Java使用代码向指定的邮箱发送邮件

小灰灰 2022-12-06 05:22 159阅读 0赞

package emailTool;
    
    import org.junit.Test;
    import javax.mail.*;
    import javax.mail.internet.InternetAddress;
    import javax.mail.internet.MimeMessage;
    import java.util.Properties;
    import java.util.Scanner;
    
    /**
     * 邮件下发工具类
     */
    public final class MailUtils {
    	private static final String USER = "3052410459@qq.com"; // 发件人称号(邮箱地址)
    	private static final String PASSWORD = "sbsvalbiaztddegf"; // 客户端授权码或登录密码
    
    	/**
    	 * 发送邮件
    	 *
    	 * @param to    收件人邮箱
    	 * @param text  邮件正文
    	 * @param title 标题
    	 */
    	public static boolean sendMail(String to, String text, String title) {
    		try {
    			final Properties props = new Properties();
    			props.put("mail.smtp.auth", "true"); // 邮箱建置
    			props.put("mail.smtp.host", "smtp.qq.com");
    
    			props.put("mail.user", USER); // 发件人账号
    			props.put("mail.password", PASSWORD); // 发件人密码
    
    			// 构建授权信息，用于SMTP进行身份验证
    			Authenticator authenticator = new Authenticator() {
    				@Override
    				protected PasswordAuthentication getPasswordAuthentication() {
    					String userName = props.getProperty("mail.user");
    					String password = props.getProperty("mail.password");
    					return new PasswordAuthentication(userName, password);
    				}
    			};
    
    			// 使用环境属性和授权信息创建邮件会话
    			Session mailSession = Session.getInstance(props, authenticator);
    			MimeMessage message = new MimeMessage(mailSession); // 创建邮件消息
    			String username = props.getProperty("mail.user"); // 设置发件人
    			InternetAddress form = new InternetAddress(username);
    			message.setFrom(form);
    
    			/**
    			 * 设置收件人
    			 */
    			InternetAddress toAddress = new InternetAddress(to);
    			message.setRecipient(Message.RecipientType.TO, toAddress);
    
    			message.setSubject(title); // 设置邮件标题
    			message.setContent(text, "text/html;charset=UTF-8"); // 设置邮件的内容体编码风格
    			Transport.send(message); // 发送邮件
    
    			return true;
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    		return false;
    	}
    
    	/**
    	 * 邮件下发测试
    	 *
    	 * @param args
    	 * @throws Exception
    	 */
    	@Test
    	public void test() {
    		Scanner sc = new Scanner(System.in);
    		System.out.print("标题：");
    		String title = sc.next();
    		System.out.print("收件人：");
    		String recipient = sc.next();
    		System.out.println("邮件编辑：");
    		String content = sc.next();
    		MailUtils.sendMail(recipient, content, title);
    		System.out.println("\n提示：邮件下发成功！");
    		sc.close();
    	}
    
    }