使用Spring的javamail注意的中文问题

使用Spring 的封装的MailSender,确实省事多了!
但在使用中,还是得注意些问题

1.增加验证,否则会报:553 authentication is required 的错误信息
Properties prop = new Properties();
prop.setProperty("mail.smtp.auth", "true");
JavaMailSenderImpl.setJavaMailProperties(prop);

2.当邮件内容是HTML语言时的中文问题:
初始化MimeMessageHelper辅助类时,设置"GBK" encoding!
如:
MimeMessageHelper messageHelp = new MimeMessageHelper(message,true,"GBK");
同时在设置:<META http-equiv=Content-Type content='text/html; charset=GBK'>
如果都设置为"UTF-8",在某些邮件客户端标题是冷僻字时,不能正常显示!

3.邮件附件的中文问题!
spring的文档里面说MimeMessageHelper设置了encoding,同时对title,text,attach产生作用,但还是会出问题:
解决方法:MimeUtility.encodeWord(file.getName());就OK了!

以下是可以运行的代码
SendMailDemo.java

import java.io.File;
import java.io.UnsupportedEncodingException;
import java.util.Properties;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeUtility;

import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;

public class SendMailDemo {
	public  void send163ByMutil() throws MessagingException {
		JavaMailSenderImpl javaMail = new JavaMailSenderImpl();
		javaMail.setHost("smtp.163.com");
		javaMail.setPassword("passowrd");
		javaMail.setUsername("username");
		Properties prop = new Properties();
		prop.setProperty("mail.smtp.auth", "true");		
		javaMail.setJavaMailProperties(prop);
		MimeMessage message = javaMail.createMimeMessage();
		MimeMessageHelper messageHelp = new MimeMessageHelper(message,true,"GBK");
		messageHelp.setFrom("[email protected]");
		messageHelp.setTo("[email protected]");
		messageHelp.setSubject("邮件测试");
		// messageHelp
		String body = "<html><head><META http-equiv=Content-Type content='text/html; charset=GBK'></HEAD><title>test</title></head><body>dear 小燕子 \n ";
		body+="<red>This is Text!</red> pic <img src='cid:a'></img><br>hello<img src='cid:b'></img></body></html>";
		messageHelp.setText(body, true);
		messageHelp.addInline("a", new File("E:/xiezi.jpg"));
		messageHelp.addInline("b", new File("E:/logo.png"));		
		File file=new File("E:/Favorites中文文件.rar");		
		try {
			messageHelp.addAttachment(MimeUtility.encodeWord(file.getName()), file);
		} catch (UnsupportedEncodingException e) {			
			e.printStackTrace();
		}
		javaMail.send(message);
	}
	public static void main(String[] args) throws MessagingException {		
		SendMail send=new SendMail();
		send.send163ByMutil();

	}
}

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