Versions Compared

Old Version 10

changes.mady.by.user Ashish Jain

Saved on

compared with

New Version 11

changes.mady.by.user Ashish Jain

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

  1. Start the server and Launch the Administrative Console using the URL http://localhost:8080/console.
  2. Enter default username and password.
  3. Once in the welcome page. In console navigation, Under Services, Select Database Pools.





  4. On the next screen, Create a new database pool using Geronimo database pool wizard.





  5. On the next screen give the name as suggested in the figure. This will initiate the process to create a Derby Embedded XA datasource.





  6. Select the Driver jar and give the database name as userdbs(Remember this is the database we created in the previous step). Rest all fields can be set to default.





  7. Select Deploy to deploy the connector plan.





  8. Once done you can see the Database Pool jdbc/userds listed in the available database pools.





Adding code for Image Upload to derby database

  1. Right click on WebContent and Select New->jsp.





  2. Name the jsp as index.jsp and Select Next.





  3. Select Finish. This will create a template for index.jsp.





  4. Add the following code to index.jsp.
    Code Block
    titleindex.jsp
    borderStylesolid
    <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Image Upload</title>
</head>
<body>
<h2>Select a Image and Upload it</h2>
<form action="/WebJDBC/ImageUpload">
<table>
<tr>
<td>
Location of the Image(full path)
</td>
<td>
<Input type="text" name="ImageLoc">
</td>
</tr>
<tr>
<td>
Name of the Image(Unique Name)
</td>
<td>
<Input type="text" name="ImageName">
</td>
</tr>
<tr>
<td>
<Input type="submit" value="submit">
</td>
<tr>
</table>
</form>
</body>
</html>
    The <form action="/WebJDBC/ImageUpload"> suggests that once the form is submitted the request will be passed to ImageUpload. Next step is to add the servlet ImageUpload to process the request sent by the JSP client.
  5. Right click on Java Resources and Select New->other.





  6. Select Web->Servlet. Select Next.





  7. Name the java package as jdbc and class as ImageUpload. Select Next.





  8. Select Finish.


  9. Add the following code to ImageUpload.java.
    Code Block
    titleImageUpload.java
    borderStylesolid
    package jdbc;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import javax.annotation.Resource;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;

public class ImageUpload extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
	@Resource(name="jdbc/userds")
	 private DataSource ds;
   static final long serialVersionUID = 1L;
   
 	public ImageUpload() {
		super();
	}   	
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doProcess(request, response);
	}  	
	
	protected void doProcess(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		Connection dbconnect = null;
		PreparedStatement stmnt = null;
		String pic=request.getParameter("ImageLoc");
		String name=request.getParameter("ImageName");
		try{
			File f= new File(pic);
			FileInputStream fis=new FileInputStream(f);
			dbconnect= ds.getConnection();
			stmnt = dbconnect.prepareStatement("INSERT INTO PICTURES (" + "NAME," + "PIC )" + " VALUES(?,?)");
			stmnt.setString(1, name);
			stmnt.setBinaryStream(2, fis, (int)f.length());
			stmnt.execute();
			PrintWriter out= response.getWriter();
			out.println("Congratulations your image has been successfully uploaded");			
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
		finally
		{
		try{
    		dbconnect.close();
    		stmnt.close();
    	}catch(SQLException e){
    		e.printStackTrace();
    	}    
		}
	}
		
	
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doProcess(request, response);
	}   	  	    
}

This completes the code for Image Upload.

Code to retrieve the image from derby database