ");
System.out.println("\t ---------------------------------------------------------------");
System.out.println("\t 2.删除学生信息 ");
System.out.println("\t ---------------------------------------------------------------");
System.out.println("\t 3.修改学生信息 ");
System.out.println("\t ---------------------------------------------------------------");
System.out.println("\t 4.查看学生信息 ");
System.out.println("\t ---------------------------------------------------------------");
System.out.println("\t q:返回上级菜单 p:退出管理系统 ");
System.out.println("\t******************************************************************");
Scanner sc = new Scanner(System.in);
System.out.print("\n请输入您的选择:");
String choose = sc.nextLine();
switch (choose) {
case "1":
FunctionalBlock.addStu(stu);
break;
case "2":
Extents.clearConsole();
FunctionalBlock.deleteStu(stu);
break;
case "3":
Extents.clearConsole();
FunctionalBlock.updateStu(stu);
break;
case "4":
Extents.clearConsole();
FunctionalBlock.showStu(stu);
Extents.isShow(sc);
break;
case "q":
Extents.clearConsole();
interFace();
return;
case "p":
System.out.println("退出成功!");
System.exit(0);
default:
Extents.clearConsole();
System.out.println("这都错!看清选项再选\n\n\n");
break;
}
}
}
四、 Extents的相关善后操作🌎 🌏 🌎 🌏
Extents是完成相关的善后操作,是对FunctionalBlock里面功能实现的相关善后的操作
目的是为了使得更加程序逻辑清晰🍗 🍖 🦴
package classSystem;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Scanner;
public class Extents {
public static void isAdd(ArrayList<Student> stu, Scanner sc,int stuId ,String sex,String birth,String tel,String email, String name, int age, String address) throws AWTException {
while (true) {
int is = sc.nextInt();
if (is == 0) {
Extents.clearConsole();
System.out.println("取消成功!");
break;
} else if (is == 1) {
/*Student s = new Student(stuId,name, age,sex,birth, address,tel,email);
stu.add(s);*/
Connection connection =null;
String sql ="insert into Student values(?,?,?,?,?,?,?,?)";
PreparedStatement preparedStatement=null;
try {
connection = jdbcUtiles.getConnection();
preparedStatement = connection.prepareStatement(sql);
preparedStatement.setInt(1,stuId);
preparedStatement.setString(2,name);
preparedStatement.setInt(3,age);
preparedStatement.setString(4,sex);
preparedStatement.setString(5,address);
preparedStatement.setString(6,birth);
preparedStatement.setString(7,tel);
preparedStatement.setString(8,email);
//执行
preparedStatement.executeUpdate();
} catch (SQLException e) {
throw new RuntimeException(e);
}finally {
jdbcUtiles.close(null,preparedStatement,connection);
}
stuId += 1;
Extents.clearConsole();
System.out.println("添加信息成功!\n\n");
FunctionalBlock.showStu(stu);
break;
}
System.out.print("\n输入错误!请重新输入:");
}
}
public static void isDlete(ArrayList<Student> stu, Scanner sc, int flag) throws AWTException {
while (true) {
int is = sc.nextInt();
if (is == 0) {
Extents.clearConsole();
System.out.println("取消成功!");
break;
} else if (is == 1) {
Connection connection =null;
String sql ="delete from Student where stuId=?";
PreparedStatement preparedStatement=null;
try {
connection = jdbcUtiles.getConnection();
preparedStatement = connection.prepareStatement(sql);
preparedStatement.setInt(1,flag);
//执行
preparedStatement.executeUpdate();
} catch (SQLException e) {
throw new RuntimeException(e);
}finally {
jdbcUtiles.close(null,preparedStatement,connection);
}
Extents.clearConsole();
System.out.println("删除学生信息成功!\n\n");
FunctionalBlock.showStu(stu);
break;
}
System.out.print("\n输入错误!请重新输入:");
}
}
public static void isUpdata(ArrayList<Student> stu, Scanner sc, int sidUpdate, int flag, String sex,String birth,String tel,String email, String name, int age, String address) throws AWTException {
while (true) {
int is = sc.nextInt();
if (is == 0) {
Extents.clearConsole();
System.out.println("取消成功!");
break;
} else if (is == 1) {
Student newStu = new Student(sidUpdate, name,age,sex,birth,address, tel,email);
Extents.clearConsole();
System.out.println("修改学生信息成功!\n\n");
FunctionalBlock.showStu(stu);
break;
}
System.out.print("\n输入错误!请重新输入:");
}
}
public static void isShow(Scanner sc) throws AWTException {
System.out.println("\n\n\n>首界面>功能界面>查看学生信息\n\n");
System.out.println("\t 返回上级 请输入0 ");
System.out.println("\t ---------------------------------------------------------------");
System.out.print("\n请输入您的选择: ");
while (true) {
int choose1 = sc.nextInt();
if (choose1 == 0) {
Extents.clearConsole();
break;
} else {
System.out.print("看清选项! 再给你一次机会: ");
}
}
}
public static int getFlag(ArrayList<Student> stu, int sid) {
Connection connection =null;
String sql="select * from Student";
PreparedStatement preparedStatement=null;
ResultSet set=null;
try {
connection = jdbcUtiles.getConnection();
preparedStatement = connection.prepareStatement(sql);
//执行
set = preparedStatement.executeQuery();
while(set.next()){
int id =set.getInt("stuId");
if(sid==id){
return id;
}
}
return -1;
} catch (SQLException e) {
throw new RuntimeException(e);
}finally {
jdbcUtiles.close(set,preparedStatement,connection);
}
}
public static void clearConsole() throws AWTException {
Robot r = new Robot();
// 按下Ctrl键
r.keyPress(KeyEvent.VK_CONTROL);
// 按下R键
r.keyPress(KeyEvent.VK_R);
// 释放R键
r.keyRelease(KeyEvent.VK_R);
// 释放Ctrl键
r.keyRelease(KeyEvent.VK_CONTROL);
r.delay(50);
}
}
五、 数据库的连接🌍 🌎🌏 🌍 🌎 🌏
毕竟我们的这个项目是要连接到数据库当中的
🚴🏼♂️ 🚵🏼♀️所以我们需要手动操作完成数据库连接的相关代码 🚴🏼♂️ 🚵🏼♀️
package classSystem;
import java.io.FileInputStream;
import java.io.IOException;
import java.sql.*;
import java.util.Properties;
public class jdbcUtiles {
//工具类,连接mysql的连接和关闭
private static String user;
private static String password;
private static String url;
private static String driver;
static {
Properties properties =new Properties();
try {
properties.load(new FileInputStream("src\\mysql.properties"));
//读取相关属性
user=properties.getProperty("uesr");
password =properties.getProperty("password");
url=properties.getProperty("url");
driver = properties.getProperty("driver");
} catch (IOException e) {
throw new RuntimeException(e);
}
}
//连接数据库
public static Connection getConnection(){
try {
return DriverManager.getConnection(url,user,password);
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
//关闭相关资源
public static void close(ResultSet set, PreparedStatement preparedStatement,Connection connection){
try {
if(set!=null){
set.close();
}
if(preparedStatement!=null){
preparedStatement.close();
}
if(connection!=null){
connection.close();
}
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
}
六 、感谢与交流🌍 🌎 🌏 🌍 🌎 🌏
🌹🌹🌹如果大家通过本篇博客收获了,对通过ava实现学生课程管理系统(数据库)
有了更好的了解的话
那么希望支持一下哦如果还有不明白的,疑惑的话,或者什么比较好的建议的话,可以发到评论区,
我们一起解决,共同进步 ❗️❗️❗️
最后谢谢大家❗️❗️❗️💯💯💯
声明
本文内容仅代表作者观点,或转载于其他网站,本站不以此文作为商业用途
如有涉及侵权,请联系本站进行删除
转载本站原创文章,请注明来源及作者。