#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();
}
参考(但不怎么起作用)
https://bbs.csdn.net/topics/390992221
解决方案:
m_odbc_db.tables(QSql::AllTables)本身就不支持非英文,此处是QT的一个BUG,读出来的就是乱码,根本就没法通过编码转换得出中文。
只需要编译sqldrivers/odbc这一个插件就行了。
用qtcreater打开C:\Qt\Qt5.9.5\5.9.5\Src\qtbase\src\plugins\sqldrivers\sqldrivers.pro,进行编译
注意2376这一行QString fieldVal = qGetStringData(hStmt, 2, -1, false);
改为QString fieldVal = qGetStringData(hStmt, 2, -1, true);就行了
附件有编译好的qsqlodbc.dll,替换掉5.9.5\mingw53_32\plugins\sqldrivers\qsqlodbc.dll即可