最近在做扫码开票的需求，有个功能是需要开票成功之后通过邮件或者手机号的方式通知开票方，看了一下市面上的邮件发送费用，再结合客户的开票数量，果断放弃，于是只好自己开发免费不要钱的模板，怎么做呢，看下面：
1、引入依赖
<dependency>
<groupId>com.sun.mailgroupId>
<artifactId>javax.mailartifactId>
<version>1.6.2version>
dependency>
2、编写工具类
package com.ruoyi.common.utils;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.URLDataSource;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;
public class SendMailUtil {
public static String sendMail(String subject, String content, String htmlContent, String email, String attachmentUrl, String fileName) {
try {
int draft = 0;
int priority = 3;
int receiptFlag = 0;
Properties props = new Properties();
String host = "smtp.yeah.net";
props.setProperty("mail.transport.protocol", "smtp");
props.setProperty("mail.smtp.host", host);
props.setProperty("mail.smtp.port", "465");
props.setProperty("mail.smtp.auth", "true");
props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.setProperty("mail.smtp.socketFactory.fallback", "false");
System.setProperty("mail.mime.splitlongparameters", "false");
Session session = Session.getDefaultInstance(props);
String from = "xxx@yeah.net";
String passWord = "xxx";
Message message = new MimeMessage(session);
message.setSentDate(new Date());
((MimeMessage) message).setFrom("hyj");
message.setSubject(subject);
message.addRecipients(Message.RecipientType.TO, InternetAddress.parse(MimeUtility.encodeText(email)));
message.addRecipients(Message.RecipientType.CC, InternetAddress.parse(MimeUtility.encodeText("")));
message.addRecipients(Message.RecipientType.BCC, InternetAddress.parse(MimeUtility.encodeText("")));
if (draft == 1) {
message.setFlag(Flags.Flag.DRAFT, true);
}
if (priority == 1) {
message.setHeader("X-Priority", "1");
}
if (receiptFlag == 1) {
message.setHeader("Disposition-Notification-To", from);
}
Multipart multipart = new MimeMultipart();
MimeBodyPart txtPart = new MimeBodyPart();
txtPart.setContent(content, "text/html;charset=utf-8");
multipart.addBodyPart(txtPart);
MimeBodyPart part = new MimeBodyPart();
if (StringUtils.isNotEmpty(attachmentUrl)) {
URL url = new URL(attachmentUrl);
DataSource dataSource = new URLDataSource(url);
part.setDataHandler(new DataHandler(dataSource));
}
part.setFileName(MimeUtility.encodeText(fileName));
MimeBodyPart html = new MimeBodyPart();
html.setContent(htmlContent, "text/html;charset=utf-8");
multipart.addBodyPart(html);
multipart.addBodyPart(part);
message.setContent(multipart);
message.setFlag(Flags.Flag.RECENT, true);
message.saveChanges();
if (draft == 0) {
Transport transport = session.getTransport("smtp");
transport.connect(host, from, passWord);
transport.sendMessage(message, message.getAllRecipients());
transport.close();
}
return "success";
} catch (Exception e) {
return null;
}
}
public static void main(String[] args) {
try {
String s = sendMail("您有1张电子发票", "测试电子发票", "测试html
", "xxx@qq.com", "https://xxx.pdf", "电子发票.pdf");
} catch (Exception e) {
e.printStackTrace();
}
}
}
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3、编写邮件html模板
//该模板构建完成之后 需要放到资源目录下，后续使用InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("模板文件名称");读取
DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="description" content="xxxx">
<meta name="viewport" content="width=device-width, initial-scale=1">
head>
<body>
<div style="background-color:#ECECEC; padding: 35px;">
<table cellpadding="0" align="center"
style="width: 800px;height: 100%; margin: 0px auto; text-align: left; position: relative; border-top-left-radius: 5px; border-top-right-radius: 5px; border-bottom-right-radius: 5px; border-bottom-left-radius: 5px; font-size: 14px; font-family:微软雅黑, 黑体; line-height: 1.5; box-shadow: rgb(153, 153, 153) 0px 0px 5px; border-collapse: collapse; background-position: initial initial; background-repeat: initial initial;background:#fff;">
<tbody>
<tr>
<th valign="middle"
style="height: 25px; line-height: 25px; padding: 15px 35px; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: #42a3d3; background-color: #49bcff; border-top-left-radius: 5px; border-top-right-radius: 5px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px;">
<font face="微软雅黑" size="5" style="color: rgb(255, 255, 255); ">发票信息font>
th>
tr>
<tr>
<td style="word-break:break-all">
<div>
<p style="margin-left: 4%;margin-top: 5%;">尊敬的客户您好！p>
<p style="margin-left: 4%;">您于{3}消费并开具了电子发票，发票信息如下：p>
<p>p>
div>
<div style="padding:25px 35px 40px; background-color:#fff;">
<h2 style="margin: 5px 0px; text-align:center;">
<font color="#333333" style="line-height: 20px; ">
<font style="line-height: 22px; " size="4">
电子发票信息font>
font>
h2>
<p>购方名称：{0}p>
<p>发票代码：{1}p>
<p>发票号码：{2}p>
<p>开票日期：{3}p>
<p>合计金额：{4}p>
<p>发票链接：{5}p><br>
<div style="width:700px;margin:0 auto;">
<div style="padding:10px 10px 0;border-top:1px solid #ccc;color:#747474;margin-bottom:20px;line-height:1.3em;font-size:12px;">
<p style="font-weight: bold;font-size: 15px;">温馨提醒：p>
<p>灵税通电子发票为您提供便捷的发票服务，欢迎访问官网，选择您需要的发票解决方案https://xxx.com
此电子发票由灵税通发票助手交付。p><br>
<p>此为系统邮件，请勿回复<br>
Please do not reply to this system email
p>
div>
div>
div>
td>
tr>
tbody>
table>
div>
body>
html>
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4、构建邮件模板，动态传参
public String buildContent(String htmlPath, String buyerName, String invoiceCode, String invoiceNo, String invoiceDate, String totalAmount, String pdfUrl, String failCause, String orderNo) {
InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream(htmlPath);
BufferedReader fileReader = null;
StringBuffer buffer = new StringBuffer();
String line = "";
try {
fileReader = new BufferedReader(new InputStreamReader(inputStream));
while ((line = fileReader.readLine()) != null) {
buffer.append(line);
}
} catch (Exception e) {
logger.error(String.format("发送邮件读取模板失败，错误堆栈信息：%s", e.getMessage()));
} finally {
if (fileReader != null) {
try {
fileReader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
String htmlText = MessageFormat.format(buffer.toString(), buyerName, invoiceCode, invoiceNo, invoiceDate, totalAmount, pdfUrl, failCause, orderNo);
return htmlText;
}
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5、测试
private void KLsendEmail_SuccessForFree(OutputBaseInvoiceHistory history, String email, String buyerName) {
StringBuilder subBuilder = new StringBuilder();
subBuilder.append("您收到一张【").append(history.getSaleName()).append("】开具的发票【发票号码：").append(history.getInvoiceNo()).append("】");
String formatDate = sdf.format(new Date());
try {
String localPdfUrl = outPutFileToLocalUtiils.downParsePdf(history.getPdfUrl());
String htmlInfo = buildContent("scanCodeSuccessEmail.html", buyerName, history.getInvoiceCode(), history.getInvoiceNo(), formatDate, history.getOrderAmount(), localPdfUrl, "", "");
String send = SendMailUtil.sendMail(subBuilder.toString(), "", htmlInfo, email, history.getPdfUrl(), "电子发票.pdf");
if (StringUtils.isNotEmpty(send)) {
logger.info(LogUtils.formatLog("outputSuMailRequest", "sendInfoFromKaiLingSystemForFree", "KLsendEmail_SuccessForFree", email, String.format("扫码开票发送邮件通知成功：接收者对应邮箱：%s", email)));
}
} catch (Exception e) {
logger.info(String.format("扫码开票发送邮件信息出现异常！异常信息：%s，对应pdf地址:%s", e.getMessage(), history.getPdfUrl()));
}
}
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6、效果
