Qt Md5应用示例

【1】.cpp文件

 1 #include "widget.h"
 2 #include "ui_widget.h"
 3 #include <QCryptographicHash>
 4 
 5 Widget::Widget(QWidget *parent) :
 6     QWidget(parent),
 7     ui(new Ui::Widget)
 8 {
 9     ui->setupUi(this);
10     connect(ui->lineEdit, &QLineEdit::textChanged, this, &Widget::onGetMd5);
11 
12     setWindowTitle("Md5");
13     setFixedSize(350, 80);
14 }
15 
16 Widget::~Widget()
17 {
18     delete ui;
19 }
20 
21 void Widget::onGetMd5()
22 {
23     QString strText = ui->lineEdit->text();
24     if (strText.isEmpty())
25     {
26         ui->label->clear();
27         return;
28     }
29 
30     QByteArray byteText = strText.toUtf8(); //原方式:toLatin1();为了支持中文:toUtf8()
31     QString strPwdMd5 = QCryptographicHash::hash(byteText, QCryptographicHash::Md5).toHex();
32     ui->label->setText(strPwdMd5);
33 }

【2】.h文件

 1 #ifndef WIDGET_H
 2 #define WIDGET_H
 3 
 4 #include <QWidget>
 5 
 6 namespace Ui {
 7 class Widget;
 8 }
 9 
10 class Widget : public QWidget
11 {
12     Q_OBJECT
13 
14 public:
15     explicit Widget(QWidget *parent = 0);
16     ~Widget();
17 
18 private slots:
19     void onGetMd5();
20 
21 private:
22     Ui::Widget *ui;
23 };
24 
25 #endif // WIDGET_H

【3】效果图

如上所述,不做赘述。

 

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posted @ 2018-08-07 14:21  kaizenly  阅读(2448)  评论(0编辑  收藏  举报
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