Easyui filebox File Upload

@RequestMapping (value = "Savefileupload")
@ResponseBody
Public String savefileupload (httpservletrequest request,string menutree,httpservletresponse response) {
String filename= "";
String doctype= "";
Create a general-purpose multi-part parser
Commonsmultipartresolver multipartresolver = new Commonsmultipartresolver (Request.getsession (). GetServletContext () );
Determine if request has a file upload, that is, multipart requests
if (Multipartresolver.ismultipart (request)) {
Convert to multi-part Request
Multiparthttpservletrequest multirequest = (multiparthttpservletrequest) request;
Get all the file names in request
Iterator<string> iter = Multirequest.getfilenames ();

while (Iter.hasnext ()) {
Get upload file
Multipartfile file = Multirequest.getfile (Iter.next ());
if (file! = null) {
Get the file name of the current upload file
String prinames = File.getoriginalfilename ();
String priname=prinames.substring (0,prinames.indexof ("."));
if (! "". Equals (Priname)) {
Rename the uploaded file name

Excelfile = new File (filepath+ "" +prinames);
DocType = Prinames.substring ((Prinames.lastindexof ("."));
Fileuploadservice.savefile (Priname, FilePath, DocType, Menutree);
try {
File.transferto (Excelfile);
} catch (IllegalStateException e) {
E.printstacktrace ();
} catch (IOException e) {
E.printstacktrace ();
}
}
}
}
}



Return Jsonmapper.getinstance (). ToJson ("Operation succeeded");
}

/*
* File Download
*/
@RequestMapping (value = "Downfile")
@ResponseBody
public void Downfile (String id,httpservletrequest request,httpservletresponse response) {

List<map<string,object>> list=fileuploadservice.downfile (ID);
String filetype=string.valueof (list.get (0). Get ("filetype"));
try{

File File = new file (constant.opload_paht,filename);
Read into the stream
InputStream instream = new FileInputStream (list.get (0). Get ("filecontent") + "" +list.get (0). Get ("filename") + "+" "+ Filetype+ "");//File storage path
Format the output
Response.reset ();
Response.setcontenttype ("bin");
Response.AddHeader ("Content-disposition", "attachment;filename=" + urlencoder.encode (list.get (0). Get ("filename") + FileType, "UTF-8"));
Loop out the data in the stream
Byte[] B = new byte[1000];
int Len;

while (len = Instream.read (b)) > 0)
Response.getoutputstream (). Write (b, 0, Len);
Instream.close ();
} catch (IOException e) {
E.printstacktrace ();
}
}

Easyui filebox File Upload