MODIFY：日志数据每次打开软件新增一个

loghandler.cpp

@@ -67,7 +67,18 @@ void LogHandler::installMessageHandler()
     QDir _logDir(_logDirPath);
     if(!_logDir.exists())
         _logDir.mkpath(_logDirPath);
-    auto _logPath = _logDirPath + _currentDate + ".log";
+
+    QString _logPath;
+    for(int i = 1; i < 1000; ++i)
+    {
+        _logPath = _logDirPath + _currentDate + QString("_%1.log").arg(i);
+        QFileInfo _fileInfo(_logPath);
+        if(!_fileInfo.exists())
+        {
+            break;
+        }
+    }
+
     g_file.setFileName(_logPath);
     if(!g_file.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Append))
     {