选题：PC端记账本软件

语言：C++

开发工具：Qt库、Qt Creator

其实组里的人都比较懒，做完了之后觉得应该做个游戏什么的比较考验自己的能力，不过做实用的软件也确实比较有意思，为此还买了个机械键盘，感觉有点浪费hhh，下面开始正题了。
软件要实现的几个主要功能

1.记录每日支出

2.实现简单的本地登录功能->即实现数据库的写入与读取

我在这里用的是Qt自带的一个比较简单的QSQLite，有需求的可以上远程服务器，不过我这里还是遇到了一些问题就是在打包之后无法使用数据库，可能是依赖没有添加的原因，由于已经蒙混过关了所以就没有深究这一块的问题。

3.实现支出数据的图表化

总体看下来个人认为比较繁琐的是数据库的部分，巧的是我之前做的一个项目里有比较接近的模块，所以这部分是我自己来负责的，零零总总还都比较简单，由于队友都不太行hhhh，我也就没想着做拓展功能，谁能想到五个人的团队实际上只有两个人在写代码呢？

bool OpenDateBase();
int main(int argc, char *argv[])
{OpenDateBase();QApplication a(argc, argv);MainWindow w;w.show();return a.exec();
}

可以看到main部分的代码还是比较简单的，大概是实现这么一个逻辑：打开数据库，生成窗口实例，展示窗口最后再让窗口一直显示

bool OpenDateBase(){QSqlDatabase mydb=QSqlDatabase::addDatabase("QSQLITE");mydb.setDatabaseName("cashitem.db");if(mydb.open()){qDebug()<<"open success";QSqlQuery query;//新建item表，id设置为主键，一个金额，一个类型，一个内容,一个时间query.exec("create table item(id INTEGER PRIMARY KEY AUTOINCREMENT,money int,type varchar,content varchar,addtime time,useraccount varchar)");//条目，即输入的支出数据query.exec("create table user(id INTEGER PRIMARY KEY AUTOINCREMENT,useraccount varchar,userpassword varchar,useremail varchar)");//用户信息query.exec("create table user_budget_setting(id INTEGER PRIMARY KEY AUTOINCREMENT,useraccount varchar,dayBudget int,monthBudget int,yearBudget int)");//用户的支出与预算表return true;}else{//给出debug提示，便于定位错误的地点qDebug()<<"open failed";return false;}
}

必须在Qt给出的.pro文件中添加sql，见下文的最后一行

#-------------------------------------------------
#
# Project created by QtCreator 2019-07-03T10:40:19
#
#-------------------------------------------------QT       += core gui sql charts

这一部分的代码我是根据网上的一篇博客改的，在这里我先创建了一个数据库，若数据库存在那么就会直接调用，这里的数据库使用还是比较轻松的，以前我用服务器的数据库真的是一波三折哈哈哈，而后创建了三张数据表，含义在我给的注释里。

这个主键我也是纠结了很久，我以为给他传一个NULL就好了，后来我发现还不能加‘’单引号确实比较坑爹，详细可以看我后面给出的代码。

接下来是主窗口的代码mainwindow：


MainWindow::MainWindow(QWidget *parent) :QMainWindow(parent),ui(new Ui::MainWindow)
{ui->setupUi(this);tagWidgetLayout.setParent(ui->dailyBoardContent);connect(&user_login,&userLoginWindow::loginSuccess,this,&MainWindow::user_login_sucess);connect(&itemMark,&itemMark::conveyData,this,&MainWindow::addNewItemLabel);ui->edit_pushButton->hide();ui->delet_pushButton_2->hide();ui->statusBar->hide();ui->menuBar->hide();ui->mainToolBar->hide();
}MainWindow::~MainWindow()//主窗口的销毁函数
{QSqlQuery query;//建立一个数据库的queryQString sql1;sql1="insert into user_login(id,useraccount)values(NULL,'') ";query.exec(sql1);query.exec("select  id,useraccount from user_login where id >= 0");while (query.next()) {QString id = query.value(0).toString();useraccount = query.value(1).toString();qDebug()<<"mainwindow:"<<id<<useraccount;}delete ui;
}void MainWindow::on_addItemButton_clicked()
{//ui->tabWidget->hide();itemMark.show();
}void MainWindow::addNewItemLabel(int money ,QString type,QString content){newWidget = new itemWidget(money,type,content,ui->itemListWidget);QSqlQuery query1;query1.exec("select  id,useraccount from user_login where id >= 0");while (query1.next()) {QString id = query1.value(0).toString();useraccount = query1.value(1).toString();qDebug()<<id<<useraccount;}if(content!=NULL){QDateTime dtm;QString timestr = dtm.currentDateTime().toString("yyyyMMdd");QSqlQuery query;//建立一个数据库的queryQString sql1;sql1=QString("insert into item(id, money, type,content,addtime,useraccount) values(NULL,'%1', '%2', '%3','%4','%5')").arg(money).arg(type).arg(content).arg(timestr).arg(useraccount);query.exec(sql1);qDebug()<<money<<type<<content<<timestr<<useraccount;QListWidgetItem *listwidgetitem = new QListWidgetItem(ui->itemListWidget,0);listwidgetitem->setSizeHint(QSize(50,50));ui->itemListWidget->setItemWidget(listwidgetitem,newWidget);ui->itemListWidget->show();}}
void MainWindow::deletItem(){QListWidgetItem *listwidgetitem= ui->itemListWidget->currentItem();listwidgetitem->setHidden(true);
}void MainWindow::on_userAvatarPic_clicked()
{user_login.show();
}void MainWindow::on_dailyBoardButton_clicked()
{ui->stackedWidget->setCurrentIndex(0);
}void MainWindow::on_chartAnalysisButton_clicked()
{int i = ui->monthSelector->currentIndex();chartsMaking(i+1);ui->stackedWidget->setCurrentIndex(1);
}void MainWindow::on_bugetSettingButton_clicked()
{QSqlQuery query_user;query_user.exec("select  id,useraccount from user_login where id >= 0");while(query_user.next()){useraccount = query_user.value(1).toString();//    qDebug()<<useraccount;}ui->stackedWidget->setCurrentIndex(2);QSqlQuery query;QDateTime dtm;QString timeNow=dtm.currentDateTime().toString("yyyyMMdd");int year = timeNow.toInt();//   int day = year % 100;year/=100;//   int month = year % 100;year/=100;int thisMonthCost(0),thisDayCost(0),thisYearCost(0);QString monthNow = timeNow.remove(6,7);timeNow=dtm.currentDateTime().toString("yyyyMMdd");QString sql =QString("select  money,addtime,useraccount from item where addtime between '%1%2%3'and '%4%5%6'").arg(year).arg("01").arg("01").arg(year+1).arg("01").arg("00");query.exec(sql);while(query.next()){if (query.value(2).toString() == useraccount) {thisYearCost+=query.value(0).toInt();if (query.value(1).toString().contains(monthNow,Qt::CaseInsensitive))  thisMonthCost+=query.value(0).toInt();if (query.value(1).toString() == timeNow ) thisDayCost+=query.value(0).toInt();}}//qDebug()<<thisDayCost;//qDebug()<<thisMonthCost;//qDebug()<<thisYearCost;sql = QString("select dayBudget,monthBudget,yearBudget from user_budget_setting where useraccount = '%1'").arg(useraccount);query.exec(sql);int dayBudget(0),monthBudget(0),yearBudget(0);while(query.next()){qDebug()<<query.value(0).toInt();qDebug()<<query.value(1).toInt();qDebug()<<query.value(2).toInt();dayBudget=query.value(0).toInt();monthBudget=query.value(1).toInt();yearBudget=query.value(2).toInt();}if (thisDayCost>dayBudget)//TODO 增加弹窗提示{ui->dayprogressBar->setMaximum(thisDayCost);}else ui->dayprogressBar->setMaximum(dayBudget);if (thisMonthCost>monthBudget)//TODO 增加弹窗提示{ui->monthprogressBar->setMaximum(thisMonthCost);}else ui->monthprogressBar->setMaximum(monthBudget);if (thisYearCost>yearBudget)//TODO 增加弹窗提示{ui->yearprogressBar->setMaximum(thisYearCost);}else ui->yearprogressBar->setMaximum(yearBudget);ui->dayprogressBar->setValue(thisDayCost);ui->monthprogressBar->setValue(thisMonthCost);ui->yearprogressBar->setValue(thisYearCost);QString daylabel = QString("每日预算：%1/%2").arg(thisDayCost).arg(dayBudget);QString monthlabel = QString("每月预算：%1/%2").arg(thisMonthCost).arg(monthBudget);QString yearlabel = QString("每年预算：%1/%2").arg(thisYearCost).arg(yearBudget);ui->dayBudgetSetlabel->setText(daylabel);ui->monthBudgetSetlabel->setText(monthlabel);ui->yearBudgetSetlabel->setText(yearlabel);
}void MainWindow::on_dayBudgetSetButton_clicked()
{//接收新的预算int dayBudget;dayBudget = QInputDialog::getInt(this,"设置","每日预算：",0);QSqlQuery query;QSqlQueryModel *model_2 = new QSqlQueryModel;QString sql = QString("select count (*) from user_budget_setting where useraccount = '%1'").arg(useraccount);model_2->setQuery(sql);QModelIndex index1 = model_2->index(0,0);if (index1.data()==0){//插入一条新记录sql = QString("insert into user_budget_setting(id,dayBudget,monthBudget,yearBudget,useraccount) values(NULL,'%1','%2','%3','%4')").arg(dayBudget).arg(0).arg(0).arg(useraccount);qDebug()<<useraccount;query.exec(sql);}else { //更新记录//DebugqDebug()<<"更新成功";sql = QString("update user_budget_setting set dayBudget = '%1' where useraccount = '%2'").arg(dayBudget).arg(useraccount);query.exec(sql);}//更新预算进度标签QString daylabel = QString("每日预算：%1/%2").arg(ui->dayprogressBar->value()).arg(dayBudget);ui->dayBudgetSetlabel->setText(daylabel);if (ui->dayprogressBar->value()>dayBudget)//TODO 增加弹窗提示{ui->dayprogressBar->setMaximum(ui->dayprogressBar->value());}else ui->dayprogressBar->setMaximum(dayBudget);ui->dayBudgetSetlabel->show();}void MainWindow::on_monthBudgetSetButton_clicked()
{//接收新的预算int monthBudget;monthBudget = QInputDialog::getInt(this,"设置","每月预算：",0);//TODO添加数据库操作QSqlQuery query;QSqlQueryModel *model_2 = new QSqlQueryModel;QString sql = QString("select count (*) from user_budget_setting where useraccount = '%1'").arg(useraccount);model_2->setQuery(sql);QModelIndex index1 = model_2->index(0,0);if (index1.data()==0){//插入一条新记录sql = QString("insert into user_budget_setting(id,dayBudget,monthBudget,yearBudget,useraccount) values(NULL,'%1','%2','%3','%4')").arg(0).arg(monthBudget).arg(0).arg(useraccount);qDebug()<<useraccount;query.exec(sql);}else { //更新记录//DebugqDebug()<<"更新成功";sql = QString("update user_budget_setting set monthBudget = '%1' where useraccount = '%2'").arg(monthBudget).arg(useraccount);query.exec(sql);}//更新预算进度标签QString monthlabel = QString("每月预算：%1/%2").arg(ui->monthprogressBar->value()).arg(monthBudget);ui->monthBudgetSetlabel->setText(monthlabel);if (ui->monthprogressBar->value()>monthBudget)//TODO 增加弹窗提示{ui->monthprogressBar->setMaximum(ui->monthprogressBar->value());}else ui->monthprogressBar->setMaximum(monthBudget);ui->monthBudgetSetlabel->show();
}void MainWindow::on_yearBudgetSetButton_clicked()
{//接收新的预算int yearBudget;yearBudget = QInputDialog::getInt(this,"设置","每年预算：",0);//TODO添加数据库操作QSqlQuery query;QSqlQueryModel *model_2 = new QSqlQueryModel;QString sql = QString("select count (*) from user_budget_setting where useraccount = '%1'").arg(useraccount);model_2->setQuery(sql);QModelIndex index1 = model_2->index(0,0);if (index1.data()==0){//插入一条新记录sql = QString("insert into user_budget_setting(id,dayBudget,monthBudget,yearBudget,useraccount) values(NULL,'%1','%2','%3','%4')").arg(0).arg(0).arg(yearBudget).arg(useraccount);qDebug()<<useraccount;query.exec(sql);}else { //更新记录//DebugqDebug()<<"更新成功";sql = QString("update user_budget_setting set yearBudget = '%1' where useraccount = '%2'").arg(yearBudget).arg(useraccount);query.exec(sql);}//更新预算进度标签QString yearlabel = QString("每年预算：%1/%2").arg(ui->yearprogressBar->value()).arg(yearBudget);ui->yearBudgetSetlabel->setText(yearlabel);if (ui->yearprogressBar->value()>yearBudget)//TODO 增加弹窗提示{ui->yearprogressBar->setMaximum(ui->yearprogressBar->value());}else ui->yearprogressBar->setMaximum(yearBudget);ui->yearBudgetSetlabel->show();
}void MainWindow::on_monthSelector_activated(int index)
{int x = index;x++;chartsMaking(x);
}//饼状图生成函数
void MainWindow::chartsMaking(int month)
{QSqlQuery query1;query1.exec("select  id,useraccount from user_login where id >= 0");while (query1.next()) {QString id = query1.value(0).toString();useraccount = query1.value(1).toString();qDebug()<<"BarMaking:"<<id<<useraccount;}//获取当前用户账号QSqlQuery query;QString sql =QString("select  money, type from item where useraccount = '%1'and addtime between '20190%2%3'and '20190%4%5'").arg(useraccount).arg(month).arg("01").arg(month+1).arg("00") ;query.exec(sql);int eatMoney,entertainmentMoney,eduMoney;eatMoney=0;entertainmentMoney = 0;eduMoney=0;//int eatMoney_per,entertainmentMoney_per,eduMoney_per;while (query.next()) {if(query.value(1).toString()=="饮食"){eatMoney+=query.value(0).toInt();}else if(query.value(1).toString()=="娱乐"){entertainmentMoney+=query.value(0).toInt();}else if(query.value(1).toString()=="教育"){eduMoney+=query.value(0).toInt();}}qDebug()<<eatMoney;qDebug()<<entertainmentMoney;qDebug()<<eduMoney;qDebug()<<month;QPieSeries *series = new QPieSeries();series->append("饮食",eatMoney);series->append("娱乐",entertainmentMoney);series->append("教育",eduMoney);series->setLabelsVisible();/*QPieSlice *slice_red = series->slices().at(0);QPieSlice *slice_green = series->slices().at(1);QPieSlice *slice_blue = series->slices().at(2);slice_red->setColor(QColor(255,0,0,255));slice_green->setColor(QColor(0,255,0,255));slice_blue->setColor(QColor(0,0,255,255));*/QChart *chart = new QChart();chart->addSeries(series);QString title = QString("您的%1月的账单统计图").arg(month);chart->setTitle(title);chart->legend()->hide();ui->chartViewer->setChart(chart);//QChartView *chartview = new QChartView(chart);//chartview->setRenderHint(QPainter::Antialiasing);//chartview->resize(400,400);//chartview->show();//ui->graphicsView->setChart(chart);//ui->graphicsView->setRenderHint(QPainter::Antialiasing);
}
//柱状图生成函数
void MainWindow::barChartsMaking(int month){QSqlQuery query1;query1.exec("select  id,useraccount from user_login where id >= 0");while (query1.next()) {QString id = query1.value(0).toString();useraccount = query1.value(1).toString();qDebug()<<"BarMaking:"<<id<<useraccount;}//获取当前用户账号QStringList category;QSqlQuery query;QString sql =QString("select  money, type from item where useraccount = '%1'and addtime between '20190%2%3'and '20190%4%5'").arg(useraccount).arg(month).arg("01").arg(month+1).arg("00") ;query.exec(sql);QBarSet *set = new QBarSet("总览");QBarSet *setEntertainment = new QBarSet("娱乐");QBarSet *setEdu = new QBarSet("教育");int eatMoney,entertainmentMoney,eduMoney;eatMoney=0;entertainmentMoney = 0;eduMoney=0;//int eatMoney_per,entertainmentMoney_per,eduMoney_per;while (query.next()) {if(query.value(1).toString()=="饮食"){eatMoney+=query.value(0).toInt();}else if(query.value(1).toString()=="娱乐"){entertainmentMoney+=query.value(0).toInt();}else if(query.value(1).toString()=="教育"){eduMoney+=query.value(0).toInt();}}*set<<eatMoney<<entertainmentMoney<<eduMoney;*setEntertainment<<entertainmentMoney;*setEdu<<eduMoney;/*while(query.next()){int i=1;if(query.value(1).toString()=="饮食"){*setEat<<query.value(0).toInt();//*setEntertainment<<0;//*setEdu<<0;category<<"饮食";}else if(query.value(1).toString()=="娱乐"){//*setEat<<0;*setEntertainment<<query.value(0).toInt();//*setEdu<<0;category<<"娱乐";}else if(query.value(1).toString()=="教育"){//*setEat<<0;//*setEntertainment<<0;*setEdu<<query.value(0).toInt();category<<"教育";}}*/category<<"饮食"<<"娱乐"<<"教育";QBarSeries *series = new QBarSeries();series->append(set);//series->append(setEntertainment);//series->append(setEdu);QChart *chart = new QChart();QString title = QString("您的%1月的账单统计图").arg(month);chart->setTitle(title);QBarCategoryAxis *axis = new QBarCategoryAxis();axis->append(category);chart->createDefaultAxes();chart->addSeries(series);chart->setAxisX(axis,series);ui->chartViewer->setChart(chart);
}void MainWindow::on_delet_pushButton_2_clicked()
{QListWidgetItem *listwidgetitem= ui->itemListWidget->currentItem();listwidgetitem->setHidden(true);QSqlQuery query;int curRow = ui->itemListWidget->currentIndex().row();     //鼠标选择删除第几行QModelIndex index = ui->itemListWidget->currentIndex();int id=index.sibling(curRow,0).data().toInt();QString str =QString("delete from item where id = '%1'").arg(curRow) ;query.exec(str);
}
//编辑按钮
void MainWindow::on_edit_pushButton_clicked()
{QSqlQuery query;query.exec("select id,money,type,content,addtime from item where id >= 1");QString str;QString str1;QString str2;QString str3;QString str4;QString str5;QDateTime dtm;int dtm0;while(query.next()){//query.value(0)是id的值，将其转换为int型//QString str0 = dtm.toString("yyyy-mm-dd hh:mm:ss");str1 = query.value(0).toString();str2 = query.value(1).toString();str3 = query.value(2).toString();str4 = query.value(3).toString();str5 = query.value(4).toString();//输出两个值qDebug() << str1<< str2<< str3<< str4<<str5 ;}
}void MainWindow::on_clearButton_clicked()
{QSqlQuery query;query.exec("drop table item");query.exec("drop table user");query.exec("drop table user_login");query.exec("drop table user_buget_setting");query.exec("create table item(id INTEGER PRIMARY KEY AUTOINCREMENT,money int,type varchar,content varchar,addtime time,useraccount varchar)");query.exec("create table user(id INTEGER PRIMARY KEY AUTOINCREMENT,useraccount varchar,userpassword varchar,useremail varchar)");query.exec("create table user_login(id INTEGER PRIMARY KEY AUTOINCREMENT ,useraccount varchar)");ui->itemListWidget->clear();
}
void MainWindow::user_login_sucess(){QSqlQuery query1;query1.exec("select  id,useraccount from user_login where id >= 0");while (query1.next()) {QString id = query1.value(0).toString();useraccount = query1.value(1).toString();qDebug()<<"mainwindow:"<<id<<useraccount;}qDebug()<<useraccount;QString sql = QString("select id,money,type,content,addtime,useraccount from item where useraccount = '%1'").arg(useraccount);query1.exec(sql);ui->itemListWidget->clear();while (query1.next()) {QString id = query1.value(0).toString();int money = query1.value(1).toInt();QString type = query1.value(2).toString();QString content = query1.value(3).toString();useraccount = query1.value(5).toString();newWidget = new itemWidget(money,type,content,ui->itemListWidget);QListWidgetItem *listwidgetitem = new QListWidgetItem(ui->itemListWidget,0);listwidgetitem->setSizeHint(QSize(50,50));ui->itemListWidget->setItemWidget(listwidgetitem,newWidget);ui->itemListWidget->show();qDebug()<<money<<type<<content<<useraccount;}
}void MainWindow::on_selectPieChart_clicked()
{int index;index = ui->monthSelector->currentIndex();chartsMaking(index+1);
}void MainWindow::on_selectLinerChart_clicked()
{int index;index = ui->monthSelector->currentIndex();barChartsMaking(index+1);
}

接下来是用户登录的代码

#include "userloginwindow.h"
#include "ui_userloginwindow.h"
#include<QFile>
#include<QString>
#include<QDialog>
#include<QFileDialog>
#include<QDebug>
#include<QSqlQuery>
#include<QSqlQueryModel>
#include<iostream>using namespace std;userLoginWindow::userLoginWindow(QWidget *parent) :QWidget(parent),ui(new Ui::userLoginWindow)
{ui->setupUi(this); this->setWindowTitle(" ");//注册页面ui->userID_reg->setPlaceholderText("请输入用户名");ui->userPassword_reg->setPlaceholderText("密码");ui->userPassword_reg_2->setPlaceholderText("确认密码");ui->userPassword_reg->setEchoMode(QLineEdit::Password);ui->userPassword_reg_2->setEchoMode(QLineEdit::Password);ui->userMail->setPlaceholderText("xxx@xxx.xxx");//注册操作connect(ui->reg_button,&QPushButton::clicked,this,&userLoginWindow::sendToDateBase_regist);//登陆操作connect(ui->loginButton,&QPushButton::clicked,this,&userLoginWindow::sendToDateBase_log);//登录界面ui->username->setPlaceholderText("请输入用户名");ui->userPassword->setEchoMode(QLineEdit::Password);ui->userPassword->setPlaceholderText("请输入密码");
}userLoginWindow::~userLoginWindow()
{delete ui;
}void userLoginWindow::on_registerButton_clicked()
{ui->log->hide();ui->reg->show();
}void userLoginWindow::on_return_button_clicked()
{ui->log->show();ui->reg->hide();
}
void userLoginWindow::sendToDateBase_regist(){QSqlQuery query;QString sql;QString str1 ,str2, str3;str1 = ui->userID_reg->text();str2 = ui->userPassword_reg->text();str3 = ui->userMail->text();QSqlQueryModel *model1=new QSqlQueryModel;sql = QString("select count (*)  from user where useraccount = '%1'").arg(str1);model1->setQuery(sql);QModelIndex index1=model1->index(0,0);//query.exec(sql);if(index1.data()==0){//如果这条数据不存在那么插入这条数据sql = QString("insert into user(id, useraccount, userpassword,useremail) values(NULL,'%1', '%2', '%3')").arg(str1).arg(str2).arg(str3);query.exec(sql);//debug测试query.exec("select id,useraccount,userpassword,useremail from user where id >= 1");while(query.next()){//query.value(0)是id的值，将其转换为int型//QString str0 = dtm.toString("yyyy-mm-dd hh:mm:ss");str1 = query.value(1).toString();str2 = query.value(2).toString();str3 = query.value(3).toString();//输出两个值qDebug() << str1<< str2<< str3 ;}qDebug()<<"注册成功";ui->userID_reg->clear();ui->userPassword_reg->clear();ui->userPassword_reg_2->clear();ui->userMail->clear();ui->reg->hide();ui->log->show();}else{qDebug()<<"用户已存在";}
}
void userLoginWindow::sendToDateBase_log(){QSqlQuery query;QString sql;QString str1 ,str2, str3;str1 = ui->username->text();//用户输入的用户名str2 = ui->userPassword->text();//用户输入的密码QSqlQueryModel *model1=new QSqlQueryModel;QSqlQueryModel *model2=new QSqlQueryModel;sql = QString("select count (*)  from user where useraccount = '%1'").arg(str1);model1->setQuery(sql);QModelIndex index1=model1->index(0,0);if(index1.data()==0){qDebug()<<"用户名不存在";}else{//获取该用户名下的密码进行对比sql=QString("select userpassword  from user where useraccount = '%1'").arg(str1);model2->setQuery(sql);QModelIndex index2=model2->index(0,0);if(index2.data()==str2){query.exec("create table user_login(id INTEGER PRIMARY KEY AUTOINCREMENT ,useraccount varchar)");//这张表是为了获取当前登录的用户，并以此来确定各个模块的显示sql = QString("insert into user_login(id,useraccount) values(NULL,'%1')").arg(str1);query.exec(sql);qDebug()<<"userlogwindow:"<<str1;emit loginSuccess();//将用户名作为信息传递出去//清空输入栏ui->username->clear();ui->userPassword->clear();this->close();qDebug()<<"登陆成功";}else{qDebug()<<"密码错误";}}
}void userLoginWindow::regUser()
{int user_num_int;qint64 pos;QFile file("userAccout.txt");bool isOk = file.open(QIODevice::ReadWrite|QIODevice::Text);if (isOk == true){pos=file.size();QString user_num = file.readLine();QTextStream txtout(&file);for (int i=0;i<user_num_int*4;i++){ if (file.canReadLine()) file.readLine();}txtout<<"------"<<endl;txtout<<ui->userID_reg->text()<<endl;txtout<<ui->userPassword_reg->text()<<endl;txtout<<ui->userMail->text()<<endl;user_num_int = user_num.toInt() + 1;file.close();}else qDebug()<<"Open Failed";isOk = file.open(QIODevice::WriteOnly|QIODevice::Text);if (isOk == true){QTextStream txtout(&file);txtout<<user_num_int<<endl;}ui->log->show();ui->reg->hide();ui->userID_reg->clear();ui->userPassword_reg->clear();ui->userPassword_reg_2->clear();ui->userMail->clear();
}

最后做完了整个项目后反思了一下，有这么几个做的不太好：

用户登录之后没有更改登录的状态显示，导致直接可以登录第二个用户，后期偷懒没有把这个做成更加美观的解决方案
很多地方都重复的使用了相同的代码，下一次可以试着做成一个简单的调用函数，降低各个版块之间的耦合度。
在做用户支出条目的时候没有实现条目的增删查改，只完成了条目的输入和清空，原因是我发现删改在QListWidget里实现比较麻烦，在翻阅了他的官方文档后他提示我要使用QListView，但那时已经接近项目结束了所以就没有重写。
最后一点就是有时候我太放心别人写的东西了，要保持自己怀疑的心。

最后放上我的GitHub地址：TankNee’s Repo -CashBook

万分感谢各位合作的队友们

也感谢那个没有因为情感因素而陷入苦恼的我。

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