SpringBoot实现邮件功能是非常的方便快捷的，因为SpringBoot默认有starter实现了Mail。 发送邮件应该是网站的必备功能之一，什么注册验证，忘记密码或者是给用户发送营销信息。 最早期的时候我们会使用JavaMail相关api来写发送邮件的相关代码，后来spring退出了 JavaMailSender更加简化了邮件发送的过程，在之后springboot对此进行了封装就有了 现在的spring-boot-starter-mail。
文章目录
基础配置
引入依赖
Mail配置文件
实现过程
邮件异步发送
基础配置
引入依赖
<dependency>
<groupid>org.springframework.boot/<groupid>
<artifactid>spring-boot-starter-mail/<artifactid>
<dependency>
<groupid>org.springframework.boot/<groupid>
<artifactid>spring-boot-starter-thymeleaf/<artifactid>
QQ邮箱->设置->账户->POP3/SMTP服务:开启服务后会获得QQ的授权码.
Mail配置文件
# JavaMailSender 邮件发送的配置
spring.mail.host: smtp.qq.com
spring.mail.username: 用户qq邮箱
spring.mail.password: 授权码
spring.mail.properties.mail.smtp.auth: true
spring.mail.properties.mail.smtp.starttls.enable: true
spring.mail.properties.mail.smtp.starttls.required: true
spring.mail.default-encoding: UTF-8
163邮箱配置
#邮箱服务器地址
spring.mail.host: smtp.***.cn
#用户名
spring.mail.username: ****@****.cn
#密码
spring.mail.password: *****
spring.mail.default-encoding: UTF-8
spring.mail.sendTo: *****@qq.com
实现过程
@Component
@Slf4j
public class MailServiceImp implements MailService{
@Autowired
private JavaMailSender mailSender;
@Override
public void sendSimpleMail(String from,String to, String subject, String content) {
SimpleMailMessage message = new SimpleMailMessage();
message.setFrom(from);
message.setTo(to);
message.setSubject(subject);
message.setText(content);
try {
mailSender.send(message);
} catch (Exception e) {
log.error(e.getMessage(),e);
}
}
/**
* 发送html邮件
* @param to
* @param subject
* @param content
*/
@Override
public void sendHtmlMail(String from,String to, String subject, String content) {
MimeMessage message = mailSender.createMimeMessage();
try {
//true表示需要创建一个multipart message
MimeMessageHelper helper = new MimeMessageHelper(message, true);
helper.setFrom(from);
helper.setTo(to);
helper.setSubject(subject);
helper.setText(content, true);
mailSender.send(message);
log.info("html邮件发送成功");
} catch (MessagingException e) {
log.error("发送html邮件时发生异常！", e);
}
}
/**
* 发送带附件的邮件
* @param to
* @param subject
* @param content
* @param filePath
*/
public void sendAttachmentsMail(String from,String to, String subject, String content, String filePath){
MimeMessage message = mailSender.createMimeMessage();
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));
String fileName = filePath.substring(filePath.lastIndexOf(File.separator));
helper.addAttachment(fileName, file);
//helper.addAttachment("test"+fileName, file);
mailSender.send(message);
log.info("带附件的邮件已经发送。");
} catch (MessagingException e) {
log.error("发送带附件的邮件时发生异常！", e);
}
}
/**
* 发送正文中有静态资源（图片）的邮件
* @param to
* @param subject
* @param content
* @param rscPath
* @param rscId
*/
public void sendInlineResourceMail(String from,String to, String subject, String content, String rscPath, String rscId){
MimeMessage message = mailSender.createMimeMessage();
try {
MimeMessageHelper helper = new MimeMessageHelper(message, true);
helper.setFrom(from);
helper.setTo(to);
helper.setSubject(subject);
helper.setText(content, true);
FileSystemResource res = new FileSystemResource(new File(rscPath));
helper.addInline(rscId, res);
mailSender.send(message);
log.info("嵌入静态资源的邮件已经发送。");
} catch (MessagingException e) {
log.error("发送嵌入静态资源的邮件时发生异常！", e);
}
}
}
在resorces/templates下创建MailTemplate.html.html
<title>Title/<title>
您好,这是验证邮件,请点击下面的链接完成验证,
发送邮件
@RestController
public class MainController {
@Autowired
private MailService mailService;
@Autowired
private TemplateEngine templateEngine;
@Value("${spring.mail.username}")
private String from;
@Value("${spring.mail.sendTo}")
private String sendTo;
@RequestMapping("/send")
public String send(){
sendSimpleMail();
return "success";
}
public void sendSimpleMail(){
mailService.sendSimpleMail(from,sendTo,"这是一封测试邮件！","这是一封测试邮件！");
}
public void sendHtmlMail() throws Exception {
String content="\\n" +
"
\\n" +"
hello world ! 这是一封html邮件!
\\n" +"\\n" +
"";
mailService.sendHtmlMail(from,sendTo,"test simple mail",content);
}
public void sendAttachmentsMail() {
String filePath="e:\\\\tmp\\\\application.log";
mailService.sendAttachmentsMail(from,sendTo, "主题：带附件的邮件", "有附件，请查收！", filePath);
}
public void sendInlineResourceMail() {
String rscId = "neo006";
String content="
这是有图片的邮件：
"; String imgPath = "C:\\\\Users\\\\summer\\\\Pictures\\\\favicon.png";
mailService.sendInlineResourceMail(from,sendTo,"主题：这是有图片的邮件", content, imgPath, rscId);
}
public void sendTemplateMail() {
//创建邮件正文
Context context = new Context();
context.setVariable("id", "006");
String emailContent = templateEngine.process("MailTemplate", context);
mailService.sendHtmlMail(from,sendTo,"主题：这是模板邮件",emailContent);
}
}
邮件异步发送很多时候邮件发送并不是我们主业务必须关注的结果，比如通知类、提醒类的业务可以允许延时或者失败。这个时候可以采用异步的方式来发送邮件，加快主交易执行速度，在实际项目中可以采用MQ发送邮件相关参数，监听到消息队列之后启动发送邮件
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