一、C++郵件發送功能
C++實現郵件發送功能需要藉助第三方庫，比如Poco、OpenSSL等。使用這些庫，可以通過SMTP協議在C++代碼中嵌入發送郵件的功能，也可以在代碼中直接調用郵件發送接口。以下是基於Poco庫實現的C++郵件發送示例：
#include <Poco/Net/MailMessage.h>
#include <Poco/Net/SMTPClientSession.h>
#include <Poco/Net/StringPartSource.h>
using namespace Poco::Net;
int main(int argc, char** argv)
{
// 從控制台參數中讀取郵件發送參數
std::string smtpServer = argv[1];
std::string sender = argv[2];
std::string recipient = argv[3];
std::string subject = argv[4];
std::string content = argv[5];
// 構造郵件消息對象
MailMessage message;
message.setSender(sender);
message.addRecipient(MailRecipient(MailRecipient::PRIMARY_RECIPIENT, recipient));
message.setSubject(subject);
message.setContentType("text/plain; charset=UTF-8");
message.setContent(content, MailMessage::ENCODING_8BIT);
// 構造SMTP客戶端會話對象
SMTPClientSession smtpSession(smtpServer);
smtpSession.login();
smtpSession.sendMessage(message);
smtpSession.close();
return 0;
}
二、郵件發送功能流程圖
郵件發送功能流程圖如下：
三、Excel郵件發送功能
將Excel表格轉換成郵件並發送也是常見的郵件發送需求。可以使用LibXL等第三方Excel操作庫實現這一功能。以下是基於LibXL實現的Excel郵件發送示例：
#include <xl.h>
#include <Poco/Net/MailMessage.h>
#include <Poco/Net/SMTPClientSession.h>
using namespace Poco::Net;
int main(int argc, char** argv)
{
// 從控制台參數中讀取郵件發送參數
std::string smtpServer = argv[1];
std::string sender = argv[2];
std::string recipient = argv[3];
std::string subject = argv[4];
std::string fileName = argv[5];
// 打開Excel表格
BookHandle book = xlCreateBook();
if (book)
{
if (xlBookLoad(book, fileName.c_str()))
{
SheetHandle sheet = xlBookGetSheet(book, 0);
if (sheet)
{
int numRows = xlSheetLastRow(sheet);
int numCols = xlSheetLastCol(sheet);
std::string content;
for (int r = 0; r < numRows; ++r)
{
for (int c = 0; c < numCols; ++c)
{
content += xlSheetReadStr(sheet, r, c, NULL) + "\t";
}
content += "\n";
}
// 構造郵件消息對象並發送
MailMessage message;
message.setSender(sender);
message.addRecipient(MailRecipient(MailRecipient::PRIMARY_RECIPIENT, recipient));
message.setSubject(subject);
message.setContentType("text/plain; charset=UTF-8");
message.setContent(content, MailMessage::ENCODING_8BIT);
SMTPClientSession smtpSession(smtpServer);
smtpSession.login();
smtpSession.sendMessage(message);
smtpSession.close();
}
}
xlBookRelease(book);
}
return 0;
}
四、Word郵件發送功能
將Word文檔轉換成郵件並發送也是常見的郵件發送需求。可以使用Aspose Words等第三方Word操作庫實現這一功能。以下是基於Aspose Words實現的Word郵件發送示例：
#include <Aspose.Words.Cpp/Model/Document/Document.h>
#include <Poco/Net/MailMessage.h>
#include <Poco/Net/SMTPClientSession.h>
#include <Poco/Net/StringPartSource.h>
using namespace Aspose::Words;
using namespace Poco::Net;
int main(int argc, char** argv)
{
// 從控制台參數中讀取郵件發送參數
std::string smtpServer = argv[1];
std::string sender = argv[2];
std::string recipient = argv[3];
std::string subject = argv[4];
std::string fileName = argv[5];
// 打開Word文檔並讀取內容
std::unique_ptr doc(new Document(fileName));
std::string content = doc->get_OriginalFileName();
// 構造郵件消息對象並發送
MailMessage message;
message.setSender(sender);
message.addRecipient(MailRecipient(MailRecipient::PRIMARY_RECIPIENT, recipient));
message.setSubject(subject);
message.setContentType("text/plain; charset=UTF-8");
message.setContent(content, MailMessage::ENCODING_8BIT);
SMTPClientSession smtpSession(smtpServer);
smtpSession.login();
smtpSession.sendMessage(message);
smtpSession.close();
return 0;
}
五、Spring Boot郵件發送功能
與C++不同，Java有自帶的郵件發送功能，可以直接使用JavaMail API實現郵件發送。在Spring Boot項目中，可以使用Spring Framework郵件發送模塊簡化郵件發送功能的實現。以下是基於Spring郵件發送模塊實現的郵件發送示例：
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import java.util.Properties;
public class DemoApplication
{
public static void main(String[] args)
{
// 讀取郵件發送參數
String smtpServer = args[0];
String sender = args[1];
String recipient = args[2];
String subject = args[3];
String content = args[4];
// 構造郵件發送客戶端對象
JavaMailSender mailSender = new JavaMailSenderImpl();
Properties properties = new Properties();
properties.setProperty("mail.smtp.host", smtpServer);
mailSender.setJavaMailProperties(properties);
// 構造郵件消息對象並發送
SimpleMailMessage message = new SimpleMailMessage();
message.setFrom(sender);
message.setTo(recipient);
message.setSubject(subject);
message.setText(content);
mailSender.send(message);
}
}
六、代碼完整示例
以下是C++實現郵件發送功能的完整示例代碼，其中包括了C++、Excel、Word三個功能的實現：
#include <xl.h>
#include <Aspose.Words.Cpp/Model/Document/Document.h>
#include <Poco/Net/MailMessage.h>
#include <Poco/Net/SMTPClientSession.h>
#include <Poco/Net/StringPartSource.h>
using namespace Poco::Net;
void sendMail(const std::string& smtpServer, const std::string& sender, const std::string& recipient, const std::string& subject, const std::string& content)
{
MailMessage message;
message.setSender(sender);
message.addRecipient(MailRecipient(MailRecipient::PRIMARY_RECIPIENT, recipient));
message.setSubject(subject);
message.setContentType("text/plain; charset=UTF-8");
message.setContent(content, MailMessage::ENCODING_8BIT);
SMTPClientSession smtpSession(smtpServer);
smtpSession.login();
smtpSession.sendMessage(message);
smtpSession.close();
}
void sendExcel(const std::string& smtpServer, const std::string& sender, const std::string& recipient, const std::string& subject, const std::string& fileName)
{
BookHandle book = xlCreateBook();
if (book)
{
if (xlBookLoad(book, fileName.c_str()))
{
SheetHandle sheet = xlBookGetSheet(book, 0);
if (sheet)
{
int numRows = xlSheetLastRow(sheet);
int numCols = xlSheetLastCol(sheet);
std::string content;
for (int r = 0; r < numRows; ++r)
{
for (int c = 0; c < numCols; ++c)
{
content += xlSheetReadStr(sheet, r, c, NULL) + "\t";
}
content += "\n";
}
sendMail(smtpServer, sender, recipient, subject, content);
}
}
xlBookRelease(book);
}
}
void sendWord(const std::string& smtpServer, const std::string& sender, const std::string& recipient, const std::string& subject, const std::string& fileName)
{
std::unique_ptr<Aspose::Words::Document> doc(new Aspose::Words::Document(fileName));
std::string content = doc->get_OriginalFileName();
sendMail(smtpServer, sender, recipient, subject, content);
}
int main(int argc, char** argv)
{
std::string smtpServer = argv[1];
std::string sender = argv[2];
std::string recipient = argv[3];
std::string subject = argv[4];
std::string fileName = argv[5];
std::string extension = fileName.substr(fileName.find_last_of(".") + 1);
if (extension == "xls" || extension == "xlsx")
{
sendExcel(smtpServer, sender, recipient, subject, fileName);
}
else if (extension == "doc" || extension == "docx")
{
sendWord(smtpServer, sender, recipient, subject, fileName);
}
else
{
std::ifstream ifs(fileName);
std::string content((std::istreambuf_iterator<char>(ifs)), (std::istreambuf_iterator<char>()));
sendMail(smtpServer, sender, recipient, subject, content);
}
return 0;
}
原創文章，作者：小藍，如若轉載，請註明出處：https://www.506064.com/zh-hant/n/295859.html
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