springboot邮件发送给多人 springboot email

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gjnet 2024-04-03 07:10:50

文章标签 springboot邮件发送给多人 java spring 后端 html 文章分类 架构后端开发

前言

1. 开启邮箱POP3/SMTP服务

登录qq邮箱后，点击左上方的设置，选择账户，如下图。

springboot邮件发送给多人 springboot email_后端

然后一直往下滑，看到如下图的POP3/SMTP服务，点击开启，会让帮定的密保手机号发个[短信]到指定号码，然后会收到一个授权码，这个授权码在appliction.properties配置中会用到，一定要好好保存，开启后如下图

springboot邮件发送给多人 springboot email_springboot邮件发送给多人_02

2. springboot项目添加依赖

创建springboot项目，添加email依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-mail</artifactId>
</dependency>
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我的依赖如下：

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

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-configuration-processor</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>cn.hutool</groupId>
        <artifactId>hutool-all</artifactId>
        <version>5.5.3</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.8.2</version>
    </dependency>

    <!-- 模板引擎,发送模板邮件用到 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>

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

</dependencies>
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3. 配置文件

######qq邮箱########
#协议
spring.mail.protocol=smtp
#邮箱服务器地址
spring.mail.host=smtp.qq.com
#邮箱服务器地址
spring.mail.username=xxx@qq.com
#这里的password不是登录密码，是开启POP3之后设置的客户端授权码
#邮箱密码，开启POP3/SMTP服务时会有给你
spring.mail.password=自己POP3/SMTP服务密码
#编码格式
spring.mail.default-encoding=UTF-8
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true
##默认端口25，使用465端口时，需要添加配置：
spring.mail.port=465
spring.mail.properties.mail.smtp.ssl.enable=true
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4. 邮件服务操作类

springboot引用模块都通常都提供一个xxxTmplate，方便我们开发，我们可以封装一个EmailTmplate

package com.ljw.task.config;

import lombok.Getter;
import org.springframework.boot.autoconfigure.mail.MailProperties;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.IContext;

import javax.annotation.Resource;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;

/**
 * @Description: 邮件操作类
 * @Author: jianweil
 * @date: 2021/11/19 15:07
 */
@Service
@Getter
public class EmailTemplate {

    @Resource
    private JavaMailSender javaMailSender;

    @Resource
    private TemplateEngine templateEngine;

    //@Resource
    //private MailProperties mailProperties;

    /**
     * 发送简单文本邮件
     *
     * @param from    发送者邮箱
     * @param to      接受者邮箱
     * @param subject 邮件主题
     * @param text    邮件内容
     */
    public void sendTextMail(String from, String to, String subject, String text) {
        SimpleMailMessage message = new SimpleMailMessage();
        // 发送者
        message.setFrom(from);
        // 接收者
        message.setTo(to);
        //邮件主题
        message.setSubject(subject);
        // 邮件内容
        message.setText(text);
        javaMailSender.send(message);
    }


    /**
     * 发送Html邮件
     *
     * @param from    发送者邮箱
     * @param to      接受者邮箱
     * @param subject 邮件主题
     * @param html    邮件内容 带html标签
     */
    public void sendHtmlMail(String from, String to, String subject, String html) {
        try {
            MimeMessage message = javaMailSender.createMimeMessage();
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(html, true);
            javaMailSender.send(message);
        } catch (MessagingException e) {
            throw new RuntimeException("Messaging  Exception !", e);
        }
    }


    /**
     * 发送附件邮件
     *
     * @param from               发送者邮箱
     * @param to                 接受者邮箱
     * @param subject            邮件主题
     * @param text               邮件内容
     * @param attachmentFilename 附件名称
     * @param file               附件
     */
    public void sendAttachmentMail(String from, String to, String subject, String text, String attachmentFilename, FileSystemResource file) {
        MimeMessage message = javaMailSender.createMimeMessage();
        try {
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(text);
            //加入邮件
            helper.addAttachment(attachmentFilename, file);
            javaMailSender.send(message);
        } catch (MessagingException e) {
            throw new RuntimeException("Messaging  Exception !", e);
        }
    }

    /**
     * 发送内联资源邮件
     *
     * @param from      发送者邮箱
     * @param to        接受者邮箱
     * @param subject   邮件主题
     * @param text      邮件内容，包含内联文件id 如： String text = "<html><body>宫崎骏电影图片：<img src='cid:" + contentId + "' ></body></html>";
     * @param contentId 内联文件id
     * @param file      文件
     */
    public void sendInlineResourceMail(String from, String to, String subject, String text, String contentId, FileSystemResource file) {
        MimeMessage message = javaMailSender.createMimeMessage();
        try {
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(text, true);
            helper.addInline(contentId, file);
            javaMailSender.send(message);
        } catch (MessagingException e) {
            throw new RuntimeException("Messaging  Exception !", e);
        }
    }

    /**
     * 发送模板邮件
     *
     * @param from     发送者邮箱
     * @param to       接受者邮箱
     * @param subject  邮件主题
     * @param context  内容类，和模板匹配参数，如下配置id参数的值为myvaluesitest：
     *                 Context context = new Context();
     *                 context.setVariable("id","myvaluesitest");
     * @param template templates目录下的模板文件名，如templates/emailTemplate.html则传：emailTemplate
     */
    public void sendTemplateMail(String from, String to, String subject, IContext context, String template) {
        MimeMessage message = javaMailSender.createMimeMessage();
        try {
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            String text = templateEngine.process(template, context);
            helper.setText(text, true);
            javaMailSender.send(message);
        } catch (MessagingException e) {
            throw new RuntimeException("Messaging  Exception !", e);
        }
    }

}
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5. 测试类

package com.ljw.task.config;

import org.junit.jupiter.api.Test;
import org.springframework.boot.autoconfigure.mail.MailProperties;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.core.io.FileSystemResource;
import org.thymeleaf.context.Context;

import javax.annotation.Resource;
import java.io.File;

/**
 * @Description: todo
 * @Author: jianweil
 * @date: 2021/11/21 18:45
 */
@SpringBootTest
class EmailTemplateTest {

    @Resource
    private EmailTemplate emailTemplate;
    @Resource
    private MailProperties mailProperties;

    public String getSender() {
        return mailProperties.getUsername();
    }

    public String getReceiver() {
        return mailProperties.getUsername();
    }

    /**
     * 文本
     */
    @Test
    void sendTextMail() {
        emailTemplate.sendTextMail(getSender(), getReceiver(), "标题：sendTextMail", "文本内容");
    }

    /**
     * 带html标签
     */
    @Test
    void sendHtmlMail() {
        StringBuffer sb = new StringBuffer();
        sb.append("<h1>大标题-h1</h1>")
                .append("<p style='color:#F00'>红色字</p>")
                .append("<p style='text-align:right'>右对齐</p>");
        emailTemplate.sendHtmlMail(getSender(), getReceiver(), "标题：sendHtmlMail", sb.toString());
    }

    /**
     * 带附件
     */
    @Test
    void sendAttachmentMail() {
        FileSystemResource file = new FileSystemResource(new File("src/main/resources/static/images/avatar.jpg"));
        emailTemplate.sendAttachmentMail(getSender(), getReceiver(), "标题：sendAttachmentMail", "我发了一个附件给你注意查收", "附件名.jpg", file);
    }

    /**
     * 发送内联资源邮件
     */
    @Test
    void sendInlineResourceMail() {
        String imgId = "avatar";
        String content = "<html><body>宫崎骏电影图片：<img src='cid:" + imgId + "' ></body></html>";
        FileSystemResource res = new FileSystemResource(new File("src/main/resources/static/images/avatar.jpg"));
        emailTemplate.sendInlineResourceMail(getSender(), getReceiver(), "标题：sendInlineResourceMail", content, imgId, res);
    }

    /***
     * 发送模板邮件
     */
    @Test
    void sendTemplateMail() {
        Context context = new Context();
        context.setVariable("id", "hello");
        emailTemplate.sendTemplateMail(getSender(), getReceiver(), "标题：sendTemplateMail", context, "helloTemplate");
    }
}
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发送模板邮件用到的模板类：helloTemplate.html

springboot邮件发送给多人 springboot email_html_03

helloTemplate.html：

<!DOCTYPE html>
<html lang="zh" xmlns:th="http://www.thymeleaf.org">
    <head>
        <meta charset="UTF-8"/>
        <title>模板邮件</title>
    </head>
    <body>
        您好,这是模板邮件,请点击下面的链接完成跳转,
        <a href="#" th:href="@{'http://www.baidu.com/s?wd='+${id}}">跳转百度</a> <a th:text=" ${id}"></a>。
    </body>
</html>
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发送附件用到的图片：avatar.jpg

springboot邮件发送给多人 springboot email_spring_04