客户端和服务器通信检查版本基础功能实现，缺少客户端获取version及os-arch功能

Author: lianjiaQAQ-zyl

src/BarcodeWidget.cpp

@@ -7,6 +7,7 @@
 #include "version_info/version.h"
 #include <QCheckBox>
 #include <QComboBox>
+#include <QDesktopServices>
 #include <QFileDialog>
 #include <QFont>
 #include <QFutureWatcher>
@@ -361,6 +362,8 @@ BarcodeWidget::BarcodeWidget(QWidget *parent)
     if (!styleSheet.isEmpty()) {
         this->setStyleSheet(styleSheet);
     }
+    // 进行版本检查
+    QTimer::singleShot(0, this, &BarcodeWidget::checkUpdateOnStartup);
 }
 
 void BarcodeWidget::updateButtonStates() const {
@@ -1119,6 +1122,46 @@ ZXing::BarcodeFormat BarcodeWidget::stringToBarcodeFormat(const QString &formatS
     return map.value(key, ZXing::BarcodeFormat::None); // 未匹配时返回None
 }
 
+void BarcodeWidget::checkUpdateOnStartup() {
+    if (!m_updateChecker) {
+        m_updateChecker = new UpdateChecker(this);
+    }
+    // 后端接口地址
+    QUrl apiUrl("http://106.14.192.58:10000/update/check_version");
+    // 获取当前版本和架构
+    //QString version = version::git_tag.data();
+    //QString architecture = version::architecture.data();
+    QString test_version = "v1.0";
+    QString test_os = "windows-x64";
+    UpdateCheckRequest request(test_version, test_os);
+    // 连接信号
+    connect(m_updateChecker, &UpdateChecker::UpdateAvailable, this, [this](const UpdateInfo &info) {
+        QMessageBox box(this);
+        box.setWindowTitle("发现新版本");
+        box.setText(QString("最新版本：%1\n\n更新日志：\n%2\n\n更新链接：%3\n")
+                        .arg(info.latest, info.changeLog, info.downloadUrl));
+
+        QPushButton *btnUpdate = box.addButton("立即更新", QMessageBox::AcceptRole);
+        QPushButton *btnLater = box.addButton("稍后再说", QMessageBox::RejectRole);
+
+        box.exec();
+
+        if (box.clickedButton() == btnUpdate) {
+            QDesktopServices::openUrl(QUrl(info.downloadUrl));
+        } else if (box.clickedButton() == btnLater) {
+            // 关闭弹窗即可；exec() 返回后 box 会析构
+        }
+    });
+    connect(m_updateChecker, &UpdateChecker::NoUpdate, this, []() { spdlog::info("No update!"); });
+
+    connect(m_updateChecker, &UpdateChecker::ErrorOccured, this, [](const QString &msg) {
+        spdlog::error("UpdateCheck Error, Error Message: {}", msg.toStdString());
+    });
+
+    // 发起检查
+    m_updateChecker->Check(apiUrl, request);
+}
+
 void BarcodeWidget::setupLanguageAction() {
     LanguageManager &languageMgr = LanguageManager::instance();
 

src/BarcodeWidget.h

@@ -8,6 +8,7 @@
 #include <qfuturewatcher.h>
 
 #include "CameraWidget.h"
+#include "UpdateChecker.h"
 #include "convert.h"
 #include "mqtt/MQTTMessageWidget.h"
 #include "mqtt/mqtt_client.h"
@@ -122,6 +123,12 @@ private slots:
      */
     static ZXing::BarcodeFormat stringToBarcodeFormat(const QString &formatStr);
 
+    /**
+     * @brief 在程序启动时与服务器通信判断是否需要更新
+     *
+     */
+    void checkUpdateOnStartup();
+
 private:
     /**
      * @brief 初始化语言切换的Action
@@ -173,4 +180,5 @@ private slots:
     std::unique_ptr<MqttSubscriber> subscriber_;                              /**< MQTT订阅者实例 */
     std::unique_ptr<MQTTMessageWidget> messageWidget;                         /**< MQTT消息展示窗口 */
     CameraWidget preview;                                                     /**< 摄像头预览窗口 */
+    UpdateChecker *m_updateChecker = nullptr;                                 /**< 版本检查实例 */
 };

src/UpdateChecker.cpp

@@ -0,0 +1,53 @@
+#include "UpdateChecker.h"
+#include <QJsonDocument>
+#include <QNetworkReply>
+#include <QNetworkRequest>
+#include <QTimer>
+
+UpdateChecker::UpdateChecker(QObject *parent)
+    : QObject(parent) {}
+
+void UpdateChecker::Check(const QUrl &apiUrl, const UpdateCheckRequest &request) {
+    // 1. 构造 request
+    QNetworkRequest req(apiUrl);
+    req.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+    QJsonDocument doc(request.toJson());
+    QByteArray body = doc.toJson(QJsonDocument::Compact);
+
+    // 2. 发送网络请求，超时处理
+    QNetworkReply *reply = m_nam.post(req, body);
+    QTimer *timer = new QTimer(reply);
+    timer->setSingleShot(true);
+    timer->start(4000);
+    QObject::connect(timer, &QTimer::timeout, reply, [reply]() { reply->abort(); });
+
+    // 3. 收到回包处理
+    QObject::connect(reply, &QNetworkReply::finished, this, [this, reply]() {
+        const auto err = reply->error();
+        const QByteArray body = reply->readAll();
+        reply->deleteLater();
+        // 3.1 出错处理
+        if (err != QNetworkReply::NoError) {
+            emit ErrorOccured(QString("网络错误: %1").arg(reply->errorString()));
+            return;
+        }
+        // 3.2 读取回包
+        QJsonParseError pe{};
+        QJsonDocument doc = QJsonDocument::fromJson(body, &pe);
+        if (pe.error != QJsonParseError::NoError || !doc.isObject()) {
+            emit ErrorOccured(QString("返回不是合法 json"));
+            return;
+        }
+        QJsonObject o = doc.object();
+        UpdateInfo info;
+        info.latest = o.value("version").toString();
+        info.downloadUrl = o.value("update_url").toString();
+        info.changeLog = o.value("update_log").toString();
+        info.updateNeed = o.value("update_need").toBool();
+        if (info.updateNeed) {
+            emit UpdateAvailable(info);
+        } else {
+            emit NoUpdate();
+        }
+    });
+}

src/UpdateChecker.h

@@ -0,0 +1,38 @@
+#pragma once
+#include <QJsonObject>
+#include <QNetworkAccessManager>
+#include <QObject>
+
+struct UpdateInfo {
+    QString latest;      /**< 最新版本号 */
+    QString downloadUrl; /**< 下载路径 */
+    QString changeLog;   /**< 版本更新日志 */
+    bool updateNeed;  /**< 是否需要更新 */
+};
+
+struct UpdateCheckRequest {
+    QString version; /**< 客户端版本 */
+    QString osArch;  /**< 客户端架构 */
+    UpdateCheckRequest(const QString _version, const QString _os)
+        : version(_version), osArch(_os) {}
+    // 序列化成 JSON
+    QJsonObject toJson() const {
+        QJsonObject o;
+        o.insert("version", version);
+        o.insert("os-arch", osArch);
+        return o;
+    }
+};
+class UpdateChecker : public QObject {
+    Q_OBJECT
+public:
+    explicit UpdateChecker(QObject *parent = nullptr);
+    void Check(const QUrl &apiUrl, const UpdateCheckRequest &request);
+signals:
+    void NoUpdate();
+    void UpdateAvailable(const UpdateInfo &info);
+    void ErrorOccured(const QString &msg);
+
+private:
+    QNetworkAccessManager m_nam;
+};