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<%--
This script's using Apache Commons Fileupload library (which require Apache Commons IO)
to parse request, they can be downloaded from:
commons-io: http://commons.apache.org/downloads/download_io.cgi
commons-fileupload: http://commons.apache.org/downloads/download_fileupload.cgi
See documentation of your web server to get an information about where you should place this libraries.
Ex. TomCat:
"For classes and resources specific to a particular web application, place unpacked classes and resources
under /WEB-INF/classes of your web application archive, or place JAR files containing those classes and resources
under /WEB-INF/lib of your web application archive."
--%>
<%--
Include required libraries and java classes:
--%>
<%@ page import="org.apache.commons.fileupload.servlet.ServletFileUpload" %>
<%@ page import="org.apache.commons.fileupload.FileItem" %>
<%@ page import="org.apache.commons.fileupload.disk.DiskFileItemFactory" %>
<%@ page import="java.util.List" %>
<%@ page import="java.util.Iterator" %>
<%@ page import="java.io.File" %>
<%@ page import="java.io.IOException" %>
<%@ page import="java.io.PrintWriter"%>
<%@ page import="java.io.InputStream" %>
<%@ page import="java.io.OutputStream" %>
<%@ page import="java.net.URLDecoder" %>
<%@ page import="java.io.FileOutputStream" %>
<%@ page import="java.io.FileInputStream" %>
<%!
String openTag = "";
String closeTag = "";
InputStream ips = null;
FileOutputStream fos = null;
%>
<%!
/**
* Use this handler to perform post upload actions
* $fileName contain only name of uploaded file
* $filePath conatin full path to uploaded file on your server
*/
void uploadCompleteHandler(String fileName, String filePath)
{
}
%>
<%
/*
//Uncomment this block of code to enable cross domain scripting (if files uploaded from another domain).
response.setHeader("Access-Control-Allow-Origin","*");
if(request.getMethod().toLowerCase().equals("options"))
{
response.setHeader("Access-Control-Allow-Methods","GET, POST, OPTIONS");
response.setHeader("Access-Control-Allow-Headers",request.getHeader("Access-Control-Request-Headers"));
return;
}
*/
//destination folder for uploaded files
String uploadDir = application.getRealPath(request.getServletPath());
uploadDir = (new java.io.File(uploadDir)).getParent()+"\\UploadedFiles\\";
//First part is for regulart multipart upload mode.
if (IsNullOrEmpty(GetFieldValue("chunkedUpload", request, null)))
{
ServletFileUpload servletFileUpload = new ServletFileUpload(new DiskFileItemFactory());
try {
List fileItemsList = servletFileUpload.parseRequest(request);
String fileName = IsNullOrEmpty(GetFieldValue("FileName", request, fileItemsList)) ? GetFieldValue("fileName", request, fileItemsList) : GetFieldValue("FileName", request, fileItemsList);
Iterator it = fileItemsList.iterator();
while (it.hasNext())
{
FileItem fileItem = (FileItem)it.next();
if (!fileItem.isFormField())
{
if(IsNullOrEmpty(fileName))
fileName = fileItem.getName();
fileItem.write(new File( uploadDir+"\\"+(new File(fileName).getName())));
out.println("File "+fileName+" was successfully uploaded.");
uploadCompleteHandler(fileName, uploadDir+"\\"+(new File(fileName).getName()));
}
}
}
catch (Exception ex) {
out.println(ex.getMessage());
}
}
//Second part is for chunked upload mode
else
{
ServletFileUpload servletFileUpload = null;
List fileItemsList = null;
try{
servletFileUpload = new ServletFileUpload(new DiskFileItemFactory());
fileItemsList = servletFileUpload.parseRequest(request);
}
catch(Exception e)
{
}
//Used only by JavaPowUpload. determines that empty folder should be created
boolean isEmptyFolder = !IsNullOrEmpty(GetFieldValue("isEmptyFolder", request, fileItemsList));
//type of upload which send request. Each uploader acts individually
String uploaderType = !IsNullOrEmpty(GetFieldValue("uploaderType", request, fileItemsList)) ? GetFieldValue("uploaderType", request, fileItemsList).toLowerCase() : "html5";
if(!IsNullOrEmpty(uploaderType) && uploaderType.equals("drag-and-drop"))
uploaderType = "html5";
//Size of uploaded file
long fileSize = 0L;
if(!IsNullOrEmpty(GetFieldValue("totalSize", request, fileItemsList)))
fileSize = Long.parseLong(GetFieldValue("totalSize", request, fileItemsList));
if(!IsNullOrEmpty(GetFieldValue("FileSize", request, fileItemsList)))
fileSize = Long.parseLong(GetFieldValue("FileSize", request, fileItemsList));
if(!IsNullOrEmpty(GetFieldValue("fileSize", request, fileItemsList)))
fileSize = Long.parseLong(GetFieldValue("fileSize", request, fileItemsList));
//out.println("1 fileSize "+fileSize);
//unique file identifier
String uniqueID = !IsNullOrEmpty(GetFieldValue("FileId", request, fileItemsList)) ? GetFieldValue("FileId", request, fileItemsList) : "";
if(!IsNullOrEmpty(GetFieldValue("fid", request, fileItemsList)))
uniqueID = GetFieldValue("fid", request, fileItemsList);
//Determines if request sent with multiupart encoding
boolean isMultiPart = false;
if(!IsNullOrEmpty(GetFieldValue("isMultiPart", request, fileItemsList)))
isMultiPart = Boolean.parseBoolean(GetFieldValue("isMultiPart", request, fileItemsList));
//Filename may be passed in in parameters with different names.
String fileName = IsNullOrEmpty(GetFieldValue("FileName", request, fileItemsList)) ? GetFieldValue("fileName", request, fileItemsList) : GetFieldValue("FileName", request, fileItemsList);
//Comment and tag fields sent by Silverlight uploader and can be omited here
String fileComment = GetFieldValue("Comment", request, fileItemsList);
String tag = GetFieldValue("Tag", request, fileItemsList);
fileName = fileName != null ? URLDecoder.decode(fileName, "utf8").replace("..\\", "") : "";
if(IsNullOrEmpty(fileName))
return;
//Determines if current request is last or not. Sent by HTML5 and Silverlight uploaders
boolean complete = false;
if(!IsNullOrEmpty(GetFieldValue("Complete", request, fileItemsList)))
complete = Boolean.parseBoolean(GetFieldValue("Complete", request, fileItemsList));
//Determines whether uploader ask for current file size or not
boolean querySize = false;
if(!IsNullOrEmpty(GetFieldValue("QuerySize", request, fileItemsList)))
querySize = Boolean.parseBoolean(GetFieldValue("QuerySize", request, fileItemsList));
if(!IsNullOrEmpty(GetFieldValue("action", request, fileItemsList)))//$uploaderType != "silverlight" && $uploaderType != "html5")
querySize = GetFieldValue("action", request, fileItemsList).equalsIgnoreCase("check");
//Start byte - byte from whiich we should start write data into file. Sent by Silverlight uploader
long startByte = 0;
if(!IsNullOrEmpty(GetFieldValue("StartByte", request, fileItemsList)))
startByte = Long.parseLong(GetFieldValue("StartByte", request, fileItemsList));
/*For Java and Flash based uploaders we should return special xml structure in response */
if(uploaderType.equals("java"))
{
openTag = "<javapowupload>";
closeTag = "</javapowupload>";
}
else if(uploaderType.equals("flash"))
{
openTag = "<multipowupload>";
closeTag = "</multipowupload>";
}
//out.println(tmpFile+"<br>");
out.println(openTag);
//Set your destination directory in variable below
String tmpFile = uploadDir + uniqueID + fileName;
File f = new File(tmpFile);
if (querySize) {
if (!f.exists())
WriteOk("0", uploaderType, out);
else
WriteOk(Long.toString(f.length()), uploaderType, out);
}
else
{
try{
//WriteError("isMultiPart "+isMultiPart, uploaderType, out);
if (isMultiPart)
{
Iterator it = fileItemsList.iterator();
if(!ServletFileUpload.isMultipartContent(request))
{
WriteError("Content expected to be multipart, but it is not.", uploaderType, out);
return;
}
if (!it.hasNext())
{
WriteError("No chunks to save (multipart) .", uploaderType, out);
return;
}
while (it.hasNext())
{
FileItem fileItem = (FileItem)it.next();
if (!fileItem.isFormField())
ips = fileItem.getInputStream();
}
//WriteError("fileItem "+fileItem.getName(), uploaderType, out);
if(ips == null)
WriteError("No chunks to save (multipart) .", uploaderType, out);
}
else
ips = request.getInputStream();
if(ips != null)
ips.skip(0);
// open the temp file for writing (appending if already exists)
FileOutputStream fos = new FileOutputStream(f, f.exists());
// write the content of the inputstream into the file
SaveFile(ips, fos);
fos.flush();
fos.close();
f = new File(tmpFile);
if(!uploaderType.equals("silverlight") && !uploaderType.equals("html5"))
complete = (fileSize > 0 && !querySize) ? f.length() >= fileSize : false;
// check if the file is already complete. If so, rename temp file
if (complete)
{
File dst = new File( uploadDir + "\\"+ fileName);
if(dst.exists())
dst.delete();
//move temp file to destination
f.renameTo(new File( uploadDir + "\\"+ fileName));
WriteResponse("File " + fileName + " was successfully uploaded.", uploaderType, out);
uploadCompleteHandler(fileName, uploadDir + "\\"+ fileName);
}
WriteOk("", uploaderType, out);
}
catch(Exception e)
{
e.printStackTrace(new java.io.PrintWriter(out));
WriteError("exception in chunked "+e.getMessage(), uploaderType, out);
}
finally
{
if(fos != null)
fos.close();
if(ips != null)
ips.close();
}
}
out.println(closeTag);
out.flush();
}
%>
<%!
void SaveFile(InputStream stream, OutputStream fs)
throws IOException
{
byte[] buffer = new byte[40960];
int bytesRead;
while ((bytesRead = stream.read(buffer)) != -1)
fs.write(buffer, 0, bytesRead);
}
//Get value of field from query string parameters or from form
String GetFieldValue(String fieldName, HttpServletRequest request, List fileItemsList)
{
if(fileItemsList != null)
{
Iterator it = fileItemsList.iterator();
while (it.hasNext())
{
FileItem fileItem = (FileItem)it.next();
if (fileItem.isFormField() && fileItem.getFieldName().equals(fieldName))
return fileItem.getString();
}
}
if(!IsNullOrEmpty(request.getParameter(fieldName)))
return request.getParameter(fieldName);
/*if(!IsNullOrEmpty(Request.Form[fieldName]))
return Request.Form[fieldName];*/
return null;
}
//Write error to response stream
void WriteError(String errstr, String uploader, JspWriter out)
throws IOException
{
if(uploader.equalsIgnoreCase("silverlight") || uploader.equalsIgnoreCase("html5"))
out.println("Error: "+errstr);
else
{
out.println("<error message=\""+errstr+"\"/>");
out.println(closeTag);
}
out.flush();
}
//Write OK to response stream
void WriteOk(String size, String uploader, JspWriter out)
throws IOException
{
if(uploader.equalsIgnoreCase("silverlight") || uploader.equalsIgnoreCase("html5"))
out.println(size);
else
if(!IsNullOrEmpty(size))
out.println("<ok size='"+size+"'/>");
else
out.println("<ok/>");
}
//Write response to response stream
void WriteResponse(String response, String uploader, JspWriter out)
throws IOException
{
if(uploader.equalsIgnoreCase("silverlight") || uploader.equalsIgnoreCase("html5"))
out.println(response);
else
out.println("<response> "+response+"</response>");
}
boolean IsNullOrEmpty(String str)
{
return str == null || "".equalsIgnoreCase(str);
}
%>