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Posted to users@activemq.apache.org by piotr_rezmer <pi...@ens.net.pl> on 2008/09/17 13:29:17 UTC

AjaxServlet is currently unavailable

Hello,

I want to add ajax connectivity to my existing application. I added
activemq-web-5.1.0.jar to \lib directory. First I wanted to check amq.js
file availability on the web server. So after entering URL like:

http://localhost:8080/myWebApp/amq/amq.js

I receive:
 HTTP Status 503 - Servlet AjaxServlet is currently unavailable

There are no corresponding error messages in server console. Either no INFO
messages about AjaxServlet. My web.xml has:

<web-app>
    <context-param>
        <param-name>org.apache.activemq.brokerURL</param-name>
        <param-value>tcp://cti:61616</param-value>
        <description>The URL of the Message Broker to connect
to</description>
    </context-param>
...
<servlet>
    <servlet-name>AjaxServlet</servlet-name>
    <servlet-class>org.apache.activemq.web.AjaxServlet</servlet-class>
    <load-on-startup>1</load-on-startup>    
  </servlet>
    <servlet>
        <servlet-name>MessageServlet</servlet-name>
       
<servlet-class>org.apache.activemq.web.MessageServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
   <servlet-mapping>
        <servlet-name>MessageServlet</servlet-name>
        <url-pattern>/message/*</url-pattern>
    </servlet-mapping>
...
 <servlet-mapping>
    <servlet-name>AjaxServlet</servlet-name>
    <url-pattern>/amq/*</url-pattern>
  </servlet-mapping>

Is it correct way to check .js file? Maybe I should use other path in URL?
I'm also worried with not seeing any INFO from AjaxServlet in server
console.



best regards
Piotr Rezmer
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Re: AjaxServlet is currently unavailable

Posted by piotr_rezmer <pi...@ens.net.pl>.


piotr_rezmer wrote:
> 
> Hello,
> 
> I want to add ajax connectivity to my existing application. I added
> activemq-web-5.1.0.jar to \lib directory. First I wanted to check amq.js
> file availability on the web server. So after entering URL like:
> 
> http://localhost:8080/myWebApp/amq/amq.js
> 

I found the reason. Jars were in /lib but in another web application on the
same server.

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Re: AjaxServlet is currently unavailable

Posted by Dejan Bosanac <de...@ttmsolutions.com>.
Hi,

It seems like your AjaxServlet did not initialize for some reason (you
should be seeing exception in a log file or console, but I don't know
how your logging system is configured).

It looks to me that you're missing some dependencies and have classpath
issues. For example, you need at least activemq-core jar to make it work
properly.

Cheers

-- 
Dejan Bosanac


http://www.ttmsolutions.com - get a free ActiveMQ user guide

ActiveMQ in Action - http://www.manning.com/snyder/
Scripting in Java - http://www.scriptinginjava.net



piotr_rezmer wrote:
> Hello,
>
> I want to add ajax connectivity to my existing application. I added
> activemq-web-5.1.0.jar to \lib directory. First I wanted to check amq.js
> file availability on the web server. So after entering URL like:
>
> http://localhost:8080/myWebApp/amq/amq.js
>
> I receive:
>  HTTP Status 503 - Servlet AjaxServlet is currently unavailable
>
> There are no corresponding error messages in server console. Either no INFO
> messages about AjaxServlet. My web.xml has:
>
> <web-app>
>     <context-param>
>         <param-name>org.apache.activemq.brokerURL</param-name>
>         <param-value>tcp://cti:61616</param-value>
>         <description>The URL of the Message Broker to connect
> to</description>
>     </context-param>
> ...
> <servlet>
>     <servlet-name>AjaxServlet</servlet-name>
>     <servlet-class>org.apache.activemq.web.AjaxServlet</servlet-class>
>     <load-on-startup>1</load-on-startup>    
>   </servlet>
>     <servlet>
>         <servlet-name>MessageServlet</servlet-name>
>        
> <servlet-class>org.apache.activemq.web.MessageServlet</servlet-class>
>         <load-on-startup>1</load-on-startup>
>     </servlet>
>    <servlet-mapping>
>         <servlet-name>MessageServlet</servlet-name>
>         <url-pattern>/message/*</url-pattern>
>     </servlet-mapping>
> ...
>  <servlet-mapping>
>     <servlet-name>AjaxServlet</servlet-name>
>     <url-pattern>/amq/*</url-pattern>
>   </servlet-mapping>
>
> Is it correct way to check .js file? Maybe I should use other path in URL?
> I'm also worried with not seeing any INFO from AjaxServlet in server
> console.
>
>
>
> best regards
> Piotr Rezmer
>