前言

        邮件发送功能是一个非常常规的功能，Qt中貌似没有提供直接发送邮件的库，基于此，本文介绍一个发送邮件的库，用起来还不错。

下载

下载：在Qt中发送邮件的库。-C++文档类资源-CSDN下载发送邮件的库发送邮件的库发送邮件的库发送邮件的库发送邮件的库发送邮件的库发送邮件的库发送邮件的库发送更多下载资源、学习资料请访问CSDN下载频道.https://download.csdn.net/download/qianlixiaomage/86393739

编译

        常规编译，没什么值得注意的。

使用

pro中引入库文件

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/thirdpart/emailtool/mingw/x64/lib/ -lSMTPEmail
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/thirdpart/emailtool/mingw/x64/lib/ -lSMTPEmaild
 
INCLUDEPATH += $$PWD/thirdpart/emailtool/mingw/x64/include
DEPENDPATH += $$PWD/thirdpart/emailtool/mingw/x64/include

代码文件

头文件

#ifndef EMAILVIEW_H
#define EMAILVIEW_H
 
#include 
#include "smtpclient.h"
#include "mimemessage.h"
#include "emailaddress.h"
#include "emailaddress.h"
#include "mimeattachment.h"
#include "mimehtml.h"
 
namespace Ui {
class EmailView;
}
 
class EmailView : public QDialog
{
    Q_OBJECT
 
public:
    explicit EmailView(QWidget *parent = nullptr);
    ~EmailView();
    void initParams(QString emailServer, QString emailPort, bool usessl, QString sender, QString pswd, QString nickName, QMap nickMap);
    void initUI(QString sender, QString nickName, QString recvier, QString cc, QString subject, QString content, bool isTest);
    void initSlots();
    void addWindowBtns();
    void setUIVisible(bool flag);
private slots:
    void onTextEditChanged();
 
    void on_comboBox_currentTextChanged(const QString &arg1);
 
    void on_pushButtonSend_clicked();
 
    void on_pushButtonCancel_clicked();
 
private:
    Ui::EmailView *ui;
    QMap m_nickMap;
    QString m_email_nickName;
 
    bool m_isPart = false;
 
    QString m_emailServer;
    QString m_emailPort;
    bool m_emailUseSSL;
    QString m_emailSender;
    QString m_emailPswd;
};
 
#endif // EMAILVIEW_H

源文件

#include "emailview.h"
#include "ui_emailview.h"
#include 
 
EmailView::EmailView(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::EmailView)
{
    ui->setupUi(this);
    initSlots();
    addWindowBtns();
    ui->pushButtonSend->setIcon(QIcon(":/images/send.png"));
    ui->pushButtonCancel->setIcon(QIcon(":/images/cancel.png"));
}
 
EmailView::~EmailView()
{
    delete ui;
}
 
void EmailView::initParams(QString emailServer, QString emailPort, bool usessl, QString sender, QString pswd, QString nickName, QMap nickMap)
{
    m_emailPort = emailPort;
    m_emailServer = emailServer;
    m_emailSender = sender;
    m_emailUseSSL = usessl;
    m_emailPswd = pswd;
 
    ui->lineEditSender->setText(sender);
 
    ui->lineEditEmailServer->setText(emailServer);
    ui->lineEditEmailPort->setText(emailPort);
    ui->lineEditEmailPswd->setText(pswd);
    ui->lineEditNick->setText(nickName);
    ui->checkBoxUseSSL->setChecked(usessl);
    m_email_nickName = nickName;
 
    m_nickMap = nickMap;
}
 
void EmailView::addWindowBtns()
{
    Qt::WindowFlags windowFlag  = Qt::Dialog;
    windowFlag |= Qt::WindowMinimizeButtonHint;
    windowFlag |= Qt::WindowMaximizeButtonHint;
    windowFlag |= Qt::WindowCloseButtonHint;
    setWindowFlags(windowFlag);
}
 
void EmailView::setUIVisible(bool flag)
{
    ui->labelEmailPort->setVisible(flag);
    ui->labelEmailPswd->setVisible(flag);
    ui->labelEmailServer->setVisible(flag);
    ui->labelNick->setVisible(flag);
    ui->checkBoxUseSSL->setVisible(flag);
 
    ui->lineEditEmailPort->setVisible(flag);
    ui->lineEditEmailServer->setVisible(flag);
    ui->lineEditEmailPswd->setVisible(flag);
    ui->lineEditNick->setVisible(flag);
}
 
 
void EmailView::initUI(QString sender, QString nickName, QString recvier, QString cc, QString subject, QString content, bool isTest)
{
    ui->lineEditSender->setText(sender);
    ui->lineEditRecvier->setText(recvier);
    ui->lineEditCc->setText(cc);
    ui->textEdit->setPlainText(content);
    if(isTest)
    {
        subject += "【测试邮件】";
    }
    ui->lineEditSubject->setText(subject);
    m_email_nickName = nickName;
 
    m_isPart = true;
}
 
void EmailView::initSlots()
{
    connect(ui->textEdit, &QTextEdit::textChanged, this, &EmailView::onTextEditChanged);
}
 
void EmailView::onTextEditChanged()
{
    ui->textEdit->setToolTip(ui->textEdit->toHtml());
}
 
 
void EmailView::on_comboBox_currentTextChanged(const QString &text)
{
    // 根据不同类别设置文本内容及主题
    if(text=="请假模板")
    {
        ui->textEdit->setHtml("xx，您好！
以下是我的请假申请，请批准！

请假缘由：xxxxx
工作交接：暂无工作交接
请假时间：9:00~12:00(共计3小时)
");
        ui->lineEditSubject->setText(QString("开发十三部_XX_请假信息_%1").arg(QDate::currentDate().toString("yyyyMMdd")));
    }
    else if(text=="日常模板")
    {
        ui->textEdit->setHtml("各位领导、同事，大家好！
以下是xxxxxxx，请查收！
");
        ui->lineEditSubject->setText("开发十三部_XXXXXXXXXXXXX");
    }
    else
    {
        ui->textEdit->clear();
        ui->lineEditSubject->clear();
    }
}
 
 
void EmailView::on_pushButtonSend_clicked()
{
    QString server = "";
    QString port = "";
    bool usessl = false;
    QString sender = "";
    QString pswd = "";
 
    if(m_isPart)
    {
        server = m_emailServer;
        port = m_emailPort;
        usessl = m_emailUseSSL;
        sender = m_emailSender;
        pswd = m_emailPswd;
    }
    else
    {
        server = ui->lineEditEmailServer->text();
        port = ui->lineEditEmailPort->text();
        usessl = ui->checkBoxUseSSL->isChecked();
        sender = ui->lineEditSender->text();
        pswd = ui->lineEditEmailPswd->text();
    }
 
    SmtpClient m_smtp(server, port.toInt(), usessl?SmtpClient::SslConnection:SmtpClient::TcpConnection);
    m_smtp.setUser(sender);
    m_smtp.setPassword(pswd);
 
    MimeMessage message;
    if(m_isPart)
    {
        message.setSender(new EmailAddress(ui->lineEditSender->text(), m_email_nickName));
    }
    else
    {
        message.setSender(new EmailAddress(ui->lineEditSender->text(), ui->lineEditNick->text()));
    }
 
 
    //构建邮件标题
    QString subject = ui->lineEditSubject->text();
 
 
    if(!m_smtp.connectToHost())
    {
        QMessageBox::information(this, "warn", "邮件服务连接失败");
        return;
    }
    if(!m_smtp.login())
    {
        QMessageBox::information(this, "warn", "邮件服务登录失败");
        return;
    }
 
 
    if(ui->lineEditRecvier->text().trimmed()!="")
    {
        QStringList recviers = ui->lineEditRecvier->text().split(";");
        for(int i = 0; i< recviers.size(); i++)
        {
            if(m_nickMap.contains(recviers.at(i)))
            {
                message.addRecipient(new EmailAddress(recviers.at(i),m_nickMap.find(recviers.at(i)).value()));
            }
            else
            {
                message.addRecipient(new EmailAddress(recviers.at(i)));
            }
 
        }
    }
 
 
    if(ui->lineEditCc->text().trimmed()!="")
    {
        QStringList ccs = ui->lineEditCc->text().split(";");
        for(int i = 0; i< ccs.size(); i++)
        {
            if(m_nickMap.contains(ccs.at(i)))
            {
                message.addCc(new EmailAddress(ccs.at(i),m_nickMap.find(ccs.at(i)).value()));
            }
            else
            {
                message.addCc(new EmailAddress(ccs.at(i)));
            }
        }
    }
 
 
 
    if(message.getRecipients().size()==0)
    {
        QMessageBox::information(this, "warn", "收件人为空");
        m_smtp.quit();
        return;
    }
 
    message.setSubject(subject);
 
    QString emailHtml = "";
    if(m_isPart)
    {
        emailHtml = ui->textEdit->toPlainText();
    }
    else
    {
        emailHtml = ui->textEdit->toHtml();
    }
 
    //构建邮件正文
    MimeHtml text;
    text.setHtml(emailHtml);
    message.addPart(&text);
 
    if(!m_smtp.sendMail(message))
    {
        m_smtp.quit();
        QMessageBox::information(this, "warn", "邮件发送失败");
    } else{
        m_smtp.quit();
        QMessageBox::information(this, "info", "邮件发送成功");
    }
 
    this->close();
}
 
 
void EmailView::on_pushButtonCancel_clicked()
{
    this->close();
}
 

界面展示

核心

重点类：

SmtpClient

MimeMessage

EmailAddress  p1为邮箱地址 p2为昵称

重点函数：

addCc() 添加抄送人 p1为邮箱地址 p2为昵称

addRecipient() 添加收件人 p1为邮箱地址 p2为昵称

sendMail() 发送邮件

结语

再见！