很多朋友都使用过JavaMail进行邮件发送,在邮件正文中的乱码容易解决。但邮件主题的乱码无论怎样转码总是显示一堆乱码。到底应该怎么处理呢? JavaMail中的邮件主题需要进行BASE64编码,
格式形如: =?GB2312?B?xPq1xMPcwuvS0b6t1tjWw6Osx+u+ob/stcfCvKOssqLQ3rjEw9zC66Oh?=
所以,直接使用msg.setSubject("中文主题"),或者msg.setSubject("中文主题".getBytes("8859_1"), "GB2312"))都一样会出现乱码。
在设置邮件主题前需要将主题字串的字节编码为BASE64格式,并添加编码头,示例代码如下:
try{ String subject = "中华全国helloworld"; String content = "测试邮件中语言问题.helloworld"; Context ctx = new InitialContext(); if(ctx == null) throw new Exception("NO Context()"); System.out.println(ctx);
javax.mail.Session mailsession = (javax.mail.Session)ctx.lookup("java:comp/env/mail/session"); System.out.println(mailsession);
Message msg = new MimeMessage(mailsession);
InternetAddress[] toAddrs = InternetAddress.parse("[email protected]",false); msg.setRecipients(Message.RecipientType.TO, toAddrs); //msg.setSubject("=?GB2312?B?"+Base64.encode(subject.getBytes())+"?=");
//将中文转化为GB2312编码 subject = StringUtil.getString(subject, "GB2312"); subject = new String(Base64.encode((subject).getBytes())); msg.setSubject("=?GB2312?B?" + subject + "?=");
msg.setFrom(new InternetAddress("[email protected]")); msg.setText(StringUtil.getString(content,"GB2312")); // Transport t = mailsession.getTransport("smtp"); t.send(msg); out.println("成功"); //Transport.send(msg); }catch(Exception e){ out.println("失败"); System.out.println(e); }
如果有什么问题,请联系:[email protected]
出处:http://http://www.bcxy.com/java/cnmailsubject.htm 
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