github地址: https://github.com/showkawa/springBoot_2017/tree/master/spb-demo

1. 異步任務

方法名加上註解@Async,在啟動類上加上@EnableAsync

    @Async
    public void brianAsync(){
        try {
            Thread.sleep(3000);
            brianMail.sendEmail();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println(
 
"異步任務");
    }

2.定時器任務

方法名加上註解@Scheduled,在啟動類上加上@EnableScheduling，最主要的掌握正則表達式的規則

    @Scheduled(cron = "0 * * * * *")
    public void brianScheduling() {
        System.out.println("定時任務");
    }

3.郵件任務

package com.kawa.mail;


import org.springframework.beans.factory.annotation.Autowired;
import
 
 org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import java.io.File;

@Service
public class BrianMail {

    @Autowired
    JavaMailSenderImpl javaMailSender;

    
 
public void sendEmail() {
        MimeMessage mimeMessage = javaMailSender.createMimeMessage();
        try {
            //multipart:true表示開啟附件添加
            MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage, true);
            //郵件設置
            mimeMessageHelper.setSubject("測試郵件");
            mimeMessageHelper.setText("<p style=\"background-color:rgb(255,255,0)\">\n" +
                    "通過 rbg 值設置背景顏色\n" +
                    "</p>\n" +
                    "<p style=\"background-color:rgba(255,255,0,0.25)\">\n" +
                    "通過 rbg 值設置背景顏色\n" +
                    "</p>\n" +
                    "<p style=\"background-color:rgba(255,255,0,0.5)\">\n" +
                    "通過 rbg 值設置背景顏色\n" +
                    "</p>\n" +
                    "<p style=\"background-color:rgba(255,255,0,0.75)\">\n" +
                    "通過 rbg 值設置背景顏色\n" +
                    "</p>",true);
            mimeMessageHelper.setFrom("[email protected]");
            mimeMessageHelper.setTo("[email protected]");
            mimeMessageHelper.setCc("[email protected]");
            //附件
            mimeMessageHelper.addAttachment("10086.jpg",new File("C:\\Users\\HYHGHHHH\\Desktop\\backup\\10086.jpg"));
            javaMailSender.send(mimeMessage);
            System.out.println("郵件發送成功...");
        } catch (MessagingException e) {
            e.printStackTrace();
        }

    }
}

springboot(十一)SpringBoot任務