QT智能停车场系统代码

#include "widget.h" #include "ui_widget.h" #include <QJsonDocument> #include <QJsonObject> #include <QJsonArray> #include <QDebug> #include <QBuffer> #include <QSqlRecord> #include <QUrlQuery> // 引入URL查询类，用于构建URL的查询参数 #include <QRandomGenerator> //随机数 #include <QDateTime> //获取时间 Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); form = new Form; speeker = new QTextToSpeech; // 创建一个文本转语音对象 //数据库 qDebug()<<"drivers:"<<QSqlDatabase::drivers(); if(QSqlDatabase::contains("qt_sql_default_connnection")){ db = QSqlDatabase::database("qt_sql_default_connection"); //如果存在，获取该连接 }else{ db = QSqlDatabase::addDatabase("QSQLITE"); } db.setDatabaseName("my.db"); // 设置数据库文件名 if(db.isOpen()){ return; // 如果已打开，直接返回 }else { if(!db.open()){ qDebug()<<"open:"<<db.lastError().text(); return; // 打开失败，返回 } } qDebug()<<"数据库打开成功"; QString sql = "create table if not exists packing_t(packing int,license text,duration int,cost int,start string);"; QSqlQuery query(sql); // 创建QSqlQuery对象用于执行SQL语句 if(!query.exec()){ // 执行SQL语句创建表 qDebug()<<"create:"<<query.lastError().text(); } //车牌识别 httphelper = new QNetworkAccessManager; httpmanager = new QNetworkAccessManager; httpmanager_li = new QNetworkAccessManager; connect(httphelper, &QNetworkAccessManager::finished,this, &Widget::onNetworkReplyFinished); connect(httpmanager, &QNetworkAccessManager::finished,this, &Widget::read_ack); connect(httpmanager_li, &QNetworkAccessManager::finished,this, &Widget::li_ack); connect(form, QOverload<>::of(&Form::backForm), this, &Widget::show); connect(this, &Widget::dashboard_value, form, &Form::countItemsInPackingT); } Widget::~Widget() { delete ui; delete speeker; // 释放内存 } void Widget::onNetworkReplyFinished(QNetworkReply *reply) { while(reply->canReadLine()) { QByteArray buf = reply->readLine(); qDebug()<<buf; // 示例响应数据格式，用于参考:{"model":"deepseek-r1:7b","created_at":"2025-02-06T04:05:03.7173837Z","message":{"role":"assistant","content":"\u003cthink\u003e"},"done":false} QJsonDocument doc = QJsonDocument::fromJson(buf); // 将读取到的 JSON 数据解析为 QJsonDocument 对象 QJsonObject obj = doc.object(); // 从 QJsonDocument 中获取 JSON 对象 // 从 JSON 对象中提取 "message" 字段下的 "content" 字段的值，并转换为字符串 QString answer = obj.value("message").toObject().value("content").toString(); qDebug()<< answer; if(answer[0] != '<') // 如果答案的第一个字符不是 '<' ui->textEdit_down->insertPlainText(answer); QCoreApplication::processEvents(); // 处理当前的事件队列，确保界面能及时更新 //QString message = ui->textEdit_down->toPlainText(); //speeker->say(message); } } //槽函数：接受车牌信息，将识别到的车牌信息显示到car_line上 void Widget::read_ack(QNetworkReply* r) { QByteArray buf = r->readAll(); qDebug() << buf; // 输出响应数据到调试信息中 QJsonDocument myjson = QJsonDocument::fromJson(buf); QJsonObject node = myjson.object(); // 获取 JSON 文档的根对象 QJsonObject arr = node.value("words_result").toObject(); QString text = arr.value("number").toString(); ui->car_line->setText(text); QSqlQuery query1("SELECT packing FROM packing_t"); QSet<int> existingNumbers; while (query1.next()) { int number = query1.value(0).toInt(); existingNumbers.insert(number); } // 生成1到60的随机数，直到生成一个不在数据库中的数 QRandomGenerator randomGenerator; int randomNumber; do { randomNumber = randomGenerator.bounded(1, 61); } while (existingNumbers.contains(randomNumber)); QDateTime currentDateTime = QDateTime::currentDateTime(); QString formattedDateTime = currentDateTime.toString("yyyy-MM-dd hh:mm:ss"); QString sql = QString("insert into packing_t values('%1','%2','%3','%4','%5')") .arg(randomNumber).arg(text).arg(0).arg(0).arg(formattedDateTime); qDebug()<<"sql:"<<sql; QSqlQuery query; if(!query.exec(sql)){ qDebug()<<"insert:"<<query.lastError().text(); return; } QString message = QString("欢迎光临小球藻停车场：%1 ，驶进时间：%2，费用5元每小时").arg(text).arg(formattedDateTime); //语音播报 speeker->say(message); QMessageBox::information(this,"提示",message); } void Widget::on_pushButton_clicked() // 停车场智能助手信息发送 { ui->textEdit_down->clear(); QNetworkRequest _quest; // 创建一个 QNetworkRequest 对象，用于设置网络请求的相关信息 _quest.setUrl((QUrl("http://127.0.0.1:11434/api/chat"))); _quest.setHeader(QNetworkRequest::ContentTypeHeader,"application/json"); QJsonDocument document; QJsonObject obj; obj.insert("model","deepseek-r1:7b"); QJsonObject obj1; obj1.insert("role","system"); obj1.insert("content","请用一句话介绍"+ui->textEdit_up->toPlainText()); QJsonArray arr; arr.append(obj1); // 示例格式：obj.insert("messages": [{"role": "system", "content": "您是足球专家"}]); obj.insert("messages",arr); document.setObject(obj); QByteArray _postData = document.toJson(QJsonDocument::Compact); httphelper->post(_quest,_postData); } void Widget::on_pushButton_2_clicked() //进入：上传车牌图片 { QString filePath = QFileDialog::getOpenFileName(this, "选择图片", "", "图片文件 (*.png *.jpg *.jpeg)"); // 打开文件对话框，让用户选择图片文件 if (!filePath.isEmpty()) { QPixmap pixmap(filePath); if (!pixmap.isNull()) { ui->label->setPixmap(pixmap.scaled(ui->label->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation)); } } } void Widget::on_pushButton_3_clicked() //进入：识别车牌图片 { if (ui->label->pixmap() == nullptr) { QMessageBox::warning(this, "警告", "未识别到车牌，请上传图片。"); return; } ui->textEdit_down->clear(); QString accessToken = "24.4b9109f3097e6023cda0792ed68c9708.2592000.1748943185.282335-118743090"; QUrl url("https://aip.baidubce.com/rest/2.0/ocr/v1/license_plate"); QUrlQuery query; query.addQueryItem("access_token", accessToken); url.setQuery(query); QNetworkRequest myrequset; // 创建请求对象 myrequset.setUrl(url); // 设置请求的 URL myrequset.setHeader(QNetworkRequest::ContentTypeHeader,"application/x-www-form-urlencoded"); // 获取图片并进行 Base64 编码 QPixmap pixmap = *ui->label->pixmap(); QByteArray byteArray; QBuffer buffer(&byteArray); buffer.open(QIODevice::WriteOnly); pixmap.save(&buffer, "PNG"); QByteArray buf64 = byteArray.toBase64().toPercentEncoding(); QByteArray body = "image=" + buf64; httpmanager->post(myrequset, body); } void Widget::on_cha_clicked() //进入查询界面 { this->hide(); form->show(); QTableWidget *tableWidget = form->getTableWidget(); tableWidget->clearContents(); tableWidget->setRowCount(0); QSqlQuery query("SELECT * FROM packing_t", QSqlDatabase::database()); if (query.exec()) { int row = 0; while (query.next()) { tableWidget->insertRow(row); for (int col = 0; col