Uploading the files to a database table with commons fileupload:
Create the web project
Create a html file form to upload the file
<html>
<head>
<title>Add MP3</title>
</head>
<body>
<h2>Add MP3</h2>
<form id="addmp3" enctype="multipart/form-data" action="/
OnlineMusicPlayer/MP3UploadServlet" method="post">
<table>
<tr><td>Enter Title :</td><td><input type="text" name="title"/></td>
</tr>
<tr><td>Select MP3</td><td><input type="file" name="photo" />
</tr>
</table>
<p/>
<input type="submit" value="Add MP3"/>
</form>
<p/>
</body>
</html>
Change the action accordingly with the servlet path.
Create a servlet to store the file to a database table.
import java.io.*;
import java.sql.*;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.*;
import org.apache.commons.fileupload.*;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import db.DatabaseConnection;
public class MP3UploadServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public MP3UploadServlet() {
super();
// TODO Auto-generated constructor stub
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
boolean isMultiPart = false;
PrintWriter out = response.getWriter();
Connection con = DatabaseConnection.getConnection();
PreparedStatement ps=null;
try {
// Check that we have a file upload request
isMultiPart = ServletFileUpload.isMultipartContent(request);
System.out.println("isMultiPart=" + isMultiPart);
if (isMultiPart) {
// Create a factory for disk-based file items
FileItemFactory fileItemFactory = new DiskFileItemFactory();
// Create a new file upload handler
ServletFileUpload servletFileUpload = new ServletFileUpload(
fileItemFactory);
List fileItemsList = servletFileUpload.parseRequest(request);
out.println("<html>");
out.println("<head>");
out.println("<title>MP3 upload</title>");
out.println("</head>");
out.println("<body>");
FileItem id = (FileItem)fileItemsList.get(0);
String songtitle = id.getString();
// get uploaded file
FileItem file = (FileItem) fileItemsList.get(1);
ps = con.prepareStatement("insert into music_store(song_id,song_title,song_data) values(song_id_sequence.nextval,?,?)");
ps.setString(1, songtitle);
ps.setBinaryStream(2, file.getInputStream(),(int) file.getSize());
ps.executeUpdate();
con.commit();
}
out.println("File Upload Success...");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
out.println("File Upload Error....");
} finally {
out.println("</body>");
out.println("</html>");
if (con != null)
try {
ps.close();
con.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
out.close();
}
}
}
The song_data column in the music_store table should be BLOB.
The jar files required - commons-io-2.2.jar , commons-fileupload-1.2.2.jar
