Multipartrequest packaging class

This package can be obtained by searching for oreilly multipartrequest. This package class can obtain the field value in the form like a common request.

The servlet entry determines whether the multipart form function is as follows:

Private Boolean ismultipartrequest (httpservletrequest request ){
// Determine whether it is mutilpart/form-Data
String S = NULL;
String S1 = request. getheader ("Content-Type ");
String S2 = request. getcontenttype ();

If (S1 = NULL & S2! = NULL)
S = S2;
Else if (s2 = NULL & S1! = NULL)
S = S1;
Else if (S1! = NULL & S2! = NULL)
S = s1.length () <= s2.length ()? S2: S1;

If (s! = NULL & S. tolowercase (). startswith ("multipart/form-Data ")){
Return true;
}
Else {
Return false;
}
}