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How to create a Force Download link for pdf file in JSP
















Create 2 Files 

 DownloadPage.JSP code :-


<a href='downloadPdf.jsp?file=FILE.pdf' >Download PDF File</a>

downloadPdf.JSP code :-




<%@ page import="java.util.*,java.io.*" %>               
          
<!--contents of download.jsp-->
<!--Assumes that file name is in the request objects query Parameter -->
<%
 //read the file name.
 
    //out.print("D:/Inder Folder/data/PDL Back UP/30 july/reverted OLD/Copy of PanjabDigi 8 june/PanjabDigi OLD WITH ADV SEARCH/web/webuser/exhibitions/" + request.getParameter("file") );

%>

<%
 File f = new File ("E:/PDLDataServer/Downloads/PdfFiles/" + request.getParameter("file") );
 //set the content type(can be excel/word/powerpoint etc..)
 response.setContentType ("application/pdf");
 //set the header and also the Name by which user will be prompted to save
 response.setHeader ("Content-Disposition", "attachment; filename=\""+request.getParameter("file")+"\"");
 
 //get the file name
 String name = f.getName().substring(f.getName().lastIndexOf("/") + 1,f.getName().length());
 //OPen an input stream to the file and post the file contents thru the 
 //servlet output stream to the client m/c
 
  InputStream in = new FileInputStream(f);
  ServletOutputStream outs = response.getOutputStream();
  
  
  int bit = 256;
  int i = 0;
  try {
   while ((bit) >= 0) {
    bit = in.read();
    outs.write(bit);
   }
   //System.out.println("" +bit);
  } catch (IOException ioe) {
   ioe.printStackTrace(System.out);
  }
//  System.out.println( "n" + i + " bytes sent.");
//  System.out.println( "n" + f.length() + " bytes sent.");
  outs.flush();
  outs.close();
  in.close(); 

%>


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How to Check if file or folder exist in JSP or Java
























<%
                    String path = "";
                    path = "D:\Folder\Data\2012\feb\Pan\PDml\001543\SomeFile.pdf";
                    File file=new File(path);
                    boolean exists = file.exists();
                    if (!exists) {
                   out.println("File not Available for Download");
                    }else{  // It returns true if File or directory exists
                   %>
                 
                   <a href=''><font class='blueList'>Download File</font> </a>
                 
                    <% }
                    %>


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How to Force Format Pen-drive or Memory card using cmd or Command prompt in xp

press windows+R

type cmd in Run 

then paste below command using mouse

format G: /FS:FAT32 /x  

then Enter

1 comments :

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