为何用Delphi程序写的POST不能下传图片

POST /aa.php HTTP/1.1Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-silverlight, */*Referer: http://116.254.216.83/aa.phpAccept-Language: zh-cnContent-Type: multipart/form-data; boundary=---------------------------7dc38a1d60e20Accept-Encoding: gzip, deflateUser-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)Host: 116.254.216.83Content-Length: 37420Connection: Keep-AliveCache-Control: no-cache-----------------------------7dc38a1d60e20Content-Disposition: form-data; name="upfile"; filename="C:\Documents and Settings\Administrator\妗岄潰\Test\789_3.jpg"Content-Type: image/pjpeg??==================以上是网页提交截取的封包==========================================以下是Delphi程序提交截取的封包========================POST /aa.php HTTP/1.1Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-silverlight, */*Referer: http://116.254.216.83/aa.phpAccept-Language: zh-cnContent-Type: multipart/form-data; boundary=---------------------------7dcbbd440b68Accept-Encoding: gzip, deflateUser-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)Host: 116.254.216.83Connection: Keep-AliveContent-Length: 37630Cache-Control: no-cache---------------------------7dcbbd440b68Content-Disposition: form-data; name="upfile"; filename="D:\Test\789_5.jpg"Content-Type: image/pjpeg??