Spring整合framemarker发邮件 - Spring | 灰灰是菇凉 = huihui.coding@gmail.com

# 需求

系统添加一个用户之后，给这个用户发邮件，告知用户名密码等。为了不阻塞主线程，发邮件使用一个子线程来执行。

# 实现

	<!-- 配置 freeMarker 视图解析器 -->
	<bean id="viewResolverFtl" class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">
	<property name="viewClass" value="org.springframework.web.servlet.view.freemarker.FreeMarkerView"/>
	<property name="contentType" value="text/html; charset=utf-8"/>
	<property name="cache" value="false" />
	<property name="suffix" value=".ftl" />
	<property name="order" value="0"/>
	<property name="requestContextAttribute" value="request"/>
	</bean>

	<!-- 配置 freeMarker 的模板路径 -->
	<bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
	<property name="templateLoaderPath" value="/WEB-INF/view/ftl/" />
	<property name="defaultEncoding" value="UTF-8" />
	<property name="freemarkerSettings">
	<props>
	<prop key="template_update_delay">0</prop>
	</props>
	</property>
	</bean>

	<!--MailSender-->
	<bean id="sender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
	<property name="host">
	<value>smtp.263.net</value>
	</property>
	<property name="username">
	<value>xxx@sss</value>
	</property>
	<property name="password">
	<value>xxx</value>
	</property>
	<property name="protocol"><value>smtp</value></property>
	<property name="defaultEncoding"><value>utf-8</value></property>
	<property name="javaMailProperties">
	<props>
	<prop key="mail.smtp.auth">true</prop>
	<prop key="mail.smtp.timeout">10000</prop>
	<prop key="mail.smtp.from">xxx@sss</prop>
	<prop key="mail.debug">true</prop>
	<prop key="mail.smtp.socketFactory.class">javax.net.ssl.SSLSocketFactory</prop>
	<prop key="mail.smtp.socketFactory.port">465</prop>
	<prop key="mail.smtp.port">465</prop>
	<prop key="mail.smtp.host">smtp.263.net</prop>
	</props>
	</property>
	</bean>

Spring 线程池配置：

	<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

	<bean id="threadPool" class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
	<!-- 线程池维护线程的最少数量 -->
	<property name="corePoolSize" value="5"></property>
	<!-- 允许的空闲时间 -->
	<property name="keepAliveSeconds" value="200"></property>
	<!-- 线程池维护线程的最大数量 -->
	<property name="maxPoolSize" value="10"></property>
	<!-- 缓存队列 -->
	<property name="queueCapacity" value="20"></property>
	<!-- 对拒绝 task 的处理策略 -->
	<property name="rejectedExecutionHandler">
	<bean class="java.util.concurrent.ThreadPoolExecutor.CallerRunsPolicy"></bean>
	</property>
	</bean>
	</beans>

邮件发送线程类：

	import org.springframework.beans.factory.annotation.Autowired;
	import org.springframework.mail.javamail.JavaMailSender;
	import org.springframework.stereotype.Service;
	import javax.mail.internet.MimeMessage;

	@Service
	public class MailThreadServiceImpl {

	@Autowired
	private JavaMailSender javaMailSender;

	public Runnable execute(MimeMessage mimeMessage) {
	return new SendMail(mimeMessage);
	}

	public class SendMail implements Runnable {

	private MimeMessage mimeMessage;

	public SendMail(MimeMessage mimeMessage) {
	this.mimeMessage = mimeMessage;
	}

	@Override
	public void run() {
	if (mimeMessage != null) {
	MailThreadServiceImpl.this.javaMailSender.send(mimeMessage);
	System.out.println("===============邮件发送成功=================");
	}
	}
	}
	}

业务逻辑方法：

	public void sendEmail(User user) {

	MimeMessage message = null;

	try {
	Map<String, String> data = new HashMap<>();
	data.put("logoUrl", ReadPropertiesUtil.readMailLogo());
	data.put("loginName", user.getLoginName());
	data.put("password", password);

	Template template = freeMarkerConfigurer.getConfiguration().getTemplate("mail.ftl");
	// 解析模板并替换动态数据，最终 content 将替换模板文件中的 ${content} 标签。
	String htmlText = FreeMarkerTemplateUtils.processTemplateIntoString(template, data);

	message = mailSender.createMimeMessage();
	MimeMessageHelper helper = new MimeMessageHelper(message, false, "utf8");
	helper.setFrom(mailSender.getUsername());
	helper.setTo(user.getEmail());
	helper.setSubject("注册成功-邮件");
	helper.setText(htmlText, true);

	threadPoolTaskExecutor.execute(mailThreadService.execute(message));
	} catch (MessagingException e) {
	System.out.println("=========new MimeMessageHelper(message, false, \"utf8\")===========创建模板邮件失败");
	} catch (IOException e) {
	System.out.println("=========freeMarkerConfigurer.getConfiguration().getTemplate(\"mail.ftl\")==========配置模板失败");
	} catch (TemplateException e) {
	System.out.println("=========FreeMarkerTemplateUtils.processTemplateIntoString(template, data);========模板渲染动态数据异常");
	} catch (Exception e) {
	System.out.println("========================发送邮件失败==========================");
	}
	}

邮件模板：

mail.ftl

	<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
	<title>Insert title here</title>
	<style>
	body,h1,h2,h3,h4,h5,h6,p,ul,ol,dl,dd,input,button,table,tr,td {
	margin: 0;
	padding: 0;
	outline: none;
	}

	h1,h2,h3,h4,h5,h6,b,i,em {
	font-size: 16px;
	font-weight: normal;
	font-style: normal;
	}

	a {
	color: #fff;
	text-decoration: none;
	}

	ul,ol {
	list-style: none;

	}

	input {
	outline: none;
	}

	input,img,select {
	vertical-align: top;
	}

	.last-bottom {
	border-bottom: none !important;
	}

	.last-right {
	/border-right: none !important;/
	margin-right: 0 !important;
	}

	.fl {
	float: left;
	}

	.fr {
	float: right;
	}

	/* 清除浮动 */
	.clearfix:after {
	content: "";
	display: block;
	clear: both;
	}

	.clearfix {
	zoom: 1;
	}

	html {
	font-size: 8.888888886666667vw;
	}

	body {
	background: #f9f9f9;
	}

	.box {
	width: 484px;
	border-radius: 5px;
	margin: 60px auto;
	}

	.top {
	height:42px;
	background: ;
	/background:#313D4B url(D:/freemarker/logo.png) no-repeat center;/
	background:#313D4B url(${logoUrl}) no-repeat center;
	background-size:100px 42px;
	}

	.content {
	height:192px;
	background: #fff;
	overflow: hidden;
	}

	.word {
	font-size: 12px;
	color: #7c7c7c;
	margin-top: 23px;
	margin-left: 23px;
	}

	.center {
	width: 230px;
	margin: 30px auto;
	font-size: 12px;
	color: #7c7c7c;
	}

	.pass{
	margin-top: 11px;
	}

	.name {
	color: #000;
	}

	.add {
	margin-top: 11px;
	}

	.res {
	color:#4098ca;
	}

	.bottom {
	width: 260px;
	margin: 30px auto;
	font-size: 12px;
	color: #c7c7c7;
	}

	.first {
	text-align: center;
	}

	.sec {
	width: 260px;
	text-align: center;
	}

	.reach {
	color: #4297cd;
	}

	.third {
	text-align: center;
	}
	</style>
	</head>
	<body>
	<div class="box">
	<div class="top"></div>
	<div class="content">
	<div class="word">欢迎使用系统,您的账户已经成功开通. </div>
	<div class="center">
	<div class="user">
	<span class="username">用户名:</span>
	<span class="name">${loginName}</span>
	</div>
	<div class="pass">
	<span class="password">密码:</span>
	<span class="name">${password}</span>
	</div>
	<div class="add">
	<span class="address">系统访问地址:</span>
	<span class="res">
	<a href="http://xxx" style="color: blue">
	http://xxx</a>
	</span>
	</div>
	</div>
	</div>
	<div class="bottom">
	<p class="first">如果您在使用系统时遇到任何问题可发邮件至</p>
	<p class="sec"><span class="reach">xxx@xxx</span>获取帮助信息.</p>
	<p class="third">本邮件由系统自动发出,请不要回复此邮件.</p>
	</div>
	</div>
	</body>
	</html>

# 问题

在本地和测试服务器上都可以成功发送邮件，只有在线上服务器发送不成功。

# 原因

是由于线上服务器无法解析域名地址，需要在代码中将邮件服务器地址改成 IP 的地址，将 smtp.263.net 改为 211.150.65.66。

# 需求

# 实现

# 问题

# 原因

服务器脚本处理压缩包

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