利用spring mail 发送带附件的邮件
1.核心代码
我们使用spring的mail，最主要是调用JavaMailSender mailSender和Template template;对象，创建message对象和cc、to、from等
MimeMailService类
private JavaMailSender mailSender;
private Template template;
/**
* Spring的MailSender.
*/
public void setMailSender(JavaMailSender mailSender) {
this.mailSender = mailSender;
}
/**
* 注入Freemarker引擎配置,构造Freemarker 邮件内容模板.
*/
public void setFreemarkerConfiguration(Configuration freemarkerConfiguration) throws IOException {
// 根据freemarkerConfiguration的templateLoaderPath载入文件.
template = freemarkerConfiguration.getTemplate("mailTemplate.ftl", DEFAULT_ENCODING);
}
/**
* 发送MIME格式的用户修改通知邮件.
* @param title 邮件名
* @param fileList 附件地址
* @return true/发送成功 false/发送失败
*/
public Boolean sendNotificationMail(String title, List<String> fileList) {
try {
// 创建message对象
MimeMessage msg = mailSender.createMimeMessage();
// 生成spring的helper类，赋值收件人、发件人、抄送、主题等
MimeMessageHelper helper = new MimeMessageHelper(msg, true, DEFAULT_ENCODING);
// 收件人
helper.setTo(C.MAIL_TO);
// helper.setCc("[email protected]");
// 发件人
helper.setFrom(C.MAIL_FROM);
// 主题
helper.setSubject(title + "日接客送客生成通知");
// 使用Freemarker生成html格式内容，即mailTemplate.ftl的内容
String content = generateContent(title);
helper.setText(content, true);
// 附件对象，添加进邮件helper内
for (String fileUrl : fileList) {
logger.info("接客送客生成:" + fileUrl);
File file = new File(fileUrl);
String fileNm = file.getName();
helper.addAttachment(fileNm, file);
}
mailSender.send(msg);
logger.info("HTML版邮件已发送至" + C.MAIL_TO);
return true;
} catch (MessagingException e) {
logger.error("构造邮件失败", e);
return false;
} catch (Exception e) {
logger.error("发送邮件失败", e);
return false;
}
}
/**
* 使用Freemarker生成html格式内容.
*/
@SuppressWarnings("unchecked")
private String generateContent(String userName) throws MessagingException {
try {
Map context = Collections.singletonMap("userName", userName);
return FreeMarkerTemplateUtils.processTemplateIntoString(template,
context);
} catch (IOException e) {
logger.error("生成邮件内容失败, FreeMarker模板不存在", e);
throw new MessagingException("FreeMarker模板不存在", e);
} catch (TemplateException e) {
logger.error("生成邮件内容失败, FreeMarker处理失败", e);
throw new MessagingException("FreeMarker处理失败", e);
}
}
2.依赖的文件配置
applicationContext-email.xml
<!-- 邮件发送器 --> <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl"> <property name="host" value="smtp.163.com" /> <property name="username" value="[email protected]" /> <property name="password" value="???" /> <property name="javaMailProperties"> <props> <prop key="mail.smtp.auth">true</prop> <prop key="mail.debug">true</prop> <!-- <prop key="mail.smtp.starttls.enable">true</prop> --> </props> </property> </bean> <!-- 文本邮件服务类 --> <!-- <bean id="simpleMailService" class="com.zy.email.SimpleMailService"> <property name="mailSender" ref="mailSender" /> <property name="textTemplate"> <value><![CDATA[ 用戶%1$s在%2$tF被修改. System Administrator. ]]></value> </property> </bean> --> <!-- MIME邮件服务类 --> <bean id="mimeMailService" class="com.zy.service.MimeMailService"> <property name="mailSender" ref="mailSender" /> <property name="freemarkerConfiguration" ref="freemarkerConfiguration"></property> </bean> <!-- 用于生成HTML邮件内容的Freemarker配置 --> <bean id="freemarkerConfiguration" class="org.springframework.ui.freemarker.FreeMarkerConfigurationFactoryBean"> <property name="templateLoaderPath" value="classpath:/" /> </bean>
mailTemplate.ftl(邮件模板)
<html>
<head>对账单生成通知</head>
<body>
<h1>对账单${userName}已经生成,请查看附件！</h1>
</body>
</html>
3.程序入口
@Autowired
public MimeMailService mimeMailService;
public void execute(){
List<String> list = new ArrayList<String>();
list.add("d:/002.jpg");
mimeMailService.sendNotificationMail("这是测试的title",list);
}
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