文档介绍：[代码][C/C++/Objective-C]代码QSqlDatabasedb=QSqlDatabase::addDatabase("QMYSQL"/*"QODBC"*/);//("root");//("password");//("localhost");("test");//("CLIENT_SSL=1;CLIENT_IGNORE_SPACE=1");//(3306);//端口if(()){ qDebug()<<"open\n"<<().driverText()<<"\n";}else{ qDebug()<<"openfaile\n";}实例:#include<QtSql>#include<QtGui>//连接函数boolcreateConnection(){ QSqlDatabasedb=QSqlDatabase::addDatabase("QMYSQL"); ("localhost"); ("test"); ("root"); ("123456"); if(!()){ QMessageBox::critical(0,QObject::tr("DatabaseError"), ().text()); returnfalse; } //如果连接成功,执行查询 QSqlQueryquery; ("select*fromstudent"); while(()){ QStringname=(3).toString(); QStringmajor=(1).toString(); QMessageBox::critical(0,name,major); } returntrue;}//主函数intmain(intargc,char**argv){ QApplicationapp(argc,argv); if(!createConnection()){ return1; } ();}实例-,qs