The requested resource is not available.

[Lee Chi Ho]

I have installed Eclipse and Tomcat as a server.

However the following error cannot be resolved.

HTTP Status 404 - /Testing1/servlet/chapter11.hello

--------------------------------------------------------------------------------

type Status report

message /Testing1/servlet/chapter11.hello

description The requested resource (/Testing1/servlet/chapter11.hello) is not available.


--------------------------------------------------------------------------------

I am wondering what the error is on my servlet.

Thanks for your kindly help~~~

[Seetharaman Venkatasamy]

Welcome to JavaRanch!
Please, SeachFirst

[lakshmana dhanimireddi]

may be your deployment descriptor web.xml is wrong or not available in your directory structure. (for servlets in tomcat)(i don't know about elipse).

[Bear Bibeault]

Without more details it's impossible to say. Most likely your URL does not match the mapping in the deployment descriptor, or perhaps you haven't mapped the servlet at all.

The use of the term "servlet" in the URL make me suspect the latter.

[Lee Chi Ho]

Thanks for all your replies, and I am very delighted due to your kindly help

Actually, I am a newer of Java servlet and created a simple servlet called hello.

The following is the code

package chapter11;

import java.io.*;

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

public class hello extends HttpServlet {
  public void doGet (HttpServletRequest req,
                     HttpServletResponse res)
    throws ServletException, IOException
  {
    PrintWriter out = res.getWriter();

    out.println("Hello, world!");
    out.close();
  }
}

I have do all procedures (installing server according to the instruction proposed both on internet and my lab notes) lots of times. However the error still occurs. Indeed, I don't know how to match the mapping and I think the eclipse can do it internally.

Therefore what should I do next step?

[Bear Bibeault]

We need to know how the servlet is mapped to a URL in the deployment descriptor (web.xml).

[Lee Chi Ho]

There is one at my server and I have not created web file.

And the followings are some parts in the file (Other servlets and mappings are uncommented)

<servlet>
<servlet-name>default</servlet-name>
<servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class>
- <init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
- <init-param>
<param-name>listings</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet>
<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
- <init-param>
<param-name>fork</param-name>
<param-value>false</param-value>
</init-param>
- <init-param>
<param-name>xpoweredBy</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
- <!-- The mappings for the JSP servlet
-->
- <servlet-mapping>
<servlet-name>jsp</servlet-name>
<url-pattern>*.jsp</url-pattern>
<url-pattern>*.jspx</url-pattern>
</servlet-mapping>

[Bear Bibeault]

If your web app has no web.xml, you cannot call any servlets.

I think at this point you need to find a good tutorial on how to set up a web application.