问一个Http请求的问题
例如一个Html请求的内容如下(部分)

-----------------------------7d7c2a11075a
Content-Disposition: form-data; name= "__VIEWSTATE "

/wEPDwUKLTIzOTk2OTA2OA9kFgICAw8WAh4HZW5jdHlwZQUTbXVsdGlwYXJ0L2Zvcm0tZGF0YWRkCNBNdxI7mhBGzrRff+ZwRDZwsyI=
-----------------------------7d7c2a11075a
Content-Disposition: form-data; name= "upload_img "; filename= "Z:\ww.txt "
Content-Type: text/plain

我想知道其中7d7c2a11075a代表什么?

[解决办法]
服务器端据此提取各个NAME/VALUE对