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#include "serch.h"
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#include "ui_serch.h"
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#include <QSqlQuery>
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#include <QMessageBox>
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#include <QSqlDatabase>
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#include <QDebug>
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#include <QGraphicsDropShadowEffect> //设置阴影
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serch::serch(QWidget *parent) : QDialog(parent),
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ui(new Ui::serch)
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{
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ui->setupUi(this);
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this->setWindowTitle("查询");
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//插入图片
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QPixmap tian(":/tian.png");
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ui->label_4->setPixmap(tian);
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//设置阴影
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QGraphicsDropShadowEffect *shadow = new QGraphicsDropShadowEffect(this);
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shadow->setOffset(-3, 0);
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shadow->setColor(QColor("#aaffff"));
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shadow->setBlurRadius(80);
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ui->label_4->setGraphicsEffect(shadow);
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// 确保数据库连接已经成功建立
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QSqlDatabase db = QSqlDatabase::database("text01", false); // 使用已共享的数据库连接
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if (!db.isOpen()) {
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QMessageBox::critical(this, "错误", "数据库未连接成功！");
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return;
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}
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this->setWindowFlags(Qt::WindowCloseButtonHint | Qt::WindowMinimizeButtonHint | Qt::WindowMaximizeButtonHint);
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}
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serch::~serch()
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{
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// 可以选择在这里显式关闭数据库连接
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QSqlDatabase::database("text01").close();
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delete ui;
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}
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void serch::on_pushButton_2_clicked()
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{
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// 清除查询条件和显示区域
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ui->lineEdit->clear();
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ui->textBrowser_4->clear();
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ui->textBrowser_5->clear();
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this->close();
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}
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void serch::on_pushButton_clicked()
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{
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// 获取用户输入的车辆号码
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QString str = ui->lineEdit->text();
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if (str.isEmpty()) {
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QMessageBox::warning(this, "警告", "请输入车辆号码！");
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return;
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}
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// 获取共享的数据库连接
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QSqlDatabase db = QSqlDatabase::database("text01", false);
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if (!db.isOpen()) {
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QMessageBox::critical(this, "错误", "数据库未连接成功！");
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return;
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}
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// 查询语句
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QString temp = QString("SELECT * FROM message WHERE number='%1'").arg(str);
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QSqlQuery query(db); // 使用数据库连接 db
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if (query.exec(temp) && query.next()) {
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// 数据库查询成功，获取并显示数据
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int t = query.value(1).toInt(); // 假设字段顺序是：t, m
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int m = query.value(2).toInt();
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QString times = QString::number(t);
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QString total_time = QString::number(m);
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ui->textBrowser_4->setText(times);
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ui->textBrowser_5->setText(total_time);
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}
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else {
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// 查询失败，显示警告
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QMessageBox::warning(this, "警告", "车辆未进入过停车场！", QMessageBox::Yes);
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ui->lineEdit->clear();
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ui->textBrowser_4->clear();
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ui->textBrowser_5->clear();
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}
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}
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