无法自动装配 org.springframework.mail.javamail.JavaMailSender
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Could not autowire org.springframework.mail.javamail.JavaMailSender
提问by Aeseir
I got the following problem when trying to run my application. Have debugged everything and still nothing.
尝试运行我的应用程序时遇到以下问题。已经调试了一切，仍然没有。
The IDE is finding the bean without any issue so I'm very confused as to what is happening here.
IDE 正在毫无问题地找到 bean，所以我对这里发生的事情感到非常困惑。
SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mailManager': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void com.testmail.app.service.implement.CustomMManagerService.setMailSender(org.springframework.mail.javamail.JavaMailSender); nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.mail.javamail.JavaMailSender] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
My bean generation is located in following file:
我的 bean 生成位于以下文件中：
@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.testmail.app")
public class WebConfig extends WebMvcConfigurerAdapter {
//CODE CODE CODE
@Bean
public JavaMailSenderImpl mailSender() {
JavaMailSenderImpl javaMailSender = new JavaMailSenderImpl();
javaMailSender.setProtocol("SMTP");
javaMailSender.setHost("127.0.0.1");
javaMailSender.setPort(25);
return javaMailSender;
}
// CODE CODE CODE
}
Code for CustomMManager:
CustomMManager 的代码：
public interface CustomMManager extends Serializable {
void sendMail(String mailFrom,String mailTo,String subject,String mailBody);
}
Finally the code for CustomMManagerService:
最后是 CustomMManagerService 的代码：
@Service("mailManager")
public class CustomMManagerService implements CustomMManager {
private JavaMailSender mailSender;
@Autowired
public void setMailSender(JavaMailSender mailSender) {
this.mailSender = mailSender;
}
@Override
public void sendMail(final String mailFrom, final String mailTo, final String subject, final String mailBody) {
try {
mailSender.send(new MimeMessagePreparator() {
public void prepare(MimeMessage mimeMessage)
throws Exception {
MimeMessageHelper message = new MimeMessageHelper(mimeMessage,
false, "UTF-8");
message.setFrom(mailFrom);
message.addTo(mailTo);
message.setSubject(subject);
message.setText(mailBody, true);
}
});
} catch (MailSendException e) {
// your codes;
}
}
}
Help is really appreciated.
非常感谢帮助。
采纳答案by Aeseir
As per comment from mserioli the answer is that the bean must be declared in the configuration file being called at root.
根据 mserioli 的评论，答案是必须在根目录调用的配置文件中声明 bean。
In this case: Move
在这种情况下：移动
@Bean
public JavaMailSenderImpl mailSender()
to
到
public class ExtraConfig {
@Bean
public JavaMailSenderImpl mailSender() {
JavaMailSenderImpl javaMailSender = new JavaMailSenderImpl();
javaMailSender.setProtocol("SMTP");
javaMailSender.setHost("127.0.0.1");
javaMailSender.setPort(25);
return javaMailSender;
}
}
which is called in:
这被称为：
@Override
protected Class<?>[] getRootConfigClasses() {
return new Class<?>[]{ExtraConfig.class};
}
Thus solving the problem. Thanks guys for assistance.
从而解决问题。谢谢大家的帮助。
回答by Gix
Have you tried to declare your bean returning the interface implemented? Something like this:
您是否尝试声明您的 bean 返回已实现的接口？像这样的东西：
@Bean
public JavaMailSender mailSender() {
回答by Gleidson Cardoso da Silva
You may have forgotten to set the following properties:
您可能忘记设置以下属性：
spring.mail.host
spring.mail.username
spring.mail.password
spring.mail.port
回答by leimbag
check application.properties config, such as:
spring.mail.host=smtp.xxx.com [email protected] spring.mail.password=xxxxx spring.mail.properties.mail.smtp.auth=true spring.mail.properties.mail.smtp.starttls.enable=true spring.mail.properties.mail.smtp.starttls.required=trueif you use spring-boot,can check should use @EnableAutoConfiguration this annotation
检查 application.properties 配置，例如：
spring.mail.host=smtp.xxx.com [email protected] spring.mail.password=xxxxx spring.mail.properties.mail.smtp.auth=true spring.mail.properties.mail.smtp.starttls.enable=true spring.mail.properties.mail.smtp.starttls.required=true如果你使用 spring-boot，可以检查是否应该使用 @EnableAutoConfiguration 这个注解
回答by Walterwhites
to create Bean don't forgot to specify mail properties, with Java class or in application.properties file, exemple
创建 Bean 时不要忘记指定邮件属性，使用 Java 类或在 application.properties 文件中，例如
# configuration email
spring.mail.host=smtp.gmail.com
spring.mail.port=587
spring.mail.username=email
spring.mail.password=password
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true
回答by dtrunk
As already stated you need to set at least spring.mail.hostin your application properties. Spring Boot autoconfiguration only creates a JavaMailSenderbean if the property is set: https://github.com/spring-projects/spring-boot/blob/master/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mail/MailSenderPropertiesConfiguration.java#L38
如前所述spring.mail.host，您至少需要在应用程序属性中进行设置。JavaMailSender如果设置了属性，Spring Boot 自动配置只会创建一个bean：https: //github.com/spring-projects/spring-boot/blob/master/spring-boot-project/spring-boot-autoconfigure/src/main/java /org/springframework/boot/autoconfigure/mail/MailSenderPropertiesConfiguration.java#L38
