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 += target

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QMessageBox>
#include <QtSql/QSqlDatabase>
#include <QtSql/QSqlQuery>
#include <QDebug>
#include <QtSql/QSqlQueryModel>

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 <QApplication>

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

相关推荐
喵叔哟10 分钟前
重构代码中引入外部方法和引入本地扩展的区别
java·开发语言·重构
尘浮生16 分钟前
Java项目实战II基于微信小程序的电影院买票选座系统(开发文档+数据库+源码)
java·开发语言·数据库·微信小程序·小程序·maven·intellij-idea
六月闻君29 分钟前
MySQL 报错:1137 - Can‘t reopen table
数据库·mysql
hopetomorrow29 分钟前
学习路之PHP--使用GROUP BY 发生错误 SELECT list is not in GROUP BY clause .......... 解决
开发语言·学习·php
小牛itbull39 分钟前
ReactPress vs VuePress vs WordPress
开发语言·javascript·reactpress
请叫我欧皇i1 小时前
html本地离线引入vant和vue2(详细步骤)
开发语言·前端·javascript
闲暇部落1 小时前
‌Kotlin中的?.和!!主要区别
android·开发语言·kotlin
白云如幻1 小时前
SQL99版链接查询语法
数据库·sql·mysql
GIS瞧葩菜1 小时前
局部修改3dtiles子模型的位置。
开发语言·javascript·ecmascript
chnming19871 小时前
STL关联式容器之set
开发语言·c++