#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QDebug>
#include <QDialog>
#include <QPalette>
#include <QButtonGroup>
#include <QMessageBox>
#include <QSqlTableModel>
#include <QSqlRecord>
#include <QTime>
#include <QMessageBox>
#include <QButtonGroup>
#include <QSqlQuery>
#include <string>
using namespace std;
#include <iostream>
#include <fstream>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL");
db.setHostName("localhost");
db.setDatabaseName("test");
db.setUserName("root");
db.setPassword("123456");
db.open();
model=new QSqlTableModel(this);
model->setEditStrategy(QSqlTableModel::OnManualSubmit);
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::on_pushButton_clicked()
{
QSqlQuery query;
query.exec("SELECT * FROM students ORDER BY id ASC");
model->setTable("students");
model->select();
while (query.next())
{
//依次獲取表中第五列數據
int rowNum = model->rowCount(); // 獲得表的行數
qDebug()<<"rowNum"<<rowNum<<endl;
QString txtph = query.value(4).toString();//query.value()的參數只能是index(第五列的數據)
qDebug()<<"txtph"<<txtph<<endl;
QByteArray aByteArray = txtph.toLatin1();//先把轉化爲QByteArray的結果存儲起來
const char* txtph2 = aByteArray.data();//再調用data()或constData()
//獲取每個txt文本路徑,並全部複製到2.txt中(txt文本的複製操作)
ifstream myfile(txtph2);
ofstream outfile("D:\\VS\\born\\2.txt", ofstream::app);
string temp;
if (!myfile.is_open()) {
cout << "未成功打開文件" << endl;
}
// while (getline(myfile, temp,'\n')) {
while (getline(myfile, temp)) {
outfile << temp ;
// outfile << temp ;
}
outfile<<endl;
myfile.close();
// if(pFileIn[0]==NULL || pFileIn[1]==NULL || pFileOut==NULL) return 1;
// for(int i=0;i<2;i++)
// {
// while(!feof(pFileIn[i]))
// {
// ch=fgetc(pFileIn[i]);
// fputc(ch,pFileOut);
// }
// fclose(pFileIn[i]);
// }
}
}