Qt——连接mysql增删查改（仓库管理极简版）
目录
UI布局设计
.pro文件
mainwindow.h
main.cpp
UI布局设计
.pro文件
QT += core gui
QT += core gui sql
QT += sql
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++11
# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS
# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp \
mainwindow.cpp
HEADERS += \
mainwindow.h
FORMS += \
mainwindow.ui
# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += targetmainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include
#include
#include
#include
#include
#include
QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
private slots:
void ReshowTable_goods();
void ReshowTable_people();
void on_move_goods_clicked();
void on_move_people_clicked();
void on_pushButton_addgoods_clicked();
void on_pushButton_selectgoods_clicked();
void on_pushButton_changegoods_clicked();
void on_pushButton_deletegoods_clicked();
void on_pushButton_addpeople_clicked();
void on_pushButton_selectpeople_clicked();
void on_pushButton_changepeople_clicked();
void on_pushButton_deletepeople_clicked();
private:
Ui::MainWindow *ui;
QSqlDatabase db= QSqlDatabase::addDatabase("QMYSQL");
QSqlQueryModel *goodsMode;//货物数据模型
QSqlQueryModel *peopleMode;//工作人员数据模型
};
#endif // MAINWINDOW_H
main.cpp
#include "mainwindow.h"
#include
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
void sqlconnect(QWidget* parent);
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
goodsMode = new QSqlQueryModel(ui->tableView_goods);
peopleMode = new QSqlQueryModel(ui->tableView_people);//绑定
sqlconnect(this);
}
void sqlconnect(QWidget* parent)
{
//连接数据库
QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL");
db.setHostName("127.0.0.1");
db.setPort(3306);
db.setDatabaseName("sqlconnect");//数据库名称
db.setUserName("root");//用户名
db.setPassword("");//密码
qDebug()<<"available drivers:";
QStringList drivers = QSqlDatabase::drivers();
for(auto driver: drivers)
qDebug() << driver;
bool ok = db.open();
if(ok==0)
{
QMessageBox::information(parent, "提示","数据库连接失败");
parent->close();
qDebug()<<"数据库连接失败";
}
//若数据库中没有表，则新建
QSqlQuery query;
QString createTableGoods="create table if not exists goods(id int primary key auto_increment,name varchar(10),number int, price varchar(10), data varchar(15),server varchar(10),endline int,code varchar(15));";
QString createTableWoker="create table if not exists woker(name varchar(10),phonenumber varchar(20), sex varchar(8), age int);";
query.exec(createTableGoods);
query.exec(createTableWoker);
}
MainWindow::~MainWindow()
{
delete ui;
}
//___________________________________________________________________________________________________________
void MainWindow::ReshowTable_goods()
{
goodsMode->setHeaderData(0,Qt::Horizontal,tr("入库编号"));
goodsMode->setHeaderData(1,Qt::Horizontal,tr("名称"));
goodsMode->setHeaderData(2,Qt::Horizontal,tr("数量"));
goodsMode->setHeaderData(3,Qt::Horizontal,tr("单价"));
goodsMode->setHeaderData(4,Qt::Horizontal,tr("生产日期"));
goodsMode->setHeaderData(5,Qt::Horizontal,tr("供应商"));
goodsMode->setHeaderData(6,Qt::Horizontal,tr("保质期"));
goodsMode->setHeaderData(7,Qt::Horizontal,tr("条形码编号"));
ui->tableView_goods->setModel(goodsMode);
}
void MainWindow::on_move_goods_clicked()
{
ui->stackedWidget->setCurrentIndex(0);
}
void MainWindow::on_move_people_clicked()
{
ui->stackedWidget->setCurrentIndex(1);
}
void MainWindow::on_pushButton_addgoods_clicked()
{
QString id = ui->lineEdit_goods_id->text();
QString name = ui->lineEdit_goods_name->text();
QString number = ui->lineEdit_goods_number->text();
QString price = ui->lineEdit_goods_price->text();
QString data = ui->lineEdit_goods_data->text();
QString server = ui->lineEdit_goods_server->text();
QString endline = ui->lineEdit_goods_endline->text();
QString code = ui->lineEdit_goods_code->text();
QSqlQuery query;
QString str1 = "" + id +",'"+ name +"'," + number + ",'" +price+"','"+data+"','" +server+"',"+endline+",'"+ code+"'";
QString str = "insert into goods(id,name,number,price,data,server,endline,code) values("+ str1 +");";
bool success = query.exec(str);
if(success)
{
QMessageBox::information(this, "提示","入库成功");
}
else
{
QMessageBox::information(this, "提示","入库失败，请检查输入的数据是否正确");
}
goodsMode->setQuery("select * from goods;");
ReshowTable_goods();
}
void MainWindow::on_pushButton_selectgoods_clicked()
{
goodsMode->setQuery("select * from goods;");
ReshowTable_goods();
}
void MainWindow::on_pushButton_changegoods_clicked()
{
QSqlQuery query;
QString str = "update goods set id = '"+ ui->lineEdit_goods_id->text() + "', name='" + ui->lineEdit_goods_name->text()
+ "',number='" + ui->lineEdit_goods_number->text() + "',price='" + ui->lineEdit_goods_price->text()
+ "',server='" + ui->lineEdit_goods_server->text()+ "',data='" + ui->lineEdit_goods_data->text()
+ "',code='" + ui->lineEdit_goods_code->text()+ "',endline='" + ui->lineEdit_goods_endline->text()
+ "' where number='" + ui->lineEdit_goods_id->text() + "';";
query.exec(str);
QMessageBox::information(this, "修改成功", "表信息修改成功");
goodsMode->setQuery("select * from goods;");
ReshowTable_goods();
}
void MainWindow::on_pushButton_deletegoods_clicked()
{
QSqlQuery query;
int currentrow = ui->tableView_goods->currentIndex().row();
goodsMode->removeRow(currentrow);
if(currentrow != -1)//若选中一行
{
int ok = QMessageBox::warning(this,tr("删除当前行!"),tr("你确定删除当前行吗？"), QMessageBox::Yes,QMessageBox::No);
//如确认删除
if(ok == QMessageBox::Yes)
{
goodsMode->removeRow(currentrow);
QString id = goodsMode->data(goodsMode->index(currentrow,0)).toString();//获取id
QString del = "delete from goods where id='" + id + "';";
query.exec(del);
goodsMode->setQuery("select * from goods");
ui->tableView_goods->setModel(goodsMode);
QMessageBox::information(this, "删除成功", "所选信息删除成功");
}
}
else
QMessageBox::information(this, "提示", "请选择你要删除的信息行");
}
//__________________________________________________________________________________________________________________
void MainWindow::ReshowTable_people()
{
peopleMode->setHeaderData(0,Qt::Horizontal,tr("姓名"));
peopleMode->setHeaderData(1,Qt::Horizontal,tr("性别"));
peopleMode->setHeaderData(2,Qt::Horizontal,tr("年龄"));
peopleMode->setHeaderData(3,Qt::Horizontal,tr("电话"));
ui->tableView_people->setModel(peopleMode);
}
void MainWindow::on_pushButton_addpeople_clicked()
{
QString name = ui->lineEdit_people_name->text();
QString sex = ui->lineEdit_people_sex->text();
QString age = ui->lineEdit_people_age->text();
QString phonenumber = ui->lineEdit_people_phonenumber->text();
QSqlQuery query;
QString str1 = "'" + name +"','"+ phonenumber +"','" + sex + "'," +age+"";
QString str = "insert into woker(name,phonenumber,sex,age) values("+ str1 +");";
bool success = query.exec(str);
if(success)
{
QMessageBox::information(this, "提示","增加成功");
}
else
{
QMessageBox::information(this, "提示","操作失败，请检查输入的数据是否正确");
}
goodsMode->setQuery("select * from woker;");
ReshowTable_people();
}
void MainWindow::on_pushButton_selectpeople_clicked()
{
peopleMode->setQuery("select * from woker;");
ReshowTable_people();
}
void MainWindow::on_pushButton_changepeople_clicked()
{
QSqlQuery query;
QString str = "update goods set name = '"+ ui->lineEdit_people_name->text() + "', sex='" + ui->lineEdit_people_sex->text()
+ "',age=" + ui->lineEdit_people_age->text() + ",phonenumber='" + ui->lineEdit_people_phonenumber->text()
+ "' where number='" + ui->lineEdit_goods_id->text() + "';";
query.exec(str);
QMessageBox::information(this, "修改成功", "表信息修改成功");
goodsMode->setQuery("select * from woker;");
ReshowTable_people();
}
void MainWindow::on_pushButton_deletepeople_clicked()
{
QSqlQuery query;
int currentrow = ui->tableView_people->currentIndex().row();
peopleMode->removeRow(currentrow);
if(currentrow != -1)//若选中一行
{
int ok = QMessageBox::warning(this,tr("删除当前行!"),tr("你确定删除当前行吗？"), QMessageBox::Yes,QMessageBox::No);
//如确认删除
if(ok == QMessageBox::Yes)
{
peopleMode->removeRow(currentrow);
QString name = peopleMode->data(peopleMode->index(currentrow,0)).toString();//获取姓名
QString del = "delete from woker where name='" + name + "';";
query.exec(del);
peopleMode->setQuery("select * from woker");
ui->tableView_people->setModel(peopleMode);
QMessageBox::information(this, "删除成功", "所选信息删除成功");
}
}
else
QMessageBox::information(this, "提示", "请选择你要删除的信息行");
}
连接本地mysql，如果要在别的地方运行，要有mysql的环境