Spring框架JavaMailSender发送邮件工具类详解

本文实例为大家分享了Spring框架JavaMailSender发送邮件工具类，供大家参考，具体内容如下

需要用到的jar包：

下面是发送工具类代码：

package com.test.email;

import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;

/**
 * @author tlimited
 * @create 2017-08-17 11:38
 **/
public class SendMailUtils {

  // Spring的邮件工具类，实现了MailSender和JavaMailSender接口
  private JavaMailSenderImpl mailSender;

  /**
   * 初始化邮件发送数据
   * @param host 服务器
   * @param username 发送人
   * @param passwd 发送人密码
   */
  public void setInitData(String host,String username,String passwd){
     //创建邮件发送服务器
    mailSender = new JavaMailSenderImpl();
    mailSender.setHost(host);
   // mailSender.setPort(465);
    mailSender.setUsername(username);
    mailSender.setPassword(passwd);
    //加认证机制
    Properties javaMailProperties = new Properties();
    javaMailProperties.put("mail.smtp.auth", true);
    javaMailProperties.put("mail.smtp.starttls.enable", true);
    javaMailProperties.put("mail.smtp.timeout", 5000);
    mailSender.setJavaMailProperties(javaMailProperties);
    System.out.println("初始化邮件发送信息完成");
  }
  /**
   * 发送普通文本
   * @param email 对方邮箱地址
   * @param subject 主题
   * @param text 邮件内容
   */
  public void simpleMailSend(String email,String subject,String text) {
    //创建邮件内容
    SimpleMailMessage message=new SimpleMailMessage();
    message.setFrom(mailSender.getUsername());
    message.setTo(email);
    message.setSubject(subject);
    message.setText(text);
    //发送邮件
    mailSender.send(message);
    System.out.println("发送成功");
  }

  /**
   * 发送附件,支持多附件
   * //使用JavaMail的MimeMessage，支付更加复杂的邮件格式和内容
    //MimeMessages为复杂邮件模板，支持文本、附件、html、图片等。
   * @param email 对方邮箱
   * @param subject 主题
   * @param text 内容
   * @param paths 附件路径，和文件名
   * @throws MessagingException
   */
  public void attachedSend(String email,String subject,String text,Map<String,String> paths) throws MessagingException {

    MimeMessage message = mailSender.createMimeMessage();
    //创建MimeMessageHelper对象，处理MimeMessage的辅助类
    MimeMessageHelper helper = new MimeMessageHelper(message, true);
    //使用辅助类MimeMessage设定参数
    helper.setFrom(mailSender.getUsername());
    helper.setTo(email);
    helper.setSubject(subject);
    helper.setText(text);

    if (paths!=null){
      paths.forEach((k,v)->{
         //加载文件资源，作为附件
         FileSystemResource file = new FileSystemResource(v);
         try {
          //添加附件
           helper.addAttachment(k, file);
        } catch (Exception e) {
          e.printStackTrace();
        }
      });
    }
    //发送邮件
    mailSender.send(message);
    System.out.println("发送成功");
  }

  /**
  * 发送html文件，支持多图片
  * @param email 对方邮箱
  * @param subject 主题
  * @param text 内容
  * @param paths 富文本中添加用到的路径，一般是图片，或者css,js文件
  * @throws MessagingException
  */
  public void richContentSend(String email,String subject,String text,Map<String,String> paths) throws MessagingException {

    MimeMessage message = mailSender.createMimeMessage();
    MimeMessageHelper helper = new MimeMessageHelper(message, true);

    helper.setFrom(mailSender.getUsername());
    helper.setTo(email);
    helper.setSubject(subject);
    //第二个参数true，表示text的内容为html，然后注意<img/>标签，src='cid:file'，'cid'是contentId的缩写，'file'是一个标记，
    //需要在后面的代码中调用MimeMessageHelper的addInline方法替代成文件
    helper.setText(text,true);
    //文件地址相对应src目录
    // ClassPathResource file = new ClassPathResource("logo.png");

    if (paths!=null){
      paths.forEach((k,v)->{
         //文件地址对应系统目录
         FileSystemResource file = new FileSystemResource(v);
         try {
          helper.addInline(k, file);
        } catch (Exception e) {
          e.printStackTrace();
        }
      });
    }
    mailSender.send(message);
    System.out.println("发送成功");
  }

  /**
   * 群发多人，且多附件
   * @param mailto 多人邮件地址
   * @param subject 主题
   * @param text 内容
   * @param filePath 文件路径
   * @throws Exception
   */
  public void sendBatchMailWithFile(String[] emails, String subject, String text, String[] filePath) throws Exception { 

    MimeMessage mimeMessage = mailSender.createMimeMessage();
    MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage, true, "UTF-8");
    messageHelper.setFrom(new InternetAddress(MimeUtility.encodeText(mailSender.getUsername())));
    messageHelper.setSubject(subject);
    if (filePath != null) {
      BodyPart mdp = new MimeBodyPart();// 新建一个存放信件内容的BodyPart对象
      mdp.setContent(text, "text/html;charset=UTF-8");// 给BodyPart对象设置内容和格式/编码方式
      Multipart mm = new MimeMultipart();// 新建一个MimeMultipart对象用来存放BodyPart对象
      mm.addBodyPart(mdp);// 将BodyPart加入到MimeMultipart对象中(可以加入多个BodyPart)
      // 把mm作为消息对象的内容
      MimeBodyPart filePart;
      FileDataSource filedatasource;
      // 逐个加入附件
      for (int j = 0; j < filePath.length; j++) {
        filePart = new MimeBodyPart();
        filedatasource = new FileDataSource(filePath[j]);
        filePart.setDataHandler(new DataHandler(filedatasource));
        try {
          filePart.setFileName(MimeUtility.encodeText(filedatasource.getName()));
        } catch (Exception e) {
          e.printStackTrace();
        }
        mm.addBodyPart(filePart);
      }
      mimeMessage.setContent(mm);
    } else {
      messageHelper.setText(text, true);
    } 

    List<InternetAddress> list = new ArrayList<InternetAddress>();// 不能使用string类型的类型，这样只能发送一个收件人
    for (int i = 0; i < emails.length; i++) {
      list.add(new InternetAddress(emails[i]));
    }
    InternetAddress[] address = list.toArray(new InternetAddress[list.size()]); 

    mimeMessage.setRecipients(Message.RecipientType.TO, address);
    mimeMessage = messageHelper.getMimeMessage(); 

    mailSender.send(mimeMessage);
    System.out.println("发送成功");
  } 

  public static void main(String[] args) throws Exception
  {
    SendMailUtils test = new SendMailUtils();
    //测试发送普通文本
   // test.setInitData("smtp.qq.com","706548532@qq.com","123456");
    test.setInitData("smtp.163.com","1234@163.com","1234");
    test.simpleMailSend("1326624701@qq.com","测试","测试能不能发邮件！！！");

    //测试发送附件
    /* test.setInitData("smtp.163.com","1234@163.com","1234");
    Map<String,String> map = new HashMap<String, String>();
    map.put("test12.xls", "D:\\tomcat8\\apache-tomcat-8.0.29\\test12.xls");
    map.put("wsdl.rar", "D:\\wsdl.rar");
    test.attachedSend("706548532@qq.com","Hello Attachment","This is a mail with attachment",map);
    */

    //测试发送富文本（html文件）
   /* test.setInitData("smtp.163.com","1234@163.com","1234");
    String text = "<body><p style='color:red;'>Hello Html Email</p><img src='cid:file'/></body>";
    Map<String,String> map = new HashMap<String, String>();
    map.put("file", "E:\\1f7827.jpg");
    test.richContentSend("706548532@qq.com","邮件标题",text,map);*/

    //测试群发多人多附件
    test.setInitData("smtp.163.com","1234@163.com","1234");
    String [] address = {"706548532@qq.com","1326624701@qq.com"};
    String [] filePath = {"D:\\tomcat8\\apache-tomcat-8.0.29\\test12.xls", "D:\\wsdl.rar"};
    test.sendBatchMailWithFile(address, "群发多文件", "实时", filePath);
  }

}

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