一、快速发送邮件
SMTP协议：
SMTP是一个相对简单的基于文本的协议。在其之上指定了一条消息的一个或多个接收者（在大多数情况下被确认是存在的），然后消息文本会被传输。
工作过程:
SMTP协议的工作过程可分为如下3个过程：
(1)建立连接：在这一阶段，SMTP客户请求与服务器的25端口建立一个TCP连接。一旦连接建立，SMTP服务器和客户就开始相互通告自己的域名，同时确认对方的域名。(2)邮件传送：利用命令，SMTP客户将邮件的源地址、目的地址和邮件的具体内容传递给SMTP服务器，SMTP服务器进行相应的响应并接收邮件。(3)连接释放：SMTP客户发出退出命令，服务器在处理命令后进行响应，随后关闭TCP连接。
步骤
1、导入依赖
<!--邮件依赖--><dependency><groupId> org.springframework.boot </groupId><artifactId>spring-boot-starter-mail</artifactId></dependency>
2、配置文件
server.port=8890# JavaMailSender 邮件发送的配置spring.mail.host= #QQ：spring.mail.username=xxx@#授权码spring.mail.password=xxxspring.mail.properties.mail.smtp.auth=truespring.mail.properties.mail.smtp.starttls.enable=truespring.mail.properties.mail.smtp.starttls.required=truespring.mail.default-encoding=UTF-8#eureka.client.serviceUrl.defaultZone=http://47.97.188.93:8761/eureka/#spring.application.name=mail-servermail.sender=xxx@#要和上面的username一致
演示代码
* @description mail配置类**/@Componentpublic class MailMsg {@Value("${mail.sender}")private String mailSender;public String getMailSender() {return mailSender;}public void setMailSender(String mailSender) {this.mailSender = mailSender;}}
* @description 实体类**/public class MailBean implements Serializable {/*** 邮件接收人*/private String recipient;/*** 邮件主题*/private String subject;/*** 邮件内容*/private String content;public String getRecipient() {return recipient;}public void setRecipient(String recipient) {this.recipient = recipient;}public String getSubject() {return subject;}public void setSubject(String subject) {this.subject = subject;}public String getContent() {return content;}public void setContent(String content) {this.content = content;}}
* @description 控制层**/@RestController@RequestMapping(value = "v1/api")public class SendMailTest {@Autowiredprivate MailMsg mailMsg;@Autowiredprivate JavaMailSender mailSender;/*** 发送简单的邮件* @param mailBean* @return* @throws Exception*/@RequestMapping(value = "/sendmail",method = RequestMethod.GET)public String sendSimpleMail(@RequestBody MailBean mailBean) throws Exception {SimpleMailMessage message = new SimpleMailMessage();message.setFrom(mailMsg.getMailSender());message.setTo( mailBean.getRecipient());message.setSubject(" Theme " );message.setText("Hello: how have you been!");mailSender.send( message);return "发送成功！";}/*** 发送HTML格式的邮件* @param mailBean*/@RequestMapping(value = "/sendHtml",method = RequestMethod.GET)public String sendHTMLMail(@RequestBody MailBean mailBean) {MimeMessage mimeMailMessage = null;try {mimeMailMessage = mailSender.createMimeMessage();MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMailMessage, true);mimeMessageHelper.setFrom(mailMsg.getMailSender());mimeMessageHelper.setTo(mailBean.getRecipient());mimeMessageHelper.setSubject(mailBean.getSubject());StringBuilder sb = new StringBuilder();sb.append("<h1>SpirngBoot测试邮件HTML</h1>").append("\"<p style='color:#F00'>你是真的太棒了！</p>");mimeMessageHelper.setText(sb.toString(), true);mailSender.send(mimeMailMessage);} catch (Exception e) {e.printStackTrace();}return "success";}/*** 发送静态文件的邮件（附件）* @param mailBean*/@RequestMapping(value = "/sendAttachment",method = RequestMethod.GET)public String sendAttachmentMail(@RequestBody MailBean mailBean) {MimeMessage mimeMailMessage = null;try {mimeMailMessage = mailSender.createMimeMessage();MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMailMessage, true);mimeMessageHelper.setFrom(mailMsg.getMailSender());mimeMessageHelper.setTo(mailBean.getRecipient());mimeMessageHelper.setSubject(mailBean.getSubject());mimeMessageHelper.setText(mailBean.getContent());//文件路径FileSystemResource file = new FileSystemResource(new File("src/main/resources/static/image/mail.jpg"));mimeMessageHelper.addAttachment("mail.jpg", file);mailSender.send(mimeMailMessage);} catch (Exception e) {e.printStackTrace();}return "success";}}
一般发送邮件/短信都会开启异步任务去处理 所以大家自行使用@EnableAsync注解开启
异步任务开启步骤：/weixin_42083036/article/details/103140051
