Javamail 发送附件中文名乱码问题解决

利用Javamail 发送带附件的邮件的时候，发现附件如果是中文名的情况下，即使发送成功，接收方也会出现乱码。这个网上很多相关的处理方法，不过有一些地方不应适合，比如用字符转型或者BASE64Encoder加密，都未必适合本人的实际情况

后来发现用javax.mail.internet.MimeUtility.encodeText()解决了这个附件乱码的问题，部分代码如下

DataSource source = new FileDataSource(filePath);
                    
bodyPart = new MimeBodyPart();

bodyPart.setDataHandler(new DataHandler(source));
//logger.info(MimeUtility.encodeText(fileName));
bodyPart.setFileName(MimeUtility.encodeText(fileName));

multiPart.addBodyPart(bodyPart);

 

 

 

评论

6 楼 grantbb 2011-12-30  

受用，支持！

5 楼 kensunhu 2011-10-28  

for(File attach:attachments){
				//add the attachment to the message helper
				helper.addAttachment( MimeUtility.encodeText( attach.getName() ), 
						attach );
			}

我测试过了，依楼主说的就不会有乱码问题。多谢楼主!

4 楼 lg_asus 2011-03-06  

多謝樓主提供的方法

不過標題亂碼不用這么麻煩吧

剛寫了個測試程序，結果竟然沒有亂碼。

3 楼 Ben.Sin 2010-03-04  

后来找了一段解决标题乱码

/**
	 * Get subject
	 * 
	 * @param message
	 * @return
	 * @throws MailException,
	 *             Exception
	 */
	public String getSubject(Message message) throws MailException, Exception{
		String subject = "";
		String prefix = "";
		int pos = 0;
		
		String[] strMailSubject = message.getHeader("subject");
		
		if (null == strMailSubject){
			logger.info("No suject could be found!");
			subject = "(无标题)";
		}
		else {
			if (strMailSubject[0].indexOf("=?GB_2312-80?") != -1){
				strMailSubject[0].replace("=?GB_2312-80?", "=?GBK?");
			}
			
			try{
                if(strMailSubject[0].toUpperCase().indexOf("=?ISO-8859-1?") != -1){
                	strMailSubject[0] = new String(strMailSubject[0].getBytes("ISO-8859-1"), "UTF-8");  
                }
                else if(strMailSubject[0].toUpperCase().indexOf("=?GB2312?") != -1){ 
                	pos = strMailSubject[0].toUpperCase().indexOf("=?GB2312?");
                	prefix = strMailSubject[0].substring(0, pos);
                	prefix = new String(prefix.getBytes("ISO-8859-1"), "gb2312");
                	
                	strMailSubject[0] = strMailSubject[0].substring(pos);
                	strMailSubject[0] = new String(strMailSubject[0].getBytes("gb2312"), "UTF-8");
                }
                else if(strMailSubject[0].toUpperCase().indexOf("=?GBK?") != -1){
                	pos = strMailSubject[0].toUpperCase().indexOf("=?GBK?");
                	prefix = strMailSubject[0].substring(0, pos);
                	prefix = new String(prefix.getBytes("ISO-8859-1"), "GBK");
                	
                	strMailSubject[0] = strMailSubject[0].substring(pos);
                	strMailSubject[0] = new String(strMailSubject[0].getBytes("GBK"), "UTF-8");  
                }
                else if(strMailSubject[0].toUpperCase().indexOf("=?BIG5?") != -1){
                	pos = strMailSubject[0].toUpperCase().indexOf("=?BIG5?");
                	prefix = strMailSubject[0].substring(0, pos);
                	prefix = new String(prefix.getBytes("ISO-8859-1"), "BIG5");
                	
                	strMailSubject[0] = strMailSubject[0].substring(pos);
                	strMailSubject[0] = new String(strMailSubject[0].getBytes("BIG5"), "UTF-8");
                }
                else{
                	// Normal character:ISO8859_1-->gb2312; subject ISO-8859-1-->gb2312;ISO-8859-1-->GBK;
                	strMailSubject[0] = new String(strMailSubject[0].getBytes("ISO-8859-1"), "UTF-8");  
                }  
                strMailSubject[0] = MimeUtility.decodeText(strMailSubject[0]);
            	strMailSubject[0] = prefix + strMailSubject[0];
			}
			catch(UnsupportedEncodingException unsupportedencodingexception){
                logger.error("UnsupportedEncoding", unsupportedencodingexception);
			}
			
            subject = strMailSubject[0];  
		}
		
        if(null == subject){
        	subject = "";
        }
        
		return subject;
	}

2 楼 imshare 2010-01-05  

轩风之逸 写道

你那样设置还有乱码~~需要这样才不会
mbpFile.setFileName(MimeUtility.encodeText(new String(fds.getName().getBytes(), "GB2312"), "GB2312", "B"));
呵呵~~我测试过了是这样才不会有乱码问题~~

你这样我也测试了，还是乱码

1 楼 轩风之逸 2009-12-11  

你那样设置还有乱码~~需要这样才不会
mbpFile.setFileName(MimeUtility.encodeText(new String(fds.getName().getBytes(), "GB2312"), "GB2312", "B"));
呵呵~~我测试过了是这样才不会有乱码问题~~