1、引入依賴包
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
2、配置檔案
spring:
mail:
host: smtp.qq.com
# 發送者的郵箱賬号
username: [email protected]
# 郵箱密碼授權碼
password: ****
default-encoding: utf-8
properties:
mail:
debug: true
smtp:
auth: true
starttls:
enable: true
required: true
3、業務邏輯
3.1 定義郵件發送類
@Data
public class MailInfo {
// 郵件接收人
private String[] receiver;
// 郵件主題
private String subject;
// 郵件的文本内容
private String content;
// 抄送人
private String[] cc;
// 郵件附件的檔案名
private String[] attachFileNames;
// 郵件内容内嵌圖檔
private Map<String,String> imageMap;
}
3.2 定義 ISendMsgHandle
public interface ISendMsgHandle {
/**
* 功能描述：發送text郵件
* @param mailInfo 郵件資訊
* @return {@link }
* @author weigang
* @date 2021/12/29 9:27 上午
*/
void sendSimpleTextEmail(MailInfo mailInfo);
/**
* 功能描述：發送html郵件
* @param mailInfo 郵件資訊
* @param html 是否是html郵件
* @return {@link }
* @author weigang
* @date 2021/12/29 9:27 上午
*/
void sendHtmlEmail(MailInfo mailInfo,boolean html);
/**
* 功能描述：發送文本内容（内嵌圖檔）且帶附件的html郵件
* @param mailInfo 郵件資訊
* @return {@link }
* @author wi-gang
* @date 2021/12/29 2:49 下午
*/
void sendEnclosureEmail(MailInfo mailInfo);
}
3.3 郵件處理邏輯
import com.weigang.email.bean.MailInfo;
import com.weigang.email.handle.ISendMsgHandle;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Component;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.annotation.Resource;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import java.util.*;
@Slf4j
@Component
public class EmailSendMsgHandle implements ISendMsgHandle {
@Resource
private JavaMailSender javaMailSender;
@Value(value = "${spring.mail.username}")
private String emailFrom;
@Override
public void sendSimpleTextEmail(MailInfo mailInfo) {
try {
SimpleMailMessage mailMessage = new SimpleMailMessage();
//發件人
mailMessage.setFrom(emailFrom);
//接收人
mailMessage.setTo(mailInfo.getReceiver());
//郵件主題
mailMessage.setSubject(mailInfo.getSubject());
//郵件抄送
mailMessage.setCc(mailInfo.getCc());
//郵件内容
mailMessage.setText(mailInfo.getContent());
//發送郵件
javaMailSender.send(mailMessage);
} catch (Exception e) {
log.error("郵件發送失敗:{}", e.getMessage());
}
}
@Override
public void sendHtmlEmail(MailInfo mailInfo,boolean html) {
try {
MimeMessage mimeMailMessage = javaMailSender.createMimeMessage();
//true 表示需要建立一個multipart message
MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMailMessage);
//發件人
mimeMessageHelper.setFrom(emailFrom);
//接收人
mimeMessageHelper.setTo(mailInfo.getReceiver());
//郵件主題
mimeMessageHelper.setSubject(mailInfo.getSubject());
//郵件抄送
mimeMessageHelper.setCc(mailInfo.getCc());
//郵件内容
mimeMessageHelper.setText(mailInfo.getContent(), html);
javaMailSender.send(mimeMailMessage);
} catch (Exception e) {
log.error("郵件發送失敗:{}", e.getMessage());
}
}
@Override
public void sendEnclosureEmail(MailInfo mailInfo) {
try {
MimeMessage mimeMailMessage = javaMailSender.createMimeMessage();
//true 表示需要建立一個multipart message
MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMailMessage, true);
//發件人
mimeMessageHelper.setFrom(emailFrom);
//郵件接收人
mimeMessageHelper.setTo(mailInfo.getReceiver());
//郵件主題
mimeMessageHelper.setSubject(mailInfo.getSubject());
//郵件抄送
mimeMessageHelper.setCc(mailInfo.getCc());
//設定顯示的發件時間
mimeMessageHelper.setSentDate(new Date());
MimeMultipart allMultipart = new MimeMultipart();
//建立代表郵件正文和附件的各個MimeBodyPart對象
MimeBodyPart contentPart = createContent(mailInfo.getContent(), mailInfo.getImageMap());
allMultipart.addBodyPart(contentPart);
//建立用于組合郵件正文和附件的MimeMultipart對象
for (int i = 0; i < mailInfo.getAttachFileNames().length; i++) {
allMultipart.addBodyPart(createAttachment(mailInfo.getAttachFileNames()[i]));
}
//設定整個郵件内容為最終組合出的MimeMultipart對象
mimeMailMessage.setContent(allMultipart);
mimeMailMessage.saveChanges();
javaMailSender.send(mimeMailMessage);
} catch (Exception e) {
log.error("郵件發送失敗:{}", e.getMessage());
}
}
/**
* 功能描述：郵件附件
* @param filename 檔案路徑
* @return {@link MimeBodyPart}
* @author wi-gang
* @date 2021/12/29 2:50 下午
*/
public MimeBodyPart createAttachment(String filename) throws Exception {
//建立儲存附件的MimeBodyPart對象，并加入附件内容和相應的資訊
MimeBodyPart attachPart = new MimeBodyPart();
FileDataSource fsd = new FileDataSource(filename);
attachPart.setDataHandler(new DataHandler(fsd));
attachPart.setFileName(fsd.getName());
return attachPart;
}
/**
* 功能描述：文本内容
* @param body html格式的文本内容
* @return {@link MimeBodyPart}
* @author wi-gang
* @date 2021/12/29 2:50 下午
*/
public MimeBodyPart createContent(String body) throws Exception {
//建立代表組合Mime消息的MimeMultipart對象，将該MimeMultipart對象儲存到MimeBodyPart對象
MimeBodyPart contentPart = new MimeBodyPart();
MimeMultipart contentMultipart = new MimeMultipart("related");
//建立用于儲存HTML正文的MimeBodyPart對象，并将它儲存到MimeMultipart中
MimeBodyPart htmlBodyPart = new MimeBodyPart();
htmlBodyPart.setContent(body, "text/html;charset=UTF-8");
contentMultipart.addBodyPart(htmlBodyPart);
//将MimeMultipart對象儲存到MimeBodyPart對象
contentPart.setContent(contentMultipart);
return contentPart;
}
/**
* 功能描述：文本内嵌圖檔
* @param body html格式的文本内容
* @param map 圖檔集合
* @return {@link MimeBodyPart}
* @author wi-gang
* @date 2021/12/29 2:50 下午
*/
public MimeBodyPart createContent(String body, Map<String, String> map) throws Exception {
//建立代表組合Mime消息的MimeMultipart對象，将該MimeMultipart對象儲存到MimeBodyPart對象
MimeBodyPart contentPart = new MimeBodyPart();
MimeMultipart contentMultipart = new MimeMultipart("related");
//建立用于儲存HTML正文的MimeBodyPart對象，并将它儲存到MimeMultipart中
MimeBodyPart htmlBodyPart = new MimeBodyPart();
htmlBodyPart.setContent(body, "text/html;charset=UTF-8");
contentMultipart.addBodyPart(htmlBodyPart);
if (map != null && map.size() > 0) {
Set<Map.Entry<String, String>> set = map.entrySet();
for (Map.Entry<String, String> entry : set) {
//建立用于儲存圖檔的MimeBodyPart對象，并将它儲存到MimeMultipart中
MimeBodyPart gifBodyPart = new MimeBodyPart();
FileDataSource fds = new FileDataSource(entry.getValue());//圖檔所在的目錄的絕對路徑
gifBodyPart.setDataHandler(new DataHandler(fds));
gifBodyPart.setContentID(entry.getKey()); //cid的值
contentMultipart.addBodyPart(gifBodyPart);
}
}
//将MimeMultipart對象儲存到MimeBodyPart對象
contentPart.setContent(contentMultipart);
return contentPart;
}
}
3.4 測試
（1）簡單郵件發送
@Test
void sendSimpleTextEmail() {
MailInfo mailInfo = new MailInfo();
mailInfo.setReceiver(new String[]{"[email protected]"});
mailInfo.setSubject("測試主題");
mailInfo.setContent("郵件内容");
emailSendMsgHandle.sendSimpleTextEmail(mailInfo);
}
（2）以html格式發送
@Test
public void sendHTMLMail() {
MailInfo mailBean = new MailInfo();
//接收人
mailBean.setReceiver(new String[]{"[email protected]"});
mailBean.setSubject("SpringBootMailHTML之這是一封HTML格式的郵件");
//抄送給誰
mailBean.setCc(new String[]{"[email protected]","winsky.com"});
StringBuilder sb = new StringBuilder();
sb.append("<h2>SpirngBoot測試郵件HTML</h2>")
.append("<p style='text-align:left'>這是一封HTML郵件...</p>")
.append("<p> 時間為："+ new Date() +"</p>");
mailBean.setContent(sb.toString());
//true、false控制以普通文本發送還是以html格式發送
emailSendMsgHandle.sendHtmlEmail(mailBean,true);
}
（2）以html格式發送并帶附件
@Test
void sendEmail() {
MailInfo mailBean = new MailInfo();
mailBean.setReceiver(new String[]{"[email protected]"});
mailBean.setSubject("SpringBootMailHTML之這是一封HTML格式的郵件");
mailBean.setCc(new String[]{"[email protected]","winsky.com"});
StringBuilder sb = new StringBuilder();
sb.append("<h2>SpirngBoot測試郵件HTML</h2>")
.append("<p style='text-align:left'>這是一封HTML郵件...</p>")
.append("<p> 時間為："+ new Date() +"</p>");
mailBean.setContent(sb.toString());
mailBean.setAttachFileNames(new String[]{"/Users/Downloads/密碼管理.xlsx","/Users/Downloads/1635834323888.jpg"});
emailSendMsgHandle.sendEnclosureEmail(mailBean);
}
（3）以html格式内嵌圖檔并帶附件發送
@Test
void sendEmail2() {
MailInfo mailBean = new MailInfo();
mailBean.setReceiver(new String[]{"[email protected]"});
mailBean.setSubject("SpringBootMailHTML之這是一封HTML格式的郵件");
mailBean.setCc(new String[]{"[email protected]","winsky.com"});
StringBuilder sb = new StringBuilder();
sb.append("<h2>SpirngBoot測試郵件HTML</h2>")
.append("<p style='text-align:left'>這是一封HTML郵件...</p>")
.append("<a href=http://www.baidu.com>點選進入百度</a><br/>")
//内嵌圖檔
.append("<img src=\"cid:a00000001\"><br/><br/>")
.append("<img src=\"cid:a00000002\">")
.append("<p> 時間為："+ new Date() +"</p>");
mailBean.setContent(sb.toString());
//附件
mailBean.setAttachFileNames(new String[]{"/Users/Downloads/密碼管理.xlsx","/Users/Downloads/1635834323888.jpg"});
//内嵌了多少張圖檔，如果沒有，則new一個不帶值的Map
Map<String,String> image = new HashMap<>();
image.put("a00000001", "/Users/Downloads/WechatIMG22.jpg");
image.put("a00000002", "/Users/Downloads/face_1631083961355.png");
mailBean.setImageMap(image);
emailSendMsgHandle.sendEnclosureEmail(mailBean);
}
（4）以表格的形式發送郵件
log.info(" --- 任務排程開始 --- ");
try {
//查詢維保時間即将過期的産品
List<CustomerProductVo> customerProductList = customerService.selectCustomerProductList();
//根據項目編号去重
List<CustomerProductVo> newCustomerProductList = customerProductList.stream().filter(distinctByKey(CustomerProductVo::getProjectCode)).collect(Collectors.toList());
//發送郵件
MailInfo mailBean = new MailInfo();
// mailBean.setReceiver(new String[]{"[email protected]"});
mailBean.setSubject("維保時間即将過期的客戶産品");
mailBean.setCc(new String[]{"[email protected]"});
StringBuilder stringBuilder = new StringBuilder();
//表格制作
stringBuilder.append("\r\n");
stringBuilder.append("<html><head></head><body><h2>您好，以下内容是維保時間即将過期的客戶産品，請及時處理！</h2>");
stringBuilder.append("<table 5\" style=\"border:solid 1px #E8F2F9;font-size=14px;;font-size:22px;\">");
stringBuilder.append("<tr style=\"background-color: #428BCA; color:#ffffff\">" +
"<th width=\"180px\">客戶中文名稱</th>" +
"<th width=\"180px\">客戶英文名稱</th>" +
"<th width=\"180px\">項目名稱</th>" +
"<th width=\"180px\">項目編号</th>" +
// "<th width=\"180px\">産品名稱</th>" +
// "<th width=\"180px\">産品版本</th>" +
"<th width=\"180px\">查詢時間</th>" +
"<th width=\"200px\">維保結束時間</th>" +
"</tr>");
for (CustomerProductVo vo : newCustomerProductList) {
stringBuilder.append("</tr>");
stringBuilder.append("<td style=\"text-align:center\">" + vo.getCustomerChName() + "</td>");
stringBuilder.append("<td style=\"text-align:center\">" + vo.getCustomerEnName() + "</td>");
stringBuilder.append("<td style=\"text-align:center\">" + vo.getProjectName() + "</td>");
stringBuilder.append("<td style=\"text-align:center\">" + vo.getProjectCode() + "</td>");
// stringBuilder.append("<td style=\"text-align:center\">" + vo.getProductName() + "</td>");
// stringBuilder.append("<td style=\"text-align:center\">" + vo.getProductVersion() + "</td>");
stringBuilder.append("<td style=\"text-align:center\">" + DateUtils.date2Str(new SimpleDateFormat("yyyy-MM-dd")) + "</td>");
stringBuilder.append("<td style=\"text-align:center\">" + DateUtils.date2Str(vo.getDealine(),new SimpleDateFormat("yyyy-MM-dd")) + "</td>");
stringBuilder.append("</tr>");
}
stringBuilder.append("</table>");
stringBuilder.append("</body></html>");
//發送郵件
mailBean.setContent(stringBuilder.toString());
emailSendMsgHandle.sendHtmlEmail(mailBean,true);
} catch (Exception e) {
e.printStackTrace();
log.error("郵件發送失敗，失敗原因是：{}",e.getMessage());
}
log.info(" --- 執行完畢，時間："+DateUtils.now()+"---");