How to upload files on server folder using jsp

Question

I am trying to upload some images on folder which locates on my server using servlet jsp   Below is my code  which is working on my local machine    import java io     import java util      import javax servlet ServletConfig   import javax servlet ServletException    import javax servlet http HttpServlet    import javax servlet http HttpServletRequest    import javax servlet http HttpServletResponse      import org apache commons fileupload FileItem      import org apache commons fileupload FileUploadException     import org apache commons fileupload disk DiskFileItemFactory     import org apache commons fileupload servlet ServletFileUpload       import org apache commons io output           public class UploadServlet extends HttpServlet      private boolean isMultipart     private String filePath    private int maxFileSize   1000   1024     private int maxMemSize   1000   1024     private File file        public void init          Get the file location where it would be stored    filePath             getServletContext   getInitParameter  file-upload              public void doPost HttpServletRequest request              HttpServletResponse response            throws ServletException  java io IOException        Check that we have a file upload request      isMultipart   ServletFileUpload isMultipartContent request        response setContentType  text html         java io PrintWriter out   response getWriter           if   isMultipart         out println   lt html gt          out println   lt head gt          out println   lt title gt Servlet upload lt  title gt            out println   lt  head gt          out println   lt body gt          out println   lt p gt No file uploaded lt  p gt           out println   lt  body gt          out println   lt  html gt          return              DiskFileItemFactory factory   new DiskFileItemFactory         maximum size that will be stored in memory      factory setSizeThreshold maxMemSize        Location to save data that is larger than maxMemSize       factory setRepository new File   C  Users puneet verma Downloads              Create a new file upload handler       ServletFileUpload upload   new ServletFileUpload factory        maximum file size to be uploaded       upload setSizeMax  maxFileSize          try        Parse the request to get file items       List fileItems   upload parseRequest request         Process the uploaded file items       Iterator i   fileItems iterator          out println   lt html gt          out println   lt head gt          out println   lt title gt Servlet upload lt  title gt            out println   lt  head gt          out println   lt body gt          while   i hasNext                     FileItem fi    FileItem i next         if    fi isFormField                          Get the uploaded file parameters         String fieldName   fi getFieldName            String fileName   fi getName            String contentType   fi getContentType            boolean isInMemory   fi isInMemory            long sizeInBytes   fi getSize               Write the file         if  fileName lastIndexOf        gt   0               file   new File  filePath               fileName substring  fileName lastIndexOf                    else             file   new File  filePath               fileName substring fileName lastIndexOf       1                       fi write  file             out println  Uploaded Filename      fileName     lt br gt                         out println   lt  body gt               out println   lt  html gt           catch Exception ex         System out println ex                              public void doGet HttpServletRequest request                      HttpServletResponse response            throws ServletException  java io IOException               throw new ServletException  GET method used with                 getClass    getName       POST method required                                   Now my jsp code  where i upload file    lt    page language  java  contentType  text html  charset ISO-8859-1  pageEncoding  ISO-8859-1   gt   lt  DOCTYPE html PUBLIC  -  W3C  DTD HTML 4 01 Transitional  EN     http   www w3 org TR html4 loose dtd  gt      lt html gt     lt head gt         lt title gt File Uploading Form lt  title gt        lt  head gt          lt body gt           lt h3 gt File Upload  lt  h3 gt        Select a file to upload   lt br   gt          lt form action  UploadServlet  method  post                      enctype  multipart form-data  gt         lt input type  file  name  file  size  50    gt          lt br   gt       lt input type  submit  value  Upload File    gt          lt  form gt         lt  body gt           lt  html gt    In My web xml file  I ve included path like this          lt context-param gt   lt description gt Location to store uploaded file lt  description gt   lt param-name gt file-upload lt  param-name gt   lt param-value gt      C  Users puneet verma Downloads    lt  param-value gt        lt  context-param gt    I ve used my server path http   grand-shopping com  lt  some folder     but it s not working here at all   Libraries i m using are    commons-fileupload-1 3 jar commons-io-2 2 jar   Can anyone suggest me   how exactly i need to define my server path  in order to upload images successfully

User · Answer

You can only use absolute path http   grand-shopping com  lt  some folder    is not an absolute path   Either you can use a path inside the application which is vurneable or you can use server specific path like in   windows - gt  C  Users puneet verma Downloads  linux - gt   opt Downloads

User · Answer

public class FileUploadExample extends HttpServlet        protected void doPost HttpServletRequest request  HttpServletResponse response                  throws ServletException  IOException               boolean isMultipart   ServletFileUpload isMultipartContent request                if  isMultipart                       Create a factory for disk-based file items                 FileItemFactory factory   new DiskFileItemFactory                        Create a new file upload handler                 ServletFileUpload upload   new ServletFileUpload factory                    try                          Parse the request                     List items   upload parseRequest request                       Iterator iterator   items iterator                        while  iterator hasNext                              FileItem item    FileItem  iterator next                            if   item isFormField                                  String fileName   item getName                                    String root   getServletContext   getRealPath                                   File path   new File root     uploads                                if   path exists                                      boolean status   path mkdirs                                                               File uploadedFile   new File path         fileName                               System out println uploadedFile getAbsolutePath                                 item write uploadedFile                                                                     catch  FileUploadException e                        e printStackTrace                      catch  Exception e                        e printStackTrace

User · Answer

Below code is working on my live server as well as in my own Lapy   Note   Please Create data folder in WebContent and put in any single image or any file jsp or html file    Add jar files     commons-collections-3 1 jar commons-fileupload-1 2 2 jar commons-io-2 1 jar commons-logging-1 0 4 jar  upload jsp       lt    page language  java  contentType  text html  charset ISO-8859-1         pageEncoding  ISO-8859-1   gt   lt  DOCTYPE html PUBLIC  -  W3C  DTD HTML 4 01 Transitional  EN   http   www w3 org TR html4 loose dtd  gt   lt html gt   lt head gt   lt meta http-equiv  Content-Type  content  text html  charset ISO-8859-1  gt   lt title gt File Upload lt  title gt   lt  head gt   lt body gt   lt form method  post  action  UploadServlet  enctype  multipart form-data  gt  Select file to upload   lt input type  file  name  dataFile  id  fileChooser   gt  lt br  gt  lt br  gt   lt input type  submit  value  Upload    gt   lt  form gt   lt  body gt   lt  html gt    UploadServlet java  package com servlet   import java io File  import java io IOException  import java util Iterator  import java util List   import javax servlet ServletException  import javax servlet http HttpServlet  import javax servlet http HttpServletRequest  import javax servlet http HttpServletResponse   import org apache commons fileupload FileItem  import org apache commons fileupload FileUploadException  import org apache commons fileupload disk DiskFileItemFactory  import org apache commons fileupload servlet ServletFileUpload          Servlet implementation class UploadServlet     public class UploadServlet extends HttpServlet       private static final long serialVersionUID   1L       private static final String DATA DIRECTORY    data       private static final int MAX MEMORY SIZE   1024   1024   2      private static final int MAX REQUEST SIZE   1024   1024       protected void doPost HttpServletRequest request  HttpServletResponse response  throws ServletException  IOException               Check that we have a file upload request         boolean isMultipart   ServletFileUpload isMultipartContent request            if   isMultipart                return                        Create a factory for disk-based file items         DiskFileItemFactory factory   new DiskFileItemFactory                Sets the size threshold beyond which files are written directly to            disk          factory setSizeThreshold MAX MEMORY SIZE               Sets the directory used to temporarily store files that are larger            than the configured size threshold  We use temporary directory for            java         factory setRepository new File System getProperty  java io tmpdir                  constructs the folder where uploaded file will be stored         String uploadFolder   getServletContext   getRealPath                       File separator   DATA DIRECTORY              Create a new file upload handler         ServletFileUpload upload   new ServletFileUpload factory               Set overall request size constraint         upload setSizeMax MAX REQUEST SIZE            try                  Parse the request             List items   upload parseRequest request               Iterator iter   items iterator                while  iter hasNext                      FileItem item    FileItem  iter next                     if   item isFormField                          String fileName   new File item getName    getName                        String filePath   uploadFolder   File separator   fileName                      File uploadedFile   new File filePath                       System out println filePath                          saves the file to upload directory                     item write uploadedFile                                                   displays done jsp page after upload finished             getServletContext   getRequestDispatcher   done jsp   forward                      request  response              catch  FileUploadException ex                throw new ServletException ex             catch  Exception ex                throw new ServletException ex                         web xml     lt servlet gt       lt description gt  lt  description gt       lt display-name gt UploadServlet lt  display-name gt       lt servlet-name gt UploadServlet lt  servlet-name gt       lt servlet-class gt com servlet UploadServlet lt  servlet-class gt     lt  servlet gt     lt servlet-mapping gt       lt servlet-name gt UploadServlet lt  servlet-name gt       lt url-pattern gt  UploadServlet lt  url-pattern gt     lt  servlet-mapping gt    done jsp   lt    page language  java  contentType  text html  charset ISO-8859-1     pageEncoding  ISO-8859-1   gt   lt  DOCTYPE html PUBLIC  -  W3C  DTD HTML 4 01 Transitional  EN   http   www w3 org TR html4 loose dtd  gt   lt html gt   lt head gt   lt meta http-equiv  Content-Type  content  text html  charset ISO-8859-1  gt   lt title gt Upload Done lt  title gt   lt  head gt   lt body gt   lt h3 gt Your file has been uploaded  lt  h3 gt   lt  body gt   lt  html gt

User · Answer

You cannot upload like this   http   grand-shopping com  lt  some folder  gt    You need a physical path exactly like in your local  C  Users puneet verma Downloads    What you can do is create some local path where your server is working  Hence you can store and retrieve the file  If you bought some domain from any websites there will be path to upload the files  You create these variable as static constant and use it based on the server you are working  Local Website

User · Answer

I found the similar problem and found the solution and i have blogged about how to upload the file using JSP   In that example i have used the absolute path  Note that if you want to route to some other URL based location you can put a ESB like WSO2 ESB

[java] How to upload files on server folder using jsp

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