C++实现发送邮件和附件功能
本文实例为大家分享了C++实现发送邮件和附件的具体代码，供大家参考，具体内容如下
头文件
/*************************
*发送邮件模块头文件
*可以发送文本和附件（支持多个附件一起发送）
**************************/
#pragmaonce
structsMailInfo//邮件信息
{
char*m_pcUserName;//用户登录邮箱的名称
char*m_pcUserPassWord;//用户登录邮箱的密码
char*m_pcSenderName;//用户发送时显示的名称
char*m_pcSender;//发送者的邮箱地址
char*m_pcReceiver;//接收者的邮箱地址
char*m_pcTitle;//邮箱标题
char*m_pcBody;//邮件文本正文
char*m_pcIPAddr;//服务器的IP
char*m_pcIPName;//服务器的名称（IP与名称二选一，优先取名称）
sMailInfo(){memset(this,0,sizeof(sMailInfo));}
};
classCSendMail
{
public:
CSendMail(void);
~CSendMail(void);
public:
boolSendMail(sMailInfo&smailInfo);//发送邮件，需要在发送的时候初始化邮件信息
voidAddFilePath(char*pcFilePath);//添加附件的决定路径到附件列表中
voidDeleteFilePath(char*pcFilePath);//删除附件路径，如果有的话
voidDeleteAllPath(void);//删除全部附件的路径
protected:
voidGetFileName(char*fileName,char*filePath);//从附件的路径中获取文件名称
voidChar2Base64(char*pBuff64,char*pSrcBuff,intiLen);//把char类型转换成Base64类型
boolCReateSocket(SOCKET&sock);//建立socket连接
boolLogon(SOCKET&sock);//登录邮箱，主要进行发邮件前的准备工作
intGetFileData(char*FilePath);//由文件路径获取附件内容
boolSendHead(SOCKET&sock);//发送邮件头
boolSendTextBody(SOCKET&sock);//发送邮件文本正文
boolSendFileBody(SOCKET&sock);//发送邮件附件
boolSendEnd(SOCKET&sock);//发送邮件结尾
protected:
CListm_pcFilePathList;//记录附件路径
charm_cSendBuff[4096];//发送缓冲区
charm_cReceiveBuff[1024];
char*m_pcFileBuff;//指向附件内容
sMailInfom_sMailInfo;
};
模块实现文件
/****************************
*发送邮件模块
*可以发送文本和附件（支持多个附件一起发送）
*Date:2011-12-01
******************************/
#include"StdAfx.h"
#include"SendMail.h"
#include"winsock2.h"
#pragmacomment(lib,"WSOCK32")
CSendMail::CSendMail(void)
{
m_pcFileBuff=NULL;
memset(m_cSendBuff,0,sizeof(m_cSendBuff));
memset(m_cReceiveBuff,0,sizeof(m_cReceiveBuff));
}
CSendMail::~CSendMail(void)
{
DeleteAllPath();
}
voidCSendMail::Char2Base64(char*pBuff64,char*pSrcBuff,intiLen)
{
//11111111
//分配给pBuff64↑分配给pBuff64+1
//point所在的位置
staticcharBase64Encode[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";//base64所映射的字符表
intpoint;//每一个源字符拆分的位置，可取2,4,6；初始为2
point=2;
inti;
intiIndex;//base64字符的索引
charn=0;//上一个源字符的残留值
for(i=0;i>point)&0x3f;//取得pSrcBuff的高point位
}
elseif(point==4)
{
iIndex=((*pSrcBuff)>>point)&0xf;//取得pSrcBuff的高point位
}
elseif(point==6)
{
iIndex=((*pSrcBuff)>>point)&0x3;//取得pSrcBuff的高point位
}
iIndex+=n;//与pSrcBuff-1的低point结合组成Base64的索引
*pBuff64++=Base64Encode[iIndex];//由索引表得到pBuff64
n=((*pSrcBuff)<<(6-point));//计算源字符中的残留值
n=n&0x3f;//确保n的最高两位为0
point+=2;//源字符的拆分位置上升2
if(point==8)//如果拆分位置为8说明pSrcBuff有6位残留，可以组成一个完整的Base64字符，所以直接再组合一次
{
iIndex=(*pSrcBuff)&0x3f;//提取低6位，这就是索引了
*pBuff64++=Base64Encode[iIndex];//
n=0;//残留值为0
point=2;//拆分位置设为2
}
pSrcBuff++;
}
if(n!=0)
{
*pBuff64++=Base64Encode[n];
}
if(iLen%3==2)//如果源字符串长度不是3的倍数要用'='补全
{
*pBuff64='=';
}
elseif(iLen%3==1)
{
*pBuff64++='=';
*pBuff64='=';
}
}
voidCSendMail::AddFilePath(char*pcFilePath)//添加附件路径
{
if(pcFilePath==NULL)
{
return;
}
inti;
char*temp;
for(i=0;ih_addr_list);
}
intret=connect(sock,(sockaddr*)&servaddr,sizeof(servaddr));//建立连接
if(ret==SOCKET_ERROR)
{
returnfalse;
}
returntrue;
}
boolCSendMail::Logon(SOCKET&sock)
{
recv(sock,m_cReceiveBuff,1024,0);
memset(m_cSendBuff,0,sizeof(m_cSendBuff));
sprintf_s(m_cSendBuff,"HELO[]\r\n");
send(sock,m_cSendBuff,strlen(m_cSendBuff),0);//开始会话
recv(sock,m_cReceiveBuff,1024,0);
if(m_cReceiveBuff[0]!='2'||m_cReceiveBuff[1]!='5'||m_cReceiveBuff[2]!='0')
{
returnfalse;
}
memset(m_cSendBuff,0,sizeof(m_cSendBuff));
sprintf_s(m_cSendBuff,"AUTHLOGIN\r\n");
send(sock,m_cSendBuff,strlen(m_cSendBuff),0);//请求登录
recv(sock,m_cReceiveBuff,1024,0);
if(m_cReceiveBuff[0]!='3'||m_cReceiveBuff[1]!='3'||m_cReceiveBuff[2]!='4')
{
returnfalse;
}
memset(m_cSendBuff,0,sizeof(m_cSendBuff));
Char2Base64(m_cSendBuff,m_sMailInfo.m_pcUserName,strlen(m_sMailInfo.m_pcUserName));
m_cSendBuff[strlen(m_cSendBuff)]='\r';
m_cSendBuff[strlen(m_cSendBuff)]='\n';
send(sock,m_cSendBuff,strlen(m_cSendBuff),0);//发送用户名
recv(sock,m_cReceiveBuff,1024,0);
if(m_cReceiveBuff[0]!='3'||m_cReceiveBuff[1]!='3'||m_cReceiveBuff[2]!='4')
{
returnfalse;
}
memset(m_cSendBuff,0,sizeof(m_cSendBuff));
Char2Base64(m_cSendBuff,m_sMailInfo.m_pcUserPassWord,strlen(m_sMailInfo.m_pcUserPassWord));
m_cSendBuff[strlen(m_cSendBuff)]='\r';
m_cSendBuff[strlen(m_cSendBuff)]='\n';
send(sock,m_cSendBuff,strlen(m_cSendBuff),0);//发送用户密码
recv(sock,m_cReceiveBuff,1024,0);
if(m_cReceiveBuff[0]!='2'||m_cReceiveBuff[1]!='3'||m_cReceiveBuff[2]!='5')
{
returnfalse;
}
returntrue;//登录成功
}
boolCSendMail::SendHead(SOCKET&sock)
{
intrt;
memset(m_cSendBuff,0,sizeof(m_cSendBuff));
sprintf_s(m_cSendBuff,"MAILFROM:<%s>\r\n",m_sMailInfo.m_pcSender);
rt=send(sock,m_cSendBuff,strlen(m_cSendBuff),0);
if(rt!=strlen(m_cSendBuff))
{
returnfalse;
}
recv(sock,m_cReceiveBuff,1024,0);
memset(m_cSendBuff,0,sizeof(m_cSendBuff));
sprintf_s(m_cSendBuff,"RCPTTO:<%s>\r\n",m_sMailInfo.m_pcReceiver);
rt=send(sock,m_cSendBuff,strlen(m_cSendBuff),0);
if(rt!=strlen(m_cSendBuff))
{
returnfalse;
}
recv(sock,m_cReceiveBuff,1024,0);
memset(m_cSendBuff,0,sizeof(m_cSendBuff));
memcpy(m_cSendBuff,"DATA\r\n",strlen("DATA\r\n"));
rt=send(sock,m_cSendBuff,strlen(m_cSendBuff),0);
if(rt!=strlen(m_cSendBuff))
{
returnfalse;
}
recv(sock,m_cReceiveBuff,1024,0);
memset(m_cSendBuff,0,sizeof(m_cSendBuff));
sprintf_s(m_cSendBuff,"From:\"%s\"<%s>\r\n",m_sMailInfo.m_pcSenderName,m_sMailInfo.m_pcSender);
sprintf_s(&m_cSendBuff[strlen(m_cSendBuff)],150,"To:\"INVT.COM.CN\"<%s>\r\n",m_sMailInfo.m_pcReceiver);
sprintf_s(&m_cSendBuff[strlen(m_cSendBuff)],150,"Subject:%s\r\nMime-Version:1.0\r\nContent-Type:multipart/mixed;boundary=\"INVT\"\r\n\r\n",m_sMailInfo.m_pcTitle);
rt=send(sock,m_cSendBuff,strlen(m_cSendBuff),0);
if(rt!=strlen(m_cSendBuff))
{
returnfalse;
}
returntrue;
}
boolCSendMail::SendTextBody(SOCKET&sock)
{
intrt;
memset(m_cSendBuff,0,sizeof(m_cSendBuff));
sprintf_s(m_cSendBuff,"--INVT\r\nContent-Type:text/plain;\r\ncharset=\"gb2312\"\r\n\r\n%s\r\n\r\n",m_sMailInfo.m_pcBody);
rt=send(sock,m_cSendBuff,strlen(m_cSendBuff),0);
if(rt!=strlen(m_cSendBuff))
{
returnfalse;
}
else
{
returntrue;
}
}
boolCSendMail::SendFileBody(SOCKET&sock)
{
inti;
char*filePath;
intrt;
intlen;
intpt=0;
charfileName[128];
for(i=0;i
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