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Aasif Iqbal
File Upload is working in FireFox & Chrome but not in IE7 using java & jquery
1 Answer(s)      2 years and 6 months ago
Posted in : JSP-Servlet


Hi,

I have a form which is called on my button click "Upload a file" and shows dialogue to select the file.After that I am calling Jquery function to upload that file.In my jquery I am calling a servlet for upload.The code works fine at FireFox & Chrome,but when I tried to upload the file from Internet Explorer I wonder that the file is getting created at my destination folder but the content is still not there.I checked the file size also.It shows me some bytes.I am trying to upload images.

can somebody please help me...I am stuck.....


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February 24, 2012 at 12:22 PM


1)page.jsp

<%@ page language="java" %>
<HTML>
<FORM ENCTYPE="multipart/form-data" ACTION="../UploadServlet" METHOD=POST>
<center>
<table border="0" bgcolor=#ccFDDEE>
<tr>
<center><td colspan="2" align="center"><B>UPLOAD THE FILE</B><center></td>
</tr>
<tr><td colspan="2" align="center"> </td></tr>
<tr><td><b>Choose the file To Upload:</b></td>
<td><INPUT NAME="file" TYPE="file"></td>
</tr>
<tr><td colspan="2" align="center"> </td></tr>
<tr><td colspan="2" align="center"><input type="submit" value="Send File"> </td></tr>
<table>
</center>
</FORM>
</HTML>

2)UploadServlet.java:

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;

public class UploadServlet extends HttpServlet{ 
     public void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException {
     response.setContentType("text/html");
     PrintWriter out = response.getWriter();

    String saveFile="";
    String contentType = request.getContentType();
    if((contentType != null)&&(contentType.indexOf("multipart/form-data") >= 0)){
    DataInputStream in = new DataInputStream(request.getInputStream());
    int formDataLength = request.getContentLength();
    byte dataBytes[] = new byte[formDataLength];
    int byteRead = 0;
    int totalBytesRead = 0;
    while(totalBytesRead < formDataLength){
    byteRead = in.read(dataBytes, totalBytesRead,formDataLength);
    totalBytesRead += byteRead;
   }
    String file = new String(dataBytes);
    saveFile = file.substring(file.indexOf("filename=\"") + 10);
    saveFile = saveFile.substring(0, saveFile.indexOf("\n"));
    saveFile = saveFile.substring(saveFile.lastIndexOf("\\") + 1,saveFile.indexOf("\""));
    int lastIndex = contentType.lastIndexOf("=");
    String boundary = contentType.substring(lastIndex + 1,contentType.length());
    int pos;
    pos = file.indexOf("filename=\"");
    pos = file.indexOf("\n", pos) + 1;
    pos = file.indexOf("\n", pos) + 1;
    pos = file.indexOf("\n", pos) + 1;
    int boundaryLocation = file.indexOf(boundary, pos) - 4;
    int startPos = ((file.substring(0, pos)).getBytes()).length;
    int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length;
    File ff = new File(saveFile);
    FileOutputStream fileOut = new FileOutputStream(ff);
    fileOut.write(dataBytes, startPos, (endPos - startPos));
    fileOut.flush();
    fileOut.close();
    out.println("You have successfully upload the file:"+saveFile);
    Connection connection = null;
    String connectionURL = "jdbc:mysql://localhost:3306/test";
    ResultSet rs = null;
    PreparedStatement psmnt = null;
    FileInputStream fis;
    try{
    Class.forName("com.mysql.jdbc.Driver").newInstance();
    connection = DriverManager.getConnection(connectionURL, "root", "root");
    File f = new File(saveFile);
    psmnt = connection.prepareStatement("insert into file(file_data) values(?)");
    fis = new FileInputStream(f);
    psmnt.setBinaryStream(1, (InputStream)fis, (int)(f.length()));
    int s = psmnt.executeUpdate();
    if(s>0){
    System.out.println("Uploaded successfully !");
    }
    else{
    System.out.println("Error!");
    }
    }
    catch(Exception e){
        e.printStackTrace();
        }
    }
  }
}


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