#WebServlet on Tomcat 7 getting 404 Error - servlets

Question

Tomcat 7 running on Windows 7, using servlet annotation, is giving me a 404 error when I try this URL:
http://localhost:8080/LoginExample/
Tomcat is using JRE 1.7, and the servlet class is contained within folder .../webapps/LoginExample. It was compiled using Java 1.7. I have no Web.xml. It deploys without error.
Here is the class:
package com.journaldev.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebInitParam;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class LoginServlet
*/
#WebServlet(
description = "Login Servlet",
urlPatterns = { "/LoginServlet" },
initParams = {
#WebInitParam(name = "user", value = "Pankaj"),
#WebInitParam(name = "password", value = "journaldev")
})
public class LoginServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public void init() throws ServletException {
//we can create DB connection resource here and set it to Servlet context
if(getServletContext().getInitParameter("dbURL").equals("jdbc:mysql://localhost/mysql_db") &&
getServletContext().getInitParameter("dbUser").equals("mysql_user") &&
getServletContext().getInitParameter("dbUserPwd").equals("mysql_pwd"))
getServletContext().setAttribute("DB_Success", "True");
else throw new ServletException("DB Connection error");
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//get request parameters for userID and password
String user = request.getParameter("user");
String pwd = request.getParameter("pwd");
//get servlet config init params
String userID = getServletConfig().getInitParameter("user");
String password = getServletConfig().getInitParameter("password");
//logging example
log("User="+user+"::password="+pwd);
if(userID.equals(user) && password.equals(pwd)){
response.sendRedirect("LoginSuccess.jsp");
}else{
RequestDispatcher rd = getServletContext().getRequestDispatcher("/login.html");
PrintWriter out= response.getWriter();
out.println("<font color=red>Either user name or password is wrong.</font>");
rd.include(request, response);
}
}
}

Answer 1

Your servlet class LoginServlet is designed to handle only '/LoginServlet' url and in http://localhost:8080/LoginExample/ you are using '/' as url.
You must use http://localhost:8080/LoginExample/LoginServlet
OR
<form action="LoginServlet" method="post">
....
....
</form>