没有加载QSQLITE驱动程序 - 在哪里放qt数据库驱动程序插件

Question

我正在使用VS2008和QT插件来制作我的应用程序.在我运行应用程序时创建包后,我收到错误:

QSqlDatabase: QSQLITE driver not loaded
QSqlDatabase: available drivers: 
Database error: QSqlError(-1, "Driver not loaded", "Driver not loaded") 
QSqlError(-1, "Driver not loaded", "Driver not loaded") 

我已将qsqlite.dll添加到我的包中并且还更改了libpath.但我仍然得到这个错误.怎么解决这个问题.

我的代码::

  QStringList str;
str.append(".");
a.setLibraryPaths(str);
a.addLibraryPath("./sqldrivers/");

//a.addLibraryPath(".");

qDebug()<<"my library path : "<<a.libraryPaths();

QLibrary sqlib("qsqlite4.dll");
sqlib.load();
qDebug()<<"my library loaded"<<sqlib.isLoaded();

QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
qDebug()<<"Database error:"<<db.lastError();

db.setDatabaseName("vimukti1234");
qDebug()<< db.lastError();

 db.open();
QSqlQuery query;

Answer 1

驱动程序需要放在"sqldrivers"下,而不是放在与可执行文件相同的目录中(它们在运行时加载,Qt在"sqldrivers"中查找它们).我们安装的应用程序的典型结构如下:

.:
total 26616
-rwxr-xr-x 1 root root 2245632 Sep 29 03:53 AlvaEditor.exe
-rwxr-xr-x 1 root root 2335232 Sep 29 03:53 QtCore4.dll
-rwxr-xr-x 1 root root 8421376 Sep 29 03:53 QtGui4.dll
-rwxr-xr-x 1 root root  199168 Sep 29 03:53 QtSql4.dll
-rwxr-xr-x 1 root root  306688 Sep 29 03:53 libctemplate.dll
-rwxr-xr-x 1 root root   26624 Sep 29 03:53 qgif4.dll
-rwxr-xr-x 1 root root   28672 Sep 29 03:53 qico4.dll
-rwxr-xr-x 1 root root  200704 Sep 29 03:53 qjpeg4.dll
-rwxr-xr-x 1 root root  222720 Sep 29 03:53 qmng4.dll
-rwxr-xr-x 1 root root  439808 Sep 29 03:53 qsqlite4.dll
-rwxr-xr-x 1 root root   21504 Sep 29 03:53 qsvg4.dll
-rwxr-xr-x 1 root root  287232 Sep 29 03:53 qtiff4.dll
drwxr-xr-x 2 root root    4096 Sep 29 03:53 sqldrivers

./sqldrivers:
total 432
-rwxr-xr-x 1 root root 439808 Sep 29 03:53 qsqlite4.dll