基于SpringBoot实现发送带附件的邮件

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

package com.ykmimi.job.service;import org.springframework.stereotype.Service;import java.util.Map;@Servicepublic interface MailService {  /**   * TODO 发送带附件的邮件 , 需要进行重载方法   */  Map<String, Object> sendAttachmentsMail(String to, String subject, String content, String filePath);}

package com.ykmimi.job.service.impl;import com.ykmimi.job.service.MailService;import org.springframework.beans.factory.annotation.Value;import org.springframework.mail.javamail.JavaMailSender;import org.springframework.mail.javamail.MimeMessageHelper;import org.springframework.stereotype.Service;import org.springframework.util.ResourceUtils;import javax.annotation.Resource;import javax.mail.MessagingException;import javax.mail.internet.MimeMessage;import java.io.File;import java.io.FileNotFoundException;import java.util.HashMap;import java.util.Map;@Servicepublic class MailServiceImpl implements MailService {  @Resource  private JavaMailSender mailSender;  //发送者  @Value("${mail.fromMail.addr}")  private String from;  //TODO 设置发送邮件重载方式  @Override  public Map<String, Object> sendAttachmentsMail(String to, String subject, String content, String filePath) {    System.out.println("in sendAttachmentsMail");    System.out.println(filePath);    MimeMessage message = mailSender.createMimeMessage();    Map<String, Object> map = new HashMap<>();    try {      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));      // 发送附件      File file = new File(filePath);      file = ResourceUtils.getFile(file.getAbsolutePath());      String fileName = filePath.substring(filePath.lastIndexOf(File.separator));//      String fileName = filePath.substring(filePath.lastIndexOf("/"));//      String fileName = "附件";      System.out.println(fileName);      //添加多个附件可以使用多条 helper.addAttachment(fileName,file);      //helper.addAttachment(fileName,file);      helper.addAttachment(fileName, file);      mailSender.send(message);      map.put("code", 1);      map.put("message", "发送成功");      return map;    } catch (MessagingException e) {      e.printStackTrace();      map.put("code",0);      map.put("message","发送失败");      return map;    } catch (FileNotFoundException e) {      e.printStackTrace();      map.put("code",-1);      map.put("message","没有文件");      return map;    } finally {    }  }}

##上传文件限制大小spring.servlet.multipart.max-file-size=10MBspring.servlet.multipart.max-request-size=10MB##发送email设置spring.application.name=spring-boot-mailspring.mail.host=smtp.126.comspring.mail.username=hostinbj@126.comspring.mail.password=1314520jyspring.mail.default-encoding=UTF-8##邮件主机地址mail.fromMail.addr=hostinbj@126.comspring.mail.properties.mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory#邮件端口spring.mail.properties.mail.smtp.socketFactory.port=465spring.mail.properties.mail.smtp.auth=truespring.mail.properties.mail.smtp.starttls.enable=truespring.mail.properties.mail.smtp.starttls.required=true