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ikramlim
HTTP Status 404 - /Login/userdetail.java
2 Answer(s)      a year and 9 months ago
Posted in : JSP-Servlet


I using netbeans to coonect.. why always error.. help pls.. thx

index.jsp

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <form name="f1" action="userdetail.java" method="get">
            Username:<input type="text" name="uname">
            Password:<input type="text" name="upass">

            <input type="submit" value="Send">
        </form>
    </body>
</html>

userdetail.java
import java.io.*;
import java.net.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;


    Connection myConn=null;
        Statement myStmt=null;
        ResultSet myRs=null;

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {Class.forName("com.mysql.jdbc.Driver").newInstance();

            myConn=DriverManager.getConnection("jdbc.mysql://localhost:3306/Login/userdetail.java","root","");

            myStmt=myConn.createStatement();

            String query="select * from user";

            myRs=myStmt.executeQuery(query);

            while(myRs.next());
            {
                out.println("Username"+myRs.getString("uname"));
                out.println("Password"+myRs.getString("upass"));
                out.println("</br>");
            }

            }
        catch(Exception e)
        {
            System.out.println("Exception"+e);
        }

         finally {  
            try
            {
                myConn.close();
                myStmt.close();
                myRs.close();
            }
            catch(Exception e)
            {
                System.out.println("Exception from finally"+e);
            }
            out.close();
        }
    }

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View Answers

July 23, 2012 at 5:52 PM


There were some mistakes in your code. We have modified your code.

Here it is:

1) index.jsp

    <%@page contentType="text/html" pageEncoding="UTF-8"%>
    <html>
        <head>

            <title>JSP Page</title>
        </head>
        <body>
            <form name="f1" action="../userdetail" method="post">
            <pre>
                Username:<input type="text" name="uname">
                Password:<input type="text" name="upass">
                         <input type="submit" value="Send">
            </pre>
    </form>
    </body>
    </html>

2) userdetail.java

  import java.io.*;
    import java.net.*;
    import javax.servlet.*;
    import javax.servlet.http.*;
    import java.sql.*;

    public class LoginServlet extends HttpServlet{
      public void doPost(HttpServletRequest request,
      HttpServletResponse response)
      throws ServletException, IOException {
      response.setContentType("text/html");
      PrintWriter out = response.getWriter();
      String user=request.getParameter("uname");
      String pass=request.getParameter("upass");

        try {
            Class.forName("com.mysql.jdbc.Driver").newInstance();
            Connection 

myConn=DriverManager.getConnection("jdbc.mysql://localhost:3306/Login

","root","root");
            Statement myStmt=myConn.createStatement();
            String query="select * from user where 

username='"+user+"' and password='"+pass+"'";
            ResultSet myRs=myStmt.executeQuery(query);

            if(myRs.next());
            {
                out.println("Welcome "+user);
            }

            }
        catch(Exception e)
        {
            System.out.println("Exception"+e);
        }


      }
    }

In the above code, Login should be your database name and user should

be your table name.

For more information, visit the following link:

http://www.roseindia.net/jsp/loginbean.shtml



July 24, 2012 at 4:45 AM


same can't to run.. error also please help..

index.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <form name="f1" action="userdetail.java" method="post">
            <pre>
            Username:<input type="text" name="uname">
            Password:<input type="text" name="upass">
                     <input type="submit" value="Send">
            </pre>
        </form>
    </body>
</html>

**userdetail.java**
(server I'm using wamp server to connect. 
add library
- MySQL JDBC Driver-mysql-connector-java-5.1.13-bin.jar
- apache tomcat

In the services, in NetBeans IDE already at server
-jdbc:mysql://localhost:3306/userdetail[root on Default schema

import java.io.*;
import java.net.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;


@WebServlet(name = "userdetail", urlPatterns = {"/userdetail"})
public class userdetail extends HttpServlet {

public class LoginServlet extends HttpServlet{
      public void doPost(HttpServletRequest request,
      HttpServletResponse response)
      throws ServletException, IOException {
      response.setContentType("text/html");
      PrintWriter out = response.getWriter();
      String user=request.getParameter("uname");
      String pass=request.getParameter("upass");

        try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
            Connection myConn=DriverManager.getConnection("jdbc.mysql://localhost:3306/Login","root","root");
            Statement myStmt=myConn.createStatement();
            String query="select * from user where username='"+user+"' and password='"+pass+"'";
            ResultSet myRs=myStmt.executeQuery(query);

            if(myRs.next());
            {
                out.println("Welcome "+user);
            }

            }
        catch(Exception e)
        {
            System.out.println("Exception"+e);
        }


      }
    }


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