modularization/src/detection/trafficlight_software/main.cpp

#include "mainwindow.h"
#include <QApplication>

#include <QFile>
#include <QMessageLogContext>
#include <QDebug>
#include <QDateTime>
#include <QDir>
#include <QMutex>

void outputMessage(QtMsgType type, const QMessageLogContext &context, const QString &msg);

int main(int argc, char *argv[])
{
    // 安装消息处理函数
    qInstallMessageHandler(outputMessage);

    QApplication a(argc, argv);
    MainWindow w;
    w.show();

    return a.exec();
}

void outputMessage(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
    static QMutex mutex;
    mutex.lock();
    QByteArray localMsg = msg.toLocal8Bit();
    QString text;
    switch (type) {
    case QtDebugMsg:
        text = QString("Debug:");
        break;
    case QtWarningMsg:
        text = QString("Warning:");
        break;
    case QtCriticalMsg:
        text = QString("Critical:");
        break;
    case QtFatalMsg:
        text = QString("Fatal:");
        break;
    default:
        text = QString("Debug:");
        break;
    }

    // 输出信息格式
    const QString context_info = QString("File:(%1)").arg(QString(context.file));
    const QString strDataTime = QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss");
#ifdef DEBUG
    const QString strMessage = QString("[%1] [%2]\t[%3]\t[%4]").arg(text).arg(strDataTime).arg(context_info).arg(msg);
#else
    const QString strMessage = QString("[%1] [%2]\t[%3]\t[%4]").arg(text).arg(strDataTime).arg(context_info).arg(msg);
#endif

    // 输出信息到文件中
    const QString strFilePath = QString(QDir::toNativeSeparators(QApplication::applicationDirPath()) + QDir::toNativeSeparators("/log/"));
    const QString strFileName = QString(strFilePath + QDateTime::currentDateTime().toString("yyyy-MM-dd").append("-log.txt"));
    if(!QDir(strFilePath).exists()){
        QDir(strFilePath).mkdir(strFilePath);
    }
    QFile file(strFileName);
    file.open(QIODevice::ReadWrite | QIODevice::Append);
    QTextStream stream(&file);
    stream << strMessage << "\r\n";
    file.flush();
    file.close();
    //解锁
    mutex.unlock();
}