modify:

loghandler.cpp

@@ -48,22 +48,26 @@ void messageHandler(QtMsgType type, const QMessageLogContext &context, const QSt
     }
 
     // 输出到日志文件, 格式: 时间 - [Level] (文件名:行数, 函数): 消息
-    QString fileName = context.file ? QString::fromUtf8(context.file) : QStringLiteral("unknown");
+    QString fileName = context.file ? QString::fromUtf8(context.file) : QStringLiteral("?");
     int index = fileName.lastIndexOf(QDir::separator());
     if (index >= 0)
     {
         fileName = fileName.mid(index + 1);
     }
 
-    const QString funcName = context.function ? QString::fromUtf8(context.function) : QStringLiteral("unknown");
+    const QString funcName = context.function ? QString::fromUtf8(context.function) : QStringLiteral("?");
-    QString msgOut = QString("%1-[%2](%3:%4,%5): %6")
+    const QString lineText = QString::number(context.line);
-                     .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss.zzz"),colorLevel, fileName, QString(context.line), funcName, msg);
+    const QString timestamp = QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss.zzz");
+    const QString consoleMsg = QString("%1-[%2](%3:%4,%5): %6")
+                               .arg(timestamp, colorLevel, fileName, lineText, funcName, msg);
+    const QString fileMsg = QString("%1-[%2](%3:%4,%5): %6")
+                            .arg(timestamp, level, fileName, lineText, funcName, msg);
 
-    std::cout << msgOut.toLocal8Bit().constData() << std::endl;
+    std::cout << consoleMsg.toLocal8Bit().constData() << std::endl;
 
     if (g_file.isOpen())
     {
-        g_stream << msgOut << "\n";
+        g_stream << fileMsg << "\n";
         const qint64 now = QDateTime::currentMSecsSinceEpoch();
         if (type >= QtCriticalMsg || now - g_lastFlushMs >= kLogFlushIntervalMs)
         {