最近我在开发邮件接发组件，在接收邮件的解码这里遇到个奇怪的问题：
在接收附件时，返回的内容显示是以quoted-printable编码的，
但同一个文件以不同的格式保存后再发送，
得到的quoted-printable 解码内容居然不一样，
而且附件用UTF-8格式发送时得到的quoted-printable码我怎么也解不出来
望有大虾能帮小弟解决一下，拜谢。。。。
附件内容：
2006-8-1 15:18:09 “com.zddf.edutimes.src.dbhelper.SQLHelper”的类型初始值设定项引发异常。
Source:WindowsServiceSearchNews
TargetSite:Void AddCollectLog(System.String)
StackTrace: at WindowsServiceSearchNews.SearchNews.AddCollectLog(String message) in c:\application\project\edutimes\web\windowsservicesearchnews\searchnews.cs:line 447
====================================
2006-8-1 15:18:09 “com.zddf.edutimes.src.dbhelper.SQLHelper”的类型初始值设定项引发异常。
Source:WindowsServiceSearchNews
TargetSite:Void AddCollectLog(System.String)
StackTrace: at WindowsServiceSearchNews.SearchNews.AddCollectLog(String message) in c:\application\project\edutimes\web\windowsservicesearchnews\searchnews.cs:line 447
====================================
2006-8-1 15:18:09 “com.zddf.edutimes.src.dbhelper.SQLHelper”的类型初始值设定项引发异常。
Source:WindowsServiceSearchNews
TargetSite:Void AddCollectLog(System.String)
StackTrace: at WindowsServiceSearchNews.SearchNews.ReadSiteUrls() in c:\application\project\edutimes\web\windowsservicesearchnews\searchnews.cs:line 192
at WindowsServiceSearchNews.SearchNews.SearchInfo() in c:\application\project\edutimes\web\windowsservicesearchnews\searchnews.cs:line 33
====================================
用UTF-8格式保存后得到的quoted-printable码:
=EF=BB=BF2006-8-1 15:18:09 ==E2=80=9Ccom.zddf.edutimes.src.dbhelper.SQLHelper=E2=80=9D=E7=9A=84=E7=B1==BB=E5=9E=8B=E5=88=9D=E5=A7=8B=E5=80=BC=E8=AE=BE=E5=AE=9A=E9=A1=B9=E5=BC=95==E5=8F=91=E5=BC=82=E5=B8=B8=E3=80=82Source:WindowsServiceSearchNewsTargetSite:Void AddCollectLog(System.String)StackTrace: at =WindowsServiceSearchNews.SearchNews.AddCollectLog(String message) in =c:\application\project\edutimes\web\windowsservicesearchnews\searchnews.c=s:line 447=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D==3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D2006-8-1 15:18:09 ==E2=80=9Ccom.zddf.edutimes.src.dbhelper.SQLHelper=E2=80=9D=E7=9A=84=E7=B1==BB=E5=9E=8B=E5=88=9D=E5=A7=8B=E5=80=BC=E8=AE=BE=E5=AE=9A=E9=A1=B9=E5=BC=95==E5=8F=91=E5=BC=82=E5=B8=B8=E3=80=82Source:WindowsServiceSearchNewsTargetSite:Void AddCollectLog(System.String)StackTrace: at =WindowsServiceSearchNews.SearchNews.AddCollectLog(String message) in =c:\application\project\edutimes\web\windowsservicesearchnews\searchnews.c=s:line 447=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D==3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D2006-8-1 15:18:09 ==E2=80=9Ccom.zddf.edutimes.src.dbhelper.SQLHelper=E2=80=9D=E7=9A=84=E7=B1==BB=E5=9E=8B=E5=88=9D=E5=A7=8B=E5=80=BC=E8=AE=BE=E5=AE=9A=E9=A1=B9=E5=BC=95==E5=8F=91=E5=BC=82=E5=B8=B8=E3=80=82Source:WindowsServiceSearchNewsTargetSite:Void AddCollectLog(System.String)StackTrace: at WindowsServiceSearchNews.SearchNews.ReadSiteUrls() in =c:\application\project\edutimes\web\windowsservicesearchnews\searchnews.c=s:line 192 at WindowsServiceSearchNews.SearchNews.SearchInfo() in =c:\application\project\edutimes\web\windowsservicesearchnews\searchnews.c=s:line 33=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D==3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D