创建文件 //create_file(QString str)
str 写到文件里面
void MainWindow::create_file(QString str)
{
QString AppPath = QApplication::applicationFilePath();
qDebug() << "AppPath:" << AppPath;
QString openssl_path_dir = AppPath;
openssl_path_dir = openssl_path_dir.replace(QString("cmd_openssl.exe"), QString("openssl/bin/"));
qDebug() << "openssl_path_dir:" << openssl_path_dir;
QString fileName=openssl_path_dir + "psw_tmp.txt";
qDebug() << "fileName:" << fileName;
glb_psw_tmp_file_path = fileName;
QFile f(fileName);
if(!f.open(QIODevice::WriteOnly | QIODevice::Text))
{
qDebug() << "Open failed.";
QMessageBox::warning(this,"file error","can't open",QMessageBox::Yes);
}
QTextStream in(&f);
in << str;//没有回车
in << str << endl;//有回车
f.close();
}
/*
AppPath: "E:/Qt/leo_qt/build-cmd_openssl-Desktop_Qt_5_8_0_MinGW_32bit-Release/release/cmd_openssl.exe"
openssl_path_dir: "E:/Qt/leo_qt/build-cmd_openssl-Desktop_Qt_5_8_0_MinGW_32bit-Release/release/openssl/bin/"
fileName: "E:/Qt/leo_qt/build-cmd_openssl-Desktop_Qt_5_8_0_MinGW_32bit-Release/release/openssl/bin/psw_tmp.txt"
*/
读文件 read_file(QString file_path)
QString MainWindow::read_file(QString file_path)
{
QFile f(file_path);
if(!f.open(QIODevice::ReadOnly | QIODevice::Text))
{
qDebug() << "Open failed.";
QMessageBox::warning(this,"sdf","can't open",QMessageBox::Yes);
}
QTextStream txtOutput(&f);
QString lineStr;
QString all_line_str;
while(!txtOutput.atEnd())
{
lineStr = txtOutput.readLine();
all_line_str += lineStr;
// cout << lineStr << endl;
qDebug() << "lineStr:" << lineStr;
}
qDebug() << "all_lineStr:" << all_line_str;
qDebug() << file_path;
f.close();
// f.remove(file_path);
return all_line_str;
}
//删除临时文件
QString fileName=glb_psw_tmp_file_path;
QFile file;
file.remove(fileName);