使用QT5对access数据库进行操作,读取Access数据库表名中文乱码问题

#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

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转载自blog.csdn.net/taiyang1987912/article/details/80422913