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I'm learning Java Servlets and JSP.
I have the following code:
HelloServlet.jsp
public class HelloServlet extends HttpServlet {
private static final long serialVersionUID=1;
protected void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
response.setCharacterEncoding("utf-8);
RequestDispatcher aDispatcher = request.getRequestDispatcher("file.jsp");
aDispatcher.forward(request,response);
}
}
file.jsp
<!DOCTYPE html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>First JSP</title>
</head>
<body>
Hello!!
</body>
</html>
My web.xml looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://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"
xmlns:schemaLocation="http://java.sun.som/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>Hello</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<description></description>
<display-name>Hello Servlet</display-name>
<servlet-name>hello</servlet-name>
<servlet-class>be.howest.HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>hello</servlet-name>
<url-pattern>/urlpattern</url-pattern>
</servlet-mapping>
</web-app>
When I'm running the file on Tomcat, I get the following error: HTTP Status 404 - /Projectname/file.jsp
type - Status report
message - Projectname/file.jsp
description - The requested resource is not available.
What did I do wrong? because I can't find the solution by myself
976
Try with prefix slash as shown below
RequestDispatcher aDispatcher = request.getRequestDispatcher("/file.jsp");
if jsp file is present directly under webapp folder.
or try
RequestDispatcher aDispatcher = request.getRequestDispatcher("/WEB-INF/file.jsp");
if jsp file is under WEB-INF folder.
project structure:
WebContent
|
|__file.jsp
|
|__WEB-INF
|
|__file.jsp
|__web.xml
Read What is WEB-INF used for in a Java web application?
If you want not to access this JSP file directly then put is inside the WEB-INF folder that can't accessed publically that is more secure way for restricted resources.
A JSP file placed under WEB-INF can't accessed directly by simply hitting the URL in that case it can be accessed by the application only.
132
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