??wei_shuo的個人主頁

??wei_shuo的學(xué)習(xí)社區(qū)

??Hello World ！

任務(wù)

異步任務(wù)

Java異步指的是在程序執(zhí)行過程中，某些任務(wù)可以在后臺進(jìn)行，而不會阻塞程序的執(zhí)行。通常情況下，Java異步使用線程池來實(shí)現(xiàn)，將任務(wù)放入線程池中，等待線程池中的線程執(zhí)行這些任務(wù)。Java異步可以提高程序的性能和并發(fā)能力，尤其是在處理IO密集型任務(wù)時，可以大大減少等待時間，提高程序的響應(yīng)速度。常見的Java異步實(shí)現(xiàn)方式包括Future、CompletableFuture、RxJava等

• service/AsyncService.java

package com.wei.service;

import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

/**
 * @ClassName AsyncService
 * @Description TODO
 * @Author wei_shuo
 * @Date 2023/5/9 18:30
 * @Version 1.0
 */

@Service
public class AsyncService {
    
    //告訴Spring這是異步方法
    @Async
    public void hello(){
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        System.out.println("數(shù)據(jù)正在處理……");
    }
}

• controller/AsyncController.java

package com.wei.controller;

import com.wei.service.AsyncService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @ClassName AsyncController
 * @Description TODO
 * @Author wei_shuo
 * @Date 2023/5/9 18:33
 * @Version 1.0
 */

@RestController
public class AsyncController {

    @Autowired
    AsyncService asyncService;

    @RequestMapping("/hello")
    public String hello(){
        asyncService.hello();
        return "OK";
    }
}

• SpringbootTestApplication啟動類配置注解

package com.wei;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableAsync;

@SpringBootApplication
//開啟異步注解功能
@EnableAsync
public class SpringbootTestApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringbootTestApplication.class, args);
    }
    
}

郵件任務(wù)

• 導(dǎo)入依賴

     <!--javax.mail-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-mail</artifactId>
        </dependency>

• application.properties

spring.mail.username=1096075493@qq.com
spring.mail.password=cjkglgqynqwabaed
spring.mail.host=smtp.qq.com
#開啟加密驗(yàn)證
spring.mail.properties.mail.smtp.ssl.enable=true

• Test測試

package com.wei;

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;

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

@SpringBootTest
class SpringbootTestApplicationTests {

    @Autowired(required=false)
    JavaMailSenderImpl javaMailSender;

    //簡單郵件
    @Test
    void contextLoads() {
        SimpleMailMessage mailMessage = new SimpleMailMessage();
        //主題
        mailMessage.setSubject("wei_shuo");
        //內(nèi)容
        mailMessage.setText("Hello,World!");
        mailMessage.setFrom("1096075493@qq.com");
        mailMessage.setTo("1096075493@qq.com");
        javaMailSender.send(mailMessage);
    }

    //復(fù)雜郵件
    @Test
    void contextLoads2() throws MessagingException {

        MimeMessage mimeMessage = javaMailSender.createMimeMessage();
        //組裝
        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage,true);
        helper.setSubject("wei_shuo-plus");
        helper.setText("<p style='color:red'>Hello,World-Plus</p>",true);
        //附件
        helper.addAttachment("1.jpg",new File("C:\\Users\\ws199\\Desktop"));
        helper.setFrom("1096075493@qq.com");
        helper.setTo("1096075493@qq.com");
        javaMailSender.send(mimeMessage);
    }

    /**
     *
     * @param html
     * @param subject
     * @param text
     * @throws MessagingException
     */

    //封裝方法
    public void sendMail(Boolean html,String subject,String text) throws MessagingException {
        MimeMessage mimeMessage = javaMailSender.createMimeMessage();
        //組裝
        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage,html);
        helper.setSubject(subject);
        helper.setText(text,true);
        //附件
        helper.addAttachment("1.jpg",new File("C:\\Users\\ws199\\Desktop"));
        helper.setFrom("1096075493@qq.com");
        helper.setTo("1096075493@qq.com");
        javaMailSender.send(mimeMessage);
    }

}

定時任務(wù)

• SpringbootTestApplication.java

package com.wei;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.annotation.EnableScheduling;

@SpringBootApplication
//開啟異步注解功能
@EnableAsync
//開啟定時功能的注解
@EnableScheduling
public class SpringbootTestApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringbootTestApplication.class, args);
    }

}

• ScheduledService.java

package com.wei.service;

import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

/**
 * @ClassName ScheduledService
 * @Description TODO
 * @Author wei_shuo
 * @Date 2023/5/10 18:23
 * @Version 1.0
 */
@Service
public class ScheduledService {
  
    //固定時間,執(zhí)行代碼
    @Scheduled(cron = "0/2 * * * * *")
    public void hello(){
        System.out.println("Hello,你被執(zhí)行了……");
    }
}

?? 結(jié)語：創(chuàng)作不易，如果覺得博主的文章賞心悅目，還請——點(diǎn)贊??收藏??評論??

文章來源地址http://www.zghlxwxcb.cn/news/detail-599585.html

到了這里，關(guān)于SpringBoot原理分析 | 任務(wù)：異步、郵件、定時的文章就介紹完了。如果您還想了解更多內(nèi)容，請在右上角搜索TOY模板網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章，希望大家以后多多支持TOY模板網(wǎng)！