无xml配置——使用Spring发送自定义模版邮件通知

import java.io.File;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import javax.mail.internet.MimeMessage;

import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.ui.freemarker.FreeMarkerTemplateUtils;
import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;

import freemarker.cache.FileTemplateLoader;
import freemarker.cache.TemplateLoader;
import freemarker.template.Configuration;
import freemarker.template.Template;

/**
*
* Description：邮件发送类
* Date：		2018年1月16日
*/
public class MailSender {

private static JavaMailSenderImpl sender;

private static Configuration configuration;

private static ExecutorService executor;

private MailSender() {
init();
}

// 静态私有内部类用于实现线程安全的懒加载
private static class MailSenderHolder {
private static final MailSender instance = new MailSender();
}

public static final MailSender getInstance() {
return MailSenderHolder.instance;
}

private void init() {
System.out.println("初始化邮件发送MailSender类...");
sender = getMailSender();
configuration = getConfiguration();
executor = Executors.newFixedThreadPool(4);
}

/**
*
* Description：邮件发送类初始化
* Date：		2018年1月16日
* @author 		shaqf
* @email 		sqfsky@163.com
* @return
*/
private JavaMailSenderImpl getMailSender() {
JavaMailSenderImpl mailSender = new JavaMailSenderImpl();
mailSender.setHost("smtp.exmail.izhichi.com");
mailSender.setUsername("admin@izhichi.com");
mailSender.setPassword("Admin@123456");
mailSender.setProtocol("smtp");
mailSender.setDefaultEncoding("UTF-8");
Properties javaMailProperties = new Properties();
javaMailProperties.setProperty("mail.smtp.auth", "true");
javaMailProperties.setProperty("mail.smtp.from", "admin@izhichi.com");
javaMailProperties.setProperty("mail.debug", "true");
mailSender.setJavaMailProperties(javaMailProperties);
return mailSender;
}

/**
*
* Description：邮件模版初始化
* Date：		2018年1月16日
* @author 		shaqf
* @email 		sqfsky@163.com
* @return
*/
private Configuration getConfiguration() {
try {
FileTemplateLoader ftl1 = new FileTemplateLoader(new File(
"E:\\zhuomian\\数据化运维平台\\智能运维平台\\svn\\disruptive\\manage\\src\\cn\\monitor\\bdweb\\email\\mailTemplate\\"));
TemplateLoader[] loaders = new TemplateLoader[] { ftl1 };
FreeMarkerConfigurer freeMarkerConfigurer = new FreeMarkerConfigurer();
freeMarkerConfigurer.setPreTemplateLoaders(loaders);
Properties settings = new Properties();
settings.setProperty("template_update_delay", "1800");// 刷新模板的周期，单位为秒
settings.setProperty("default_encoding", "UTF-8");// 模板的编码格式
settings.setProperty("locale", "zh_CN"); // 本地化设置
freeMarkerConfigurer.setFreemarkerSettings(settings);
freeMarkerConfigurer.afterPropertiesSet();

// 通过指定模板名获取FreeMarker模板实例
Configuration configuration = freeMarkerConfigurer.getConfiguration();
return configuration;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}

/**
*
* Description：简单发送
* Date：		2018年1月16日
* @author 		shaqf
* @email 		sqfsky@163.com
* @param to	目标邮件地址
* @param title	邮件标题
* @param body	邮件内容
*/
public void sendSimpleMail(String to, String title, String body) {
SimpleMailMessage smm = new SimpleMailMessage();
smm.setFrom("admin@izhichi.com");
smm.setTo(to);
smm.setSubject(title);smm.setText(body);
// 异步发送邮件
executor.execute(new Runnable() {
@Override
public void run() {
sender.send(smm);
}
});
}

/**
*
* Description：通过模版发送数据
* Date：		2018年1月16日
* @author 		shaqf
* @email 		sqfsky@163.com
* @param to			目标邮件地址
* @param templateName	发送采用模版名称
* @param title			邮件标题
* @param templateData	用户动态数据
* @param fileName		附件完整名称(包含文件格式)
* @param file			附件封装File
*/
public void sendHtmlMail(String to, String templateName, String title, Map<String, ?> templateData, String fileName,
File file) {
try {
// 使用JavaMail的MimeMessage，支付更加复杂的邮件格式和内容
MimeMessage msg = sender.createMimeMessage();

// 创建MimeMessageHelper对象，处理MimeMessage的辅助类
MimeMessageHelper helper = new MimeMessageHelper(msg, true);

// 使用辅助类MimeMessage设定参数
helper.setFrom(sender.getUsername());
helper.setTo(to);
helper.setSubject(title);
helper.setText(getMailText(templateName, templateData), true);

// 加入附件
if (file != null)
helper.addAttachment(fileName, file);

// 发送邮件
executor.execute(new Runnable() {
@Override
public void run() {
sender.send(msg);
}
});
} catch (Exception e) {
e.printStackTrace();
}
}

/**
*
* Description：把动态数据注入到模版中
* Date：		2018年1月16日
* @author 		shaqf
* @email 		sqfsky@163.com
* @param templateName  指定模版
* @param templateData  用户数据
* @return
*/
private String getMailText(String templateName, Map<String, ?> templateData) {
try {
String htmlText = "";
Template tpl = configuration.getTemplate(templateName);
htmlText = FreeMarkerTemplateUtils.processTemplateIntoString(tpl, templateData);
return htmlText;
} catch (Exception e) {
e.printStackTrace();
}
return templateData.toString();
}

private void sendHtmlMailTest() {
Map<String, Object> templateData = new HashMap<>();
templateData.put("email", "shaqf@izhichi.com");
templateData.put("link", "http://www.izhichi.com");
File file = new File("C:\\Users\\Administrator\\Desktop\\aa\\monitor-gateway.xls");
MailSender.getInstance().sendHtmlMail("sqfsky@163.com", "testTemplate.ftl", "智能运维告警通知", templateData,
"告警附件.xls", file);
}

public static void main(String[] args) {

MailSender.getInstance().sendSimpleMail("shaqf@izhichi.com", "测试标题", "测试内容");

// MailSender.getInstance().sendHtmlMailTest();
}

}

<html>
<head></head>
<body>
<table style="background:#ffffff" class="ecxbaidu_pass" bgcolor="" cellpadding="0" cellspacing="0" width="100%">
<tbody>
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<table cellpadding="0" cellspacing="0" width="100%">
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<div style="line-height:40px;height:40px"></div>
<p style="padding:0px"><strong style="font-size:14px;line-height:24px;color:#333333;font-family:arial,sans-serif">尊敬的${email}用户：</strong></p>
<p style="padding:0px;line-height:24px;font-size:12px;color:#333333;font-family:'\005b8b\004f53',arial,sans-serif">您好！</p>
<p style="padding:0px;line-height:24px;font-size:12px;color:#333333;font-family:'\005b8b\004f53',arial,sans-serif">您好！这是一封您订阅的告警邮件通知。</p>
<p style="padding:0px;line-height:24px;font-size:12px;color:#333333;font-family:'\005b8b\004f53',arial,sans-serif">1、您可以通过***平台平台进行相关问题的处理。</p>
<p style="padding:0px;line-height:24px;font-size:12px;color:#333333;font-family:'\005b8b\004f53',arial,sans-serif">2、您如果忘记密码，点击<a href="${link}" style="line-height:24px;font-size:12px;font-family:arial,sans-serif;color:#0000cc" target="_blank">「忘记密码」</a> 来找回密码。</p>
<div style="line-height:80px;height:80px"></div>
<p style="padding:0px;line-height:24px;font-size:12px;color:#333333;font-family:'\005b8b\004f53',arial,sans-serif">专注自动化运维服务的运维平台</p>
<p style="padding:0px;line-height:24px;font-size:12px;color:#333333;font-family:'\005b8b\004f53',arial,sans-serif">Copyright disruptive Corporation. All rights reserved. 版权所有</p>
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</body>
</html>