JavaMail实现邮件发送
作者:互联网
一、邮件服务器与传输协议
要在网络上实现邮件功能,必须要有专门的邮件服务器。这些邮件服务器类似于现实生活中的邮局,它主要负责接收用户投递过来的邮件,并把邮件投递到邮件接收者的电子邮箱中。
SMTP服务器地址:一般是 smtp.xxx.com,比如163邮箱是smtp.163.com,qq邮箱是smtp.qq.com。
SMTP协议
通常把处理用户smtp请求(邮件发送请求)的服务器称之为SMTP服务器(邮件发送服务器)。
POP3协议
通常把处理用户pop3请求(邮件接收请求)的服务器称之为POP3服务器(邮件接收服务器)。
二、Java发送邮件
代码:
① .yml配置文件
spring:
mail:
host: smtp.163.com
password: TZPVAGGRPGOGYSJS
username: c2483173886@163.com
port:
default-encoding: UTF-8
protocol: smtp
properties:
mail.smtp.auth: true
mail.smtp.starttls.enable: true
mail.smtp.starttls.required: true
mail.smtp.socketFactory.port: 465
mail.smtp.socketFactory.class: javax.net.ssl.SSLSocketFactory
mail.smtp.socketFactory.fallback: false
② .SenEmailController
/**
* @Author: ycw
* @Description: TODO
* @DateTime: 2021/9/13 15:53
**/
@RestController
@Slf4j
@CrossOrigin(allowCredentials = "true")
@RequestMapping("/senMail")
public class SenEmailController {
@Autowired
private UploadDownloadUtils uploadAndDownload;
@Autowired
private ISendEmailService iSendEmailService;
@ApiOperation(value = "邮件")
@RecordLog(value = "发邮件",operateType = 2)
@PostMapping
public R senMail(@RequestParam("email") String email,
@RequestParam("subject") String subject,
@RequestParam("text") String text,
@RequestParam("file") MultipartFile file){
Map<String, Object> map = uploadAndDownload.fileUploads(file);
if(CollectionUtils.isEmpty(map)){
throw new ExException(2001,"附件上传失败!");
}
Boolean senResult = false;
senResult = iSendEmailService.sendAttachmentMail(email,subject,text,map);
if (senResult){
return R.ok();
}
return R.error();
}
}
③ .ISendEmailService
/**
* @Author: ycw
* @Description: TODO
* @DateTime: 2021/9/13 13:16
**/
public interface ISendEmailService {
//简单邮件
boolean sendEmail();
//定时发送带附件邮件
Boolean sendAttachmentMail(Map<String,Object> map);
//发送带附件的复杂的邮件
boolean sendAttachmentMail(String email, String subject ,String text, Map<String,Object> map);
}
④ .ISendEmailService
/**
* @Author: ycw
* @Description: TODO
* @DateTime: 2021/9/13 13:17
**/
@Service
@Slf4j
public class ISendEmailServiceImpl implements ISendEmailService {
@Value("${file.save-file-path}")
private String saveFilePath;
@Value("${spring.mail.username}")
private String fromEmail;
@Autowired
private JavaMailSender mailSender;
//注入spring发送邮件的对象
@Autowired
private JavaMailSender javaMailSender;
@Override
public boolean sendEmail() {
SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
//目标邮箱
simpleMailMessage.setTo("c2483173886@163.com");
simpleMailMessage.setFrom(fromEmail);
//主题
simpleMailMessage.setSubject("测试");
simpleMailMessage.setText("utf-8");
try {
javaMailSender.send(simpleMailMessage); //执行发送
} catch (Exception e) {
return false;
}
return true;
}
@Override
public Boolean sendAttachmentMail(Map<String, Object> map) {
if (!CollectionUtils.isEmpty(map)){
for (Map.Entry entryMap : map.entrySet()) {
try {
//邮件对象
MimeMessage mimeMessage = mailSender.createMimeMessage();
//解决中文名乱码
System.setProperty("mail.mime.splitlongparameters", "false");
//邮件处理对象
MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true, "utf-8");
//发件人
helper.setFrom(fromEmail);
//收件人
helper.setTo((String) entryMap.getKey());
//主题
helper.setSubject("hello!");
//文本内容
helper.setText("当月经营指导书和报表!", false);
//设置文件资源
helper.addAttachment((String) entryMap.getValue(), new File(saveFilePath+entryMap.getValue()));
//发送
mailSender.send(mimeMessage);
log.info("单附件邮件发送成功!");
} catch (MessagingException e) {
log.error("单附件邮件发送失败:{}", e);
continue;
}
}
return true;
}
return false;
}
@Override
public boolean sendAttachmentMail(String email, String subject ,String text, Map<String,Object> map){
String saveFilePath = "saveFilePath";
String fileName = "fileName";
try {
//邮件对象
MimeMessage mimeMessage = mailSender.createMimeMessage();
//解决中文名乱码
System.setProperty("mail.mime.splitlongparameters", "false");
//邮件处理对象
MimeMessageHelper helper = new MimeMessageHelper(mimeMessage,true,"utf-8");
//发件人
helper.setFrom(fromEmail);
//收件人
helper.setTo(email);
//主题
helper.setSubject(subject);
//文本内容
helper.setText(text,false);
//设置文件资源
helper.addAttachment((String) map.get(fileName), new File((String) map.get(saveFilePath)));
System.out.println(fileName);
//发送
mailSender.send(mimeMessage);
log.info("【单附件邮件发送成功】收件人:{} 主题:{} 文本内容:{} 文件路径:{}",email,text,text);
} catch (MessagingException e) {
log.error("单附件邮件发送失败:{}",e);
return false;
}
return true;
}
}
标签:map,String,helper,smtp,发送,JavaMail,mail,邮件 来源: https://blog.csdn.net/weixin_45476233/article/details/120431850