博客

发送邮件部分

参考博文

1. 登录/注册一个163邮箱，在设置里面打开SMTP服务，系统会为你生成一个授权码（是一个乱七八糟的字符串），将授权码记下
   
   
2. 打开QT项目中的.pro文件，加入一行

QT+=network

3. 创建一个Smtp类如下：

//smtp.h 头文件
#ifndef SMTP_H
#define SMTP_H
#include<QByteArray>
#include<QString>
#include<QTcpSocket>

class Smtp
{
public:
    Smtp(QByteArray username,QByteArray password);
    void send(QByteArray recvaddr,QString subject,QString content);
    ~Smtp();
private:
    QTcpSocket * clientsocket;
    QByteArray username;//发送方邮箱
    QByteArray password;//授权码
    QByteArray mailfrom = "mail from:<";
    QByteArray rcptto = "rcpt to:<";
    QByteArray prefrom = "from:";
    QByteArray preto = "to:";
    QByteArray presubject ="subject:";
    QByteArray recvaddr;//接收方邮箱
    QString subject;//邮件标题
    QString content; //发送内容
    QByteArray recvdata;//接收到的数据
};

#endif // SMTP_H

//smtp.cpp 
#include "smtp.h"
#include <QDebug>
Smtp::Smtp(QByteArray username,QByteArray password)
{
    if(username.contains("@163"))
       {
           this->username = username;
           this->password = password;
       }
       else
           qDebug()<<"NOT 163";
}

void Smtp::send(QByteArray recvaddr,QString subject,QString content)
{
    this->recvaddr = recvaddr;
    this->subject = subject;
    this->content = content;
    QByteArray usernametmp = this->username;
    QByteArray recvaddrtmp = this->recvaddr;
    clientsocket=new QTcpSocket();
    this->clientsocket->connectToHost("smtp.163.com",25,QTcpSocket::ReadWrite);
    this->clientsocket->waitForConnected(1000);
    this->clientsocket->waitForReadyRead(1000);
    recvdata = clientsocket->readAll();
    qDebug()<<recvdata;
    this->clientsocket->write("HELO smtp.163.com\r\n");
    this->clientsocket->waitForReadyRead(1000);
    recvdata = clientsocket->readAll();
    qDebug()<<recvdata;
    this->clientsocket->write("AUTH LOGIN\r\n");
    this->clientsocket->waitForReadyRead(1000);
    recvdata = clientsocket->readAll();
    qDebug()<<recvdata;
    qDebug()<<"username:"<<username;
    this->clientsocket->write(username.toBase64().append("\r\n"));
    this->clientsocket->waitForReadyRead(1000);
    recvdata = clientsocket->readAll();
    qDebug()<<recvdata;
    qDebug()<<"password:"<<password;
    this->clientsocket->write(password.toBase64().append("\r\n"));
    this->clientsocket->waitForReadyRead(1000);
    recvdata = clientsocket->readAll();
    qDebug()<<recvdata;
    this->clientsocket->write(mailfrom.append(usernametmp.append(">\r\n")));
    this->clientsocket->waitForReadyRead(1000);
    recvdata = clientsocket->readAll();
    qDebug()<<recvdata;
    //发送邮箱
    //qDebug()<<"mail from:"<<mailfrom.append(usernametmp.append(">\r\n"));
    this->clientsocket->write(rcptto.append(recvaddrtmp.append(">\r\n")));
    this->clientsocket->waitForReadyRead(1000);
    recvdata = clientsocket->readAll();
    qDebug()<<recvdata;
    //接收邮箱
    //qDebug()<<"rcp to:"<<rcptto.append(recvaddrtmp.append(">\r\n"));
    //data表示开始传输数据
    this->clientsocket->write("data\r\n");
    this->clientsocket->waitForReadyRead(1000);
    recvdata = clientsocket->readAll();
    qDebug()<<recvdata;
    usernametmp = this->username;
    recvaddrtmp = this->recvaddr;
    this->clientsocket->write(prefrom.append(usernametmp.append("\r\n")));
    this->clientsocket->write(preto.append(recvaddrtmp.append("\r\n")));
    this->clientsocket->write(presubject.append(subject.toLocal8Bit().append("\r\n")));
    this->clientsocket->write("\r\n");
    this->clientsocket->write(content.toLocal8Bit().append("\r\n"));
    this->clientsocket->write(".\r\n");
    this->clientsocket->waitForReadyRead(1000);
    recvdata = clientsocket->readAll();
    qDebug()<<recvdata;
    this->clientsocket->write("quit\r\n");
    this->clientsocket->waitForReadyRead(1000);
    recvdata = clientsocket->readAll();
    qDebug()<<recvdata;
}
Smtp::~Smtp()
{
    delete this->clientsocket;
}

3. 在main函数中测试

int main(int argc, char *argv[])
{
    Smtp s("[发送方邮箱]","[授权码]");
    s.send("[接收方邮箱]","标题：测试smtp","内容：看看成功了没有");
    return 0;
}

4. 如果你还想进一步实现向用户发送验证码的功能的话，先添加一个“发送验证码”按钮的槽函数（右击按钮选择添加槽函数），槽函数内容如下：

//生成验证码
void login::on_verification_clicked()
{
    QString recvaddr0=ui->lineEdit->text();
    QRegExp re("^[A-Za-z0-9]+([_\\.][A-Za-z0-9]+)*@([A-Za-z0-9\\-]+\\.)+[A-Za-z]{2,6}$");
    if(re.exactMatch(recvaddr0)){//验证邮箱格式
        QMessageBox::information(NULL,"提示","验证码将在30s内发送至您的邮箱，请耐心等待。");
        QTime time= QTime::currentTime();
        qsrand(time.msec()+time.second()*1000);
        code = 1000+qrand() % (9999-1000);    //产生1000~9999以内的随机数
        Smtp smtp("xxx","xxx");//按照刚才的方法实例化一个smtp对象
        QByteArray recvaddr=recvaddr0.toUtf8();//QString转QByteArray
        QString subject="xx系统登录/注册验证码";
        QString content="欢迎登录/注册xx系统，本次操作的验证码为："+QString::number(code);
        smtp.send(recvaddr,subject,content);
    }
    else{
        QMessageBox::warning(NULL,"提示","邮箱格式不正确,请重新输入。");
    }

}

效果如下：