Qt编译mysql驱动

#include <QApplication>

#include <QtSql>

int main(int argc, char *argv[])

{

    QApplication a(argc, argv);

    qDebug()<<"available drivers:";

    QStringList drivers = QSqlDatabase::drivers();

    foreach(QString driver, drivers)

        qDebug()<<driver;

    QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL");

    db.setHostName("localhost");

    db.setPort(3306);

    db.setDatabaseName("hzq");

    db.setUserName("root");

    db.setPassword("123456");

    if(!db.open())

        qDebug()<<"failed to connect to mysql";

    else

        qDebug()<<"success";

    QString select_all_sql = "select * from teacher_class";

    //查询所有数据

    QSqlQuery sql_query;

    sql_query.prepare(select_all_sql);

    if(!sql_query.exec())

    {

        qDebug()<<sql_query.lastError();

    }

    else

    {

        while(sql_query.next())

        {

            int id = sql_query.value(0).toInt();

            QString templ_name = sql_query.value(2).toString();

            qDebug()<<QString("Id:%1     Templ Name:%2").arg(id).arg(templ_name);

        }

    }

    return a.exec();

}