JSON打包与解析，通过信号槽实现线程池子线程主线程之间JOSN数据传递

需求：加载文件夹下的所有csv文件路径到list，进行处理    
思路：线程池子线程传递数据到主线程，进行整合处理

主要技术点：json解析打包、线程池、文件操作、struct、vector、map等容器

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关键代码：

步骤一：点击按钮实现文件加载到list

void ReportAnalysisTool::on_btnOpenDir_clicked()
{
    QString  dir = QFileDialog::getExistingDirectory(this,
        QString("Select Data File to load"),
        QString("D:/"),
        QFileDialog::ShowDirsOnly
        | QFileDialog::DontResolveSymlinks);
    ui.le_path->setText(dir);
    if (dir.isEmpty()) return;

    m_fileInfoList = m_fromDataMoudle.readCsvFileList(dir, CSV_SUFFIX);
QDateTime curTime = QDateTime::currentDateTime();
    for (int i = 0; i < m_fileInfoList.size(); i++)
    {
        DealCsvRunnable* dealRunnable = new DealCsvRunnable();
        connect(dealRunnable, SIGNAL(board_result(QJsonDocument, QString)), this, SLOT(board_result_slot(QJsonDocument,QString)));
        //connect(dealRunnable, SIGNAL(device_result(QJsonDocument, QString)), this, SLOT(device_result_slot(QJsonDocument, QString)));
        QString fileName = m_fileInfoList.at(i).absoluteFilePath();
        dealRunnable->setFileName(fileName);
        QThreadPool::globalInstance()->start(dealRunnable, QThread::NormalPriority);
    }