JSP page/apache The method of passing other parameters while the FileUpload component uploads the file

Spring3.0+apache tomcatv7.0+jdk1.7.0_u45+j2ee1.4 validation passed.

Requirement: When uploading a file using a JSP page, you need to pass the relevant parameters as well.

1, need to set the form to Enctype= "Multipart/form-data" method= "post" parameters;

2, because the URL parameter can not be obtained through request.getparameter (), so in order to let the @RequestMapping set the params="command=upload" condition to take effect, You need to add parameters directly to the action in the form action="Item.do?command=upload";

3. When the controller is processing, use item. Isformfield (),item. GetFieldName (); item. getString () To get the form field property name and parameter;

JAVA class import org.apache.commons.fileupload.DiskFileUpload; import Org.apache.commons.fileupload.FileItem; @RequestMapping (Value = "Item", params = "Command=upload", method = Requestmethod.) POST) Public String Upload (itemactionformform, httpservletrequest request, HttpServletResponse response) throws Exception { String fullfilename =null; Get Real Absolute path String Realpath = request. GetSession (). Getservletcontext () . Getrealpath ("/images"); System. out. println ("realpath=" +Realpath); Diskfileupload Disk =new diskfileupload (); Try { list<fileitem> Files =(list<fileitem>) disk. Parserequest (request) ; for (FileitemItem : files) { //Parse the parameter if (item. Isformfield ()) { System. out. println ("Item.isformfield ()"); String Field =Item. GetFieldName (); if (field ! =null) { if (field. Equalsignorecase ("ItemNo")) { ItemNo = item. getString (); System. out. println ("itemno=" +ItemNo); } } } //Parse the file data fullfilename =item. GetName (); if (fullfilename = =null) { System. out. println ("Fullfilename not existed."); continue; } Retrive the filename from full pathname. String fileName1 =fullfilename. substring (fullfilename . lastIndexOf ("\ \") + 1); File file1 =new file (realpath,fileName1); file1. Getparentfile (). Mkdirs (); file1. CreateNewFile (); InputStream INS =item. getInputStream (); OutputStream ous =new fileoutputstream (file1); Try { byte []buffer = newbyte[1024]; int len = 0; while (len =ins. Read (buffer)) >-1) OUs. Write (buffer, 0,Len); } finally { OUs. Close (); ins. Close (); } } } Catch (Exceptione) { // TODO auto-generated Catch block e. Printstacktrace (); } return "Redirect:item.do"; }

JSP page: < form name = "Itemform" id = " Itemform " Action = "item.do?command=upload" Enctype = "Multipart/form-data" Method = "post" >       < Input type = "hidden" name = "ItemNo" value = " ${item.itemno} " > < input name="Itemfile"type="File"class="Text1"size= "Max" maxlength=">" (Must be. GIF or.jpg file)

JSP page/apache The method of passing other parameters while the FileUpload component uploads the file