springboot 实现html模板表格以及附件混合邮件发送的方法
最近接手一个邮件发送的功能，这里记录下，供以后需要时查看或在次基础上优化开发
1.首先是添加springboot-mail的依赖包
org.springframework.boot
spring-boot-starter-mail
2.创建下面的邮件类 Email.java
import org.apache.commons.lang3.time.DateFormatUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.*;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.text.MessageFormat;
import java.util.*;
/**
* Created by HX on 2019/6/27.
*/
public class Email {
private static final Logger LOGGER = LoggerFactory.getLogger(Email.class);
private static String defaultSenderName = "";// 默认的发件人用户名，defaultEntity用得到
private static String defaultSenderPass = "";// 默认的发件人密码，defaultEntity用得到
private static String defaultSmtpHost = "";// 默认的邮件服务器地址，defaultEntity用得到
private String smtpHost; // 邮件服务器地址
private Integer port;//邮件服务器端口号
private String sendUserName; // 发件人的用户名
private String sendUserPass; // 发件人密码
private MimeMessage mimeMsg; // 邮件对象
private Session session;
private Properties props;
private Multipart mp;// 附件添加的组件
private List files = new LinkedList();// 存放附件文件
private void init() {
if (props == null) {
props = System.getProperties();
}
props.setProperty("mail.smtp.host", smtpHost);
props.setProperty("mail.smtp.auth", "true"); // 需要身份验证
final String smtpPort = "465";
props.setProperty("mail.smtp.port", smtpPort);
props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.setProperty("mail.smtp.socketFactory.fallback", "false");
props.setProperty("mail.smtp.socketFactory.port", smtpPort);
session = Session.getInstance(props);
// 置true可以在控制台（console)上看到发送邮件的过程
session.setDebug(true);
// 用session对象来创建并初始化邮件对象
mimeMsg = new MimeMessage(session);
// 生成附件组件的实例
mp = new MimeMultipart();
}
private Email(String smtpHost,Integer port, String sendUserName, String sendUserPass, String to, String cc, String mailSubject, String mailBody,
List attachments) {
this.smtpHost = smtpHost;
this.sendUserName = sendUserName;
this.sendUserPass = sendUserPass;
this.port = port;
init();
setFrom(sendUserName);
setTo(to);
setCC(cc);
setBody(mailBody);
setSubject(mailSubject);
if (attachments != null) {
for (String attachment : attachments) {
addFileAffix(attachment);
}
}
}
/**
* 邮件实体
*
* @param smtpHost
* 邮件服务器地址
* @param sendUserName
* 发件邮件地址
* @param sendUserPass
* 发件邮箱密码
* @param to
* 收件人，多个邮箱地址以半角逗号分隔
* @param cc
* 抄送，多个邮箱地址以半角逗号分隔
* @param mailSubject
* 邮件主题
* @param mailBody
* 邮件正文
* @param attachments
* 附件路径
* @return
*/
public static Email entity(String smtpHost,Integer port, String sendUserName, String sendUserPass, String to, String cc, String mailSubject, String mailBody,
List attachments) {
return new Email(smtpHost,port, sendUserName, sendUserPass, to, cc, mailSubject, mailBody, attachments);
}
/**
* 默认邮件实体，用了默认的发送帐号和邮件服务器
*
* @param to
* 收件人，多个邮箱地址以半角逗号分隔
* @param cc
* 抄送，多个邮箱地址以半角逗号分隔
* @param subject
* 邮件主题
* @param body
* 邮件正文
* @param attachments
* 附件全路径
* @return
*/
public static Email defaultEntity(String to, String cc, String subject, String body, List attachments) {
return new Email(defaultSmtpHost,null, defaultSenderName, defaultSenderPass, to, cc, subject, body, attachments);
}
/**
* 设置邮件主题
*
* @param mailSubject
* @return
*/
private boolean setSubject(String mailSubject) {
try {
mimeMsg.setSubject(mailSubject);
} catch (Exception e) {
return false;
}
return true;
}
/**
* 设置邮件内容,并设置其为文本格式或HTML文件格式，编码方式为UTF-8
*
* @param mailBody
* @return
*/
private boolean setBody(String mailBody) {
try {
BodyPart bp = new MimeBodyPart();
bp.setContent("" + mailBody, "text/html;charset=UTF-8");
// 在组件上添加邮件文本
mp.addBodyPart(bp);
} catch (Exception e) {
System.err.println("设置邮件正文时发生错误！" + e);
return false;
}
return true;
}
/**
* 添加一个附件
*
* @param filename
* 邮件附件的地址，只能是本机地址而不能是网络地址，否则抛出异常
* @return
*/
public boolean addFileAffix(String filename) {
try {
if (filename != null && filename.length() > 0) {
BodyPart bp = new MimeBodyPart();
FileDataSource fileds = new FileDataSource(filename);
bp.setDataHandler(new DataHandler(fileds));
bp.setFileName(MimeUtility.encodeText(fileds.getName(), "utf-8", null)); // 解决附件名称乱码
mp.addBodyPart(bp);// 添加附件
files.add(fileds);
}
} catch (Exception e) {
System.err.println("增加邮件附件：" + filename + "发生错误！" + e);
return false;
}
return true;
}
/**
* 删除所有附件
*
* @return
*/
public boolean delFileAffix() {
try {
FileDataSource fileds = null;
for (Iterator it = files.iterator(); it.hasNext();) {
fileds = it.next();
if (fileds != null && fileds.getFile() != null) {
fileds.getFile().delete();
}
}
} catch (Exception e) {
return false;
}
return true;
}
/**
* 设置发件人地址
*
* @param from
* 发件人地址
* @return
*/
private boolean setFrom(String from) {
try {
mimeMsg.setFrom(new InternetAddress(from));
} catch (Exception e) {
return false;
}
return true;
}
/**
* 设置收件人地址
*
* @param to 收件人的地址
* @return
*/
private boolean setTo(String to) {
if (to == null)
return false;
try {
mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
} catch (Exception e) {
return false;
}
return true;
}
/**
* 设置抄送
*
* @param cc
* @return
*/
private boolean setCC(String cc) {
if (cc == null) {
return false;
}
try {
mimeMsg.setRecipients(Message.RecipientType.CC, InternetAddress.parse(cc));
} catch (Exception e) {
return false;
}
return true;
}
/**
* 发送邮件
*
* @return
*/
public boolean send() throws Exception {
mimeMsg.setContent(mp);
mimeMsg.saveChanges();
System.out.println("正在发送邮件....");
Transport transport = session.getTransport("smtp");
// 连接邮件服务器并进行身份验证
transport.connect(smtpHost,port,sendUserName, sendUserPass);
// 发送邮件
transport.sendMessage(mimeMsg, mimeMsg.getRecipients(Message.RecipientType.TO));
System.out.println("发送邮件成功！");
transport.close();
// Transport.send(mimeMsg);
System.out.println("发送邮件成功！");
return true;
}
public static String buildContent(List> list) throws IOException {
//加载邮件html模板
String fileName = "pod-scale-alarm.html";
InputStream inputStream = ClassLoader.getSystemResourceAsStream(fileName);
BufferedReader fileReader = new BufferedReader(new InputStreamReader(inputStream));
StringBuffer buffer = new StringBuffer();
String line = "";
try {
while ((line = fileReader.readLine()) != null) {
buffer.append(line);
}
} catch (Exception e) {
LOGGER.error("读取文件失败，fileName:{}", fileName, e);
} finally {
inputStream.close();
fileReader.close();
}
String contentText = "以下是分销平台产品列表信息, 敬请查看.
below is the information of product list on those distribution platforms, please check. ";
//邮件表格header
String header = "产品名称 分销平台名称 分销平台产品类别 分销平台产品页URL 分销平台产品推广URL 推广url远程地址ip 分销平台产品页页数 上架时间 更新时间 ";
StringBuilder linesBuffer = new StringBuilder();
if(list!=null&&list.size()>0) {
list.forEach(map -> {
linesBuffer.append("" + map.get("productName") +
" " + map.get("distributionPlatformName") +
" " + map.get("productType") +
" " + map.getOrDefault("distributionPlatformDetailUrl","无") +
" "+ map.getOrDefault("distributionPlatformProductUrl","无") +
" "+ map.getOrDefault("addressIp","无") +
" "+ map.getOrDefault("distributionPlatformPageNum","无") +
" "+ map.getOrDefault("onShelfTime","无") +
" " + map.getOrDefault("updateTime","无") + " ", " ");
// htmlText = htmlText.replaceAll(" ", " ");
return htmlText;
}
public static void main(String[] args) throws Exception {
String userName = "****"; // 发件人邮箱
String password = "*****"; // 发件人密码(不是登录密码是授权码，需要到邮箱里设置开通授权码功能)
String smtpHost = "smtp.exmail.qq.com"; // 邮件服务器
Integer port = 465; // 邮件服务器端口号
String to = "*****"; // 收件人，多个收件人以半角逗号分隔
String cc = "*****"; // 抄送，多个抄送以半角逗号分隔
String subject = "这是邮件的主题"; // 主题
List> list = new ArrayList<>();
for(int i=0;i<5;i++){
HashMap dateMap = new HashMap<>();
dateMap.put("productName","魔域");
dateMap.put("productType","页面网游");
dateMap.put("distributionPlatformName","网游社区");
dateMap.put("distributionPlatformDetailUrl","www.baidu.com");
dateMap.put("addressIp","0.0.0.0");
dateMap.put("distributionPlatformPageNum","1");
dateMap.put("onShelfTime","2019-06-28");
dateMap.put("updateTime","2019-06-28");
list.add(dateMap);
}
String body = Email.buildContent(list); // 正文，可以用html格式的哟
// List attachments = Arrays.asList("D:\\tmp\\1.png", "D:\\tmp\\2.png"); // 附件的路径，多个附件也不怕
Email email = Email.entity(smtpHost,port, userName, password, to, cc, subject, body, null);
email.send(); // 发送！
}
}
2.创建html模板
pod-scale-alarm.html
Title
3.将main方法中的邮箱参数修改成自己的邮箱运行结果如下
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