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xixu-me committed 2024-05-29 17:00:17 +08:00
1 parent 34f68b1fe9
commit ba46ad52f6
9 files changed
+119 -144
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bin/finalexam/Database/PasswordChange.class
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bin/finalexam/Database/ProductAdditionAndInquiry.class
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bin/finalexam/Database/UserLogin.class
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src/finalexam/Database/CashierStatistics.java
+1 -1
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@@ -71,4 +71,4 @@ public class CashierStatistics {
pstmt.close();
conn.close();
}
}
}
src/finalexam/Database/PasswordChange.java
+53 -66
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@@ -4,81 +4,68 @@ import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class PasswordChange {
static final String DBURL = "jdbc:mysql://localhost:3306/xiaoshou?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT";
private static final String DBDRIVER = "com.mysql.cj.jdbc.Driver";
private static final String DBURL = "jdbc:mysql://localhost:3306/xiaoshou?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT";
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
Connection conn = null;
public static void main(String[] args) throws Exception {
Class.forName(DBDRIVER);
Connection conn = DriverManager.getConnection(DBURL);
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
Class.forName("com.mysql.cj.jdbc.Driver");
conn = DriverManager.getConnection(DBURL);
System.out.print("请输入用户名：");
String username = scanner.nextLine();
String checkUserSql = "SELECT xingming FROM t_yong WHERE yonghuming=?";
pstmt = conn.prepareStatement(checkUserSql);
pstmt.setString(1, username);
rs = pstmt.executeQuery();
if (!rs.next()) {
System.out.println("该用户不存在，请重新输入");
return;
}
System.out.print("请输入当前用户的原密码：");
String oldPassword = scanner.nextLine();
String checkPasswordSql = "SELECT xingming FROM t_yong WHERE yonghuming=? AND mima=MD5(?)";
pstmt = conn.prepareStatement(checkPasswordSql);
pstmt.setString(1, username);
pstmt.setString(2, oldPassword);
rs = pstmt.executeQuery();
if (!rs.next()) {
System.out.println("原密码输入不正确，请重新输入");
return;
}
String newPassword;
while (true) {
System.out.print("请设置新的密码：");
newPassword = scanner.nextLine();
if (!isPasswordComplex(newPassword))
System.out.println("您的密码不符合复杂性要求（密码长度不少于6个字符，至少有一个小写字母，至少有一个大写字母，至少一个数字），请重新输入：");
else
break;
}
System.out.print("请输入确认密码：");
String confirmPassword = scanner.nextLine();
if (!newPassword.equals(confirmPassword)) {
System.out.println("两次输入的密码必须一致，请重新输入确认密码：");
return;
}
String updatePasswordSql = "UPDATE t_yong SET mima=? WHERE yonghuming=?";
pstmt = conn.prepareStatement(updatePasswordSql);
pstmt.setString(1, Encrypt.MD5(newPassword));
pstmt.setString(2, username);
int result = pstmt.executeUpdate();
if (result > 0)
System.out.println("您已成功修改密码，请谨记");
else
System.out.println("密码修改失败，请重试");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (rs != null)
rs.close();
if (pstmt != null)
pstmt.close();
if (conn != null)
conn.close();
} catch (SQLException se) {
se.printStackTrace();
}
Scanner scanner = new Scanner(System.in);
System.out.print("请输入用户名：");
String username = scanner.nextLine();
String checkUserSql = "SELECT xingming FROM t_yong WHERE yonghuming=?";
pstmt = conn.prepareStatement(checkUserSql);
pstmt.setString(1, username);
rs = pstmt.executeQuery();
if (!rs.next()) {
System.out.println("该用户不存在，请重新输入");
return;
}
System.out.print("请输入当前用户的原密码：");
String oldPassword = scanner.nextLine();
String checkPasswordSql = "SELECT xingming FROM t_yong WHERE yonghuming=? AND mima=MD5(?)";
pstmt = conn.prepareStatement(checkPasswordSql);
pstmt.setString(1, username);
pstmt.setString(2, oldPassword);
rs = pstmt.executeQuery();
if (!rs.next()) {
System.out.println("原密码输入不正确，请重新输入");
return;
}
String newPassword;
while (true) {
System.out.print("请设置新的密码：");
newPassword = scanner.nextLine();
if (!isPasswordComplex(newPassword))
System.out.println("您的密码不符合复杂性要求（密码长度不少于6个字符，至少有一个小写字母，至少有一个大写字母，至少一个数字），请重新输入：");
else
break;
}
System.out.print("请输入确认密码：");
String confirmPassword = scanner.nextLine();
if (!newPassword.equals(confirmPassword)) {
System.out.println("两次输入的密码必须一致，请重新输入确认密码：");
return;
}
String updatePasswordSql = "UPDATE t_yong SET mima=? WHERE yonghuming=?";
pstmt = conn.prepareStatement(updatePasswordSql);
pstmt.setString(1, Encrypt.MD5(newPassword));
pstmt.setString(2, username);
int result = pstmt.executeUpdate();
if (result > 0)
System.out.println("您已成功修改密码，请谨记");
else
System.out.println("密码修改失败，请重试");
rs.close();
pstmt.close();
conn.close();
}
public static boolean isPasswordComplex(String password) {
src/finalexam/Database/PermissionJudgment.java
+1 -1
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@@ -74,4 +74,4 @@ public class PermissionJudgment {
pstmt.close();
conn.close();
}
}
}
src/finalexam/Database/ProductAdditionAndInquiry.java
+28 -27
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@@ -9,37 +9,38 @@ import java.sql.SQLException;
import java.util.Scanner;
public class ProductAdditionAndInquiry {
private static final String DBDRIVER = "com.mysql.cj.jdbc.Driver";
private static final String DBURL = "jdbc:mysql://localhost:3306/xiaoshou?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT";
public static void main(String[] args) {
public static void main(String[] args) throws Exception {
Class.forName(DBDRIVER);
Connection conn = DriverManager.getConnection(DBURL);
Scanner scanner = new Scanner(System.in);
int choice;
try (Connection conn = DriverManager.getConnection(DBURL)) {
do {
System.out.println("===超市商品管理维护====");
System.out.println("1、输入商品");
System.out.println("2、查询商品");
System.out.println("3、退出");
System.out.print("请选择（1-3）：");
choice = scanner.nextInt();
scanner.nextLine();
switch (choice) {
case 1:
addProduct(scanner, conn);
break;
case 2:
queryProduct(scanner, conn);
break;
case 3:
System.out.println("退出系统");
break;
default:
System.out.println("无效选择，请重新选择（1-3）：");
}
} while (choice != 3);
} catch (SQLException e) {
e.printStackTrace();
}
do {
System.out.println("===超市商品管理维护====");
System.out.println("1、输入商品");
System.out.println("2、查询商品");
System.out.println("3、退出");
System.out.print("请选择（1-3）：");
choice = scanner.nextInt();
scanner.nextLine();
switch (choice) {
case 1:
addProduct(scanner, conn);
break;
case 2:
queryProduct(scanner, conn);
break;
case 3:
System.out.println("退出系统");
break;
default:
System.out.println("无效选择，请重新选择（1-3）：");
}
} while (choice != 3);
conn.close();
}
private static void addProduct(Scanner scanner, Connection conn) throws SQLException {
src/finalexam/Database/ProductModificationAndDeletion.java
+1 -1
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@@ -79,4 +79,4 @@ public class ProductModificationAndDeletion {
pstmt.close();
conn.close();
}
}
}
src/finalexam/Database/UserLogin.java
+35 -48
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@@ -4,63 +4,50 @@ import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;
public class UserLogin {
static final String DBURL = "jdbc:mysql://localhost:3306/xiaoshou?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT";
private static final String DBDRIVER = "com.mysql.cj.jdbc.Driver";
private static final String DBURL = "jdbc:mysql://localhost:3306/xiaoshou?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT";
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
Connection conn = null;
public static void main(String[] args) throws Exception {
Class.forName(DBDRIVER);
Connection conn = DriverManager.getConnection(DBURL);
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
Class.forName("com.mysql.cj.jdbc.Driver");
conn = DriverManager.getConnection(DBURL);
int attempts = 0;
boolean loginSuccess = false;
while (attempts < 3 && !loginSuccess) {
System.out.println("欢迎使用阳光超市收银系统，请登陆");
System.out.print("请输入用户名: ");
String username = scanner.nextLine();
System.out.print("请输入密码: ");
String password = scanner.nextLine();
String sql = "SELECT xingming FROM t_yong WHERE yonghuming=? AND mima=?";
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, username);
pstmt.setString(2, Encrypt.MD5(password));
rs = pstmt.executeQuery();
if (rs.next()) {
loginSuccess = true;
String xingming = rs.getString("xingming");
SimpleDateFormat formatter = new SimpleDateFormat("yyyy年MM月dd日HH时mm分ss秒");
String currentTime = formatter.format(new Date());
System.out.println("欢迎使用阳光超市收银系统");
System.out.println("当前收银员：" + xingming);
System.out.println("当前时间：" + currentTime);
} else {
System.out.println("用户名或密码不正确，请重新输入");
attempts++;
}
}
if (!loginSuccess)
System.out.println("最多只能尝试3次");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (rs != null)
rs.close();
if (pstmt != null)
pstmt.close();
if (conn != null)
conn.close();
} catch (SQLException se) {
se.printStackTrace();
Scanner scanner = new Scanner(System.in);
int attempts = 0;
boolean loginSuccess = false;
while (attempts < 3 && !loginSuccess) {
System.out.println("欢迎使用阳光超市收银系统，请登陆");
System.out.print("请输入用户名: ");
String username = scanner.nextLine();
System.out.print("请输入密码: ");
String password = scanner.nextLine();
String sql = "SELECT xingming FROM t_yong WHERE yonghuming=? AND mima=?";
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, username);
pstmt.setString(2, Encrypt.MD5(password));
rs = pstmt.executeQuery();
if (rs.next()) {
loginSuccess = true;
String xingming = rs.getString("xingming");
SimpleDateFormat formatter = new SimpleDateFormat("yyyy年MM月dd日HH时mm分ss秒");
String currentTime = formatter.format(new Date());
System.out.println("欢迎使用阳光超市收银系统");
System.out.println("当前收银员：" + xingming);
System.out.println("当前时间：" + currentTime);
} else {
System.out.println("用户名或密码不正确，请重新输入");
attempts++;
}
}
if (!loginSuccess)
System.out.println("最多只能尝试3次");
rs.close();
pstmt.close();
conn.close();
}
}