Java Project JSP JDBC Java Program Core Java Demo MORE

How to upload file in JSP Java


For upload file in JSP we using 2 files.

  • index.html:for recieve user input.
  • process.jsp:for process the upload file data.

index.html

<!DOCTYPE html>
<html>
<body>
Select a file to upload: <br />
<form action="fileupload.jsp" method="post" enctype="multipart/form-data">
<input type="file" name="file" size="50" />
<br />
<input type="submit" value="Upload File" />
</form>
</body>
</html>

process.jsp

<%@ page import="java.io.*,java.util.*, javax.servlet.*" %>
<%@ page import="javax.servlet.http.*" %>
<%@ page import="org.apache.commons.fileupload.*" %>
<%@ page import="org.apache.commons.fileupload.disk.*" %>
<%@ page import="org.apache.commons.fileupload.servlet.*" %>
<%@ page import="org.apache.commons.io.output.*" %>

<%
  File file ;
  int maxFileSize = 5000 * 1024;
  int maxMemSize = 5000 * 1024;
  String filePath = "c:/apache-tomcat/webapps/data/";

  String contentType = request.getContentType();
  if ((contentType.indexOf("multipart/form-data") >= 0)) {

     DiskFileItemFactory factory = new DiskFileItemFactory();
     factory.setSizeThreshold(maxMemSize);
     factory.setRepository(new File("c:\\temp"));
     ServletFileUpload upload = new ServletFileUpload(factory);
     upload.setSizeMax( maxFileSize );
     try{ 
        List fileItems = upload.parseRequest(request);
        Iterator i = fileItems.iterator();
        while ( i.hasNext () ) 
        {
           FileItem fi = (FileItem)i.next();
           if ( !fi.isFormField () )  {
               String fieldName = fi.getFieldName();
               String fileName = fi.getName();
               boolean isInMemory = fi.isInMemory();
               long sizeInBytes = fi.getSize();
               file = new File( filePath + "yourFileName") ;
               fi.write( file ) ;
               out.println("Uploaded Filename: " + filePath + fileName + "<br>");
           }
        }
        }catch(Exception ex) {
        System.out.println(ex);
     }
  }else{
     out.println("Error in file upload.");
     
  }
%>