本文主要是介绍邮件正文及其附件的发送的C++实现,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
转载一篇邮件发送的实现,转载自http://blog.csdn.net/lishuhuakai/article/details/27852009
亲自测试,可以使用,稍加修改添加群发功能,直接上代码
stmp.h
#ifndef __SMTP_H__ //避免重复包含
#define __SMTP_H__ #include <iostream>
#include <list>
#include <vector>
#include <WinSock2.h>
using namespace std; const int MAXLEN = 1024;
const int MAX_FILE_LEN = 6000; static const char base64Char[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; struct FILEINFO /*用来记录文件的一些信息*/
{ char fileName[128]; /*文件名称*/ char filePath[256]; /*文件绝对路径*/
}; class CSmtp
{
public: CSmtp(void); CSmtp( int port, string srvDomain, //smtp服务器域名 string userName, //用户名 string password, //密码 string targetEmail, //目的邮件地址 string emailTitle, //主题 string content //内容 ); ~CSmtp(void); private: int port; //邮件发送服务器端口string domain; //邮件发送服务器地址string user; //发送邮箱emailstring pass; //发送邮箱密码string targetAddr; //接收邮箱string title; //邮件标题string content; //邮件正文 /*为了方便添加文件,删除文件神马的,使用list容器最为方便,相信大家在数据结构里面都学过*/ list <FILEINFO *> listFile; char buff[MAXLEN + 1]; int buffLen; SOCKET sockClient; //客户端的套接字 vector <string> m_vectorTargetEamil;//接收邮箱列表private: bool CreateConn(); /*创建连接*/ bool Send(string &message); bool Recv(); void FormatEmailHead(string &email);//格式化要发送的邮件头部 int Login(); bool SendEmailHead(); //发送邮件头部信息 bool SendTextBody(); //发送文本信息 //bool SendAttachment(); //发送附件 int SendAttachment_Ex(); bool SendEnd(); public: void AddAttachment(string &filePath); //添加附件 void DeleteAttachment(string &filePath); //删除附件 void DeleteAllAttachment(); //删除所有的附件 void SetSrvDomain(string &domain); void SetUserName(string &user); void SetPass(string &pass); void SetTargetEmail(string &targetAddr); void SetEmailTitle(string &title); void SetContent(string &content); void SetPort(int port); int SendEmail_Ex(); /*关于错误码的说明:1.网络错误导致的错误2.用户名错误3.密码错误4.文件不存在0.成功*/ char* base64Encode(char const* origSigned, unsigned origLength); void AddTargetEmail(string &strTargetEmail);//添加目地邮箱地址int SendVecotrEmail();//发送多封邮件到多个地址
}; #endif // !__SMTP_H__
#include "stdafx.h"
#include "Smtp.h"
#include <iostream>
#include <fstream>
using namespace std; #pragma comment(lib, "ws2_32.lib") /*链接ws2_32.lib动态链接库*/ /*base64采用别人的编码,不过,这不是重点,重点是我完成了我的一个比较好的邮件发送客户端*/
char* CSmtp::base64Encode(char const* origSigned, unsigned origLength)
{ unsigned char const* orig = (unsigned char const*)origSigned; // in case any input bytes have the MSB set if (orig == NULL) return NULL; unsigned const numOrig24BitValues = origLength / 3; bool havePadding = origLength > numOrig24BitValues * 3; bool havePadding2 = origLength == numOrig24BitValues * 3 + 2; unsigned const numResultBytes = 4 * (numOrig24BitValues + havePadding); char* result = new char[numResultBytes + 3]; // allow for trailing '/0' // Map each full group of 3 input bytes into 4 output base-64 characters: unsigned i; for (i = 0; i < numOrig24BitValues; ++i) { result[4 * i + 0] = base64Char[(orig[3 * i] >> 2) & 0x3F]; result[4 * i + 1] = base64Char[(((orig[3 * i] & 0x3) << 4) | (orig[3 * i + 1] >> 4)) & 0x3F]; result[4 * i + 2] = base64Char[((orig[3 * i + 1] << 2) | (orig[3 * i + 2] >> 6)) & 0x3F]; result[4 * i + 3] = base64Char[orig[3 * i + 2] & 0x3F]; } // Now, take padding into account. (Note: i == numOrig24BitValues) if (havePadding) { result[4 * i + 0] = base64Char[(orig[3 * i] >> 2) & 0x3F]; if (havePadding2) { result[4 * i + 1] = base64Char[(((orig[3 * i] & 0x3) << 4) | (orig[3 * i + 1] >> 4)) & 0x3F]; result[4 * i + 2] = base64Char[(orig[3 * i + 1] << 2) & 0x3F]; } else { result[4 * i + 1] = base64Char[((orig[3 * i] & 0x3) << 4) & 0x3F]; result[4 * i + 2] = '='; } result[4 * i + 3] = '='; } result[numResultBytes] = '\0'; return result;
}
CSmtp::CSmtp(void)
{ this->content = ""; this->port = 25; this->user = ""; this->pass = ""; this->targetAddr = ""; this->title = ""; this->domain = ""; WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(2, 1); err = WSAStartup(wVersionRequested, &wsaData); this->sockClient = 0; } CSmtp::~CSmtp(void)
{ DeleteAllAttachment(); closesocket(sockClient); WSACleanup();
} CSmtp::CSmtp( int port, string srvDomain, string userName, string password, string targetEmail, string emailTitle, string content )
{ this->content = content; this->port = port; this->user = userName; this->pass = password; this->targetAddr = targetEmail; this->title = emailTitle; this->domain = srvDomain; WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(2, 1); err = WSAStartup(wVersionRequested, &wsaData); this->sockClient = 0;
</pre><pre name="code" class="cpp"><span style="white-space:pre"> </span>m_vectorTargetEamil.push_back(targetEmail);
} bool CSmtp::CreateConn()
{ //为建立socket对象做准备,初始化环境 SOCKET sockClient = socket(AF_INET, SOCK_STREAM, 0); //建立socket对象 SOCKADDR_IN addrSrv; HOSTENT* pHostent; pHostent = gethostbyname(domain.c_str()); //得到有关于域名的信息 addrSrv.sin_addr.S_un.S_addr = *((DWORD *)pHostent->h_addr_list[0]); //得到smtp服务器的网络字节序的ip地址 addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(port); int err = connect(sockClient, (SOCKADDR*)&addrSrv, sizeof(SOCKADDR)); //向服务器发送请求 if (err != 0) { return false; //printf("链接失败\n"); } this->sockClient = sockClient; if (false == Recv()) { return false; } return true;
} bool CSmtp::Send(string &message)
{ int err = send(sockClient, message.c_str(), message.length(), 0); if (err == SOCKET_ERROR) { return false; } string message01; cout << message.c_str() << endl; return true;
} bool CSmtp::Recv()
{ memset(buff, 0, sizeof(char)* (MAXLEN + 1)); int err = recv(sockClient, buff, MAXLEN, 0); //接收数据 if (err == SOCKET_ERROR) { return false; } buff[err] = '\0'; cout << buff << endl; return true;
} int CSmtp::Login()
{ string sendBuff; sendBuff = "EHLO "; sendBuff += user; sendBuff += "\r\n"; if (false == Send(sendBuff) || false == Recv()) //既接收也发送 { return 1; /*1表示发送失败由于网络错误*/ } sendBuff.empty(); sendBuff = "AUTH LOGIN\r\n"; if (false == Send(sendBuff) || false == Recv()) //请求登陆 { return 1; /*1表示发送失败由于网络错误*/ } sendBuff.empty(); int pos = user.find('@', 0); sendBuff = user.substr(0, pos); //得到用户名 char *ecode; /*在这里顺带扯一句,关于string类的length函数与C语言中的strlen函数的区别,strlen计算出来的长度,只到'\0'字符为止,而string::length()函数实际上返回的是string类中字符数组的大小,你自己可以测试一下,这也是为什么我下面不使用string::length()的原因*/ ecode = base64Encode(sendBuff.c_str(), strlen(sendBuff.c_str())); sendBuff.empty(); sendBuff = ecode; sendBuff += "\r\n"; delete[]ecode; if (false == Send(sendBuff) || false == Recv()) //发送用户名,并接收服务器的返回 { return 1; /*错误码1表示发送失败由于网络错误*/ } sendBuff.empty(); ecode = base64Encode(pass.c_str(), strlen(pass.c_str())); sendBuff = ecode; sendBuff += "\r\n"; delete[]ecode; if (false == Send(sendBuff) || false == Recv()) //发送用户密码,并接收服务器的返回 { return 1; /*错误码1表示发送失败由于网络错误*/ } if (NULL != strstr(buff, "550")) { return 2;/*错误码2表示用户名错误*/ } if (NULL != strstr(buff, "535")) /*535是认证失败的返回*/ { return 3; /*错误码3表示密码错误*/ } return 0;
} bool CSmtp::SendEmailHead() //发送邮件头部信息
{ string sendBuff; sendBuff = "MAIL FROM: <";sendBuff += user;sendBuff += ">\r\n"; if (false == Send(sendBuff) || false == Recv()) { return false; /*表示发送失败由于网络错误*/ } sendBuff.empty(); sendBuff = "RCPT TO: <";sendBuff += targetAddr;sendBuff += ">\r\n"; if (false == Send(sendBuff) || false == Recv()) { return false; /*表示发送失败由于网络错误*/ } sendBuff.empty(); sendBuff = "DATA\r\n"; if (false == Send(sendBuff) || false == Recv()) { return false; //表示发送失败由于网络错误 } sendBuff.empty(); FormatEmailHead(sendBuff); if (false == Send(sendBuff)) //发送完头部之后不必调用接收函数,因为你没有\r\n.\r\n结尾,服务器认为你没有发完数据,所以不会返回什么值 { return false; /*表示发送失败由于网络错误*/ } return true;
} void CSmtp::FormatEmailHead(string &email)
{/*格式化要发送的内容*/ email = "From: "; email += user; email += "\r\n"; email += "To: "; email += targetAddr; email += "\r\n"; email += "Subject: "; email += title; email += "\r\n"; email += "MIME-Version: 1.0"; email += "\r\n"; email += "Content-Type: multipart/mixed;boundary=qwertyuiop"; email += "\r\n"; email += "\r\n";
} bool CSmtp::SendTextBody() /*发送邮件文本*/
{ string sendBuff; sendBuff = "--qwertyuiop\r\n"; sendBuff += "Content-Type: text/plain;"; sendBuff += "charset=\"gb2312\"\r\n\r\n"; sendBuff += content; sendBuff += "\r\n\r\n"; return Send(sendBuff);
} int CSmtp::SendAttachment_Ex() /*发送附件*/
{ for (list<FILEINFO *>::iterator pIter = listFile.begin(); pIter != listFile.end(); pIter++) { cout << "Attachment is sending ~~~~~" << endl; cout << "Please be patient!" << endl; string sendBuff; sendBuff = "--qwertyuiop\r\n"; sendBuff += "Content-Type: application/octet-stream;\r\n"; sendBuff += " name=\""; sendBuff += (*pIter)->fileName; sendBuff += "\""; sendBuff += "\r\n"; sendBuff += "Content-Transfer-Encoding: base64\r\n"; sendBuff += "Content-Disposition: attachment;\r\n"; sendBuff += " filename=\""; sendBuff += (*pIter)->fileName; sendBuff += "\""; sendBuff += "\r\n"; sendBuff += "\r\n"; Send(sendBuff); ifstream ifs((*pIter)->filePath, ios::in | ios::binary); if (false == ifs.is_open()) { return 4; /*错误码4表示文件打开错误*/ } char fileBuff[MAX_FILE_LEN]; char *chSendBuff; memset(fileBuff, 0, sizeof(fileBuff)); /*文件使用base64加密传送*/ while (ifs.read(fileBuff, MAX_FILE_LEN)) { //cout << ifs.gcount() << endl; chSendBuff = base64Encode(fileBuff, MAX_FILE_LEN); chSendBuff[strlen(chSendBuff)] = '\r'; chSendBuff[strlen(chSendBuff)] = '\n'; send(sockClient, chSendBuff, strlen(chSendBuff), 0); delete[]chSendBuff; } //cout << ifs.gcount() << endl; chSendBuff = base64Encode(fileBuff, ifs.gcount()); chSendBuff[strlen(chSendBuff)] = '\r'; chSendBuff[strlen(chSendBuff)] = '\n'; int err = send(sockClient, chSendBuff, strlen(chSendBuff), 0); if (err != strlen(chSendBuff)) { cout << "文件传送出错!" << endl; return 1; } delete[]chSendBuff; } return 0;
} bool CSmtp::SendEnd() /*发送结尾信息*/
{ string sendBuff; sendBuff = "--qwertyuiop--"; sendBuff += "\r\n.\r\n"; if (false == Send(sendBuff) || false == Recv()) { return false; } cout << buff << endl; sendBuff.empty(); sendBuff = "QUIT\r\n"; return (Send(sendBuff) && Recv());
} int CSmtp::SendEmail_Ex()
{ if (false == CreateConn()) { return 1; } //Recv(); int err = Login(); //先登录 if (err != 0) { return err; //错误代码必须要返回 } if (false == SendEmailHead()) //发送EMAIL头部信息 { return 1; /*错误码1是由于网络的错误*/ } if (false == SendTextBody()) { return 1; /*错误码1是由于网络的错误*/ } err = SendAttachment_Ex(); if (err != 0) { return err; } if (false == SendEnd()) { return 1; /*错误码1是由于网络的错误*/ } return 0; /*0表示没有出错*/
} void CSmtp::AddAttachment(string &filePath) //添加附件
{ FILEINFO *pFile = new FILEINFO; strcpy_s(pFile->filePath, filePath.c_str()); const char *p = filePath.c_str(); strcpy_s(pFile->fileName, p + filePath.find_last_of("\\") + 1); listFile.push_back(pFile);
} void CSmtp::DeleteAttachment(string &filePath) //删除附件
{ list<FILEINFO *>::iterator pIter; for (pIter = listFile.begin(); pIter != listFile.end(); pIter++) { if (strcmp((*pIter)->filePath, filePath.c_str()) == 0) { FILEINFO *p = *pIter; listFile.remove(*pIter); delete p; break; } }
} void CSmtp::DeleteAllAttachment() /*删除所有的文件*/
{ for (list<FILEINFO *>::iterator pIter = listFile.begin(); pIter != listFile.end();) { FILEINFO *p = *pIter; pIter = listFile.erase(pIter); delete p; }
} void CSmtp::SetSrvDomain(string &domain)
{ this->domain = domain;
} void CSmtp::SetUserName(string &user)
{ this->user = user;
} void CSmtp::SetPass(string &pass)
{ this->pass = pass;
}
void CSmtp::SetTargetEmail(string &targetAddr)
{ this->targetAddr = targetAddr;
}
void CSmtp::SetEmailTitle(string &title)
{ this->title = title;
}
void CSmtp::SetContent(string &content)
{ this->content = content;
}
void CSmtp::SetPort(int port)
{ this->port = port;
} //发送多封邮件到多个地址
int CSmtp::SendVecotrEmail()
{if (m_vectorTargetEamil.empty()){return -1;//没有目地邮箱地址}int nRet = 0;vector <string>::iterator it;for (it=m_vectorTargetEamil.begin(); it!=m_vectorTargetEamil.end(); it++){targetAddr = *it;SendEmail_Ex();}return nRet;
}//添加目地邮箱地址
void CSmtp::AddTargetEmail(string &strTargetEmail)
{vector <string>::iterator it;for (it=m_vectorTargetEamil.begin(); it!=m_vectorTargetEamil.end(); it++){if (!it->compare(strTargetEmail)){break;}}if (it == m_vectorTargetEamil.end()){m_vectorTargetEamil.push_back(strTargetEmail);}
}
测试
#include "stdafx.h"#include "Smtp.h" int _tmain(int argc, _TCHAR* argv[])
{CSmtp smtp( <span style="white-space:pre"> </span>25, /*smtp端口*/ "smtp.163.com", /*smtp服务器地址*/ "12345678@163.com", <span style="white-space:pre"> </span>/*你的邮箱地址*/ "12345678", <span style="white-space:pre"> </span>/*邮箱密码*/ "987654321@163.com", <span style="white-space:pre"> </span>/*目的邮箱地址*/ <span style="white-space:pre"> </span>"TEST", /*主题*/ <span style="white-space:pre"> </span>"测试测试!收到请回复!" /*邮件正文*/ <span style="white-space:pre"> </span>); //添加附件时注意,\一定要写成\\,因为转义字符的缘故
// string filePath("D:\\附件.txt");
// smtp.AddAttachment(filePath); /*还可以调用CSmtp::DeleteAttachment函数删除附件,还有一些函数,自己看头文件吧!*/ //单个发送<span style="white-space:pre"> </span>int err; <span style="white-space:pre"> </span>if ((err = smtp.SendEmail_Ex()) != 0) <span style="white-space:pre"> </span>{ <span style="white-space:pre"> </span> <span style="white-space:pre"> </span>if (err == 1) <span style="white-space:pre"> </span>cout << "错误1: 由于网络不畅通,发送失败!" << endl; <span style="white-space:pre"> </span>if (err == 2) <span style="white-space:pre"> </span>cout << "错误2: 用户名错误,请核对!" << endl; <span style="white-space:pre"> </span>if (err == 3) <span style="white-space:pre"> </span>cout << "错误3: 用户密码错误,请核对!" << endl; <span style="white-space:pre"> </span>if (err == 4) <span style="white-space:pre"> </span>cout << "错误4: 请检查附件目录是否正确,以及文件是否存在!" << endl; <span style="white-space:pre"> </span>}//群发string strTarEmail = "12345678@qq.com";smtp.AddTargetEmail(strTarEmail);int err; if ((err = smtp.SendVecotrEmail()) != 0) { if (err == -1) cout << "错误-1: 没有目地邮箱地址!" << endl; if (err == 1) cout << "错误1: 由于网络不畅通,发送失败!" << endl; if (err == 2) cout << "错误2: 用户名错误,请核对!" << endl; if (err == 3) cout << "错误3: 用户密码错误,请核对!" << endl; if (err == 4) cout << "错误4: 请检查附件目录是否正确,以及文件是否存在!" << endl; }system("pause");return 0;
}
这篇关于邮件正文及其附件的发送的C++实现的文章就介绍到这儿,希望我们推荐的文章对编程师们有所帮助!