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Servlet 3.0 Annotations in Tomcat 7.0.8

Posted on 2011-02-18
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1,065 Views
Last Modified: 2013-12-02
I have been trying to get the new Servlet 3.0 annotations to work in Tomcat 7.0.8  Am I too early on this ? Does anybody have the trick ?  
I googled. No luck so far.  Here is my Servlet.
package rrz;
import java.io.IOException;
import java.util.Date;
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("/sample") 
public class SampleServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/plain");
        response.getWriter().write(new Date().toString());
    }
}

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and my web.xml is  
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
                      http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
  version="3.0"
  metadata-complete="true">  
  <display-name>Welcome to Tomcat</display-name>
  <description>
     Welcome to Tomcat
  </description>
</web-app>

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I tried the following lines
@WebServlet(value="/sample", loadOnStartup=1)
@WebServlet("/sample")
@WebServlet(urlPatterns = {"/sample"})
@WebServlet(name = "SampleServlet", urlPatterns = {"/sample"})
@WebServlet(urlMappings = {"/sample"}) // didn't compile
but none of them worked.
I tried to browse to
http://localhost:8080/sample 
(I am using the preinstalled  ROOT web app)
0
Comment
Question by:rrz
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7 Comments
 
LVL 92

Expert Comment

by:objects
ID: 34929738
> @WebServlet(name = "SampleServlet", urlPatterns = {"/sample"})


that one looks correct, what are you getting when you use that

do the logs show tomcat starting it up ok
0
 
LVL 27

Author Comment

by:rrz
ID: 34929877
Hi objects, I tried this line again
> @WebServlet(name = "SampleServlet", urlPatterns = {"/sample"})
no luck.  
In console I had
Feb 18, 2011 1:18:19 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory ROOT
in localhost_access_log
127.0.0.1 - - [18/Feb/2011:13:18:51 -0800] "GET /sample HTTP/1.1" 404 971
in browser I got
HTTP Status 404 - /sample
--------------------------------------------------------------------------------
type Status report
message /sample
description The requested resource (/sample) is not available.
--------------------------------------------------------------------------------
Apache Tomcat/7.0.8
0
 
LVL 27

Author Comment

by:rrz
ID: 34929892
No error messages anywhere.
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LVL 92

Accepted Solution

by:
objects earned 500 total points
ID: 34929973
>   metadata-complete="true">  

remove that or set it to false
0
 
LVL 27

Author Comment

by:rrz
ID: 34929994
Great. That works.
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
                      http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
  version="3.0"
  metadata-complete="false">  
  <display-name>Welcome to Tomcat</display-name>
  <description>
     Welcome to Tomcat
  </description>
</web-app>

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0
 
LVL 27

Author Closing Comment

by:rrz
ID: 34930000
thanks object
0
 
LVL 27

Author Comment

by:rrz
ID: 34930082
These all work now.
@WebServlet(value="/sample", loadOnStartup=1)
@WebServlet("/sample")
@WebServlet(urlPatterns = {"/sample"})
@WebServlet(name = "SampleServlet", urlPatterns = {"/sample"})
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