Qt Md5应用示例

【1】.cpp文件

 #include "widget.h"
 #include "ui_widget.h"
 #include <QCryptographicHash>

 Widget::Widget(QWidget *parent) :
     QWidget(parent),
     ui(new Ui::Widget)
 {
     ui->setupUi(this);
     connect(ui->lineEdit, &QLineEdit::textChanged, this, &Widget::onGetMd5);

     setWindowTitle("Md5");
     setFixedSize(, );
 }

 Widget::~Widget()
 {
     delete ui;
 }

 void Widget::onGetMd5()
 {
     QString strText = ui->lineEdit->text();
     if (strText.isEmpty())
     {
         ui->label->clear();
         return;
     }

     QByteArray byteText = strText.toUtf8(); //原方式：toLatin1();为了支持中文：toUtf8()
     QString strPwdMd5 = QCryptographicHash::hash(byteText, QCryptographicHash::Md5).toHex();
     ui->label->setText(strPwdMd5);
 }

【2】.h文件

 #ifndef WIDGET_H
 #define WIDGET_H

 #include <QWidget>

 namespace Ui {
 class Widget;
 }

 class Widget : public QWidget
 {
     Q_OBJECT

 public:
     explicit Widget(QWidget *parent = );
     ~Widget();

 private slots:
     void onGetMd5();

 private:
     Ui::Widget *ui;
 };

 #endif // WIDGET_H

【3】效果图

如上所述，不做赘述。

Good Good Study, Day Day Up.

顺序 选择  循环 总结