This question already has answers here:
Servlet returns "HTTP Status 404 The requested resource (/servlet) is not available"
(19 answers)
Closed 6 years ago.
I've got a page here. When I click the submit button, I get the 404 page saying:
HTTP Status 404 - /Email/EmailGet
type Status report
message /Email/EmailGet
description The requested resource is not available.
Apache Tomcat/7.0.47
Code:
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="EmailGet" method="GET">
Email: <input type="text" name="email"> <br> Password: <input
type="password" name="password"> <br> <input
type="submit" value="Submit">
</form>
</body>
</html>
Here's the EmailGet code:
package email;
import java.io.IOException;
import javax.mail.Session;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
/**
* Servlet implementation class Controller
*/
#WebServlet("/EmailGet")
public class EmailGet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* #see HttpServlet#HttpServlet()
*/
public EmailGet() {
super();
}
/**
* #see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// Gets the entered email and password
String username = request.getParameter("email");
String password = request.getParameter("password");
//Creates the session and sets the session attributes
HttpSession session = request.getSession();
session.setAttribute("username", username);
session.setAttribute("password", password);
RequestDispatcher dispatcher;
//Calls the setCredentials method to check if entered credentials are valid
boolean result = SendSMTPMail.setCredentials(username, password);
//if valid, forwards to send page
if (result == true) {
dispatcher = request.getRequestDispatcher("send.jsp");
dispatcher.forward(request, response);
}
//if not valid, forwards to index page with error message displayed
else {
dispatcher = request.getRequestDispatcher("indexerror.jsp");
dispatcher.forward(request, response);
}
}
/**
* #see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
}
Any ideas? It used to forward the page fine, but seems not to be working now.
Each jsp page runs fine individually, it's just the forwarding that isn't working.
It seems. . . that the requested page does not exist. I don't know the names of you files, so i can only guess that you have a typo somewhere, try to check your url bar and check if this is really the url you wanted.
Related
I am trying to make a login form. and want the username parameter to accessed by the changepass.java file.
The flow of the application is:
login.jsp -> LoginServlet -> AfterLogin.jsp -> ChangePass.jsp -> ChangePassword Servlet
I tried using the session and request dispatcher for this it is not working.
I am able to get the parameter from login.jsp to ChangePass.jsp but after that the changePassword servlet is not able to access it.
My code for the flow is:
login.jsp
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<body>
<div align="center">
<form name="login" onsubmit="return onSubmit()" action="LoginServlet">
<h2 style="color:blue">Account Login</h2>
<table style="background-color:powderblue;border: 2px solid green;border-color:green;">
<tr><td>Enter User Name:</td><td><input type="text" name="username" minlength="6" required></td></tr>
<tr><td>Enter Pass Word:</td><td><input type="password" name="password" id="password" required></td></tr>
<tr><td colspan="2" align="center"><input type="submit" value="login"></td></tr>
</table>
<br>
<u>Home</u>
</form>
</div>
<%
String msg=(String) request.getAttribute("msg");
if(msg!=null){
%>
<p style="color:red"><%=msg%></p>
<%
}
%>
<script type="text/javascript">
function onSubmit(){
var y=document.login.password.value;
var passR=/^(?=.*\d)(?=.*[A-Z]).{6,20}$/;
if(!y.match(passR)){
alert("Password must contain at least one number and one UpperCase letter");
document.getElementById("password").focus();
}
}
</script>
</body>
</html>
LoginServlet.java
package com.wipro.controller;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.wipro.util.DButil;
/**
* Servlet implementation class LoginServlet
*/
#WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* #see HttpServlet#HttpServlet()
*/
public LoginServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* #see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
try{
Connection con=DButil.getConnection();
PrintWriter out=response.getWriter();
String username=request.getParameter("username");
String password=request.getParameter("password");
String sql="select * from user_table where username=? and password=?";
PreparedStatement st=con.prepareStatement(sql);
st.setString(1, username);
st.setString(2, password);
ResultSet rs=st.executeQuery();
if(rs.next()) {
HttpSession se=request.getSession();
se.setAttribute("username", username );
request.getRequestDispatcher("AfterLogin.jsp").include(request, response);
}
else {
request.setAttribute("msg", "Invalid Credentials");
request.getRequestDispatcher("login.jsp").include(request, response);
}
}
catch(Exception e) {
e.printStackTrace();
}
}
/**
* #see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
AfterLogin.jsp
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<h1><font color=green> Welcome <%=session.getAttribute("username")%></font></h1>
Change Password
</body>
</html>
ChangePass.jsp
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<div align="center">
<form name="changePS" onsubmit="return onSubmit()" action="ChangePassword">
<%
String username=(String)session.getAttribute("username");
request.setAttribute("username", username);
%>
<h1><font color=green> Welcome <%=username%></font></h1>
<h2 style="color:blue">Change Password</h2>
<table style="background-color:powderblue;border: 2px solid green;border-color:green;">
<tr><td>Old Password:</td><td><input type="password" name="oldpwd" id="oldpwd" required></td></tr>
<tr><td>New Password:</td><td><input type="password" name="newpwd" id="newpwd" required></td></tr>
<tr><td>Confirm Password:</td><td><input type="password" name="confpwd" id="confpwd" required></td></tr>
<tr><td colspan="2" align="center"><input type="submit" value="login"></td></tr>
</table>
<br>
<u>Home</u>
</form>
</div>
<script type="text/javascript">
function onSubmit(){
y=document.changePS.oldpwd.value;
z=document.changePS.newpwd.value;
a=document.changePS.confpwd.value;
passR=/^(?=.*\d)(?=.*[A-Z]).{6,20}$/;
if(z != a){
alert("New Password and Confirm Password do not match");
document.getElementById("confpwd").focus();
return false;
}
if(!y.match(passR)){
alert("Old Password must contain at least one number,one UpperCase letters");
document.getElementById("oldpwd").focus();
return false;
}
if(!z.match(passR)){
alert("New Password must contain at least one number,one UpperCase letters");
document.getElementById("newpwd").focus();
return false;
}
return true;
}
</body>
</html>
ChangePassword.java
package com.wipro.controller;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.wipro.util.DButil;
/**
* Servlet implementation class ChangePassword
*/
#WebServlet("/ChangePassword")
public class ChangePassword extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* #see HttpServlet#HttpServlet()
*/
public ChangePassword() {
super();
// TODO Auto-generated constructor stub
}
/**
* #see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
try{
Connection con=DButil.getConnection();
PrintWriter out=response.getWriter();
String username = (String)request.getAttribute("username");
String password=request.getParameter("newPwd");
String sql="update user_table set password=? where username=?";
PreparedStatement st=con.prepareStatement(sql);
st.setString(1, username);
st.setString(2, password);
int rs=st.executeUpdate();
if(rs!=0) {
out.println("<h1><font color=green> Updated the password </font></h1>");
}
else {
out.println("<h1><font color=red> Sorry no username with this name </font></h1>"+username);
}
}
catch(Exception e) {
e.printStackTrace();
}
}
/**
* #see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
I am working on a student management project in which I created two servlets in same folder, LoginController for handling the login and TestContoller for registering new student. The problem is that when I try to login LoginController is accessible and I am able to login but when i try to register a student through a register.jsp page mapped to TestController , I get HTTP Status 404 – Not Found. The requested resource [/StudentManagement/TestController] is not available error
Here is my code:-
register.jsp
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="${pageContext.request.contextPath}/TestController" method="post">
<input type="text" name="name">
<input type="submit" value="submit">
</form>
</body>
</html>
TestController
package com.controller;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class TestController
*/
#WebServlet("/TestController")
public class TestController extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* #see HttpServlet#HttpServlet()
*/
public TestController() {
super();
// TODO Auto-generated constructor stub
}
/**
* #see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
/**
* #see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
System.out.println(request.getParameter("name"));
}
}
This question already has answers here:
Servlet returns "HTTP Status 404 The requested resource (/servlet) is not available"
(19 answers)
Closed 2 years ago.
I'm trying to write a simple servlet and it's not working and I can't figure out why. The code is very simple but somehow it's not working, and it's driving me nuts.
Here's the index.jsp file:
<%# page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>JavaEE</title>
</head>
<body>
<h1>Hello JavaEE World</h1>
<form action="helloServlet" method="post">
Enter a number: <input type="text" name="number" size="5" />
<input type="submit" value="Call Servlet" />
</form>
</body>
</html>
And here's the servlet file:
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
#WebServlet("helloServlet")
public class HelloServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public HelloServlet() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
PrintWriter write = response.getWriter();
write.println("OMG");
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String number = request.getParameter("number");
PrintWriter write = response.getWriter();
write.println("Number: " + number);
write.flush();
}
}
But somehow it's not working. I provided the pictures below if anyone care.
Servlet File
index.jsp File
index.jsp on Browser
Error image when submitting form
Pom.xml if anyone care
Try changing the annotation to this:
#WebServlet(name = "helloServlet", urlPatterns = { "/helloServlet" })
This is my html code
<%#page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>New Page</title>
</head>
<body>
<h1>Hello World!</h1>
<form method="post" action="display">
I have used POST method above for servlet action
Enter Name: <input type="text" name="name">
Enter City <input type="text" name="city">
<input type="submit" name="submit">
</form>
</body>
</html>
Servlet1.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class servlet1 extends HttpServlet {
#Override
public void doPost(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException
used "doPost" for the POST method defined in the html form
{
response.setContentType("text/html");
Cookie c1 = new Cookie("name",request.getParameter("name"));
Cookie c2 = new Cookie("city",request.getParameter("city"));
response.addCookie(c1);
response.addCookie(c2);
redirecting to 2nd servlet through this form
response.sendRedirect("servlet2");
}
}
servlet2.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class servlet2 extends HttpServlet {
#Override
public void doPost(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException
I am getting an error saying "HTTP GET Method is not supported by this url", however I have nowhere mentioned GET in my code.
{
response.setContentType("text/html");
Cookie c[] = request.getCookies();
PrintWriter pw = response.getWriter();
for(Cookie cookie : c)
{
if(cookie.getName().equals("name") ||
cookie.getName().equals("city"))
{
pw.println(cookie.getValue()+"<br>");
}
}
pw.println("Print using cookie");
}
}
the servlet works perfectly fine if I use "doGET" method in servlet2.java. However I am using POST method then why does it require "doGET"??
I get the below error for the above code.
HTTP Status 405 - HTTP method GET is not supported by this URL
type: Status report
message: HTTP method GET is not supported by this URL
description: The specified HTTP method is not allowed for the requested
resource.
Apache Tomcat/7.0.56
This question already has answers here:
Servlet returns "HTTP Status 404 The requested resource (/servlet) is not available"
(19 answers)
Closed 5 years ago.
I am trying to connect html to a servlet to get the user input but I get an error that says The requested resource is not available. I even put the servlet on the same folder as the html file, but the error keeps coming. I have the servlet both in Java resources and in html folder (web content). It should be visible. Below is my code for html file and servlet.
html file:
<!DOCTYPE html>
<html>
<!--This is the login page.-->
<head>
<meta charset="ISO-8859-1">
<title>Login Page</title>
<style>
body {
background-color: lightblue;
backroung-repeat: repeat-1 ;
}
h1 {
color: maroon;
margin-left: 40px;
}
</style>
</head>
<body background="https://cdn4.iconfinder.com/data/icons/gray-user-management/512/login-512.png" >
<h1>Autentification</h1>
<form action="ConnectionMaker" method="post">
User name:<Input type="text" name="user"><br/><br/>
Password:<Input type="password" name="pass"><br/><br/>
<input type="submit" value="Submit">
login
</form>
</body>
</html>
and servlet:
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class ConnectionMaker
*/
#WebServlet("/DBConnection")
public class ConnectionMaker extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* #see HttpServlet#HttpServlet()
*/
public ConnectionMaker() {
super();
// TODO Auto-generated constructor stub
}
/**
* #see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
response.getWriter().append("Served at: ").append(request.getContextPath());
}
/**
* #see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
String user = request.getParameter("user");
String pass= request.getParameter("pass");
System.out.println(user+" "+pass);
}
}
Change <form action="ConnectionMaker" method="post"> to <form action="DBConnection" method="post"> or maybe /DBConnection (with slash). You hit the URL, not the class name.
Also, why call doGet inside doPost?