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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