先看怎么在spring boot发邮件，我们通过一个service来实现：
1import lombok.extern.slf4j.Slf4j; 2import org.springframework.beans.factory.annotation.Autowired; 3import org.springframework.beans.factory.annotation.Value; 4import org.springframework.mail.SimpleMailMessage; 5import org.springframework.mail.javamail.JavaMailSender; 6import org.springframework.scheduling.annotation.Async; 7import org.springframework.stereotype.Service; 8 9@Slf4j 10@Service 11public class MailService { 12 13 @Autowired 14 JavaMailSender javaMailSender; 15 16 @Value("${mail.from}") 17 private String mailFrom; 18 19 @Value("${mail.to}") 20 private String mailTo; 21 22 @Async 23 public void sendSimpleMail(String subject, String content) { 24 SimpleMailMessage message = new SimpleMailMessage(); 25 message.setFrom(mailFrom); 26 message.setTo(mailTo); 27 message.setSubject(subject); 28 message.setText(content); 29 30 try { 31 javaMailSender.send(message); 32 log.info("邮件已经发送"); 33 } catch (Exception e) { 34 log.error("发送邮件异常", e); 35 } 36 37 } 38 39}
我们在application.properties文件中配置邮件参数，给mait.to配置多个邮箱，并用分号分隔
1#邮件 2spring.mail.host=smtp.163.com 3spring.mail.username=tangseng2019@163.com 4spring.mail.password=wlf123 5spring.mail.properties.mail.smtp.auth=true 6spring.mail.properties.mail.starttls.required=true 7spring.mail.properties.mail.starttls.enable=true 8spring.mail.default-encoding=UTF-8 9mail.from=${spring.mail.username} 10mail.to=sunwukong2019@126.com;zhubajie2019@126.com
注意spring.mail.password不是邮箱密码，而是授权码，需要在邮箱的“设置”中启用授权码：
调用上面的发送接口sendSimpleMail
问题来了：
12020-01-02 16:29:00.549 |-ERROR [http-nio-9988-exec-6] com.wlf.order.prize.service.MailService [34] -| 发送邮件异常 2org.springframework.mail.MailParseException: Could not parse mail; nested exception is javax.mail.internet.AddressException: Illegal semicolon, not in group in string ``sunwukong2019@126.com;zhubajie2019@126.com'' at position 17 3 at org.springframework.mail.javamail.MimeMailMessage.setTo(MimeMailMessage.java:111) 4 at org.springframework.mail.SimpleMailMessage.copyTo(SimpleMailMessage.java:204) 5 at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:319) 6 at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:311) 7 at com.wlf.order.prize.service.MailService.sendSimpleMail(MailService.java:31) 8 at com.wlf.order.prize.aop.RequestInterceptor.postHandle(RequestInterceptor.java:117) 9 at org.springframework.web.servlet.HandlerExecutionChain.applyPostHandle(HandlerExecutionChain.java:156) 10 at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1046) 11 at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) 12 at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) 13 at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) 14 at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) 15 at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) 16 at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) 17 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) 18 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 19 at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) 20 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) 21 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 22 at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) 23 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:118) 24 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) 25 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 26 at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) 27 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:118) 28 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) 29 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 30 at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) 31 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:118) 32 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) 33 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 34 at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) 35 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:118) 36 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) 37 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 38 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) 39 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) 40 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) 41 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) 42 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) 43 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) 44 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) 45 at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) 46 at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) 47 at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:853) 48 at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1587) 49 at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) 50 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 51 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 52 at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 53 at java.lang.Thread.run(Thread.java:745) 54Caused by: javax.mail.internet.AddressException: Illegal semicolon, not in group 55 at javax.mail.internet.InternetAddress.parse(InternetAddress.java:1045) 56 at javax.mail.internet.InternetAddress.parse(InternetAddress.java:752) 57 at javax.mail.internet.InternetAddress.parse(InternetAddress.java:729) 58 at org.springframework.mail.javamail.MimeMessageHelper.parseAddress(MimeMessageHelper.java:710) 59 at org.springframework.mail.javamail.MimeMessageHelper.setTo(MimeMessageHelper.java:596) 60 at org.springframework.mail.javamail.MimeMailMessage.setTo(MimeMailMessage.java:108) 61 ... 50 common frames omitted 622020-01-02 16:29:00.550 |-DEBUG [http-nio-9988-exec-6] org.springframework.orm.jpa.support.OpenEntityManagerInViewInterceptor [111] -| Closing JPA EntityManager in OpenEntityManagerInViewInterceptor
我们跟进MimeMailMessage类，发现最终死在了InternetAddress手上
非法分号，也就是群发我们不应该调setTo(String to)，而应该是setTo(String... to)，我们需要自己把分号拆分一下，统一起来就是：
自此开始批发邮件了，但问题又来了，邮件服务器开始把你的邮件当垃圾邮件来处理了。详情件spring发邮件被识别为垃圾邮件：org.springframework.mail.MailSendException: Failed messages: com.sun.mail.smtp.SMTPSendFailedException: 554 DT:SPM 163。