关于邮件附件提取的问题

--WC_MAIL_PaRt_BoUnDaRy_05151998
Content-Type: application/octet-stream; file=StdAfx.h
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename=StdAfx.hLy8gc3RkYWZ4LmggOiBpbmNsdWRlIGZpbGUgZm9yIHN0YW5kYXJkIHN5c3RlbSBpbmNsdWRl
IGZpbGVzLA0KLy8gIG9yIHByb2plY3Qgc3BlY2lmaWMgaW5jbHVkZSBmaWxlcyB0aGF0IGFy
ZSB1c2VkIGZyZXF1ZW50bHksIGJ1dA0KLy8gICAgICBhcmUgY2hhbmdlZCBpbmZyZXF1ZW50
bHkNCi8vDQoNCiNkZWZpbmUgVkNfRVhUUkFMRUFOCQkvLyBFeGNsdWRlIHJhcmVseS11c2Vk
IHN0dWZmIGZyb20gV2luZG93cyBoZWFkZXJzDQoNCiNpbmNsdWRlIDxhZnh3aW4uaD4gICAg
ICAgICAvLyBNRkMgY29yZSBhbmQgc3RhbmRhcmQgY29tcG9uZW50cw0KI2luY2x1ZGUgPGFm
eGV4dC5oPiAgICAgICAgIC8vIE1GQyBleHRlbnNpb25zDQojaW5jbHVkZSA8YWZ4dGVtcGwu
aD4JCQkgIC8vIE1GQyB0ZW1wbGF0ZSBjbGFzc2VzDQojaW5jbHVkZSA8YWZ4c29jay5oPiAg
ICAgICAgLy8gTUZDIFNvY2tldHMNCg0KDQoNCg0K--WC_MAIL_PaRt_BoUnDaRy_05151998--请问诸位 怎样将附件提取出来呢