SpringBoot发送邮件，发送二维码,邮箱验证,图片,Html,附件等

向右看齐 2023-06-22 13:37 92阅读 0赞

### 1、准备工作 ###

以刚刚创建的SpringBoot项目为主：  
以QQ邮箱为例：(其实什么邮箱都差不多)

###### 1.进入qq邮箱设置 ######

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###### 2.找到账户 ######

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzEyMjA5MA_size_16_color_FFFFFF_t_70 1]

###### 3.往下滑，找到pop3服务，点击开启，需要验证，得到授权码 ######

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzEyMjA5MA_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzEyMjA5MA_size_16_color_FFFFFF_t_70 3]

### 2、配置代码 ###

###### 1导入依赖 ######

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzEyMjA5MA_size_16_color_FFFFFF_t_70 4]

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

###### 2.配置配置文件，application.properties（重点） ######

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzEyMjA5MA_size_16_color_FFFFFF_t_70 5]

#host 代表使用什么邮箱, QQ:smtp.qq.com  163:smtp.163.com
    #default-encoding 字符集 默认utf-8
    #username 邮箱账号
    #password 第一步的授权码
    spring.mail.host=smtp.qq.com
    spring.mail.default-encoding=utf-8
    spring.mail.username=xxxx
    spring.mail.password=xxxx

username是填写邮箱账号  
password不是填写密码，是填写第一步的授权码  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzEyMjA5MA_size_16_color_FFFFFF_t_70 3]

###### 3.创建发送邮件实现类接口（重点） ######

复制进去导入包即可  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzEyMjA5MA_size_16_color_FFFFFF_t_70 6]

package com.lj.demo.mail;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.core.io.FileSystemResource;
    import org.springframework.mail.MailException;
    import org.springframework.mail.SimpleMailMessage;
    import org.springframework.mail.javamail.JavaMailSender;
    import org.springframework.mail.javamail.MimeMessageHelper;
    import org.springframework.stereotype.Component;
    
    import javax.mail.MessagingException;
    import javax.mail.internet.MimeMessage;
    import java.io.File;
    
    @Component
    public class MailServiceImpl {
        @Autowired
        private JavaMailSender mailSender;
    
        @Value("${spring.mail.username}")
        private String from;
    
        /**
         * 发送普通文本邮件
         */
        public void sendSimpleMail(String to, String subject, String content) throws MailException {
            SimpleMailMessage message = new SimpleMailMessage();
            message.setFrom(from); // 邮件发送者
            message.setTo(to); // 邮件接受者
            message.setSubject(subject); // 主题
            message.setText(content); // 内容
    
            mailSender.send(message);
        }
    
        /**
         * 发送带图片邮件邮件
         */
        public void sendInlineResourceMail(String to, String subject, String content, String rscPath, String rscId) throws MessagingException {
            MimeMessage message = mailSender.createMimeMessage();
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content, true);
            File file = new File(rscPath);
            FileSystemResource res = new FileSystemResource(file);
            helper.addInline(rscId, res);
    
            mailSender.send(message);
        }
    
        /**
         * 发送HTML邮件
         */
        public void sendHtmlMail(String to, String subject, String content) throws MessagingException {
            MimeMessage message = mailSender.createMimeMessage();
            //true 表⽰示需要创建⼀一个 multipart message
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content, true);
            mailSender.send(message);
    
        }
    
        /**
         * 发送带附件的邮件
         */
        public void sendAttachmentsMail(String to, String subject, String content, String filePath) throws MessagingException {
            MimeMessage message = mailSender.createMimeMessage();
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content, true);
            FileSystemResource file = new FileSystemResource(new File(filePath));
            String fileName = file.getFilename();
            helper.addAttachment(fileName, file);
    
            mailSender.send(message);
    
        }
    
    }

### 接下来我们测试，在测试类中进行测试，实际开发模仿我的示例 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzEyMjA5MA_size_16_color_FFFFFF_t_70 7]

package com.lj.demo;
    
    import com.lj.demo.mail.MailServiceImpl;
    import org.junit.jupiter.api.Test;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    import org.springframework.mail.MailException;
    
    import javax.mail.MessagingException;
    
    @SpringBootTest
    class DemoApplicationTests {
    
        @Autowired
        MailServiceImpl mailService;
    
        /**
         * 普通文本邮件测试
         *
         * @throws Exception
         */
        @Test
        public void test() throws Exception {
            String to = "邮件名@qq.com";
            String subject = "主题";
            String content = "内容";
            try {
                mailService.sendSimpleMail(to, subject, content);
                System.out.println("成功了");
    
            } catch (MailException e) {
                System.out.println("失败了");
                e.printStackTrace();
            }
    
        }
    
    
        /**
         * 带图片的邮件测试
         */
        @Test
        public void test1() {
            String to = "邮件名@163.com";
            String subject = "主题";
            String rscId = "img";
            String content = "<html><body><img width='250px' src=\'cid:" + rscId + "\'></body></html>";
            // 此处为电脑系统路径
            String imgPath = "C:\\Users\\Administrator\\Desktop\\0f819bedc81e4447a79ebc0207a5704e.png";
            try {
                mailService.sendInlineResourceMail(to, subject, content, imgPath, rscId);
                System.out.println("成功了");
            } catch (MessagingException e) {
                System.out.println("失败了");
                e.printStackTrace();
            }
        }
    
    
        /**
         * 带HTML邮件测试
         */
        @Test
        public void test2() {
            String to = "邮件名@qq.com";
            String subject = "主题";
            String content = "<html><head></head><body><h3>哈哈，什么都没有</h3></body></html>";
            try {
                mailService.sendHtmlMail(to, subject, content);
                System.out.println("成功了");
            } catch (MessagingException e) {
                System.out.println("失败了");
                e.printStackTrace();
            }
        }
    
        /**
         * 带附件的邮件测试
         */
        @Test
        public void test3() {
            String to = "邮件名@163.com";
            String subject = "附件的邮件";
            String content = "内容";
            String imgPath = "C:\\Users\\Administrator\\Desktop\\0f819bedc81e4447a79ebc0207a5704e.png";
            try {
                mailService.sendAttachmentsMail(to, subject, content, imgPath);
                System.out.println("成功了");
            } catch (MessagingException e) {
                System.out.println("失败了");
                e.printStackTrace();
            }
        }
    
    
    }

填写好接收的邮箱，全部测试  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzEyMjA5MA_size_16_color_FFFFFF_t_70 8]  
完成

### 有可能您还需要 ###

SpringBoot发送短信验证码：[https://blog.csdn.net/weixin\_43122090/article/details/103555621][https_blog.csdn.net_weixin_43122090_article_details_103555621]  
Java代码生成二维码：[https://blog.csdn.net/weixin\_43122090/article/details/103524097][https_blog.csdn.net_weixin_43122090_article_details_103524097]  
如果需要邮箱发送二维码，可参考我[Java代码生成二维码][https_blog.csdn.net_weixin_43122090_article_details_103524097]配合此文章可实现  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzEyMjA5MA_size_16_color_FFFFFF_t_70 9]

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[https_blog.csdn.net_weixin_43122090_article_details_103555621]: https://blog.csdn.net/weixin_43122090/article/details/103555621
[https_blog.csdn.net_weixin_43122090_article_details_103524097]: https://blog.csdn.net/weixin_43122090/article/details/103524097
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