Qt文件信息获取之QFileInfo

 1 void MainWindow::on_browserBtn_clicked()
 2 {
 3     QString fileName = QFileDialog::getOpenFileName(this,
 4                                                     tr("打开文件"),
 5                                                     ".",
 6                                                     tr("All Files(*.*)"));
 7     if (!fileName.isEmpty())
 8     {
 9         ui->pathEdit->setText(fileName);
10         QString infoList;
11 
12         QFile file(fileName);
13         if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
14         {
15             infoList += tr("Can not open file: %1 \n").arg(fileName);
16         }
17         else
18         {
19             infoList += tr("Open file: %1 Successfully\n").arg(fileName);
20             QTextStream in(&file);
21             while (!in.atEnd()) {
22                 QString line = in.readLine();
23                 infoList += line;
24             }
25             infoList += "\n";
26             file.close();
27         }
28 
29         QFileInfo info(fileName);
30         if (info.exists())
31         {
32 
33             infoList += tr("文件名称: %1 \n").arg(info.fileName());
34             infoList += tr("文件大小: %1 Bytes\n").arg(info.size());
35             infoList += tr("创建时间: %1 \n").arg(info.created().toString("yyyy-MM-dd hh:mm:ss"));
36             infoList += tr("修改时间: %1 \n").arg(info.lastModified().toString("yyyy-MM-dd hh:mm:ss"));
37             infoList += tr("读取时间: %1 \n").arg(info.lastRead().toString("yyyy-MM-dd hh:mm:ss"));
38 
39             ui->infoLabel->setText(infoList);
40         }
41     }
42 }