Spring Boot发送邮件
本文环境 jdk 1.8 maven 3.6.1 Spring Boot 2.1.6 引入依赖 pom.xml <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-mail</artifactId> </dependency> 在application.properties中添加邮件配置(以QQ邮箱为例) spring.mail.host=smtp.qq.com spring.mail.port=587 spring.mail.username=xxx@qq.com 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 mail.fromMail.addr=xxx@qq.com #发送来源，和账户相同 QQ邮箱的服务器端口 接收邮件服务器：imap.qq.com，使用SSL，端口号993 发送邮件服务器：smtp.qq.com，使用SSL，端口号465或587 QQ邮箱帮助中心 编写Service接口 public interface MailService { public void sendSimpleMail(String to,String subject,String content); public void sendHtmlMail(String to, String subject, String content); public void sendAttachmentsMail(String to, String subject, String content, String filePath); } } 编写Service的实现类 import java.io.File; import javax.mail.MessagingException; import javax.mail.internet.MimeMessage; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.core.io.FileSystemResource; import org.springframework.mail.SimpleMailMessage; import org.springframework.mail.javamail.JavaMailSender; import org.springframework.mail.javamail.MimeMessageHelper; import org.springframework.stereotype.Component; @Component public class MailServiceImpl implements MailService{ private final Logger logger = LoggerFactory.getLogger(this.getClass()); @Autowired private JavaMailSender mailSender; @Value("${mail.fromMail.addr}") private String from; @Override public void sendSimpleMail(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); logger.info("简单邮件已经发送"); } catch (Exception e) { logger.error("发送简单邮件时发生异常!",e); } } @Override public void sendHtmlMail(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); logger.info("html邮件发送成功"); } catch (MessagingException e) { logger.error("发送html邮件时发生异常！", e); } } @Override public void sendAttachmentsMail(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); mailSender.send(message); logger.info("带附件的邮件已经发送。"); } catch (MessagingException e) { logger.error("发送带附件的邮件时发生异常！", e); } } } 编写测试类 import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.junit4.SpringRunner; import com.boot.service.MailService; @RunWith(SpringRunner.class) @SpringBootTest public class MailTest { @Autowired private MailService mailService; @Test public void testSimple() { mailService.sendSimpleMail("xxx@163.com", "test simple mail", "hello this is simple mail"); } @Test public void testHtmlMail() throws Exception { String content="<html>\n" + "<body>\n" + " <h3>hello world ! 这是一封Html邮件!</h3>\n" + "</body>\n" + "</html>"; mailService.sendHtmlMail("xxx@163.com","test simple mail",content); } @Test public void sendAttachmentsMail() { String filePath="D:\\testMail.txt"; mailService.sendAttachmentsMail("xxx@163.com", "主题：带附件的邮件", "有附件，请查收！", filePath); } } 至此，邮件发送成功! ...