java银行账户管理系统（数据库）

目录

一、系统概述

二、银行相关知识

三、详细分析

（1）管理员

（2）用户

四、拓展功能

五、数据库表

1、用户表

2、Manager表

3、Loan表

4、Movemoney表

一、系统概述

银行账户管理系统：
功能要求：
（1）账户的增、删、查、改、浏览；
（2）存、贷、还
（3）各种类别的统计
（4）账户交易历史的浏览

二、银行相关知识

【中国农业银行的贷款细则】：
小额贷款银行
纯信用无抵押贷款
贷款额度：2~200万元
适合人群：其他职业、国有企业员工、公务员、律师、教师
贷款利率：0.60%
贷款期限：3~36月
还款方式：到期还款
无其他收费
还款方式：
1、等额本息法：每月还款金额=[贷款本金×月利率×（1+月利率）^还款月数]/[（1+月利率）^还款月数-1]
2、等额本金法：（贷款本金/还款月数）+（本金-已归还本金累计额）×每月利率
后续服务：
1、提前还款。在贷款的有效期内，借款人若需提前归还贷款时，需提前向经办行提出书面申请，经经办行同意后，可以提前归还全部或部分贷款本金，已计收的利息不再调整
2、部分提前还款：可以选择下列两种方式：
（1）每期还款额不变、缩短还款期限
（2）还款期限不变、减少每期还款额的方式

三、详细分析

（1）管理员

1、增加账户信息：√
随即分配卡号（12位不重复随机数）
【在增加账户信息的时候，要先检验数据库表中是否已经有该信息，如果有在而无法存入，如果没有，则可以存入】

2、删除账户信息：√
管理员删除账户信息。如果账户中的钱数＞0，那么管理员无法删除账户；如果账户中没有余额并且无贷款或者贷款已经还完了，则可以注销账户。

3、查询账户信息：√
管理员可以输入相应的身份证号码查询账户持有者的个人信息和交易信息

4、修改账户信息：√
管理员可以修改账户信息中的密码、联系电话和邮箱

5、账户的浏览：√
管理员可以浏览所有的账户个人相关信息以及所有的交易记录

6、统计账户信息：√
系统可以统计银行中现存的账户数量、有贷款的账户数量

（2）用户

1、开户：√
用户成功登录该系统之后，可以注册新的银行卡，系统会为用户分配银行卡号。

2、用户存款：√
当用户身份证号码和对应的银行卡号码输入正确之后，才可以进行存款操作。当用户存款成功之后， 账户金额增加，交易历史里增加一条【用户存款】的历史记录。

3、用户取款：√
当用户身份证号码和对应的银行卡号码输入正确之后，并且账户余额＞取款金额时，才可以进行取款操作。当用户取款成功之后，账户金额减少，交易历史里面增加一条【用户取款】的历史记录

4、用户转账：√
当用户转账方的账户不存在时，无法转账；当用户金额大于将要转账金额，无法转账。

5、用户贷款：√
需要记录用户贷款的钱数、开始日期、截止日期、利息、已还款数、【用户贷款】的历史记录。

6、用户还款：√
还款的时候，系统需要验证该用户是否存在贷款，如果该用户存在贷款并且账户余额足够还款，那么只要用户确认还款，系统将自动从该用户的账户中扣钱。
每次还款的历史记录（哪一天还的、还了多少），然后用户需要还款的金额那一栏减去已还款数进行更新；当用户需要还款数为0时，则给出【你已无任何欠款】的提示。
7、用户修改个人信息：√
用户登录系统之后，可以修改自己的登录密码、联系电话和电子邮箱。

8、查看交易记录：√
用户可以查看自己的历史交易记录。

9、用户注销账户：√
如果账户中的钱数＞0，那么用户无法注销账户，如果账户中没有余额并且无贷款或者贷款已经还完了，则可以注销账户。

四、拓展功能

冻结银行卡功能：该功能针对的用户是银行的管理者，当银行卡持有者出现信用缺失等情况时，管理员有权利将其银行卡冻结，银行卡冻结期间，该银行卡的金额只进不出。

银行卡挂失功能：该功能针对的用户的主要普通大众，银行卡的持有者将银行卡挂失之后，该银行卡的金额不进不出。

五、数据库表

本银行账户管理系统主要建立了四个数据库表，分别是：用户（User）表、管理员（manager）表、交易记录（movemoney）表、贷款（loan）表。

1、用户表

User表用来存放用户信息，结构如下表5.11所示

表5.11 User（用户信息表）

2、Manager表

Manager表用来存放管理员信息，结构如下表5.12所示

表5.12 Manager（管理员信息表）

3、Loan表

Loan表用来存放用户贷款的信息，结构如下表5.13所示

表5.13 Loan（贷款信息表）

4、Movemoney表

Movemoney表用来存放用户的历史交易记录，结构如下表5.14所示

表5.14 Movemoney（历史交易记录表）

六、代码

package javaTask;import static java.lang.System.out;import java.sql.*;import java.text.SimpleDateFormat;import java.util.*;import java.util.Date;public class jdbcTest1 {final String driver ="org.hsqldb.jdbcDriver";final String url="jdbc:hsqldb:hsql://localhost/";final String user="sa";final String pass="";privateConnection con;public static void main(String[] args) throws SQLException,Exception{jdbcTest1 demo =new jdbcTest1();demo.init();demo.menu();}public void menu() throws SQLException {@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);while(true) {System.out.println("==============银行账户管理系统==============");System.out.println("1.管理员");System.out.println("2.用户");System.out.println("========================================");System.out.print("请输入你的指令：");int command=sc.nextInt();switch(command) {case 1:managerLogin();break;case 2:user();break;default:System.out.println("输入的指令不存在，请重新输入！");}}}public void managerLogin() throws SQLException {@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);System.out.println("==============管理员操作页面==============");System.out.print("请输入您的账号：");String account=sc.nextLine();if(checkAccount(account)==1) {System.out.print("请输入登录密码：");String code=sc.next();if(checkCode(code)==1) {managerMenu();}else {System.out.println("密码错误，请重新尝试！");}}else {System.out.println("账号错误，请重新尝试！");}}public int checkAccount(String account) throws SQLException {//检验账户int f=0;String sql="select * from manager where account = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, account);ResultSet rs=pstmt.executeQuery();while(rs.next()) {f++;}if(f==1) {return 1;}else {return 0;}}public int checkCode(String code) throws SQLException {int f=0;String sql="select * from manager where code = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, code);ResultSet rs=pstmt.executeQuery();while(rs.next()) {f++;}if(f==1) {return 1;}else {return 0;}}public void user() throws SQLException {@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);System.out.println("==============用户操作页面==============");System.out.println("1.登录");System.out.println("2.注册");System.out.println("3.退出");System.out.println("=====================================");System.out.print("请输入你的指令：");int command=sc.nextInt();switch(command) {case 1:userLogin();break;case 2:userRegister();break;default:System.out.println("输入的指令不存在，请重新输入！");}}public void userLogin() throws SQLException {String cardNum;@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);System.out.println("==============用户登录页面==============");System.out.print("请输入您的身份证号码：");cardNum=sc.nextLine();if(checkcardNum(cardNum)==1) {//检验身份证号码System.out.print("请输入登录密码：");String pwd=sc.nextLine();if(checkPwd(pwd)==1) {System.out.println("【欢迎"+getName(cardNum)+"女士/先生,"+"银行卡号为:"+getBankNum(cardNum)+"使用本系统！】");userMenu();}else {System.out.println("输入的密码错误！");}}else {System.out.println("输入的身份证号码错误！");}}private String getBankNum(String cardNum) throws SQLException {String bankNum=null;String sql="select * from user where cardNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, cardNum);ResultSet rs=pstmt.executeQuery();while(rs.next()) {bankNum=rs.getString(7);}return bankNum;}public void userRegister() throws SQLException {//注册@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);String sql="insert into user values(?,?,?,?,?,?,?,?)";PreparedStatement pstmt=con.prepareStatement(sql);System.out.print("请输入身份证号码：");String cardNum=sc.nextLine();if(checkcardNum(cardNum)==0) {System.out.print("请输入电话号码：");String tel=sc.nextLine();System.out.print("请设置密码：");String pwd=sc.nextLine();System.out.print("请输入电子邮箱：");String email=sc.nextLine();System.out.print("请输入真实姓名：");String relName=sc.nextLine();pstmt.setObject(1, cardNum);pstmt.setObject(2, tel);pstmt.setObject(3, pwd);pstmt.setObject(4, email);pstmt.setObject(5, 0);pstmt.setObject(6, relName);pstmt.setObject(7, "无");pstmt.setObject(8, "无");pstmt.execute();}else {System.out.println("【该身份证号码已经注册过账户，无法再注册！】");}}public String getName(String cardNum) throws SQLException {//获取姓名String name = null;String sql="select * from user where cardNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, cardNum);ResultSet rs=pstmt.executeQuery();while(rs.next()) {name=rs.getString(6);}return name;}public int checkPwd(String pwd) throws SQLException {//检验密码int flag=0;String sql="select * from user where pwd = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, pwd);ResultSet rs=pstmt.executeQuery();while(rs.next()) {flag++;}if(flag==1) {return 1;}else {return 0;}}public void userMenu() throws SQLException{while(true) {@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);System.out.println("==============用户操作页面==============");System.out.println("1.开户");System.out.println("2.存款");System.out.println("3.取款");System.out.println("4.转账");System.out.println("5.贷款");System.out.println("6.还款");System.out.println("7.修改个人信息");System.out.println("8.查看个人信息");System.out.println("9.注销");System.out.println("10.退出");System.out.println("=====================================");System.out.print("请输入你的指令：");int command=sc.nextInt();switch(command) {case 1:openAccount();//开户break;case 2:addMoney();//存款break;case 3:deleteMoney();//取款break;case 4:transferAccount();//转账break;case 5:loan();//贷款break;case 6:returnMoney();//还款break;case 7:correctUser();//修改个人信息break;case 8:userView();//查看信息（个人信息、贷款、交易记录）break;case 9:accountCancel();//注销账户break;case 10:return;default:System.out.println("输入的指令不存在，请重新输入！");}}}public String getTime() {//获取取款、存款结束的时间Date d=new Date();SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM--dd HH:mm:ss");return sdf.format(d);}public double readInitialMoney(String bankNum) throws SQLException {double initialMoney = 0;//未存款前，银行卡中的金额String sql="select * from user where bankNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, bankNum);ResultSet rs=pstmt.executeQuery();while(rs.next()) {initialMoney=rs.getDouble(5);pstmt.execute();}return initialMoney;}public int checkcardNum(String cardNum) throws SQLException {//检查身份证号码是否正确int flag=0;String sql="select * from user where cardNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, cardNum);ResultSet rs=pstmt.executeQuery();while(rs.next()) {flag++;}if(flag==1) {return 1;}else {return 0;}}public int checkCheck(String bankNum) throws SQLException {//检查账户是否存在，检查银行卡号int flag=0;String sql="select * from user where bankNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, bankNum);ResultSet rs=pstmt.executeQuery();while(rs.next()) {flag++;}if(flag==1) {return 1;}else {return 0;}}public void openAccount() throws SQLException {//开户String sql="update user set bankNum = ? where cardNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);String sql2="update user set bankName = ? where cardNum = ?";PreparedStatement pstmt2=con.prepareStatement(sql2);@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);System.out.print("请输入您的身份证号码：");String cardNum=sc.nextLine();if(checkcardNum(cardNum)==1&&checkbankNum(cardNum)==1) {String bankNum=randomBankNum();System.out.println("开户成功，银行卡号码为："+bankNum);pstmt.setObject(1,bankNum);pstmt.setObject(2, cardNum);pstmt.execute();pstmt2.setObject(1, "中国农业银行");pstmt2.setObject(2, cardNum);pstmt2.execute();}else {System.out.println("【您已经存在对应的银行卡号码，无法再开户！】");}}public int checkbankNum(String cardNum) throws SQLException {//确定该身份证号码下没有任何的银行卡号码String bankNum=null;String sql="select*from user where cardNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, cardNum);ResultSet rs=pstmt.executeQuery();while(rs.next()) {bankNum=rs.getString(7);}if(bankNum.equals("无")) {return 1;}else {return 0;}}public String randomBankNum() throws SQLException{//产生12位的随机数作为用户的银行卡号Random r=new Random();while (true) {String cardId="";for (int i = 0; i <12 ; i++) {cardId+=r.nextInt(10);//0-9}if(checkCheck(cardId)==0){//卡号没有重复return cardId;}else{return null;}}}public void addMoney() throws SQLException {//存款//先将钱数读取出来，再增加@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);double initialMoney = 0;//未存款前，银行卡中的金额double money = 0;String date = null;String bankNum = null;String type="存款";System.out.print("请输入金额存入的银行卡卡号：");bankNum=sc.nextLine();if(checkCheck(bankNum)==1) {initialMoney=readInitialMoney(bankNum);//读取银行卡中初始金额String sql="update user set money = ? where bankNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);System.out.print("请输入存入的数额：");money=sc.nextDouble();initialMoney=money+initialMoney;pstmt.setObject(1, initialMoney);pstmt.setObject(2, bankNum);pstmt.execute();date=getTime();System.out.println("【"+money+"元已经存入"+bankNum+"账户中！"+"当前账户的余额为："+initialMoney+"元】");String t="无";//将此次交易记录存入recordTrade(bankNum,t,money,type,date,getCardNum(bankNum),t);}else {System.out.println("【您要存款的账户不存在，请先在本系统开户之后再存款！】");}}public void deleteMoney() throws SQLException {//取款@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);double initialMoney = 0;//未取款前，银行卡中的金额String type="取款";String bankNum = null;double money = 0;String date = null;System.out.print("请输入金额取出的银行卡卡号：");bankNum=sc.nextLine();if(checkCheck(bankNum)==1) {initialMoney=readInitialMoney(bankNum);String sql="update user set money = ? where bankNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);System.out.print("请输入取出的金额：");money=sc.nextDouble();if(money=money) {//账户中的钱足够转账@SuppressWarnings("resource")Scanner sc2=new Scanner(System.in);System.out.print("请输入对方的身份证号码：");cardNum2=sc2.nextLine();if(checkcardNum(cardNum2)==1) {System.out.print("请输入对方的银行卡号：");bankNum2=sc2.nextLine();if(checkCheck(bankNum2)==1) {money2=readInitialMoney(bankNum2);money1=money1-money;money2=money2+money;pstmt.setObject(1, money1);pstmt.setObject(2, bankNum);pstmt2.setObject(1, money2);pstmt2.setObject(2, bankNum2);pstmt.execute();pstmt2.execute();date=getTime();System.out.println("【"+getName(getCardNum(bankNum))+"女士/先生,"+money+"元从"+bankNum+"账户中转入"+bankNum2+"账户中】");System.out.println("【"+bankNum+"账户的余额为："+money1+" && "+bankNum2+"账户的余额为："+money2+"】");//记录这次交易recordTrade(bankNum,bankNum2,money,"转账",date,getCardNum(bankNum),cardNum2);}else {System.out.println("对方的银行卡号错误，请重新尝试！");}}else {System.out.println("输入错误，请重新尝试！");}}else {System.out.println("账户中余额不足，无法转账！");}}else {System.out.println("银行卡号输入错误，请重新尝试！");}}public void loan() throws SQLException {//贷款String style=null;double monthMoney=0;String sql="insert into loan values(?,?,?,?,?,?,?,?,?)";PreparedStatement pstmt=con.prepareStatement(sql);@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);System.out.println("--------------贷款操作页面--------------");System.out.print("请输入您的身份证号码：");String cardNum=sc.nextLine();if(checkcardNum(cardNum)==1) {System.out.print("请输入您的银行卡号码：");String bankNum=sc.nextLine();if(checkCheck(bankNum)==1) {@SuppressWarnings("resource")Scanner sc2=new Scanner(System.in);System.out.print("请输入您的贷款金额（万元为单位,2~200之间）：");double loanMoney=sc2.nextDouble();if(checkLoanMoney(loanMoney)==1) {System.out.print("请输入您的贷款期限（以月为单位，3~36之间）：");double loanTerm=sc2.nextDouble();if(checkLoanTerm(loanTerm)==1) {System.out.println("------还款方式如下------");System.out.println(" 1.等额本息法");System.out.println(" 2.等额本金法");System.out.println("---------------------");System.out.print("请输入您的选择：");int command=sc.nextInt();if(command==1) { ;monthMoney=(10000*loanMoney*0.006*Math.pow(1.006,loanTerm))/(Math.pow(1.006,loanTerm)-1);}else if(command==2) { ;monthMoney=(10000*loanMoney/loanTerm)+(loanMoney-getRepayment(bankNum))*0.006;}String date=getTime();System.out.println("【贷款成功！】");updateMoney(bankNum,loanMoney);//更新账户的余额String type="贷款";//将此次交易记录存入recordTrade(bankNum,"中国农业银行",loanMoney*10000,type,date,getCardNum(bankNum),"中国农业银行");//将信息存入表中pstmt.setObject(1, cardNum);pstmt.setObject(2, bankNum);pstmt.setObject(3, loanMoney*10000);pstmt.setObject(4, date);pstmt.setObject(5, 0.006);pstmt.setObject(6, loanTerm);pstmt.setObject(7, monthMoney);pstmt.setObject(8, 0.0);pstmt.setObject(9, style);pstmt.execute();}}else {System.out.println("您输入的金额不在银行贷款的范围之内，无法办理贷款业务！");}}else {System.out.println("银行卡号码错误或者不存在，请重新尝试！");}}else {System.out.println("身份证号码输入错误，请重新尝试！");}}public int checkLoanMoney(double money) {//检验用户贷款金额是否在银行借贷范围之后if(money>=2&&money=3&&loanTerm=monthMoney) {pstmt.setObject(1,getMonthMoney(bankNum)+getRepayment(bankNum));pstmt.setObject(2, cardNum);pstmt.execute();deletemoney(bankNum);System.out.println("【还款成功！】");String date=getTime();//将此次交易记录存入recordTrade(bankNum,"中国农业银行",getMonthMoney(bankNum),"还款",date,getCardNum(bankNum),"中国农业银行");}else {System.out.println("账户余额不足，无法还款！");}}else {System.out.println("银行卡号码输入错误！");}}else {System.out.println("输入的身份证号码错误！");}}public int checkcardNum2(String cardNum) throws SQLException {//在loan表中检验身份证号码是否存在int flag=0;String sql="select * from loan where cardNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, cardNum);ResultSet rs=pstmt.executeQuery();while(rs.next()) {flag++;}if(flag==1) {return 1;}else {return 0;}}public int checkbankNum2(String bankNum) throws SQLException {//在loan。表中检验银行卡号码是否存在int flag=0;String sql="select * from loan where bankNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, bankNum);ResultSet rs=pstmt.executeQuery();while(rs.next()) {flag++;}if(flag==1) {return 1;}else {return 0;}}public double getMonthMoney(String bankNum) throws SQLException {//返回用户需要还款的金额double monthMoney=0.0;String sql="select * from loan where bankNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, bankNum);ResultSet rs=pstmt.executeQuery();while(rs.next()) {monthMoney=rs.getDouble(7);//double小数点后默认保留6位}return monthMoney;}public void deletemoney(String bankNum) throws SQLException {//还款成功时，该用户账户余额扣除还款费用String sql="update user set money = ? where bankNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);double initialMoney=readInitialMoney(bankNum);double monthMoney=getMonthMoney(bankNum);if(initialMoney>=monthMoney) {initialMoney=initialMoney-monthMoney;pstmt.setObject(1, initialMoney);pstmt.setObject(2, bankNum);pstmt.execute();System.out.println("【"+monthMoney+"元已经从"+bankNum+"账户中"+"扣除！"+"当前账户的余额为："+initialMoney+"元】");}}public double getRepayment(String bankNum) throws SQLException {//返回用户已还款数double initialRepayment=0.0;String sql="select * from loan where bankNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, bankNum);ResultSet rs=pstmt.executeQuery();while(rs.next()) {initialRepayment=rs.getDouble(8);}return initialRepayment;}public void recordTrade(String bankNum,String bankNum2,double money,String type,String date,String cardNum,String cardNum2) throws SQLException {//记录每一笔交易String sql="insert into movemoney values(?,?,?,?,?,?,?)";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1,bankNum);pstmt.setObject(2,bankNum2);pstmt.setObject(3,money);pstmt.setObject(4,type);pstmt.setObject(5,date);pstmt.setObject(6,cardNum);pstmt.setObject(7,cardNum2);pstmt.execute();}public String getCardNum(String bankNum) throws SQLException {//获取身份证号码String cardNum = null;String sql="select * from user where bankNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, bankNum);ResultSet rs=pstmt.executeQuery();while(rs.next()) {cardNum=rs.getString(1);}return cardNum;}public void userView() throws SQLException {//用户查看信息（个人信息、交易信息、贷款信息）while(true) {@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);System.out.println("----------------用户查看信息----------------");System.out.println("1.查看个人信息");System.out.println("2.查看交易记录");System.out.println("3.查看贷款信息");System.out.println("4.退出");System.out.println("-----------------------------------------");System.out.print("请输入你要操作的指令：");int command=sc.nextInt();switch(command) {case 1:findOwnInformation();break;case 2:findTradeInformation();break;case 3:findLoanInformation();break;case 4:return;default:System.out.println("输入的指令不存在！");}}}public void findLoanInformation() throws SQLException {//查看贷款信息@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);String sql="select * from loan where bankNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);System.out.print("请输入您的银行卡号码：");String bankNum=sc.nextLine();if(checkbankNum2(bankNum)==1) {pstmt.setObject(1, bankNum);ResultSet rs=pstmt.executeQuery();System.out.println("--------------贷款信息如下--------------");out.printf("%-10s\t%-10s\t%-10s%-10s\t\t%-10s\t%-10s%-10s\t%-10s\t\t%-10s\n", "身份证号码","银行卡号码","贷款金额","交易日期","月利率","贷款期限","每月还款金额","已还款金额","还款方式");while(rs.next()) {//自己方pstmt.execute();System.out.println(rs.getString(1)+"\t"+rs.getString(2)+"\t"+rs.getDouble(3)+"\t"+rs.getString(4)+" "+rs.getString(5)+"\t"+rs.getString(6)+"\t"+rs.getString(7)+"\t"+rs.getString(8)+"\t"+rs.getString(9));}}else {System.out.println("您不存在贷款！");}}public void accountCancel() throws SQLException {//注销@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);String sql="delete from user where cardNum = ?";PreparedStatement pstmt =con.prepareStatement(sql);System.out.print("请输入要删除账户持有人的身份证号码：");String cardNum=sc.nextLine();if(check(cardNum)==0) {pstmt.setObject(1,cardNum);pstmt.execute();System.out.println("注销成功！");}else {System.out.println("【该账户余额不为0，无法注销！】");}}public int check(String cardNum) throws SQLException {//检查账户是否还有金额，如果有则无法注销int flag = 0;String sql="select * from user where cardNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);pstmt.setObject(1, cardNum);ResultSet rs=pstmt.executeQuery();while(rs.next()) {double money;money=rs.getDouble(5);pstmt.execute();if(money>0) {flag=1;}else {flag=0;}}return flag;}public void managerMenu() throws SQLException {while(true) {@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);System.out.println("===============管理员操作页面============");System.out.println("1.增加账户信息");//相当于开户System.out.println("2.删除账户信息");//相当于销户System.out.println("3.查询账户信息");System.out.println("4.修改账户信息");System.out.println("5.显示统计信息");//目前银行已有账户数、贷款账户数System.out.println("6.浏览所有账户全部信息");System.out.println("7.退出");System.out.println("=====================================");System.out.print("请输入你的指令：");int command=sc.nextInt();switch(command) {case 1:addUser();break;case 2:deleteUser();break;case 3:findUser();break;case 4:correctUser();break;case 5:countView();break;case 6:userDisplay();break;case 7:return;default:System.out.println("输入的指令不存在，请重新输入！");}}}public void init()throws Exception{//初始化if(con!=null)return;Class.forName(driver);con=DriverManager.getConnection(url,user,pass);}public void close() throws Exception{//关闭if(con!=null)con.close();}public static void println(String str){out.println(str);}publicvoid initTable()throws SQLException{String sql ="create table user(name varchar(30),cardNum varchar(30),tel varchar(30),pwd varchar(30),email varchar(30),money double,relName varchar(30))";Statement stmt =con.createStatement();stmt.executeUpdate(sql);stmt.close();}//增加的信息不能重复，要先检验数据表该信息是否已经存在public void addUser() throws SQLException {//增加账户信息String bankNum=randomBankNum();String sql="insert into user values(?,?,?,?,?,?,?,?)";PreparedStatement pstmt=con.prepareStatement(sql);@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);System.out.print("请输入身份证号码：");String cardNum=sc.nextLine();if(checkcardNum(cardNum)==0) {//检验该账户是否已经存在System.out.print("请输入电话号码：");String tel=sc.nextLine();System.out.print("请设置密码：");String pwd=sc.nextLine();System.out.print("请输入电子邮箱：");String email=sc.nextLine();System.out.print("请输入真实姓名：");String relName=sc.nextLine();pstmt.setObject(1, cardNum);pstmt.setObject(2, tel);pstmt.setObject(3, pwd);pstmt.setObject(4, email);pstmt.setObject(5, 0);pstmt.setObject(6, relName);pstmt.setObject(7, bankNum);pstmt.setObject(8, "中国农业银行");pstmt.execute();System.out.println("【"+relName+"女士/先生,银行卡号为："+bankNum+"添加成功！】");}else {System.out.println("【该身份证号码已经存在，无法添加下信息！】");}}public void deleteUser() throws SQLException {//删除账户信息@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);String sql="delete from user where cardNum = ?";PreparedStatement pstmt =con.prepareStatement(sql);System.out.print("请输入要删除账户持有人的身份证号码：");String cardNum=sc.nextLine();pstmt.setObject(1,cardNum);pstmt.execute();System.out.println("【删除成功！】");}public void findUser() throws SQLException {//查询账户信息while(true) {@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);System.out.println("--------------查询账户信息操作页面--------------");System.out.println("1.查询账户持有者个人信息");System.out.println("2.查询账户持有者交易信息");System.out.println("3.退出");System.out.print("请输入你要操作的指令：");int command=sc.nextInt();switch(command) {case 1:findOwnInformation();//查询个人信息break;case 2:findTradeInformation();//查询交易信息break;case 3:return;default:System.out.println("输入的指令不存在，请重新输入！");}} }public void findOwnInformation() throws SQLException{//查询个人信息@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);String sql="select * from user where cardNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);System.out.print("请输入要查询账户持有者的身份证号码：");String cardNum=sc.nextLine();pstmt.setObject(1, cardNum);ResultSet rs=pstmt.executeQuery();while(rs.next()) {String cardNumber;String tel;String pwd;String email;double money;String relName;String bankNum;String bankName;cardNumber=rs.getString(1);tel=rs.getString(2);pwd=rs.getString(3);email=rs.getString(4);money=rs.getDouble(5);relName=rs.getString(6);bankNum=rs.getString(7);bankName=rs.getString(8);System.out.println("--------------查询的用户信息如下--------------");out.printf("%-10s\t%-10s%-10s %-10s %-10s %-10s%-10s%-10s\n","身份证号码","电话","密码","邮箱","余额","真实姓名","银行卡号","开户银行");System.out.println(cardNumber+"\t"+tel+""+pwd+""+email+""+money+"\t "+relName+"\t "+bankNum+"\t"+bankName);pstmt.execute();}}public void findTradeInformation() throws SQLException {//查询交易信息@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);String sql="select * from movemoney where ownbankNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);String sql2="select * from movemoney where otherbankNum = ?";PreparedStatement pstmt2=con.prepareStatement(sql2);System.out.print("请输入要查询账户持有者的身份证号码：");String cardNum=sc.nextLine();if(checkcardNum(cardNum)==1) {//应该在movemoney表中进行查询该用户是否存在System.out.print("请输入要查询账户持有者的银行卡号码：");String bankNum=sc.nextLine();if(checkCheck(bankNum)==1) {pstmt.setObject(1, bankNum);ResultSet rs=pstmt.executeQuery();System.out.println("--------------"+getName(cardNum)+"女士/先生的交易信息如下--------------");out.printf("%-10s\t%-10s\t\t%-10s%-10s%-10s\t\t%-10s\t%-10s\n", "自己方","交易方","交易金额","交易类型","交易日期","身份证号码","交易方身份证号码");while(rs.next()) {//自己方pstmt.execute();System.out.println(rs.getString(1)+"\t"+rs.getString(2)+"\t\t"+rs.getDouble(3)+"\t"+rs.getString(4)+"\t\t"+rs.getString(5)+"\t"+rs.getString(6)+"\t\t"+rs.getString(7));}pstmt2.setObject(1, bankNum);ResultSet rs2=pstmt2.executeQuery();while(rs2.next()) {//交易方pstmt2.execute();System.out.println(rs2.getString(1)+"\t"+rs2.getString(2)+"\t\t"+rs2.getDouble(3)+"\t"+rs2.getString(4)+"\t\t"+rs2.getString(5)+"\t"+rs2.getString(6)+"\t\t"+rs2.getString(7));}}else {System.out.println("输入的银行卡号不存在，请再次尝试！");}}else {System.out.println("输入的身份证号码不正确，请再次尝试！");}}public void correctUser() throws SQLException {//修改用户的账户信息while(true) {@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);System.out.println("--------------修改账户信息操作页面--------------");System.out.println("1.修改联系电话");System.out.println("2.修改登录密码");System.out.println("3.修改邮箱地址");System.out.println("4.退出");System.out.print("请输入你要操作的指令：");int command=sc.nextInt();switch(command) {case 1:correctTel();//修改电话break;case 2:correctPwd();//修改密码break;case 3:correctEmail();//修改邮箱break;case 4:return;default:System.out.println("输入的指令不存在，请重新输入！");}}}public void correctTel() throws SQLException {//修改电话@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);String sql="update user set tel = ? where cardNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);System.out.print("请输入要修改人的身份证号码：");String cardNum=sc.nextLine();if(checkcardNum(cardNum)==1) {System.out.print("请输入更换的电话号码：");String tel=sc.nextLine();pstmt.setObject(1, tel);pstmt.setObject(2, cardNum);pstmt.execute();System.out.println("【电话号码修改成功！】");}else {System.out.println("输入的身份证号码不正确，请重新输入！");correctTel();}}public void correctPwd() throws SQLException {//修改登录密码@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);String sql="update user set pwd = ? where cardNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);System.out.print("请输入要修改人的身份证号码：");String cardNum=sc.nextLine();if(checkcardNum(cardNum)==1) {System.out.print("请输入修改后的密码：");String pwd=sc.nextLine();pstmt.setObject(1, pwd);pstmt.setObject(2, cardNum);pstmt.execute();System.out.println("【登录密码修改成功！】");}else {System.out.println("输入的身份证号码不正确，请重新输入！");correctPwd();}}public void correctEmail() throws SQLException {//修改电子邮箱@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);String sql="update user set email = ? where cardNum = ?";PreparedStatement pstmt=con.prepareStatement(sql);System.out.print("请输入要修改人的身份证号码：");String cardNum=sc.nextLine();if(checkcardNum(cardNum)==1) {System.out.print("请输入修改后的电子邮箱：");String email=sc.nextLine();pstmt.setObject(1, email);pstmt.setObject(2, cardNum);pstmt.execute();System.out.println("【电子邮箱修改成功！】");}else {System.out.println("输入的身份证号码不正确，请重新输入！");correctEmail();}}public void countView() throws SQLException {//显示统计信息while(true) {@SuppressWarnings("resource")Scanner sc=new Scanner(System.in);System.out.println("--------------显示统计信息操作页面--------------");System.out.println("1.统计目前银行中存在的账户数量");System.out.println("2.统计目前银行中贷款的账户数量");System.out.println("3.退出");System.out.print("请输入你要操作的指令：");int command=sc.nextInt();switch(command) {case 1:accountNumber();//统计目前银行中存在的账户数量break;case 2:loanNumber();//目前银行中贷款的账户数量break;case 3:return;default:System.out.println("输入的指令不存在，请重新输入！");}}}public void accountNumber() throws SQLException {//统计目前银行中存在的账户数量String sql="select * from user";PreparedStatement pstmt =con.prepareStatement(sql);ResultSet rs =pstmt.executeQuery();int cout = 0;while(rs.next()) {cout++;}System.out.println("目前银行中存在的账户数量为："+cout);}public void loanNumber() throws SQLException {//统计目前银行中贷款的账户数量String sql="select * from loan";PreparedStatement pstmt=con.prepareStatement(sql);//String type="贷款";//pstmt.setObject(1, type);ResultSet rs=pstmt.executeQuery();int number = 0;while(rs.next()) {number++;}System.out.println("目前银行中贷款的账户数量："+number);}public void userDisplay() throws SQLException{//将数据库中用户的信息全部输出String sql ="select* from user";PreparedStatement pstmt =con.prepareStatement(sql);ResultSet rs =pstmt.executeQuery();System.out.println("--------------------全部用户的个人信息如下--------------------");out.printf("%-10s\t%-10s%-10s %-10s %-10s\t%-10s%-10s%-10s\n","身份证号码","电话","密码","邮箱","余额","真实姓名","银行卡号","开户银行");while (rs.next()){String cardNum=rs.getString("cardNum");String tel=rs.getString("tel");String pwd=rs.getString("pwd");String email=rs.getString("email");double money=rs.getDouble("money");String relName=rs.getString("relName");String bankNum=rs.getString("bankNum");String bankName=rs.getString("bankName");System.out.println(cardNum+"\t"+tel+""+pwd+""+email+""+money+"\t\t"+relName+"\t "+bankNum+"\t "+bankName);}String sql1="select * from movemoney";PreparedStatement pstmt1 =con.prepareStatement(sql1);ResultSet rs1 =pstmt1.executeQuery();System.out.println("--------------------全部用户的历史交易信息如下--------------------");out.printf("%-10s\t%-10s\t%-10s\t\t%-10s\t%-10s\t\t\t%-10s\t\t\t%-10s\n", "自己方","交易方","交易金额","交易类型","交易日期","身份证号码","交易方身份证号码");while(rs1.next()) {String outUser=rs1.getString("ownbankNum");String inUser=rs1.getString("otherbankNum");double money1=rs1.getDouble("money");String type=rs1.getString("type");String date=rs1.getString("date");String outcardNum=rs1.getString("owncardNum");String incardNum=rs1.getString("othercardNum");System.out.println(outUser+"\t"+inUser+"\t"+money1+"\t\t\t"+type+"\t\t"+date+"\t\t"+outcardNum+"\t\t\t"+incardNum);}}}