带附件/密送/抄送的 javaMail 邮件发送 -- java_demo(两种实现方式)

╰半夏微凉° 2022-01-26 02:01 252阅读 0赞

话不多说，上代码--第一种，自己实现的，参考资料

[javaMail 的邮件发送包括了抄送（CC），密送（BCC）采用springBoot][javaMail _CC_BCC_springBoot]

[常用的邮件服务器名称、地址及SSL/非SSL协议端口号][SSL_SSL]

[Java Mail发送邮件（带多个附件）][Java Mail]

引入的依赖为

<dependency>
    			<groupId>com.sun.mail</groupId>
    			<artifactId>javax.mail</artifactId>
    			<version>1.5.4</version>
    		</dependency>

@Test
        public void testEmail() throws Exception {
    
            /** 自己实现的 */
            MailUtil mailUtil = new MailUtil();
    
            List<File> attaches = new ArrayList<File>();
            File attach1 = new File("C:\\Users\\LYIHENG\\Desktop\\工作资料\\邮箱签名.docx");
            File attach2 = new File("C:\\Users\\LYIHENG\\Desktop\\工作资料\\演示文稿1.pptx");
            attaches.add(attach1);
            attaches.add(attach2);
            mailUtil.sendSSLEmailWithCC(CollUtil.newArrayList("13740548@qq.com"),CollUtil.newArrayList("8040824@qq.com"),"测试",
                    "<h1>邮件来自Hutool测试</h1>",CollUtil.newArrayList("timae@163.com"),attaches);
    
        }

package com.fh.hr.web.provider.util;
    
    
    import lombok.Data;
    import lombok.extern.slf4j.Slf4j;
    import org.apache.commons.logging.Log;
    import org.apache.commons.logging.LogFactory;
    import org.springframework.stereotype.Component;
    
    import javax.activation.DataHandler;
    import javax.activation.DataSource;
    import javax.activation.FileDataSource;
    import javax.mail.*;
    import javax.mail.internet.*;
    import java.io.File;
    import java.io.IOException;
    import java.util.*;
    
    @Slf4j
    @Data
    @Component
    //@ConfigurationProperties(prefix="mail.smtp")
    //@PropertySource(value = "classpath:**/mail.properties", ignoreResourceNotFound = true)
    public class MailUtil {
    //    @Value("${mail.smtp.host}")
        private String host ="smtp.qiye.163.com";
    //    @Value("${mail.smtp.port}")
        private String port="25";
    //    @Value("${mail.smtp.SSLport}")
        private String SSLport="25";
    //    @Value("${mail.smtp.starttlsEnable}")
        private String starttlsEnable="true";
    //    @Value("${mail.smtp.auth}")
        private String auth="true";
    //    @Value("${mail.smtp.connectiontimeout}")
        private String connectiontimeout="50000";
    //    @Value("${mail.smtp.account}")
        /**本处的邮箱账号和下面的 nickname 是同一个 */
        private String account="XXXXXXXX@XXXX.com";
    //    @Value("${mail.smtp.password}")
     /**上一行邮箱的密码 */
        private String password="XXXXXXXX";
    //    @Value("${mail.smtp.timeout}")
        private String timeout="5000000";
    
        private  Vector<String> file; // 多个附件
      private String filename; // 附件的文件名
    
        private String nickname ="XXXXXXXX@XXXX.com";//发送者,显示的发件人名字
        protected static Log LOGGER = LogFactory.getLog(MailUtil.class);
    
    
        /**
         *  带cc/bcc(抄送/密送)的邮件发送
         * @param listEmails 邮箱地址
         * @param cc 抄送
         * @param title 主题
         * @param content 正文
         * @param bcc 密送
         * @return
         * @throws Exception
         */
        public boolean sendSSLEmailWithCC(List<String> listEmails, List<String> cc, String title, String content ,List<String> bcc,List<File> attachments) throws Exception {
            LOGGER.info("开始发送邮件，email==>"+listEmails+",title==>"+title);
            Properties props = System.getProperties();
            props.put("mail.smtp.host", host);
            // 指定协议
            props.put("mail.transport.protocol", "smtp");
            props.put("mail.smtp.port", SSLport);
            props.put("mail.smtp.starttls.enable", starttlsEnable);
    
            props.put("mail.smtp.auth", auth);
            props.put("mail.smtp.connectiontimeout", connectiontimeout);
            props.put("mail.smtp.timeout", timeout);
            props.put("mail.smtp.debug", true);
            Transport transport = null;
            Session session = Session.getDefaultInstance(props, null);
            transport = session.getTransport("smtp");
            transport.connect(host, account, password);
            MimeMessage msg = new MimeMessage(session);
            msg.setSentDate(new Date());
    
    
            InternetAddress fromAddress = new InternetAddress(account,nickname);
            msg.setFrom(fromAddress);
            InternetAddress[] toAddress = new InternetAddress[listEmails.size()];
            for(int k = 0;k<listEmails.size();k++){
                String emailAddress = listEmails.get(k);
                new InternetAddress(emailAddress);
                toAddress[k]=new InternetAddress(emailAddress);
            }
            log.debug("当前需要发送邮件的地址信息============>{}"+Arrays.deepToString(toAddress));
            msg.addRecipients(Message.RecipientType.TO, toAddress);
    
            //增加CC功能
            if(cc != null) {
                InternetAddress[] ccAddress = new InternetAddress[cc.size()];
                for(int k = 0;k<cc.size();k++){
                    String emailAddress = cc.get(k);
                    new InternetAddress(emailAddress);
                    ccAddress[k]=new InternetAddress(emailAddress);
                }
                msg.addRecipients(Message.RecipientType.CC, ccAddress);
            }
            //增加BCC功能
            if(bcc != null) {
                InternetAddress[] bccAddress = new InternetAddress[bcc.size()];
                for(int k = 0;k<bcc.size();k++){
                    String emailAddress = bcc.get(k);
                    new InternetAddress(emailAddress);
                    bccAddress[k]=new InternetAddress(emailAddress);
                }
                msg.addRecipients(Message.RecipientType.BCC, bccAddress);
            }
            //设置邮件主题
            msg.setSubject(MimeUtility.encodeText(title,MimeUtility.mimeCharset("UTF-8"), null));
            // 设置邮件格式
            msg.setContent(content, "text/html;charset=UTF-8");
            // 设置邮件发送日期
            msg.setSentDate(new Date());
         if (!CollectionUtils.isEmpty(attachments)) {
             msg = this.listFile(content, attachments, msg);
          }
            transport.sendMessage(msg, msg.getAllRecipients());
            log.info("邮件已发送");
            return true;
        }
    
        public MimeMessage listFile(String content, List<File> attachments, MimeMessage message) throws MessagingException, IOException {
    
            Multipart multipart = new MimeMultipart();
            //邮件正文
            BodyPart contentPart = new MimeBodyPart();
            contentPart.setContent(content, "text/html;charset=utf-8");
            multipart.addBodyPart(contentPart);
            //邮件附件
            if (attachments != null) {
                for (File attachment : attachments) {
                    BodyPart attachmentPart = new MimeBodyPart();
                    DataSource source = new FileDataSource(attachment);
                    attachmentPart.setDataHandler(new DataHandler(source));
                    //避免中文乱码的处理
                    attachmentPart.setFileName(MimeUtility.encodeWord(attachment.getName()));
                    multipart.addBodyPart(attachmentPart);
                }
            }
            message.setContent(multipart);
            //保存邮件
            message.saveChanges();
            return message;
    //        Transport.send(message);
        }
    
        public String toChinese(String text) {
            try {
                text = MimeUtility.encodeText(new String(text.getBytes(), "GB2312"), "GB2312", "B");
            } catch (Exception e) {
                e.printStackTrace();
            }
            return text;
        }
    
    }

\------------------------------------------------------------------------------------------------------------------------------------------------------------------------

好了，一下是另外一种的实现方式,首先要创建一个 mail.setting 的文件，在classpath（在标准Maven项目中为`src/main/resources`）的config目录下新建`mail.setting`文件，最小配置内容如下，在此配置下，smtp服务器和用户名都将通过`from`参数识别：参考---[参考资料][Link 1]

cn.hutool.extra.mail.MailUtil.send(CollUtil.newArrayList("13740519@qq.com"),
                    CollUtil.newArrayList("8040824@qq.com"),
                    CollUtil.newArrayList("timagi@163.com"),
                    "测试主题",
                    "<h1>邮件来自Hutool测试</h1>",
                    true);

# 邮件服务器的SMTP地址，可选，默认为smtp.<发件人邮箱后缀>
    host = smtp.qiye.163.com
    # 邮件服务器的SMTP端口，可选，默认25
    port = 25
    # 发件人（必须正确，否则发送失败）
    from = Tihui@pa.com
    # 用户名，默认为发件人邮箱前缀
    user = Tihui@pa.com
    # 密码（注意，某些邮箱需要为SMTP服务单独设置密码，详情查看相关帮助）
    pass = Lo1313

引入的依赖为

<dependency>
        <groupId>javax.mail</groupId>
        <artifactId>mail</artifactId>
        <version>1.4.7</version>
    </dependency>

[javaMail _CC_BCC_springBoot]: https://blog.csdn.net/qq_28929589/article/details/79221342
[SSL_SSL]: https://blog.csdn.net/qq_25046261/article/details/78982080
[Java Mail]: https://raising.iteye.com/blog/2176060
[Link 1]: https://hutool.cn/docs/#/extra/%E9%82%AE%E4%BB%B6%E5%B7%A5%E5%85%B7-MailUtil