基于SpringBoot实现定时发送邮件过程解析
前提:
1.Springboot项目
2.引入maven 依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-mail</artifactId> </dependency>
以下代码中涉及到的maven依赖有日志依赖,但是springboot都有集成,不用重新引入依赖
Application(程序入口)
package com.springbootemaildemo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.scheduling.annotation.EnableScheduling; import springfox.documentation.swagger2.annotations.EnableSwagger2; /** * 引入了一个注解@EnableSwagger2来启动swagger注解。(启动该注解使得用在controller中的swagger注解生效, 覆盖的范围由@ComponentScan的配置来指定, * 这里默认指定为根路径”com.springboot”下的所有controller) * 也可以单独写衣swaggerConfigura */ @EnableScheduling //启动定时任务 @EnableSwagger2 //启动swagger注解 @SpringBootApplication public class MailApplication { public static void main(String[] args) { SpringApplication.run(MailApplication.class, args); } }
MailJob(定时任务类)
package com.springbootemaildemo.job; import com.springbootemaildemo.send.SendMail; import com.springbootemaildemo.send.TenSenvenMail; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.scheduling.annotation.EnableScheduling; import org.springframework.scheduling.annotation.Scheduled; import org.springframework.stereotype.Component; import javax.annotation.Resource; @Component @EnableScheduling public class MailJob { private static final Logger logger = LoggerFactory.getLogger(MailJob.class); @Resource SendMail sendMail; @Resource TenSenvenMail tenSenvenMail; //@Scheduled(cron = "0/5 * * * * ?") //或直接指定时间间隔,例如:100秒 // @Scheduled(fixedRate=100000) //早晨7点 @Scheduled(cron = "0 0 7 * * ?") public void sendJob() { String bodyTen = "早安哇,太阳出来啦,记得开心哟"; String bodyWen = "记得开心哟"; logger.info("定时任务开始.........................."); sendMail.sendWen(bodyWen); tenSenvenMail.sendTen(bodyTen); logger.info("定时任务结束.........................."); } }
@EnableScheduling 这个注解是 开启定时任务。
发送邮件代码:
发送普通的邮件(发送邮件类):
package com.springbootemaildemo.send; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Component; import javax.mail.Message; import javax.mail.MessagingException; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; import java.util.Date; import java.util.Properties; @Component public class SendMail { private static final Logger logger = LoggerFactory.getLogger(SendMail.class); public void sendWen(String body) { logger.info("开始发送.................."); String from = "212212@qq.com"; String to = "5456456@qq.com"; String subject = "HAPPY"; String smtpHost = "smtp.qq.com"; Properties props = new Properties(); props.setProperty("mail.transport.protocol", "smtp"); // 使用的协议(JavaMail规范要求) props.setProperty("mail.smtp.host", smtpHost); // 发件人的邮箱的 SMTP服务器地址 props.setProperty("mail.smtp.auth", "true"); // 请求认证,参数名称与具体实现有关 // 创建Session实例对象 Session session = Session.getDefaultInstance(props); // 创建MimeMessage实例对象 MimeMessage message = new MimeMessage(session); // 设置发件人 try { message.setFrom(new InternetAddress(from)); // 设置收件人 message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to)); // 设置发送日期 message.setSentDate(new Date()); // 设置邮件主题 message.setSubject(subject); // 设置纯文本内容的邮件正文 message.setText(body); // 保存并生成最终的邮件内容 message.saveChanges(); // 设置为debug模式, 可以查看详细的发送 log session.setDebug(true); // 获取Transport对象 Transport transport = session.getTransport("smtp"); // 第2个参数需要填写的是QQ邮箱的SMTP的授权码,什么是授权码,它又是如何设置? transport.connect(from, "ipeiquufachheefg"); // 发送,message.getAllRecipients() 获取到的是在创建邮件对象时添加的所有收件人, 抄送人, 密送人 transport.sendMessage(message, message.getAllRecipients()); logger.info("发送完成"); transport.close(); } catch (MessagingException e) { e.printStackTrace(); } } }
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