Wml With Servlets .. Does It Work?

Hi, i am doing my project in wap technology. I am struck up in initial stage. I am trying to get username and password from wml page and directing it to servlet. But my browser says

" Cannot load http://localhost:8080/LoginServlet(Http 404 Error)"

Here is my code:

Login.wml

<?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.3//EN" "(URL address ">

<wml>
<card id="card1" title=" Semester Grade Enquiry System Login Form">
<p>
<big></big>Semester Grade Enquiry System Login Form<br/>
Notice: Fields with * are required.<br/><br/>

<b>$(errorMsg)</b><br/>

* User name:<br/>
<input name="username"/><br/>
* Password (min. 5 characters):<br/>
<input type="password" name="password"/><br/>

<a href="validateloginform.wmls#validate()">Submit Form Data</a>
</p>
</card>
</wml>

validateloginform.wmls

<?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.3//EN" "url address">

<wml>
<card id="card1" title="Success">
<do type="accept" label="enter">
<go href="/LoginServlet.java"/>
</do>
</card>
</wml>

LoginServlet.java

import java.io.*;
import java.sql.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;


import javax.servlet.*;
import javax.servlet.http.*;

public class LoginServlet extends HttpServlet
{

public void doGet(HttpServletRequest req, HttpServletResponse res)throws ServletException, IOException

{
Connection con = null;
Statement stmt = null;
ResultSet rs = null;

res.setContentType("text/vnd.wap.wml");
PrintWriter out = res.getWriter();



String username2=req.getParameter("username");
String password2=req.getParameter("password");


out.println("<?xml version=\"1.0\"?>");
out.println("<!DOCTYPE wml PUBLIC " + "\"-//WAPFORUM//DTD WML 1.1//EN\" "
+ "\"(URL address )\">");

out.println("<wml>");
out.println("<card id=\"new\" title=\"login\">");
out.println(" <p> Login </p>");



try {


Class.forName("oracle.jdbc.driver.OracleDriver");


con = DriverManager.getConnection("jdbcracle:thin:@rccadv33:1521rcl", "scott", "tiger");


stmt = con.createStatement();



rs = stmt.executeQuery("select * from login");

while(rs.next())
{

if (username2.equals(rs.getString("username")) && password2.equals(rs.getString("password")))


{

out.println("<p>Login Successful<p>");
res.sendRedirect("success.wml");


}
else
{
out.println("<p>Please check the entries!<p>");
}
}
}
catch(ClassNotFoundException e)
{
out.println("Couldn't load database driver: " + e.getMessage());
out.println("hi");
}
catch(SQLException e)
{
out.println("SQLException caught is: " + e.getMessage());
out.println("<p>hi</p>");
out.println("</card>");
out.println("</wml>");

}
finally {

try {
if (con != null) con.close();
}
catch (SQLException ignored) { }
}


}
}


Can anyone help me in solving this issue.
Thanks in advance.

I would guess it indicates a problem with the servlet mapping specified.



I seriously doubt that you should be using the .java there, unless you have actually specified the mapping URL in that manner (in your web.xml).



Post your web.xml which indicates the servlet mapping.

Also, use the code tag to preserve code formatting.

I have removed that .java extension . Is there any wml editors and editors to write my java code?

Did it solve your problem?

If you are looking for editors (or IDE in specific), I personally prefer Eclipse. It has a WML editor in Web Tools plugin.

Yes , after removing it, it is working. Thank you so much annie. one more issue, its working in nokia simulator but not in openwave. If i download eclipse, should i configure any settings for that??

I'm not very conversant with WML myself. You might want to search for some documentation.
http://developer.openwave.com/dvl/support/documentation/technical_notes/sampleservlet.htm

Have you done any projects on wap/wml?

No, I only studied it out of interest some time ago.

Hi I downloaded eclipse IDE . I am using Apache Tomcat Server. How to connect this server with my IDE?

http://www.eclipse.org/webtools/jst/components/ws/1.0/tutorials/InstallTomcat/InstallTomcat.html

Thank you so much annie.. I configured it.

For the above mentioned code, sometimes i get java.lang.NullPointerException at LoginServlet.doGet????
Why this error occurs??

A NullPointerException can occur because some object is null and a method is being invoked. Your exception stack trace should indicate the line number at which the exception is generated.