java邮件乱码的彻底解决方案

//设置邮件主题 

message.setSubject(MimeUtility.encodeText(mail_subject,MimeUtility.mimeCharset("gb2312"), null)); 

message.setContent(sendmessage, "text/html;charset=gbk"); // 设置邮件格式 

message.setSentDate(new Date()); // 设置邮件发送日期 

//设置邮件发件人名称 

Address address = new InternetAddress(usernames, MimeUtility.encodeText(personalName,MimeUtility.mimeCharset("gb2312"), null));

	@Resource
	private JavaMailSender javaMailSender;
	
	@Test
	public void mimeMailTest() throws MessagingException {
		String email = "xxx-xxx@163.com";
		String mailCode = 123456789;
		// 创建多用途邮件消息对象
		MimeMessage mailMessage = javaMailSender.createMimeMessage();
		// 创建邮件消息助手（参数2：设置为true，表示可以发送超链接、附件）
		MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage, true, "UTF-8");

		messageHelper.setTo("xxx-xxx@163.com");
		messageHelper.setFrom("xxx-xxx@163.com");
		messageHelper.setSubject("注册提醒");

		String text = "注册成功，<a href=\"http://127.0.0.1:8080/userActivate" + "?code=" + mailCode
				+ "&email=" + email + "\">点击激活</a>";
		//参数2表示是否以html格式发送.如不设置会发送纯文本
		messageHelper.setText(text, true);

		javaMailSender.send(mailMessage);
	}

	@Test
	public void mimeMailTest2() throws MessagingException {
		String email = "xxx-xxx@163.com";
		String mailCode = 123456789;
		// 创建多用途邮件消息对象
		MimeMessage mailMessage = javaMailSender.createMimeMessage();
		// 创建邮件消息助手
		MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage);

		messageHelper.setTo("xxx-xxx@163.com");
		messageHelper.setFrom("xxx-xxx@163.com");
		messageHelper.setSubject("注册提醒2");

		String text = "注册成功2，<a href=\"http://127.0.0.1:8080/userActivate" + "?code=" + mailCode
				+ "&email=" + email + "\">点击激活</a>";
		//参数2:以html格式发送
		mailMessage.setContent(text, "text/html;charset=UTF-8");
		
		javaMailSender.send(mailMessage);

	}