QT对access数据库进行操作
2016-07-21 23:13
525 查看
使用QT对access数据库进行操作——————数据库中表、记录和域的读取
#include <QtCore/QCoreApplication>#include <QTextStream>
#include <QtDebug>
#include <QSqlDatabase>
#include <QStringList>
#include <QSqlError>
#include <QSqlIndex>
#include <QSqlRecord>
#include <QSqlQuery>
#include <QVariant>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
//连接数据库
QSqlDatabase db = QSqlDatabase::addDatabase("QODBC");
db.setDatabaseName("DRIVER={Microsoft Access Driver (*.mdb)};FIL={MS Access};DBQ=I:/mycode/ConnectAccess/test.mdb");
QString out_str;
QTextStream out(stdout);
QSqlError err;
QSqlRecord record;
bool ok = db.open();
if(ok){//success
//读数据库中的表
QStringList tables;
QString tabName,sqlString;
tables = db.tables(QSql::Tables);
//读表中记录
for (int i = 0; i < tables.size(); ++i){
tabName = tables.at(i);
qDebug()<<tabName;
sqlString = "select * from " + tabName;
QSqlQuery q(sqlString);
//QSqlQuery q("select * from product");
QSqlRecord rec = q.record();
int fieldCount = rec.count();
qDebug() << "Number of columns: " << fieldCount;
int i;
QString fieldName;
for(i=0;i<fieldCount;i++){
fieldName = rec.fieldName(i);
out<<fieldName<<"\t";
}
out<<endl;
while(q.next()){
for(int i=0;i<fieldCount;i++){
out<<q.value(i).toString();
out<<"\t";
}
out<<endl;
}
}
}
else{//fail
out_str="open fail\n";
out << out_str <<endl;
err = db.lastError();
out_str = err.databaseText();
out << out_str <<endl;
out_str = err.driverText();
out << out_str <<endl;
}
return a.exec();
}
转自:http://blog.csdn.net/apn172/article/details/7085212
相关文章推荐
- Qt5位置相关函数
- 使用qt开发ros应用
- 把静态编译的QT添加到QTCreator当中创建新工程
- QT中私有公有化(Q_DECLARE_PUBLIC Q_DECLARE_PRIVATE)原理小DEMO
- Ubuntu14.04下安装和卸载Qt5.5.1
- Qt之QSizePolicy
- Qt之QSizePolicy
- Qt之QSizePolicy
- MinGW静态编译windows QT5.x
- QT实现快捷键的三种方式
- qt 调试
- Qt之坐标系统
- Qt之坐标系统
- Qt之坐标系统
- 树莓派2B、树莓派3的Qt交叉编译环境搭建
- 第6篇 基础(六)实现Qt文本编辑功能
- QT学习之QScript
- Qt5中QPrinter类和QPinterDialog类
- 如何在Qt中写自己的静态连接库
- QT 库