QT怎么将压缩包数据保存到某个文件夹下

在QT（Qt）中，你可以使用QFile、QDir和QArchive等类来处理压缩包（如`.zip`或`.tar.gz`）并将其内容解压到特定目录。以下是一个基本步骤的示例：

#include <QtCore/QCoreApplication>
#include <QFile>
#include <QDir>
#include <QArchive>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    // 压缩包文件路径
    QString archivePath = "path_to_your_archive.zip";

    // 解压的目标文件夹路径
    QDir targetDirectory("path_to_target_directory");

    // 检查目标目录是否存在，如果不存在则创建
    if (!targetDirectory.exists()) {
        targetDirectory.mkpath(".");
    }

    // 使用QZipArchive解压
    QZipArchive zip(archivePath.toLocalFile());
    if (!zip.isReadable()) {
        qCritical() << "Failed to open the archive.";
        return -1;
    }

    for (int i = 0; i < zip.size(); ++i) {
        QByteArray entryName = zip.entryName(i);
        QFile file(targetDirectory.filePath(entryName));
        if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
            qWarning() << "Failed to create file: " << file.errorString();
            continue;
        }
        qint64 bytesWritten = zip.extractTo(file);
        if (bytesWritten != zip.header().uncompressedSize()) {
            qWarning() << "Failed to extract file: " << file.errorString();
        } else {
            qDebug() << "Extracted: " << file.fileName();
        }
        file.close();
    }

    return a.exec();
}