File upload with jsp

Question

I am trying to upload a file to a mysql database (using a jsp tomcat 4.1 container) for each new member of my website (typically a cv which is a .rtf word file). I have used the example on the oreilly page and have managed to get the image of the file I have uploaded. Now I am trying to save this into my database for each member so that they can enter all of their details on the one page i.e. name age etc and also a browse for file button which will store the path of their file on their computer. When they click the submit button, all of their details are then stored into the database by the resultant page which outputs wehter they have been successful or not.
The upload bean code (from the oreilly site):
package com.idhcitip;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.ServletInputStream;
import java.util.Dictionary;
import java.util.Hashtable;
import java.io.PrintWriter;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
public class FileUploadBean {
private String savePath, filepath, filename, contentType;
private Dictionary fields;
public String getFilename() {
return filename;
public String getFilepath() {
return filepath;
public void setSavePath(String savePath) {
this.savePath = savePath;
public String getContentType() {
return contentType;
public String getFieldValue(String fieldName) {
if (fields == null || fieldName == null)
return null;
return (String) fields.get(fieldName);
private void setFilename(String s) {
if (s==null)
return;
int pos = s.indexOf("filename=\"");
if (pos != -1) {
filepath = s.substring(pos+10, s.length()-1);
// Windows browsers include the full path on the client
// But Linux/Unix and Mac browsers only send the filename
// test if this is from a Windows browser
pos = filepath.lastIndexOf("\\");
if (pos != -1)
filename = filepath.substring(pos + 1);
else
filename = filepath;
private void setContentType(String s) {
if (s==null)
return;
int pos = s.indexOf(": ");
if (pos != -1)
contentType = s.substring(pos+2, s.length());
public void doUpload(HttpServletRequest request) throws IOException {
ServletInputStream in = request.getInputStream();
byte[] line = new byte[128];
int i = in.readLine(line, 0, 128);
if (i < 3)
return;
int boundaryLength = i - 2;
String boundary = new String(line, 0, boundaryLength); //-2 discards the newline character
fields = new Hashtable();
while (i != -1) {
String newLine = new String(line, 0, i);
if (newLine.startsWith("Content-Disposition: form-data; name=\"")) {
if (newLine.indexOf("filename=\"") != -1) {
setFilename(new String(line, 0, i-2));
if (filename==null)
return;
//this is the file content
i = in.readLine(line, 0, 128);
setContentType(new String(line, 0, i-2));
i = in.readLine(line, 0, 128);
// blank line
i = in.readLine(line, 0, 128);
newLine = new String(line, 0, i);
PrintWriter pw = new PrintWriter(new BufferedWriter(new
FileWriter((savePath==null? "" : savePath) + filename)));
while (i != -1 && !newLine.startsWith(boundary)) {
// the problem is the last line of the file content
// contains the new line character.
// So, we need to check if the current line is
// the last line.
i = in.readLine(line, 0, 128);
if ((i==boundaryLength+2 || i==boundaryLength+4) // + 4 is eof
&& (new String(line, 0, i).startsWith(boundary)))
pw.print(newLine.substring(0, newLine.length()-2));
else
pw.print(newLine);
newLine = new String(line, 0, i);
pw.close();
else {
//this is a field
// get the field name
int pos = newLine.indexOf("name=\"");
String fieldName = newLine.substring(pos+6, newLine.length()-3);
//System.out.println("fieldName:" + fieldName);
// blank line
i = in.readLine(line, 0, 128);
i = in.readLine(line, 0, 128);
newLine = new String(line, 0, i);
StringBuffer fieldValue = new StringBuffer(128);
while (i != -1 && !newLine.startsWith(boundary)) {
// The last line of the field
// contains the new line character.
// So, we need to check if the current line is
// the last line.
i = in.readLine(line, 0, 128);
if ((i==boundaryLength+2 || i==boundaryLength+4) // + 4 is eof
&& (new String(line, 0, i).startsWith(boundary)))
fieldValue.append(newLine.substring(0, newLine.length()-2));
else
fieldValue.append(newLine);
newLine = new String(line, 0, i);
//System.out.println("fieldValue:" + fieldValue.toString());
fields.put(fieldName, fieldValue.toString());
i = in.readLine(line, 0, 128);
} // end while
This works fine and I can access the image name of the file by using the commands in my jsp code(on the resultant page of the new member form):
<%@ page import="java.sql.*, com.idhcitip.*"%>
<jsp:useBean id="TheBean" scope="page" class="com.idhcitip.FileUploadBean" />
<%
TheBean.doUpload(request);
out.println("Filename:" + TheBean.getFilename());
So I am wondering how can I then store this image into a text blob in the database?
I found some code on the java.sun forum, but am not entirely sure how I am meant to use it?
package com.idhcitip;
import java.sql.*;
import java.io.*;
class BlobTest {
public static void main(String args[]) {
try {
//File to be created. Original file is duke.gif.
//DriverManager.registerDriver( new org.gjt.mm.mysql.Driver());
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
String host="localhost";
String user="root";
String pass="";
String db="idhcitip";
String conn;
// create connection string
conn = "jdbc:mysql://" + host + "/" + db + "?user=" + user + "&password=" +
pass;
// pass database parameters to JDBC driver
Connection Conn = DriverManager.getConnection(conn);
// query statement
Statement SQLStatement = Conn.createStatement();
/*PreparedStatement pstmt = conn.prepareStatement("INSERT INTO BlobTest VALUES( ?, ? )" );
pstmt.setString( 1, "photo1");
File imageFile = new File("duke.gif");
InputStream is = new FileInputStream(imageFile);
pstmt.setBinaryStream( 2, is, (int)(imageFile.length()));
pstmt.executeUpdate();
PreparedStatement pstmt = Conn.prepareStatement("SELECT image FROM testblob WHERE Name = ?");
pstmt.setString(1, args[0]);
RandomAccessFile raf = new RandomAccessFile(args[0],"rw");
ResultSet rs = pstmt.executeQuery();
if(rs.next()) {
Blob blob = rs.getBlob(1);
int length = (int)blob.length();
byte [] _blob = blob.getBytes(1, length);
raf.write(_blob);
System.out.println("Completed...");
} catch(Exception e) {
System.out.println(e);
Once I have managed to store the file, I would just like people to be able to view each members profile and then to click on a link that will have their stored c.v.
Thanks for a reply anyone

Answer 1

You could do this one of two ways..
using a prepaired statment, you could read in a byte array...
String sql="INSERT INTO BlobTest VALUES( ? )";
PreparedStatement ps=con.prepareStatement(sql);
ps.setBytes(1, byte[]); //Your byte array buffer from your FileUploadBean
ps.executeUpdate();or you could just use the input stream..
String sql="INSERT INTO BlobTest VALUES( ? )";
PreparedStatement ps=con.prepareStatement(sql);
ps.setBinaryStream(1, InputStream, length); //You'll have to do some work to get length
ps.executeUpdate();