清晰的QT+mysql学生管理系统.zip

#include "adminloginmange.h" #include "ui_adminloginmange.h" #include <QDebug> #include <QSqlDatabase> #include <QMessageBox> #include <QSqlError> #include<QSqlQuery> #define StyleBtn "QLabel{ text-align:center; min-width:200px; min-height:100px;} QPushButton{ width:80px; height:50px;background-color:#0088C1; color:white; border-radius:7px; font-size:18px; font-family:'lucida grande'; font-weight:bold; } QPushButton::hover{background-color:#00FFFF; color:red;}" AdminLoginMange::AdminLoginMange(QWidget *parent) : QWidget(parent), ui(new Ui::AdminLoginMange) { ui->setupUi(this); //连接学生数据库 QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL"); db.setHostName("127.0.0.1");//数据库服务器ip db.setUserName("root");//数据库用户名 db.setPassword("123");//数据库密码 db.setDatabaseName("mystumanger");//使用哪个数据库 if( !db.open() ) { QMessageBox::warning(this,"错误",db.lastError().text() );//打开失败,显示错误信息 return; } } AdminLoginMange::~AdminLoginMange() { delete ui; } void AdminLoginMange::exec_sql(QString sql, QString mess) { QSqlQuery query; bool ok = query.exec(sql); if( ok ) { QMessageBox *box = new QMessageBox(QMessageBox::Information,"恭喜您",QString("%1成功^_^!").arg(mess) ); box->setStyleSheet(StyleBtn); box->exec(); } else { QMessageBox *box = new QMessageBox(QMessageBox::Warning,"真是遗憾呢",QString("%1失败O_O").arg(mess) ); box->setStyleSheet(StyleBtn); box->exec(); } } void AdminLoginMange::on_Btninsert_clicked()//插入 { int id = ui->Lineid->text().toInt(); int score = ui->Linescore->text().toInt(); int age = ui->Lineage->text().toInt(); QString name = ui->Linename->text(); QString sex = ui->Linesex->text(); QString qq = ui->Lineqq->text(); QString sql = QString("insert into studentlogin(id,name,age,sex,qq,score) values('%1','%2','%3','%4','%5','%6')").arg(id).arg(name).arg(age).arg(sex).arg(qq).arg(score); exec_sql(sql,"插入"); } void AdminLoginMange::on_pushButton_clicked()//查找 { int id = ui->LineFindId->text().toInt(); QSqlQuery query; QString in = QString("select id,name,sex,score,qq,age from studentlogin where id='%1'").arg(id); query.exec(in); if( query.next() )//找到了这个学号 { ui->Lineid->setText(query.value("id").toString() ); ui->Linename->setText( query.value("name").toString() ); ui->Lineage->setText(query.value("age").toString() ); ui->Lineqq->setText(query.value("qq").toString() ); ui->Linescore->setText(query.value("score").toString() ); ui->Linesex->setText(query.value("sex").toString() ); } else { QMessageBox *box = new QMessageBox(QMessageBox::Warning,"真是遗憾呢","并没有这个人O_O~"); box->setStyleSheet(StyleBtn); box->exec(); } } void AdminLoginMange::on_Btnupdate_clicked()//更新 { int id = ui->Lineid->text().toInt(); int score = ui->Linescore->text().toInt(); int age = ui->Lineage->text().toInt(); QString name = ui->Linename->text(); QString sex = ui->Linesex->text(); QString qq = ui->Lineqq->text(); QString sql = QString("update studentlogin set name='%1',age='%2',sex='%3',qq='%4',score='%5' where id='%6'").arg(name).arg(age).arg(sex).arg(qq).arg(score).arg(id); exec_sql(sql,"更新"); } void AdminLoginMange::on_Btndel_clicked() { int id = ui->Lineid->text().toInt(); QString sql = QString("delete from studentlogin where id='%1'").arg(id); exec_sql(sql,"删除"); } void AdminLoginMange::on_Btnback_clicked() { emit AdminLoginMange_close(); this->close(); }