如何发送电子邮件与Freemarker模板在春季启动应用程序?

Question

我正在尝试发送电子邮件与Freemarker模板。

代码:

public String geContentFromTemplate(Map<String, Object> model) throws IOException, TemplateException {
StringWriter stringWriter = new StringWriter();
fmConfiguration.getTemplate("email-template.ftlh").process(model, stringWriter);
return stringWriter.getBuffer().toString();
}
public void sendEmailWithTemplate(String to, String subject, User user) {
MimeMessage mimeMessage = mailSender.createMimeMessage();
try {
MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage, true);
mimeMessageHelper.setSubject(subject);
mimeMessageHelper.setFrom(emailFrom);
mimeMessageHelper.setTo(to);
Map<String, Object> model = new HashMap<>();
model.put("firstName", user.getFirstName());
model.put("lastName", user.getLastName());
String content = geContentFromTemplate(model);
mimeMessageHelper.setText(content, true);
mailSender.send(mimeMessageHelper.getMimeMessage());
} catch (MessagingException | IOException | TemplateException e) {
e.printStackTrace();
}
}

Freemarker Bean:

@Bean
public FreeMarkerConfigurationFactoryBean getFreeMarkerConfiguration() {
FreeMarkerConfigurationFactoryBean fmConfigFactoryBean = new FreeMarkerConfigurationFactoryBean();
fmConfigFactoryBean.setTemplateLoaderPath("classpath:templates/email-template.ftlh");
return fmConfigFactoryBean;
}

我的模板位于Spring Boot应用程序:resources/templates/email-template.ftlh

我收到这个异常:freemarker.template.TemplateNotFoundException: Template not found for name "email-template.ftlh". The name was interpreted by this TemplateLoader: org.springframework.ui.freemarker.SpringTemplateLoader@33cceeb3.

Answer 1

我通过更改@Bean修复了这个问题。我删除了之前的一个并创建了另一个:

@Bean
public FreeMarkerConfigurer freeMarkerConfigurer(){
freemarker.template.Configuration configuration = new freemarker.template.Configuration(freemarker.template.Configuration.VERSION_2_3_19);
TemplateLoader templateLoader = new ClassTemplateLoader(this.getClass(), "/templates/");
configuration.setTemplateLoader(templateLoader);
FreeMarkerConfigurer freeMarkerConfigurer = new FreeMarkerConfigurer();
freeMarkerConfigurer.setConfiguration(configuration);
return freeMarkerConfigurer;
}

模板加载也是这样实现的:

Template template = freeMarkerConfigurer.getConfiguration().getTemplate("email-template.ftlh");
String htmlBody = FreeMarkerTemplateUtils.processTemplateIntoString(template, model);