qt连mysql插入语句

#include <QCoreApplication>
#include <QSqlDatabase>
#include <QSqlQuery>
#include <QSqlError>
#include <QDebug>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    // 打开数据库连接
    QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL");
    db.setHostName("localhost");
    db.setDatabaseName("testdb");
    db.setUserName("root");
    db.setPassword("password");

    if (!db.open()) {
        qDebug() << "Error: connection with database failed";
        return -1;
    } else {
        qDebug() << "Database: connection ok";
    }

    // 执行插入语句
    QSqlQuery query;
    QString insertQuery = "INSERT INTO users (name, email) VALUES (:name, :email)";
    query.prepare(insertQuery);
    query.bindValue(":name", "John Doe");
    query.bindValue(":email", "john.doe@example.com");

    if (!query.exec()) {
        qDebug() << "Insert error:" << query.lastError().text();
    } else {
        qDebug() << "Insert successful";
    }

    return a.exec();
}