我想打印一个电子邮件到一个文件,我得到的是这个。我怎样才能将消息正文解析为ascii?POP3邮件编码
Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 X-Spam-Status: No, hits=0.2 required=5.0 tests=AWL,NO_REAL_NAME autolearn=no version=2.64 Status: DQpNZXNzYWdlIG1lZXRzIEFsZXJ0IGNvbmRpdGlvbg0KMjAxMC0wOC0xMCAxNTozODoxNiBkZXZp Y2VfaWQ9RkcxMDBBMzkwNzUwNzAwOCBsb2dfaWQ9MDEwNDAzMjAwNSB0eXBlPWV2ZW50IHN1YnR5 cGU9YWRtaW4gcHJpPWFsZXJ0IHVzZXI9InJvb3QiIHVpPVNTSCg0MS4yMzcuMTA2LjI1MCkgYWN0