appweb默认把exe放在cgi那个模块里面了，要把他去掉，下面两个exe去掉就能正确下载了。
#
# For CGI scripts, such as your Perl scripts make sure that you have
# "#!/PerlPath" as the first line. This works on Windows as well.
# The .bat and .cmd extensions are really only for Windows.
#
<if CGI_MODULE>
LoadModule cgiHandler libmod_cgi
#
# WARNING: for information about CGI security, read: http://www.w3.org/Security/faq/wwwsf4.html
#
AddHandler cgiHandler exe cgi cgi-nph out bat cmd pl py
ScriptAlias /cgi-bin/ "$DOCUMENT_ROOT/../cgi-bin"
#
# These actions specify the program to run for each Perl or Python
# script. They map to the extensions specified in the mime.types for for
# these mime types. Alternatively, you may use put all your scripts in
# the subdirectories specified by the releavant Route blocks below.
# For perl and python, you can also put "#!/path/to/program" as the first
# line. This works on Windows as well. The .bat and .cmd extensions are
# really only for Windows. For Windows, update the program paths with
# the right paths.
#
Action application/x-appweb-perl /usr/bin/perl
Action application/x-appweb-python /usr/bin/python
Action application/x-appweb-lua /usr/bin/lua
Action application/x-appweb-ruby /usr/bin/ruby
LimitProcesses 10
<else>
AddHandler errorHandler cgi cgi-nph out bat cmd pl py
</if>