Qt 遍历指定路径下指定格式文件名称

    QString path=QFileDialog::getExistingDirectory(NULL, tr("选择文件夹"),QDir::currentPath(),QFileDialog::ShowDirsOnly);
    QDir *dir=new QDir(path);
    QStringList filter;
    filter<<"*.dav";
    dir->setNameFilters(filter);
    QList<QFileInfo> *fileInfo=new QList<QFileInfo>(dir->entryInfoList(filter));
    for(int i=0;i<fileInfo->length();i++){

        ui->textBrowser->append(fileInfo->at(i).fileName());

    }