关于字符解码和mime解码
我用java开发了一个程序，它从电子邮件帐户中获取电子邮件信息的主题、发件人、发件人和日期时间。我已经使用 html 解析器和 httpclient 做到了这一点。我有两个问题。
当我解析电子邮件的主题字符串时，有时会收到一些奇怪的字符。例如，如果主题是“Hi Mr. müller”，我收到的主题字符串为“Hi Mr. müller”。如您所见，它没有正确赋予 ü 字符。知道这是什么编码吗？是UTF-8吗？如何解码它以获取原始字符串？
我还通过 pop3 从 yahoo 帐户收到了电子邮件信息，如主题、发件人、收件人、日期时间等。我注意到，当发件人电子邮件 ID 包含 ü 或 ue 时（例如 reva.mü[ email protected]），它的编码方式如下('=?iso-8859-1?Q?=22Reva_M=FCller=22?= ')。知道这是什么编码吗？是mime编码吗？如何在 java 中对其进行解码以获得正确的发件人字符串？
我真的很感激任何帮助......
I have developed a program in java which fetches subject, sender, from and datetime of email information from an email account. I have done that using html parser and httpclient. I have two problems.
When I parse a subject string of the email I get some wiered character sometimes. for e.g. if subject is "Hi Mr. müller", I receive subject string as "Hi Mr. müller". As you can see it's not giving ü character properly. Any idea which encoding is this ? Is it UTF-8 ? How do I decode it to get the original string ?
I have also received email information like subject, sender, receiver, datetime etc. from yahoo account with pop3. In that I have noticed when the sender email id contains ü or ue (for e.g. reva.mü[email protected]), it encodes it like ('=?iso-8859-1?Q?=22Reva_M=FCller=22?= '). Any idea about which encoding is this ? Is it mime encoding ? How do I decode it in java to get correct sender string ?
I would really appreciate any help.....
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您需要阅读 RFC：http://www.ietf.org/rfc/rfc2045.txt< /a>.它将告诉您如何解释这些 = 符号。
请参阅“6.7. 引用可打印内容传输编码”。
还要查找 Content-Type 标头来提示您编码。
You need to read the RFC: http://www.ietf.org/rfc/rfc2045.txt. It will tell you how to interpret those = signs.
See "6.7. Quoted-Printable Content-Transfer-Encoding".
Also look for a Content-Type header to clue you in on the encoding.