Could not autowire field: private org.springframework.mail.javamail.JavaMailSender - spring-boot

Question

I was trying to use spring boot to send email. However, I always get the warning of NoSuchBeanDifinition found. I know javaemailsender is an reference from the imported API, which is not a class with #Bean. Can anyone help me with that?
#RestController
public class SignUpController {
#Autowired
private UserRepository repo;
#Autowired
private SendingEmails sendingEmail;
#RequestMapping(method = RequestMethod.POST, value = "/signup")
public #ResponseBody
Object create(#Valid #RequestBody User user, BindingResult result, Errors error) throws MessagingException {
//Check the result, if error, return error and don't add user
System.out.println("Result: " + result);
if (result.hasErrors()) {
FieldError fieldError = result.getFieldError();
if (fieldError.getField().equals("email")) {
throw new DuplicateEmailException();
}
//Lazy Else
throw new DuplicateUsernameException();
}
User newUser = User.createUser(user.getUsername(), user.getEmail(), user.getPassword());
//String emailMessage = "Thank you, you username is"+user.getUsername();
sendingEmail.send("haha", "success of registration", "xy_jonathan#hotmail.com");
return repo.save(newUser);
}
#ResponseStatus(value = HttpStatus.BAD_REQUEST, reason = "Email already exists")
public class DuplicateEmailException extends RuntimeException {
}
#ResponseStatus(value = HttpStatus.BAD_REQUEST, reason = "Username already exists")
public class DuplicateUsernameException extends RuntimeException {
}
}
#Service
public class SendingEmails {
#Autowired
private JavaMailSender javaMailSender;
public void send(String subject, String to, String text) throws MessagingException{
MimeMessage message = javaMailSender.createMimeMessage();
MimeMessageHelper helper;
helper = new MimeMessageHelper(message,true);
helper.setSubject(subject);
helper.setTo(to);
helper.setText(text);
javaMailSender.send(message);
}
}
Error:
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.badmap.model.SendingEmails com.badmap.controller.SignUpController.sendingEmail; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sendingEmails': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.mail.javamail.JavaMailSender com.badmap.model.SendingEmails.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: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 16 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sendingEmails': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.mail.javamail.JavaMailSender com.badmap.model.SendingEmails.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: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1120)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1044)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)
... 18 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.mail.javamail.JavaMailSender com.badmap.model.SendingEmails.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: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 29 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.mail.javamail.JavaMailSender] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1301)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1047)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)
... 31 more

Answer 1

if you use spring-boot,you can check your config.
spring.mail.host=smtp.xxx.com
spring.mail.username=xxxx#xxx.com
spring.mail.password=xxxx
spring.mail.properties.mail.smtp.auth=true