Mr. Bipin S. Rupadiya: Servlet

Showing posts with label Servlet. Show all posts

RequestDispatcher include Example

Wednesday, February 12, 2014 | Posted by Bipin Rupadiya |

Labels: MVC, RequestDispatcher, Servlet, WTAD | 0 comments

example of preparedstatement in java

Saturday, June 22, 2013 | Posted by Bipin Rupadiya |

Create Table in MySql [ Employee ]

CREATE TABLE `wtad`.`Employee` (
`EmpId` INT( 4 ) NOT NULL ,
`Empname` VARCHAR( 15 ) NOT NULL ,
`Emp_desig` VARCHAR( 20 ) NOT NULL ,
`Emp_J_Date` VARCHAR( 20 ) NOT NULL ,
`Emp_Salary` INT( 8 ) NOT NULL
) ENGINE = MYISAM ;

Create Table in Oracle [ Employee ]

Labels: JDBC, Servlet, WTAD

Example of requestdispatcher

Friday, June 21, 2013 | Posted by Bipin Rupadiya |

index.jsp

<html>
<head>
<title>MySqlLogin</title>
<style>
.abc
{
background:#ababff;
position:absolute;
top:2in;
hieght:200px;
width:300px;
left:5in;
border-style:solid;
}
</style>
</head>

Labels: J2EE, JSP, Servlet, WTAD | 0 comments

Difference between GenericServlet and HttpServlet

Wednesday, February 06, 2013 | Posted by Bipin Rupadiya |

GenericServlet:

As name says it Generic in nature. Means GenericServlet is protocol-independent.
import javax.servlet.servlet package
super class of GenericServlet are java.lang.Object and it implements three interfaces Servlet, ServletConfig and java.io.Serializable
To write a generic servlet, override the abstract service().
GenericServlet lifecycle methods use ServletConfig interface.
GenericServlet implements the log() from ServletContext interface.
Prototype:

public abstract class GenericServlet extends java.lang.Object implements Servlet, ServletConfig, java.io.Serializable

Example:

Labels: Difference, GenericServlet, HttpServlet, J2EE, Servlet, WTAD | 0 comments

hello world servlet example

Thursday, January 31, 2013 | Posted by Bipin Rupadiya |

Step 1 : Create .java File using text editor

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class ServletDemo extends HttpServlet
{
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException,IOException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<HTML><HEAD><TITLE>WTAD</TITLE></HEAD> <body>");
String str="<h1>welcome to </h1>";
str=str+"<br>www.bipinrupadiya.blogspot.com";
out.println(str);
out.println("</body> </html>");
}
}

Labels: HttpServlet, sample servlet, Servlet | 1 comments

28. Develop a program to perform the database driven operation like insert, Delete, Update and select. To perform the above operations create one table named Employee.

Tuesday, May 15, 2012 | Posted by Bipin Rupadiya |

Create Table in MySql [ Employee ]

Labels: CSS, J2EE, JavaScript, JDBC, JSP, Servlet

16. Assume that the information regarding the marks for all the subjects of a student in the last exam are available in a database, Develop a Servlet which takes the enrollment number of a student as a request parameter and displays the marksheet for the student.

Wednesday, April 04, 2012 | Posted by Bipin Rupadiya |

1. Create Database in MySql / Oracle / Access

You can choose any database. Here, I provide the solution to connect database like MySQL, Oracle, and Microsoft Access

2. Create Table IN MySQL

create table MARK (EnNo VARCHAR(10),Code VARCHAR(10),Name VARCHAR(10),Mark INT(3));

3. Create Table IN Oracle

create table MARK (EnNo VARCHAR(10),Code VARCHAR(10),Name VARCHAR(10),Mark NUMBER (3));

4. Create Web Application in tomcat using following code

index.jsp

<HTML>
<HEAD>
<TITLE>Ex-16 : www.BipinRupadiya.blogspot.in</TITLE>
<style>
.abc
{
background:#ababff;
position:absolute;
top:2in;
hieght:200px;
width:400px;
left:5in;
border-style:solid;
}
</style>

</HEAD>
<BODY>
<div class="abc" id="f1">
<br>
<center>
<h3>
<FORM METHOD=POST ACTION="Ex16.com">
Enrollment No.: <input type=TEXT name = "txtEnNo" >
<BR><BR><input type="submit" value="Show Result">
</FORM>
</div>
</BODY>
</HTML>

Ex16.java

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

@WebServlet("/Ex16.com")
public class Ex16 extends HttpServlet
{
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
String enNo = request.getParameter("txtEnNo");
response.setContentType("text/html");
PrintWriter out = response.getWriter();

try
{
//Connect To MySql
/* Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/wtad","root","admin");

*/
//Connect To Oracle

Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","scott","tiger");

//Connect To Access
/*
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection("jdbc:odbc:test","bipin","rupadiya");
*/

String sql = "select * from MARK where EnNo = ?";
PreparedStatement ps=con.prepareStatement(sql);
ps.setString(1, enNo);

ResultSet rs= ps.executeQuery();

out.println("<HTML><BODY bgcolor='#ababff'>");
out.println("<center><h1> Marksheet</h1>");
out.println("<TABLE BORDER=1 cellpadding='5px' width=50%");

out.println("<TR><TH colspan=3> Enrollment No.:"+enNo+"</TH></TR>");
out.println("<TR><TH>CODE </TH> <TH>NAME </TH> <TH> GRADE </TH></TR>");

if(rs == null)
{
out.println("<h1> Result Not Found... </h1>");
}
else
{
while(rs.next())
{
out.println("<TR>");
out.println("<TD>"+rs.getString(2)+"</TD>");
out.println("<TD>"+rs.getString(3)+"</TD>");
out.println("<TD>"+rs.getInt(4)+"</TD>");
out.println("</TR>");
}
out.println("<TR><TH colspan=3> <a href='index.jsp'>Home</a> </TH></TR>");
out.println("</TABLE></CENTER></BODY></HTML>");
rs.close();
ps.close();
con.close();
}
}
catch(SQLException e)
{
out.println(e);
}
catch(ClassNotFoundException e)
{
out.println(e);
}
catch(Exception e)
{
out.println(e);
}

}
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
doGet(request, response);
}
}

Labels: J2EE, Servlet, WTAD | 1 comments

15. Assume that we have got three pdf files for the MCA-1 Syllabus, MCA-2 Syllabus and MCA-3 Syllabus respectively, Now write a Servlet which displays the appropriate PDF file to the client, by looking at a request parameter for the year (1, 2 or 3).

Monday, January 30, 2012 | Posted by Bipin Rupadiya |

Index.html

<html>
<head>
<title>EX-15: WTAD : www.bipinrupadiya.com</title>
</head>
<body>
<center>
<FORM action="/Ex15/bipinrupadiya.blogspot.com">
Select MCA Syllabus : <select size=1 name="MCA">
<option value="MCA-1">MCA1</option>
<option value="MCA-2">MCA2</option>
<option value="MCA-3">MCA3</option>
</select>
<INPUT TYPE="SUBMIT" value="Show" >
</FORM>
</center>
</body>
</html>

Servlet

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.WebServlet;

@WebServlet(
name="WTAD",
urlPatterns={"/Ex15","/bipinrupadiya.blogspot.com"}
)
public class ShowPDF extends HttpServlet
{
public void doGet(HttpServletRequest request, HttpServletResponse response)throws
ServletException,IOException
{
String sem = request.getParameter("MCA");
response.setContentType("application/pdf");
response.sendRedirect("/"+sem+".pdf");
}
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException
{
doGet(request,response);
}
}

NOTE: Put Three .pdf file on application's root directory (MCA-1.pdf, MCA-2.pdf, MCA-3.pdf)

Labels: J2EE, JavaScript, Servlet, WTAD | 8 comments

14. Write a Servlet which displays a message and also displays how many times the message has been displayed (how many times the page has been visited).

Monday, January 30, 2012 | Posted by Bipin Rupadiya |

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
import javax.servlet.annotation.WebServlet;

@WebServlet("/PageVisitCounter")

public class PageVisitCounter extends HttpServlet
{
    public void doGet(HttpServletRequest req , HttpServletResponse res) 
	throws IOException , ServletException
    {
        PrintWriter out = res.getWriter();
		Cookie[] myCookie = req.getCookies();
		boolean found = false;
		int v=0;
        if(myCookie != null)
        {
			for(int i=0; i<myCookie.length;i++)
			{
				if(myCookie[i].getName().equals("pageCount"))
				{     
					v = Integer.parseInt(myCookie[i].getValue());
					v++;     
					Cookie c1 = new Cookie("pageCount",String.valueOf(v));
					res.addCookie(c1);
					out.println("Visit No.:"+v);
					found = true;
					break;
				}				 
			}           
        }
		if(found==false)
		{
			Cookie c1 = new Cookie("pageCount",String.valueOf(v));
            res.addCookie(c1);
            out.println("<h1>Welcome to www.BipinRupadiya.com site</h1><br><br><br>You have done first visit..!");
		}      
    }	
}
NOTE :  Enable Cookie in your browser to run this example.

Labels: J2EE, JavaScript, Servlet, WTAD

13. Write a Servlet to display all the attributes available from request and context.

Monday, January 30, 2012 | Posted by Bipin Rupadiya |

import javax.servlet.*;
import java.util.*;
import java.io.*;
import javax.servlet.http.*;
import javax.servlet.annotation.WebServlet;

@WebServlet(
name="WTAD",
urlPatterns={"/Ex13","/bipinrupadiya.blogspot.com"}
)
public class RequestAttributes2 extends HttpServlet
{

public void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException
{

response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<br> Server Port : " + request.getServerPort());
out.println("<br> Server Name : " + request.getServerName());
out.println("<br> Protocol : " + request.getProtocol());
out.println("<br> Character Encoding : " + request.getCharacterEncoding());
out.println("<br> Content Type : " + request.getContentType());
out.println("<br> Content Length : " + request.getContentLength());
out.println("<br> Remote Address : " + request.getRemoteAddr());
out.println("<br> Remote Host : " + request.getRemoteHost());

out.println("<table border=1 align='CENTER'><tr bgcolor='#FFAD00'>") ;
out.println("<th>Header Name</th><th>Header Value</th></tr>");

Enumeration parameters = request.getParameterNames();
while(parameters.hasMoreElements())
{
String ParaName= (String) parameters.nextElement();
out.println("<tr><td>" + ParaName+"</td>");
out.println("<td>" + request.getParameter(ParaName)+"</td></tr>");

}
out.println("</table><br><br>");
out.println("<table border=1 align='CENTER'><tr bgcolor='#FFAD00'>") ;
out.println("<th>Attribute Name</th><th>Attribute Value</th></tr>");

Enumeration attributes = request.getAttributeNames();
while(attributes.hasMoreElements())
{
String attName = (String) attributes.nextElement();
out.println("<tr><td>" + attName+"</td>");
out.println("<td> " + request.getAttribute(attName)+"</td></tr>");
}
out.println("</table>");
}
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws ServletException, IOException
{
doGet(request, response);
}

}

Labels: J2EE, JavaScript, Servlet, WTAD | 0 comments

12. Write a Servlet to display parameters available on request.

Monday, January 30, 2012 | Posted by Bipin Rupadiya |

Index.html

<html>
<head>
<title>EX-12: WTAD : www.bipinrupadiya.com</title>
</head>
<body>

<form action="/Ex12/bipinrupadiya.blogspot.com" method="get">
<br>User:<input type="text" name="usr">
<br>
Password : <input type="text" name="pwd">
<br>
<input type="Submit" value="Login"><input type="reset" value="Clear">
</form>

<body>
</html>

Servlet

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.WebServlet;

@WebServlet(
name="WTAD",
urlPatterns={"/Ex12","/bipinrupadiya.blogspot.com"}
)

public class readLogin extends HttpServlet
{
public void doGet(HttpServletRequest request,HttpServletResponse response)
throws ServletException, IOException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<br><B>USER :</B>: "
+ request.getParameter("usr") +
"<br><B>Password</B>: "
+ request.getParameter("pwd") +
"");
}
}

output

Labels: J2EE, JavaScript, Servlet, WTAD | 0 comments

11. Write a Servlet to display all the headers available from request.

Monday, January 30, 2012 | Posted by Bipin Rupadiya |

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
import javax.servlet.annotation.WebServlet;

/** Showing all request headers of current request. */

@WebServlet(
name="WTAD",
urlPatterns={"/Ex11","/bipinrupadiya.blogspot.com","/RequestHeaders"}
)
public class ShowRequestHeaders extends HttpServlet {
public void doGet(HttpServletRequest request,HttpServletResponse response)
throws ServletException, IOException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String title = "GTU : Ex-11 : Showing all Request Headers";
out.println("<HTML>\n" +
"<HEAD><TITLE>" + title + "</TITLE></HEAD>\n" +
"<BODY BGCOLOR=\"#FDF5E6\">\n" +
"<H1 ALIGN=\"CENTER\">" + title + "</H1>\n" +
"<B>Request Method: </B>" +
request.getMethod() + "<BR>\n" +
"<B>Request URI: </B>" +
request.getRequestURI() + "<BR>\n" +
"<B>Request Protocol: </B>" +
request.getProtocol() + "<BR><BR>\n" +
"<TABLE BORDER=1 ALIGN=\"CENTER\">\n" +
"<TR BGCOLOR=\"#FFAD00\">\n" +
"<TH>Header Name<TH>Header Value");
Enumeration headerNames = request.getHeaderNames();
while(headerNames.hasMoreElements()) {
String headerName = (String)headerNames.nextElement();
out.println("<TR><TD>" + headerName);
out.println(" <TD>" + request.getHeader(headerName));
}
out.println("</TABLE>\n</BODY></HTML>");
}

public void doPost(HttpServletRequest request,HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
}

output

Labels: J2EE, JavaScript, Servlet, WTAD | 3 comments

create GenericServlet

Monday, January 30, 2012 | Posted by Bipin Rupadiya |

Step 1 : Create .java File using text editor

import javax.servlet.*;
import java.io.*;
import javax.servlet.annotation.WebServlet;
@WebServlet(
name="WTAD",
urlPatterns={"/Ex10","/index.html","/BipinRupadiya.blogspot.com"}
)
public class GenricServletDemo extends GenericServlet
{
public void service(ServletRequest request, ServletResponse response)
throws ServletException,IOException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html><head><title>WTAD</title></head> <body>");
String str="<h1>
welcome to </h1>
";
str=str+"<br />www.bipinrupadiya.blogspot.com";
out.println(str);
out.println("</body> </html>");
}
}

Labels: J2EE, JavaScript, Servlet, WTAD | 0 comments

Mr. Bipin S. Rupadiya

Assistant Professor | Ph.D. Research Scholar
Full Stack Developer | Author | Graphic Designer

RequestDispatcher include Example

example of preparedstatement in java

Example of requestdispatcher

index.jsp

Difference between GenericServlet and HttpServlet

GenericServlet:

hello world servlet example

Step 1 : Create .java File using text editor

28. Develop a program to perform the database driven operation like insert, Delete, Update and select. To perform the above operations create one table named Employee.

16. Assume that the information regarding the marks for all the subjects of a student in the last exam are available in a database, Develop a Servlet which takes the enrollment number of a student as a request parameter and displays the marksheet for the student.

15. Assume that we have got three pdf files for the MCA-1 Syllabus, MCA-2 Syllabus and MCA-3 Syllabus respectively, Now write a Servlet which displays the appropriate PDF file to the client, by looking at a request parameter for the year (1, 2 or 3).

14. Write a Servlet which displays a message and also displays how many times the message has been displayed (how many times the page has been visited).

13. Write a Servlet to display all the attributes available from request and context.

12. Write a Servlet to display parameters available on request.

output

11. Write a Servlet to display all the headers available from request.

output

create GenericServlet

Step 1 : Create .java File using text editor

Subjects

Categories

Blog Archive

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Assistant Professor | Ph.D. Research Scholar Full Stack Developer | Author | Graphic Designer

index.jsp

GenericServlet:

Step 1 : Create .java File using text editor

output

output

Step 1 : Create .java File using text editor

Subjects

Categories

Blog Archive

Total Pageviews

Assistant Professor | Ph.D. Research Scholar
Full Stack Developer | Author | Graphic Designer