Spring实现邮件发送功能

前言：以前都是直接用Java自带的邮件工具发送邮件，现在Spring帮我们做了封装，提供了更好用更简单的发送邮件工具JavaMailSender，关于邮件服务器的设置就不在这里说了，直接去QQ邮箱设置下就好，下面看下主要的步骤： 

步骤一、添加发送邮件相关Maven依赖

    
      org.springframework
      spring-context-support
      4.3.2.RELEASE
    
    
      javax.mail
      mail
      1.4.7
        

步骤二、添加相关Spring配置，创建一个spring-mail.xml（如果是Spring-Boot请无视）,内容如下：

  
  
    
    
    
    
    
    
    
    
    
      
 true
 25000
      
    
  

步骤三、创建具体的邮件发送工具类

@Component
public class EmailSender {
  
  @Autowired
  private JavaMailSender javaMailSender;
  
  private static EmailSender emailSender;
  
  @PostConstruct
  public void init() {
    emailSender = this;
    emailSender.javaMailSender= this.javaMailSender;
  }
  
  
  public static void sendSimpleMessage(String sendFrom, String[] sendTo, String subject, String textcontent) {
    SimpleMailMessage mail = new SimpleMailMessage();
    mail.setFrom(sendFrom);
    mail.setTo(sendTo);
    mail.setSubject(subject);
    mail.setText(textcontent);
    //发送
    emailSender.javaMailSender.send(mail);
  }
  
  
  public static void sendHtmlMessage(String sendFrom, String[] sendTo, String subject, String htmlContent) throws Exception {
    MimeMessage mimeMessage = emailSender.javaMailSender.createMimeMessage(); 
    
    MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage);
    mimeMessageHelper.setFrom(sendFrom);
    mimeMessageHelper.setTo(sendTo);
    mimeMessageHelper.setSubject(subject);
    // true 表示启动HTML格式的邮件 
    mimeMessageHelper.setText(htmlContent, true); 

    // 发送邮件
    emailSender.javaMailSender.send(mimeMessage);
  }
  
}

步骤四、创建单元测试测试发送邮件

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class EmailSenderTest {

  @Test
  public void testSend() throws Exception {
    String sendFrom = "1317492210@qq.com";
    String[] sendTo = {"zhaosheng@hitencent.com"};
    String subject = "Spring自带JavaMailSender发送的HTML邮件";
    StringBuilder htmlContent = new StringBuilder()
 .append("")
 .append("")
 .append("")
 .append("")
 .append("")
 .append("您好!陌生人
")
 .append("")
 .append("");
    
    EmailSender.sendHtmlMessage(sendFrom, sendTo, subject, htmlContent.toString());
    System.out.println("邮件发送成功.");
  }

OK，到这里全部的步骤就结束了，是不是比Java Mail简单方便很多哉，赶紧自己动手试试吧！

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