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| java+jsp |
Expert:ajith
I want to know how can I use java class in my jsp page?i'm not gettin hw it is.please help me.if u can give me the explanation with one example its good for me..
thanks in advance
ajith.. |
| Answers |
Hi friend,
<%@ page language="java" %>
Please enter your Name and Password here:
<br>
<br>
<form name="frm" action="/JSPMultipleForms/Authentication" method="Post" >
Name: <input type="text" name="user" value=""/>
Password:<input type="text" name="pass" value=""/>
<input type="submit" value="Check" />
</form>
---------------------------------
java file
import java.io.*;
import java.util.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Authentication extends HttpServlet{
private ServletConfig config;
public void init(ServletConfig config)
throws ServletException{
this.config=config;
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException,IOException{
PrintWriter out = response.getWriter();
String connectionURL = "jdbc:mysql://192.168.10.59/messagepaging";;
Connection connection=null;
ResultSet rs;
String userName=new String("");
String passwrd=new String("");
response.setContentType("text/html");
try {
// Load the database driver
Class.forName("com.mysql.jdbc.Driver");
// Get a Connection to the database
connection = DriverManager.getConnection(connectionURL, "root", "root");
//Add the data into the database
String sql = "select user,password from User";
Statement s = connection.createStatement();
s.executeQuery (sql);
rs = s.getResultSet();
while (rs.next ()){
userName=rs.getString("user");
passwrd=rs.getString("password");
}
rs.close ();
s.close ();
}catch(Exception e){
System.out.println("Exception is ;"+e);
}
if(userName.equals(request.getParameter("user")) &&
passwrd.equals(request.getParameter("pass"))){
out.println("User Authenticated");
}
else{
out.println("You are not an authentic person");
}
}
}
-------------------------------------------------------
Read for more information.
http://www.roseindia.net/jsp/
Thanks
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