Qt开发之获取文件元数据的信息

效果展示：

源码如下：

头文件(.h)

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#ifndef MAINWINDOW_H #define MAINWINDOW_H   #include <QWidget> #include <QLabel> #include <QLineEdit> #include <QPushButton> #include <QCheckBox> #include <QHBoxLayout> #include <QVBoxLayout> #include <QGridLayout> #include <QFileDialog> #include <QDateTime>   class MainWindow : public QWidget {     Q_OBJECT   public:     MainWindow(QWidget *parent = nullptr);     ~MainWindow();   private slots:     void onGetFile(); //打开文件   private:     QLabel *m_pFileNameLabel;     QLabel *m_pFileSizeLabel;     QLabel *m_pFileCreateTimeLabel;     QLabel *m_pFileLastModifiedTimeLabel;     QLabel *m_pFileLastReadTimeLabel;       QLineEdit *m_pFileNameEdit;     QLineEdit *m_pFileSizeEdit;     QLineEdit *m_pFileCreateTimeEdit;     QLineEdit *m_pFileLastModifiedTimeEdit;     QLineEdit *m_pFileLastReadTimeEdit;       QPushButton *m_pFileButton;       QLabel *m_pFilePropertyLabel;     QCheckBox *m_pDirCheckBox;     QCheckBox *m_pFileCheckBox;     QCheckBox *m_pSymLinkCheckBox;     QCheckBox *m_pHiddenCheckBox;     QCheckBox *m_pReadableCheckBox;     QCheckBox *m_pWriteableCheckBox;     QCheckBox *m_pExecuteAbleCheckBox; }; #endif // MAINWINDOW_H

源文件(.cpp)　

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#include "main_window.h"   MainWindow::MainWindow(QWidget *parent)     : QWidget(parent) {     this->setWindowTitle("获取文件元数据的信息");       m_pFileNameLabel = new QLabel("文件名称：", this);     m_pFileNameEdit = new QLineEdit(this);       m_pFileButton = new QPushButton("选择文件...", this);     connect(m_pFileButton, &QPushButton::clicked, this, &MainWindow::onGetFile);       m_pFileSizeLabel = new QLabel("文件大小：", this);     m_pFileSizeEdit = new QLineEdit(this);       m_pFileCreateTimeLabel = new QLabel("创建时间：", this);     m_pFileCreateTimeEdit = new QLineEdit(this);       m_pFileLastModifiedTimeLabel = new QLabel("最后修改时间：", this);     m_pFileLastModifiedTimeEdit = new QLineEdit(this);       m_pFileLastReadTimeLabel = new QLabel("最后访问时间：", this);     m_pFileLastReadTimeEdit = new QLineEdit(this);       m_pFilePropertyLabel = new QLabel("属性：", this);       m_pDirCheckBox = new QCheckBox("目录", this);     m_pFileCheckBox = new QCheckBox("文件", this);     m_pSymLinkCheckBox = new QCheckBox("符号链接", this);     m_pHiddenCheckBox = new QCheckBox("隐藏", this);     m_pReadableCheckBox = new QCheckBox("读", this);     m_pWriteableCheckBox = new QCheckBox("写", this);     m_pExecuteAbleCheckBox = new QCheckBox("执行", this);       QGridLayout *pGlayout = new QGridLayout(this);     pGlayout->addWidget(m_pFileNameLabel, 0, 0);     pGlayout->addWidget(m_pFileNameEdit, 0, 1);     pGlayout->addWidget(m_pFileButton, 0 ,2);     pGlayout->addWidget(m_pFileSizeLabel, 1,0);     pGlayout->addWidget(m_pFileSizeEdit, 1, 1, 1, 2);     pGlayout->addWidget(m_pFileCreateTimeLabel, 2, 0);     pGlayout->addWidget(m_pFileCreateTimeEdit, 2, 1, 1, 2);     pGlayout->addWidget(m_pFileLastModifiedTimeLabel, 3, 0);     pGlayout->addWidget(m_pFileLastModifiedTimeEdit, 3, 1, 1, 2);     pGlayout->addWidget(m_pFileLastReadTimeLabel, 4, 0);     pGlayout->addWidget(m_pFileLastReadTimeEdit, 4, 1, 1, 2);     pGlayout->addWidget(m_pFilePropertyLabel, 5, 0, 1, 3);       QHBoxLayout *pHlayout = new QHBoxLayout(this);     pHlayout->addWidget(m_pDirCheckBox);     pHlayout->addWidget(m_pFileCheckBox);     pHlayout->addWidget(m_pSymLinkCheckBox);     pHlayout->addWidget(m_pHiddenCheckBox);     pHlayout->addWidget(m_pReadableCheckBox);     pHlayout->addWidget(m_pWriteableCheckBox);     pHlayout->addWidget(m_pExecuteAbleCheckBox);       pGlayout->addLayout(pHlayout, 6, 0, 1, 3); }   MainWindow::~MainWindow() { }   void MainWindow::onGetFile() {     QString strFileName = QFileDialog::getOpenFileName(this, "选择文件", QDir::homePath(), "files(*)");     m_pFileNameEdit->setText(strFileName);       QFileInfo fileInfo(strFileName);       //文件大小     qint64 fileSize = fileInfo.size();     m_pFileSizeEdit->setText(QString::number(fileSize));       //文件创建时间     QDateTime createdTime = fileInfo.birthTime();     m_pFileCreateTimeEdit->setText(createdTime.toString("yyyy-MM-dd hh:mm:ss"));       //文件最后修改时间     QDateTime lastModifiedTime = fileInfo.lastModified();     m_pFileLastModifiedTimeEdit->setText(lastModifiedTime.toString("yyyy-MM-dd hh:mm:ss"));       //文件最后访问时间     QDateTime lastAccessedTime = fileInfo.lastRead();     m_pFileLastReadTimeEdit->setText(lastAccessedTime.toString("yyyy-MM-dd hh:mm:ss"));         if (fileInfo.isDir()) {         m_pDirCheckBox->setChecked(true);     }       if (fileInfo.isFile()) {         m_pFileCheckBox->setChecked(true);     }       if (fileInfo.isSymLink()) {         m_pSymLinkCheckBox->setChecked(true);     }       if (fileInfo.isHidden()) {         m_pHiddenCheckBox->setChecked(true);     }       QFile file(strFileName);     if (file.exists()) {         if (file.permissions() & QFile::ReadUser) {             m_pReadableCheckBox->setChecked(true);         }           if (file.permissions() & QFile::WriteUser) {            m_pWriteableCheckBox->setChecked(true);         }           if (file.permissions() & QFile::ExeUser) {             m_pExecuteAbleCheckBox->setChecked(true);         }     } }