Guest Book Application Using Servlets - Algorithms Source Code in Java

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Home » Java Home » Algorithms Home » Guest Book Application Using Servlets

A D V E R T I S E M E N T

Title	Guest Book Application Using Servlets
Author	Satish.K
Author Email	fly_sati [at] yahoo.co.in
Description
Category	Java » Algorithms
Hits	445329
Code	Select and Copy the Code
// 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>

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