可以通过Spring Boot从gmail.com发送电子邮件

在我的spring boot应用程序中:

implementation 'org.springframework.boot:spring-boot-starter'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.springframework.boot:spring-boot-starter-mail'

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.stereotype.Component;

@Component
public class EmailService {

@Autowired
    private JavaMailSender javaMailSender;


    public void sendEmail(String emailTo, NotifyActionEnum actionEnum, String orderId)
            throws AddressException, MessagingException, IOException {
        String subject = "Order with number " + orderId + " was success";           
        SimpleMailMessage msg = new SimpleMailMessage();
        msg.setTo(emailTo);
        msg.setSubject("Order notification: " + appName + " ver." + appVersion);
        msg.setText(subject);
        javaMailSender.send(msg);
    }

在application.yml中:

server:
  port: 8091
  servlet:
    contextPath: /api/v1

spring:
  application:
    name: My app name
  http:
    converters:
      preferred-json-mapper: gson
  mail:
    host: smtp.gmail.com
    port: 587
    username: some_my_account@gmail.com
    password: some_my_account_pass
    tls: true
    properties.mail.smtp:
      auth: true
      starttls.enable: true
      ssl.trust: smtp.gmail.com

2020-03-08 18:18:17.753  INFO 16092 --- [nio-8091-exec-1] r.o.s.e.controllers.NotifyController     : notifyByEmail: email = a_subscriber@mail.ru, notifyActionEnum = ORDER_DELETE, orderId = 10
2020-03-08 18:18:23.189 ERROR 16092 --- [nio-8091-exec-1] o.a.c.c.C.[.[.[.[dispatcherServlet]      : Servlet.service() for servlet [dispatcherServlet] in context with path [/api/v1] threw exception [Request processing failed; nested exception is org.springframework.mail.MailAuthenticationException: Authentication failed; nested exception is javax.mail.AuthenticationFailedException: 535-5.7.8 Username and Password not accepted. Learn more at
535 5.7.8  https://support.google.com/mail/?p=BadCredentials l3sm57702489wrq.62 - gsmtp
] with root cause

javax.mail.AuthenticationFailedException: 535-5.7.8 Username and Password not accepted. Learn more at
535 5.7.8  https://support.google.com/mail/?p=BadCredentials l3sm57702489wrq.62 - gsmtp

    at com.sun.mail.smtp.SMTPTransport$Authenticator.authenticate(SMTPTransport.java:947) ~[jakarta.mail-1.6.4.jar:1.6.4]
    at com.sun.mail.smtp.SMTPTransport.authenticate(SMTPTransport.java:858) ~[jakarta.mail-1.6.4.jar:1.6.4]
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:762) ~[jakarta.mail-1.6.4.jar:1.6.4]
    at javax.mail.Service.connect(Service.java:342) ~[jakarta.mail-1.6.4.jar:1.6.4]
    at org.springframework.mail.javamail.JavaMailSenderImpl.connectTransport(JavaMailSenderImpl.java:518) ~[spring-context-support-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:437) ~[spring-context-support-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:323) ~[spring-context-support-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:312) ~[spring-context-support-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at com.myprojectservice.EmailService.sendEmail(EmailService.java:47) ~[main/:na]
    at com.myprojectcontrollers.NotifyController.notifyByEmail(NotifyController.java:33) ~[main/:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) ~[spring-webmvc-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) ~[spring-webmvc-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) ~[spring-webmvc-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) ~[spring-webmvc-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.2.4.RELEASE.jar:5.2.4.RELEASE]

P、 但是如果我在gmail.com上打开浏览器,我就可以通过我的证书成功登录gmail.com。