java - 通过字段 'freemarkerConfig' 表达的不满足的依赖关系

Question

我想使用 Apache Freemaker 发送电子邮件我尝试过:

@Service
public class EMailSender {

    @Autowired
    private Configuration freemarkerConfig;

    public void sendMail(String to, String subject, String content) {
        try {               freemarkerConfig.setClassForTemplateLoading(this.getClass(), "/templates");

            EmailRegistrationModel obj = new EmailRegistrationModel();
            obj.setMailSubject("Test");

            Map<String, Object> model = new HashMap<String, Object>();
            model.put("title", "Some name");
            obj.setModel(model);

            String data = geFreeMarkerTemplateContent(model);    
            helper.setText(data, true);

            mailSender.send(message);
        } catch (MessagingException ex) {
            ex.printStackTrace();
        }
    }

    private String geFreeMarkerTemplateContent(Map<String, Object> model){
        StringBuffer content = new StringBuffer();
        try{
         content.append(FreeMarkerTemplateUtils.processTemplateIntoString( 
                 freemarkerConfig.getTemplate("emails_activate.html"), model));
         return content.toString();
        }catch(Exception e){
            System.out.println("Exception occured while processing fmtemplate:"+e.getMessage());
        }
          return "";
    }
}

配置对象:

public class EmailRegistrationModel {       
    private String mailContent;     
    private Map<String, Object> model;
    ....
}

当我部署代码时，我得到:

Error creating bean with name 'EMailSender': Unsatisfied dependency expressed through field 'freemarkerConfig'; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type 'freemarker.template.Configuration' available: expected single matching bean but found 2: getFreeMarkerConfiguration,freeMarkerConfiguration

你知道我该如何解决这个问题吗？我想我需要添加一些 freemarker 配置？你能给我一些建议吗？

Answer 1

问题不在于您需要很少的 Freemarker 配置，而是需要两个。特别注意异常消息的最后部分:

No qualifying bean of type 'freemarker.template.Configuration' available: expected single matching bean but found 2: getFreeMarkerConfiguration,freeMarkerConfiguration

Spring Boot 已经附带了 FreeMarkerAutoConfiguration 。很可能您还提供了手动定义的另一个，您可以验证一下吗？

请坚持查看 application.properties 中的 Freemarker 部分或者换句话说:使用 Spring Boot 的 spring.freemarker.* 属性配置您的应用程序。