Guest Book Application Using Servlets

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Displaying Source Code(s)

Guest Book Application Using Servlets

--------------------------------------------------------------------------------

Description : Not Specified

// guestbk.java //

import java.sql.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class guestbk extends httpservlet
{
Connection con;
public void doPost(HttpServletRequest req,HttpServletResponse res)
throws
IOException,ServletException
{
PrintWriter out=new PrintWriter(res.getOutputStream());
int ctr=0;
res.setContentType("text/html");
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con=DriverManager.getConnection("jdbc:odbc:booksrc","","");
Statement stmt=con.createStatement();
ResultSet rs=stmt.executeQuery("select * from gbook");
out.println("<Html>");
out.println("<Head>");
out.println("<Title>GuestBook</Title>");
out.println("</Head>");
out.println("<Table border=1 align=center >");
out.println("<H4><B><center>GUEST BOOK DETAILS
</center></B></H4><BR>");
out.println("<TR><TD><b>E-Mail
Address</b></TD><TD><b>Comment</b></TD></TR>");
while(rs.next())
{
ctr++;
String email=rs.getString("emailid");
String cmt=rs.getString("comment");
out.println("<TR><TD>"+email+"</TD><TD>"+cmt+"</TD></TR>");
}
out.println("</Table>");
if(ctr==0)
out.println("<BR>No Records Found<BR>");
stmt.close();
con.close();
}
catch(SQLException SQLExcep)
{
System.out.println("error");
}
catch(ClassNotFoundException CNFE)
{
System.out.println("error");
}
out.println("</Html>");
out.close();
}
}

// submit.java //
import java.sql.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class submit extends HttpServlet
{
Connection con;
public void doPost(HttpServletRequest req,HttpServletResponse res)
throws
IOException,ServletException
{
String str1,str2;
str1=req.getParameter("emailid");
str2=req.getParameter("comment");
System.out.println(str1);
System.out.println(str2);
res.setContentType("text/html");
PrintWriter out=res.getWriter();
out.println("<html><h2>Guest Book is Successfully
Updated</h2></html>");
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con=DriverManager.getConnection("jdbc:odbc:booksrc","","");
Statement stmt=con.createStatement();
ResultSet rs;
int i= stmt.executeUpdate("insert into gbook
values('"+str1+"','"+str2+"')");
if(i==1)
{
System.out.println("ok");
}
stmt.close();
con.close();
}
catch(SQLException SQLExcep)
{
System.out.println("error");
}
catch(ClassNotFoundException CNFE)
{
System.out.println("error");
}}
}

//guestbk.htm//
<Html>
<Head>
<Title>GUEST BOOK</Title>
</Head>
<Body>
<P>
<Center>
<Form Action= "http:\localhost:8080servletguestbk" Method= "POST">
<Input Type="Submit" Value="VIEW THE GUEST BOOK">
</Form>
<BR>
<Form action= "http:\localhost:8080servletsubmit" method= "Post">
ENTER YOUR EMAIL ADDRESS<Br>
<Input Type="text" Name="emailid" Size="40"><BR>
COMMENTS ARE ALWAYS WELCOME<BR>
<TextArea Name="comment" Rows="8" Cols="65"></TextArea>
</Center>
<P>
<P>
<BR>
<P>
<Center>
<Input Type="Submit" Value="Submit">
</Form>
<Input Type="Reset" Value="Reset">
</Center>
<BR>
</Body>
</Html>