SpringBoot--任务：邮件任务

Posted 2021-07-09 Z && Y

01: 异步任务
02: 定时任务
03: 邮件任务

1. SpringBoot--任务：邮件任务

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1.1 添加依赖（增加邮件支持）

pom.xml

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

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1.2 获取第三方授权码

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1.2.1 登录QQ邮箱

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1.2.2 点击设置

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1.2.3 切换到账户

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1.2.4 开启服务

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1.2.5 验证密保

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1.2.6 成功获取授权码

这是为了不直接暴露QQ密码设置的机制
ljoghujwhbkpbaff

1.2.7 保存更改（左下角）

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1.3 配置邮件信息

application.properties

# qq邮箱
spring.mail.username=[e-mail]
# 刚刚生成的授权码
spring.mail.password=ljoghujwhbkpbaff
# qq邮箱的host
spring.mail.host=smtp.qq.com
#开启加密验证(qq邮箱)
spring.mail.properties.mail.smtp.ssl.enable=true

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1.4 简单邮件发送

直接调用SpringBoot的JavaMailSenderImpl类,使用SimpleMailMessage发送简单邮件

EmaildemoApplicationTests.java

package com.tian.emaildemo;

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;

@SpringBootTest
class EmaildemoApplicationTests {

    @Autowired
    JavaMailSenderImpl mailSender;

    @Test
    void contextLoads() {
        SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
        // 邮件主题
        simpleMailMessage.setSubject("你好");
        // 邮件文本
        simpleMailMessage.setText("Hello world");
        // 接收方
        simpleMailMessage.setTo("[e-mail]");
        // 发送方
        simpleMailMessage.setFrom("[e-mail]");
        // 发送邮件
        mailSender.send(simpleMailMessage);
    }
}

运行结果：

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1.5 复杂邮件发送

调用mailSender.createMimeMessage()并使用MimeMessageHelper配置邮件内容，发送即可，邮件内容后设置为true可以解析html格式的内容

EmaildemoApplicationTests.java

    @Test
    void contextLoads() throws MessagingException {
        SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
        //复杂邮件
        MimeMessage mimeMessage = mailSender.createMimeMessage();
        //组装
        MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage, true);

        mimeMessageHelper.setSubject("复杂邮件");
//        发送文本: html文本
        mimeMessageHelper.setText("<p style='color: orange;'>\\n" +
                "                    海客谈瀛洲，烟涛微茫信难求；<br>\\n" +
                "\\n" +
                "                    越人语天姥，云霞明灭或可睹。<br>\\n" +
                "\\n" +
                "                    天姥连天向天横，势拔五岳掩赤城。<br>\\n" +
                "\\n" +
                "                    天台四万八千丈，对此欲倒东南倾。<br>\\n" +
                "\\n" +
                "                    (四万 一作：一万)我欲因之梦吴越，一夜飞度镜湖月。<br>\\n" +
                "\\n" +
                "                    (度 通：渡)湖月照我影，送我至剡溪。<br>\\n" +
                "\\n" +
                "                    谢公宿处今尚在，渌水荡漾清猿啼。<br>\\n" +
                "                    <br>\\n" +
                "                    脚著谢公屐，身登青云梯。<br>\\n" +
                "\\n" +
                "                    半壁见海日，空中闻天鸡。<br>\\n" +
                "\\n" +
                "                    千岩万转路不定，迷花倚石忽已暝。<br>\\n" +
                "\\n" +
                "                    熊咆龙吟殷岩泉，栗深林兮惊层巅。<br>\\n" +
                "\\n" +
                "                    云青青兮欲雨，水澹澹兮生烟。<br>\\n" +
                "\\n" +
                "                    列缺霹雳，丘峦崩摧。<br>\\n" +
                "                    <br>\\n" +
                "                    洞天石扉，訇然中开。<br>\\n" +
                "\\n" +
                "                    青冥浩荡不见底，日月照耀金银台。<br>\\n" +
                "\\n" +
                "                    霓为衣兮风为马，云之君兮纷纷而来下。<br>\\n" +
                "\\n" +
                "                    虎鼓瑟兮鸾回车，仙之人兮列如麻。<br>\\n" +
                "\\n" +
                "                    忽魂悸以魄动，恍惊起而长嗟。<br>\\n" +
                "                    <br>\\n" +
                "                    惟觉时之枕席，失向来之烟霞。<br>\\n" +
                "\\n" +
                "                    世间行乐亦如此，古来万事东流水。<br>\\n" +
                "\\n" +
                "                    别君去兮何时还？<br>\\n" +
                "\\n" +
                "                    且放白鹿青崖间。<br>\\n" +
                "\\n" +
                "                    须行即骑访名山。<br>\\n" +
                "\\n" +
                "                    安能摧眉折腰事权贵，使我不得开心颜!<br>\\n" +
                "                </p>", true);//true,开启html解析
//         发送图片
        mimeMessageHelper.addAttachment("重庆理工大学夜景.jpg", new File("D:\\\\图片\\\\schoolNight.jpg"));

        mimeMessageHelper.setTo("[e-mail]");
        mimeMessageHelper.setFrom("[e-mail]");
        mailSender.send(mimeMessage);
    }

运行结果：

我不知道为什么：我写的CSS样式在电脑上面不可预见，但是在我的手机QQ邮箱确是可以看见的。欢迎知道的大神告诉我

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1.6 可以把上面复杂发送邮件封装成一个方法

    public void SendMail(Boolean html, String title, String text, File file, String sendTo, String sendFrom) throws MessagingException {
        //复杂邮件
        MimeMessage mimeMessage = mailSender.createMimeMessage();
        //组装
        MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage, true);

        mimeMessageHelper.setSubject(title);
        mimeMessageHelper.setText(text, html);//true,开启html解析
        mimeMessageHelper.addAttachment("1.jpg", file);

        mimeMessageHelper.setTo(sendTo);
        mimeMessageHelper.setFrom(sendFrom);
        mailSender.send(mimeMessage);
    }

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