Qt MSQL数据库访问测试程序

/**********************数据库准备工件**************************/

/*

 mysql -p -u root

 show databases;

 create database testmysql

 create table login(username varchar(20),idnumber varchar(20));

 insert into login values('huise','123456');

 show table login;

 select * from login;

*/

#include <QtGui>

#include <QtSql>

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

{

    QCoreApplication a(argc, argv);

    QString m_name;

    QString m_password;

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

    db.setHostName("localhost");

    db.setDatabaseName("testmysql");

    db.setUserName("root");

    db.setPassword("72074918");

    if(!db.open())

    {

        qDebug()<<"Failed to mysql";

    }

    QSqlQuery query;

    if(query.exec("select username,idnumber from login"))

    {

        qDebug()<<"failed query.exce";

    }

    while(query.next())

    {

         m_name = query.value(0).toString();

         m_password = query.value(1).toString();

         qDebug()<<m_name;

         qDebug()<<m_password;

    }

    return 0;

}

        注意：编译时不要忘记了在.pro中添加 QT     +=sql