HTTP POST request error FileNotFoundException 404

Problem description
Server Interface:
HTTP request method: Post/form
Http://www.iyouchai.com:8888/upload
Input parameters:
File: Upload file name
Username: User Name
return value:
{
Fileid: "85635dee-d326-11e3-a001-00163e0202e9.jpg",
Createtime: "2014-05-03 20:13:48"
}

HTML Test format:

<form action= "/upload/" enctype= "Multipart/form-data" method= "POST" > <input name= "file" type= "file"            ;        <input type= "Submit" value= "Submit" > <input type= "text" name= "username" value= "[email protected]" > </form>

Upload the image code:

/** *  @Description:  todo (with reference, file upload)  *  @param  actionUrl *  @param   params *  @param  files *  @return  result *  @throws  ioexception  */public static string post (string actionurl, map<string, string>  params,map<string, file> files)  throws ioexception {string boundary  = java.util.uuid.randomuuid (). toString (); string prefix =  "--", linend =  "\ r \ n"; string multipart_from_data =  "Multipart/form-data"; string charset =  "UTF-8"; Url uri = new url (ActionURL); httpurlconnection conn =  (HttpURLConnection)  uri.openconnection (); Conn.setReadTimeout (5  * 1000) Conn.setdoinput (true);//  allow input conn.setdooutput (true);//  allow output conn.setusecaches ( False), Conn.setrequestmethod ("POST"),  // post mode Conn.setrequestproperty ("CoNnection ", " keep-alive ") Conn.setrequestproperty (" Charsert ", " UTF-8 "); Conn.setrequestproperty (" Content-type ", multipart_from_data+ "; boundary= " + boundary);//  First, set the parameter Stringbuilder sb = new stringbuilder ();for  (map.entry<string, ) for the type of the spelling text String> entry : params.entryset ())  {sb.append (PREFIX); sb.append (boundary); Sb.append ( Linend); Sb.append ("Content-disposition: form-data; name=\" "+ entry.getkey ()  + " \ ""  + linend); Sb.append ("content-type: text/plain; charset="  + CHARSET +  Linend); Sb.append ("Content-transfer-encoding: 8bit"  + linend); Sb.append (LINEND); Sb.append ( Entry.getvalue ()); Sb.append (linend);} Dataoutputstream outstream = new dataoutputstream (Conn.getoutputstream ()); OutStream.write ( Sb.tostring (). GetBytes ());//  send file Data if  (files != null) for  (map.entry<string,  File> fIle : files.entryset ())  {stringbuilder sb1 = new stringbuilder (); sb1.append (PREFIX); sb1.append (boundary); Sb1.append (linend); Sb1.append ("Content-disposition: form-data; name=\" File\ ";  filename=\" "+ file.getkey ()  + " \ ""  + linend) Sb1.append ("Content-type:  application/octet-stream; charset= "+ charset + linend); Sb1.append (LINEND); o Utstream.write (Sb1.tostring (). GetBytes ()); Inputstream is = new fileinputstream ( File.getvalue ()); LOG.I ("File Size",  file.getvalue (). Length ()  +  ""); byte[] buffer = new byte[1024] ;int len = 0;while  ((len = is.read (buffer))  != -1)  { Outstream.write (Buffer, 0, len);} Is.close (); Outstream.write (Linend.getbytes ());}   Request End Flag byte[] end_data =  (prefix + boundary + prefix +  linend). GetBytes (); Outstream.write (end_data); outstrEam.flush ();//  Get Response code Int res = conn.getresponsecode (); LOG.I ("Image upload result", res +  ""); Inputstream in = conn.getinputstream (); I Nputstreamreader isreader = new inputstreamreader (in); Bufferedreader bufreader = new bufferedreader (Isreader); string line = null; string data =  "OK";while  ((Line = bufreader.readline ())  == null) data  += line;if  (res == 200)  {int ch; Stringbuilder sb2 = new stringbuilder ();while  ((Ch = in.read ())  !=  -1)  {sb2.append ((char)  ch);}} Outstream.close (); Conn.disconnect (); return in.tostring ();}

But each return is 404,not found

Do not use the browser to test the interface directly, the interface only supports the Post solution 1
Request address error, please add "/"; http://www.iyouchai.com:8888/upload/
Your method does not provide a GET method. If the path is right, it can be accessed directly using the URL. The result is a blank page, and if the Get method is provided, the display does not allow this method to be used.

HTTP POST request error FileNotFoundException 404