使用Java代码发送邮件

向右看齐 2021-09-21 13:54 285阅读 0赞

## **看这个之前，首先确定你拥有了发送邮件的账号以及授权码，（PS：授权码不是密码，是开通pop3服务，可自行百度）** ##

**直接上代码，必要信息有所隐藏，所以请勿照搬，请多看注释！！！多看注释！！！多看注释！！！**

所使用的jar——pom.xml中引用，若不是可以 点击下载——> [程序中使用的jar mail.jar][jar mail.jar] 【完全免费】

<dependency>
          <groupId>com.sun.mail</groupId>
          <artifactId>javax.mail</artifactId>
          <version>1.6.2</version>
        </dependency>

import java.util.Properties;
    import javax.mail.Authenticator;
    import javax.mail.MessagingException;
    import javax.mail.PasswordAuthentication;
    import javax.mail.Session;
    import javax.mail.Transport;
    import javax.mail.internet.AddressException;
    import javax.mail.internet.InternetAddress;
    import javax.mail.internet.MimeMessage;
    import javax.mail.internet.MimeMessage.RecipientType;
    
    
    /**
     * description:容易导错包，需要注意
     * @author 狼芒
     * String receiver:收件人邮箱账号
     * String activationCode：发送的激活码(或者内容)
     */
    
    
    public class SentEmail {
    	public String sentEmail(String receiver,String activationCode) {
    		String result = "success sent to: "+receiver+"\tabout:\t"+activationCode;
    		//  得到session 
    		Properties props = new Properties();
    //		props.setProperty("mail.host", "smtp.163.com");
    		props.setProperty("mail.host", "smtp.qq.com");
    		props.setProperty("mail.smtp.auth", "true");
    
    		props.setProperty("mail.smtp.auth", "true");//开启认证
    		props.setProperty("mail.debug", "true");//启用调试
    		props.setProperty("mail.smtp.timeout", "1000");//设置链接超时
    		props.setProperty("mail.smtp.port", "465");//设置端口
    		props.setProperty("mail.smtp.socketFactory.port", "465");//设置ssl端口
    		props.setProperty("mail.smtp.socketFactory.fallback", "false");
    		props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
    
    		Authenticator auth = new Authenticator() {
    			@Override
    			protected PasswordAuthentication getPasswordAuthentication() {
    //				设置账号以及授权码
     				return new PasswordAuthentication("***账号***", "****授权码***");
    			}
    		};
    		
    		Session session = Session.getInstance(props, auth);
    		
    		/*
    		 * 2、创建MimeMessage
    		 */
    		MimeMessage msg = new MimeMessage(session);
    		try {
    //			设置发件人
    			msg.setFrom(new InternetAddress("***发送人账号**@qq.com","**可以给自己起个别名**"));
    //			设置收件人
    			msg.setRecipients(RecipientType.TO, receiver);
    //			设置抄送---允许围观
    //			msg.setRecipients(RecipientType.CC, "*********@qq.com");
    //			设置暗送---在别人不知道的情况下发送到这里
    //			msg.setRecipients(RecipientType.BCC, "***********@qq.com");
    //			设置标题
    			msg.setSubject("设置副标题");
    //			设置内容
    			msg.setContent(activationCode,"text/html;charset=utf-8");
    			//发送邮件
    			Transport.send(msg);
    		} catch (Exception e) {
    			// TODO Auto-generated catch block
    			result = e.getMessage();
    			e.printStackTrace();
    		}
    		return result;
    	}
    }

[jar mail.jar]: https://download.csdn.net/download/L_fly_J/13626601