Javax 邮件配置迁移到 jakarta 邮件

Question

我正在尝试将用于发送电子邮件的 javax.mail API 迁移到符合雅加达标准的较新实现。 我已经通过以下代码配置了 JavaMailSender：

package pl.app.email;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.JavaMailSenderImpl;

@Configuration
public class EmailConfig {

    @Bean
    public JavaMailSender getJavaMailSender(AppProperties appProperties) {
        var mailSender = new JavaMailSenderImpl();
        mailSender.setHost(appProperties.getEmailProperties().getHost());
        mailSender.setPort(appProperties.getEmailProperties().getPort());

        mailSender.setUsername(appProperties.getEmailProperties().getUsername());
        mailSender.setPassword(appProperties.getEmailProperties().getPassword());
        mailSender.setDefaultEncoding("UTF-8");

        var props = mailSender.getJavaMailProperties();
        props.put("mail.transport.protocol", appProperties.getEmailProperties().getMailTransportProtocol());
        props.put("mail.smtp.auth", appProperties.getEmailProperties().getMailSmtpAuth());
        props.put("mail.smtp.starttls.enable", appProperties.getEmailProperties().getMailSmtpStartTlsEnable());
        props.put("mail.debug", appProperties.getEmailProperties().getMailDebug());

        return mailSender;
    }

}

我从更改 maven 依赖项开始

<dependency>
  <groupId>javax.mail</groupId>
  <artifactId>javax.mail-api</artifactId>
  <version>1.6.2</version>
</dependency>
<dependency>
  <groupId>com.sun.mail</groupId>
  <artifactId>javax.mail</artifactId>
  <version>1.6.2</version>
</dependency>

到较新的 maven 依赖项

<dependency>
  <groupId>jakarta.mail</groupId>
  <artifactId>jakarta.mail-api</artifactId>
  <version>2.1.0</version>
</dependency>
<dependency>
  <groupId>com.sun.mail</groupId>
  <artifactId>jakarta.mail</artifactId>
  <version>2.0.1</version>
</dependency>

在应用程序启动期间发生错误：

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.mail.javamail.JavaMailSender]: Factory method 'getJavaMailSender' threw exception with message: Provider for jakarta.activation.spi.MimeTypeRegistryProvider cannot be found
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:171)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:648)
    ... 72 common frames omitted
Caused by: java.lang.RuntimeException: Provider for jakarta.activation.spi.MimeTypeRegistryProvider cannot be found
    at jakarta.activation.FactoryFinder.find(FactoryFinder.java:90)
    at jakarta.activation.MimetypesFileTypeMap.getImplementation(MimetypesFileTypeMap.java:389)
    at jakarta.activation.MimetypesFileTypeMap.loadFile(MimetypesFileTypeMap.java:271)
    at jakarta.activation.MimetypesFileTypeMap.<init>(MimetypesFileTypeMap.java:108)
    at jakarta.activation.MimetypesFileTypeMap.<init>(MimetypesFileTypeMap.java:313)
    at org.springframework.mail.javamail.ConfigurableMimeFileTypeMap.createFileTypeMap(ConfigurableMimeFileTypeMap.java:150)
    at org.springframework.mail.javamail.ConfigurableMimeFileTypeMap.getFileTypeMap(ConfigurableMimeFileTypeMap.java:123)
    at org.springframework.mail.javamail.ConfigurableMimeFileTypeMap.afterPropertiesSet(ConfigurableMimeFileTypeMap.java:110)
    at org.springframework.mail.javamail.JavaMailSenderImpl.<init>(JavaMailSenderImpl.java:115)
    at pl.app.email.EmailConfig.getJavaMailSender(EmailConfig.java:13)
    ...

在哪里可以找到 jakarta.activation.spi.MimeTypeRegistryProvider 的提供程序？ 我错过了一些新的依赖吗？

Answer 1

我在中找到了 com.sun.activation.registries.MimeTypeRegistryProviderImpl 提供者

<dependency>
  <groupId>org.eclipse.angus</groupId>
  <artifactId>angus-activation</artifactId>
  <version>1.0.0</version>
</dependency>

依赖。 代码仍然可以编译并启动而不会丢失 jakarta.activation.spi.MimeTypeRegistryProvider 错误。 这是我发现的第一个实现。