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404 Error- Please check the code for errors  RSS feed

 
Arunan Ramanathan
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I am refreshing my servlets/struts knowledge after a long time, I didnt found anything wrong with the following code. Anyone please cross verify and let me know the error. I am getting 404 when calling the URL,
http://localhost/simple.do

Class file,
package com.test.servlet;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class SimpleServlet
extends HttpServlet {

@Override
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
System.out.println("Servlet called");
RequestDispatcher dispatcher = req.getRequestDispatcher("test.jsp");
dispatcher.forward(req, res);
}
}

JSP file,

<%@ 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>Arunan</title>
</head>
<body>

</body>
</html>

Web.xml,
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>simple</display-name>

<servlet>
<servlet-name>simple</servlet-name>
<servlet-class>com.test.servlet.SimpleServlet</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>simple</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

</web-app>
 
William Brogden
Author and all-around good cowpoke
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The first thing I would check is the log files.

The servlet container responds 404 if there is no corresponding web app. Could be due to your servlet init() failing which would log an exception.

Bill
 
J. Kevin Robbins
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Your localhost is probably not running on port 80. Try using http://localhost:8080/simple.do

I'm not sure about the url-pattern in your servlet-mapping because I don't use Struts or global servlet mappings, but double-check that to see if there should be a leading slash.
 
J. Kevin Robbins
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Arunan Ramanathan wrote:
RequestDispatcher dispatcher = req.getRequestDispatcher("test.jsp");


This might also be a problem. Try using a full path. The 404 might be because it's not finding this file, not because it's failing to find the servlet.
 
Arunan Ramanathan
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Posts: 24
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Thanks all for your inputs

1. Port is not the problem
2. JSP is not the problem, since the println statement before the RequestDispatcher is not working

Confused!
 
Prajakta Acharya
Ranch Hand
Posts: 138
Java Spring
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Hello,

I don't see any context root of the application in URL.

What is the context root of your application deployed on the server?
What is the directory name in which application is deployed?
 
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