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Sharada ananya
need code for file browser
2 Answer(s)      2 years and 8 months ago
Posted in : Java Beginners


hi, i need to write a code to browse the file in my computer using Jsp or java.. what is the code for file browser?


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January 6, 2012 at 4:08 PM


JSP Code for browsing:

1)page.jsp:

<%@ page language="java" %>
<HTML>
<FORM ENCTYPE="multipart/form-data" ACTION="uploadandstore.jsp" 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)upload.jsp:

<%@ page import="java.io.*" %>
<%@ page import="java.sql.*" %>

<%
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);
String saveFile = file.substring(file.indexOf("filename=\"") + 10);
saveFile = saveFile.substring(0, saveFile.indexOf("\n"));
saveFile = saveFile.substring(saveFile.lastIndexOf("\\") + 1,saveFile.indexOf("\""));
out.println(saveFile);
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;

FileOutputStream fileOut = new FileOutputStream(saveFile);
fileOut.write(dataBytes, startPos, (endPos - startPos));
fileOut.flush();
fileOut.close();

%><Br><table border="2"><tr><td><b>You have successfully upload the file by the name of:</b>
<% out.println(saveFile);%></td></tr></table>
<%
Connection connection = null;
String connectionURL = "jdbc:mysql://192.168.10.112:3306/file";
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("unsucessfull to upload file.");
}
}
catch(Exception e){e.printStackTrace();}
}
%>


January 6, 2012 at 4:10 PM


Java swing File browse:

import java.sql.*;
import java.awt.*;
import java.io.*;
import javax.swing.*;
import java.awt.image.*;
import java.awt.event.*;

public class UploadImage extends JFrame {
Image img;
JTextField text=new JTextField(20);
JButton browse,save;
JPanel p=new JPanel(new GridLayout(1,2));
JLabel label=new JLabel();
File file = null;
String path="";
public UploadImage() {

browse = new JButton("Upload");
save = new JButton("Save");
text.setBounds(20,20,140,20);
browse.setBounds(160,20,100,20);
label.setBounds(20,40,260,20);
save.setBounds(250,20,100,20);
add(p);
setSize(600,500);
add(text);
add(browse);
add(save);

add(label);
setVisible(true);

browse.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser chooser = new JFileChooser();
chooser.addChoosableFileFilter(new ImageFileFilter());
int returnVal = chooser.showOpenDialog(null);

if(returnVal == JFileChooser.APPROVE_OPTION) {
file = chooser.getSelectedFile();
 path=file.getPath();
ImageIcon icon=new ImageIcon(path);
label.setIcon(icon);
text.setText(path);

repaint();
}
}
});
save.addActionListener(new ActionListener(){
    public void actionPerformed(ActionEvent e){
        try{
        File f=new File(path);
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection connection = DriverManager.getConnection("jdbc:mysql://192.168.10.13:3306/rose", "root", "root");
PreparedStatement psmnt = connection.prepareStatement("insert into images(image) values(?)");
FileInputStream fis = new FileInputStream(f);
psmnt.setBinaryStream(1, (InputStream)fis, (int)(f.length()));
int s = psmnt.executeUpdate();
JOptionPane.showMessageDialog(null,"Inserted successfully!");
    }
    catch(Exception ex){
        System.out.print(ex);
    }
    }

});
}

public static void main(String[] args) {
 new UploadImage();
}

}
class ImageFileFilter extends javax.swing.filechooser.FileFilter {
public boolean accept(File file) {
if (file.isDirectory()) return false;
String name = file.getName().toLowerCase();
return (name.endsWith(".jpg") || name.endsWith(".png")|| name.endsWith(".gif"));
}
public String getDescription() { return "Images (*.gif,*.bmp, *.jpg, *.png )"; }
}


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