[C++] 纯文本查看 复制代码
#include <iostream>
#include <string>
#include <vector>
#include <cstring>
#ifdef _WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#pragma comment(lib, "ws2_32.lib")
typedef int socklen_t;
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <netdb.h>
#define INVALID_SOCKET -1
#define SOCKET_ERROR -1
typedef int SOCKET;
#endif
class SMTPClient {
public:
// 构造函数，初始化服务器地址和端口
SMTPClient(const std::string& server, int port) : server(server), port(port) {
#ifdef _WIN32
WSADATA wsaData;
WSAStartup(MAKEWORD(2, 2), &wsaData); // 初始化Winsock
#endif
}
// 析构函数，清理Winsock
~SMTPClient() {
#ifdef _WIN32
WSACleanup();
#endif
}
// 连接到SMTP服务器
bool connectToServer() {
struct addrinfo hints, * res;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
int status = getaddrinfo(server.c_str(), std::to_string(port).c_str(), &hints, &res);
if (status != 0) {
std::cerr << "错误：无法解析主机名. " << gai_strerror(status) << std::endl;
return false;
}
sock = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
if (sock == INVALID_SOCKET) {
std::cerr << "错误：无法创建套接字." << std::endl;
freeaddrinfo(res);
return false;
}
// 连接到服务器
if (::connect(sock, res->ai_addr, res->ai_addrlen) == SOCKET_ERROR) {
std::cerr << "错误：无法连接到服务器." << std::endl;
freeaddrinfo(res);
return false;
}
freeaddrinfo(res);
return true;
}
//// 发送邮件
//void sendMail(const std::string& from, const std::vector<std::string>& to, const std::string& subject, const std::string& body) {
// std::string msg = "EHLO localhost\r\n"; // 向服务器发送EHLO命令
// send(msg);
// recv();
// msg = "MAIL FROM:<" + from + ">\r\n"; // 发送MAIL FROM命令
// send(msg);
// recv();
// for (const auto& recipient : to) {
// msg = "RCPT TO:<" + recipient + ">\r\n"; // 发送RCPT TO命令
// send(msg);
// recv();
// }
// msg = "DATA\r\n"; // 发送DATA命令
// send(msg);
// recv();
// // 组装邮件内容
// msg = "Subject: " + subject + "\r\n";
// msg += "To: ";
// for (const auto& recipient : to) {
// msg += recipient + ";";
// }
// msg += "\r\n";
// msg += "\r\n" + body + "\r\n.\r\n";
// send(msg);
// recv();
// msg = "QUIT\r\n"; // 发送QUIT命令
// send(msg);
// recv();
//}
// 发送邮件
void sendMail(const std::string& from, const std::vector<std::string>& to, const std::string& subject, const std::string& body) {
std::string msg = "EHLO localhost\r\n";
send(msg);
recv();
msg = "MAIL FROM:<" + from + ">\r\n";
send(msg);
recv();
for (const auto& recipient : to) {
msg = "RCPT TO:<" + recipient + ">\r\n";
send(msg);
recv();
}
msg = "DATA\r\n";
send(msg);
recv();
msg = "Subject: " + subject + "\r\n";
msg += "To: ";
for (const auto& recipient : to) {
msg += recipient + ";";
}
msg += "\r\n";
msg += "Content-Type: text/html; charset=GB2312\r\n";
msg += "\r\n" + body + "\r\n.\r\n";
send(msg);
recv();
msg = "QUIT\r\n";
send(msg);
recv();
}
private:
std::string server;
int port;
SOCKET sock;
// 发送数据
void send(const std::string& data) {
::send(sock, data.c_str(), data.length(), 0);
}
// 接收服务器响应
void recv() {
char buffer[1024];
int len = ::recv(sock, buffer, sizeof(buffer) - 1, 0);
if (len > 0) {
buffer[len] = '\0';
std::cout << buffer; // 打印服务器响应
}
}
};
int main() {
SMTPClient client("***.***.com", 25); // 初始化SMTP客户Duan
if (client.connectToServer()) { // 连接到服务器
// HTML格式的邮件内容
std::string body = R"(
<html>
<head>
<title>Test Email</title>
</head>
<body>
<h1>This is a Test Email</h1>
<p>演示 <strong>HTML</strong> content.</p>
<p style="color: red;">This is a red paragraph.</p>
</body>
</html>
)";
client.sendMail("zhikongzhongxin@*******.com", { "Yong.Han@******.com" }, "Test Email", body); // 发送邮件
}
return 0;
}
