使用spring-boot-starter-mail后出现“应用程序无法启动”

Question

想要实现基于spring-boot-starter-mail的简单邮件发送器解决方案，添加依赖项和设置属性后，我尝试运行应用程序，发现出现错误。我认为值得注意的是，我不是，也不是要实现Spring Cloud。只有邮件服务。我不明白为什么spring boot需要来自这些包的一些服务。

尝试了不同版本的依赖，定义了一些@Bean，但我不认为这是问题所在

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-mail</artifactId>
            <version>2.0.1.RELEASE</version>
        </dependency>

日志：

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2019-10-23 00:07:05.752 ERROR 19576 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Parameter 1 of method mailNotifier in de.codecentric.boot.admin.server.config.AdminServerNotifierAutoConfiguration$MailNotifierConfiguration required a bean of type 'de.codecentric.boot.admin.server.domain.entities.InstanceRepository' that could not be found.

The following candidates were found but could not be injected:
    - Bean method 'instanceRepository' in 'AdminServerAutoConfiguration' not loaded because @ConditionalOnBean (types: de.codecentric.boot.admin.server.config.AdminServerMarkerConfiguration$Marker; SearchStrategy: all) did not find any beans of type de.codecentric.boot.admin.server.config.AdminServerMarkerConfiguration$Marker


Action:

Consider revisiting the entries above or defining a bean of type 'de.codecentric.boot.admin.server.domain.entities.InstanceRepository' in your configuration.

只想通过smtp.gmail.com发送电子邮件希望spring-boot-starter-mail就足够了。

谢谢!

Answer 1

正如LHCHIN评论的那样，这是<dependencyManagement/>中的spring-boot-admin-starter-server和spring-boot-admin-dependencies的问题